Add governed buildings register snapshot

CHANGELOG.md

@@ -7,6 +7,23 @@
 
 # Changelog
 
+## Sprint 206 Governed Buildings and Addresses Register snapshot (2026-07-15)
+
+- Added an explicit operator for the current official Digitaal Vlaanderen
+  building, building-unit and address OGC collections with complete pagination,
+  safety limits, retries and retained raw SHA256 evidence.
+- Added exact EPSG:31370 Area clipping, EPSG:4326 building persistence and
+  classified reconciliation against checksummed persisted GRB partitions.
+- Persisted only building lifecycle data and aggregate unit/address counts;
+  full addresses, street names and house/box numbers remain outside queryable
+  output, and ambiguous address/GRB relations are never forced.
+- Added exact footprint, lifecycle, unit, address-status and confirmed-GRB
+  selection metrics, including correct filtered `feature_count` execution.
+- Made the Map workspace prefer the richer Mol register snapshot only for the
+  matching Mol Area and retain regional GRB coverage everywhere else.
+- Added source-inventory presentation, runtime packaging and focused operator,
+  privacy, reconciliation, metric and UI tests.
+
 ## Sprint 205 Governed agricultural-use parcel history (2026-07-15)
 
 - Added an explicit ALZ operator for the definitive 2008-2025 annual

backend/README.md

@@ -1132,6 +1132,28 @@ transport region. Every annual source ZIP and crop code list remains under the
 storage volume. PostGIS computes exact hectares for drawn rectangles and
 persisted Areas; parcel identities are deliberately unavailable for lineage.
 
+## Buildings and Addresses Register snapshot
+
+After the Mol Area and regional GRB buildings have been provisioned, prepare
+the official register evidence with:
+
+```bash
+docker exec geointel python /app/scripts/provision_buildings_addresses_register.py --fetch-only
+```
+
+Review the generated manifest and then persist through DatasetService:
+
+```bash
+docker exec geointel python /app/scripts/provision_buildings_addresses_register.py
+```
+
+The resulting `building_registry` Dataset uses ordinary EPSG:4326
+`vector_features`; no register-specific table or direct operator database write
+exists. Exact PostGIS selection exposes footprint hectares, lifecycle counts,
+aggregate unit/address counts and GRB reconciliation counts. Raw address pages
+are checksummed storage evidence only. Address labels and house/box numbers are
+not copied into queryable properties.
+
 ## Helpful repository scripts
 
 - `bash scripts/backend_install.sh`

backend/app/services/vector_feature_service.py

@@ -26,6 +26,7 @@ FULL_AREA_CLIPPED_OPERATOR_TOOLS = {
     "provision_waterinfo_station_history.py",
     "provision_mol_bwk_natura2000.py",
     "provision_agricultural_parcel_history.py",
+    "provision_buildings_addresses_register.py",
 }
 
 
@@ -144,6 +145,7 @@ class VectorFeatureService:
             "agricultural": "agriculture",
             "landbouw": "agriculture",
             "landbouwgebruik": "agriculture",
+            "building_registry": "buildings",
         }
         for candidate in candidates:
             if not isinstance(candidate, str) or not candidate.strip():
@@ -538,6 +540,10 @@ class VectorFeatureService:
                 is_estimate = bool(config.get("is_estimate", False))
                 if not is_estimate and config.get("warning_only_when_estimate", True):
                     warning = None
+        elif method == "feature_count" and (filter_property or dimension in {1, 2}):
+            metric_value = float(
+                db.query(func.count(VectorFeature.id)).filter(*metric_filter).scalar() or 0
+            )
         elif method != "feature_count":
             raise AppError(
                 code="INVALID_SELECTION_AGGREGATION",

backend/tests/test_sprint206_buildings_addresses_register.py

@@ -0,0 +1,356 @@
+from __future__ import annotations
+
+import importlib.util
+import json
+import sys
+from pathlib import Path
+from uuid import uuid4
+
+from shapely.geometry import Point, box, mapping
+from shapely.ops import transform as transform_geometry
+
+from app.models import Dataset
+from app.schemas.operations import VectorSelectionSummary
+from app.services.vector_feature_service import VectorFeatureService
+
+
+ROOT = Path(__file__).resolve().parents[2]
+BBOX = {"min_x": 5.0, "min_y": 51.1, "max_x": 5.3, "max_y": 51.4, "crs": "EPSG:4326"}
+
+
+def load_operator():
+    script_path = ROOT / "scripts" / "provision_buildings_addresses_register.py"
+    spec = importlib.util.spec_from_file_location("buildings_addresses_register_operator", script_path)
+    assert spec is not None
+    assert spec.loader is not None
+    module = importlib.util.module_from_spec(spec)
+    sys.modules[spec.name] = module
+    spec.loader.exec_module(module)
+    return module
+
+
+def building_feature(object_id: str, geometry, status: str = "Gerealiseerd") -> dict:  # noqa: ANN001
+    return {
+        "type": "Feature",
+        "id": f"Gebouw.{object_id}",
+        "geometry": mapping(geometry),
+        "properties": {
+            "ObjectId": int(object_id),
+            "VersieId": "2026-07-15T08:00:00+02:00",
+            "GeometrieMethode": "IngemetenGRB",
+            "GebouwStatus": status,
+        },
+    }
+
+
+def unit_feature(object_id: str, building_id: str, point: Point) -> dict:
+    return {
+        "type": "Feature",
+        "id": f"Gebouweenheid.{object_id}",
+        "geometry": mapping(point),
+        "properties": {
+            "ObjectId": int(object_id),
+            "GebouwObjectId": int(building_id),
+            "GebouweenheidStatus": "Gerealiseerd",
+            "Functie": "NietGekend",
+        },
+    }
+
+
+def address_feature(object_id: str, point: Point) -> dict:
+    return {
+        "type": "Feature",
+        "id": f"Adres.{object_id}",
+        "geometry": mapping(point),
+        "properties": {
+            "ObjectId": int(object_id),
+            "AdresStatus": "InGebruik",
+            "PositieSpecificatie": "Gebouweenheid",
+            "VolledigAdres": "Teststraat 1 bus 2, 2400 Mol",
+            "Straatnaam": "Teststraat",
+            "Huisnummer": "1",
+            "Busnummer": "2",
+        },
+    }
+
+
+class ScalarQuery:
+    def __init__(self, value: float):
+        self.value = value
+
+    def filter(self, *args):  # noqa: ANN002, ARG002
+        return self
+
+    def scalar(self):
+        return self.value
+
+
+class SequenceScalarSession:
+    def __init__(self, values: list[float]):
+        self.values = iter(values)
+
+    def query(self, *args):  # noqa: ANN002, ARG002
+        return ScalarQuery(next(self.values))
+
+
+class OfficialResponse:
+    status_code = 200
+
+    def __init__(self, payload: dict, url: str):
+        self.payload = payload
+        self.url = url
+        self.content = json.dumps(payload).encode("utf-8")
+
+    def json(self):
+        return self.payload
+
+    def raise_for_status(self):
+        return None
+
+
+class TwoPageOfficialSession:
+    def __init__(self):
+        self.calls = 0
+
+    def get(self, url, *, params, timeout):  # noqa: ANN001, ARG002
+        self.calls += 1
+        if self.calls == 1:
+            payload = {
+                "type": "FeatureCollection",
+                "features": [building_feature("1", box(5.10, 51.20, 5.101, 51.201))],
+                "links": [{"rel": "next", "href": f"{url}?startIndex=1"}],
+            }
+        else:
+            payload = {
+                "type": "FeatureCollection",
+                "features": [building_feature("2", box(5.102, 51.20, 5.103, 51.201))],
+                "links": [],
+            }
+        return OfficialResponse(payload, f"{url}?page={self.calls}")
+
+
+def normalized_fixture(module):  # noqa: ANN001
+    boundary_wgs84 = box(5.09, 51.19, 5.12, 51.22)
+    boundary_lambert72 = transform_geometry(module.TO_LAMBERT72.transform, boundary_wgs84)
+    polygon = box(5.10, 51.20, 5.105, 51.205)
+    buildings, summary = module.normalize_buildings(
+        [building_feature("100", polygon)],
+        boundary_lambert72,
+    )
+    return boundary_wgs84, boundary_lambert72, polygon, buildings, summary
+
+
+def test_official_collection_pagination_retains_checksummed_pages(tmp_path: Path) -> None:
+    module = load_operator()
+    session = TwoPageOfficialSession()
+    raw_dir = tmp_path / "raw"
+
+    features, summary = module.fetch_collection(
+        session,
+        url=module.BUILDING_ITEMS_URL,
+        name="buildings",
+        bbox=(5.0, 51.0, 5.2, 51.2),
+        raw_dir=raw_dir,
+        page_limit=1,
+        max_features=10,
+        timeout=30,
+    )
+
+    assert [feature["properties"]["ObjectId"] for feature in features] == [1, 2]
+    assert summary["page_count"] == 2
+    assert all((tmp_path / page["path"]).is_file() for page in summary["pages"])
+    assert all(len(page["sha256"]) == 64 for page in summary["pages"])
+
+
+def test_buildings_are_clipped_in_lambert72_and_keep_lifecycle_status() -> None:
+    module = load_operator()
+    boundary = box(5.10, 51.20, 5.11, 51.21)
+    boundary_lambert72 = transform_geometry(module.TO_LAMBERT72.transform, boundary)
+    source = box(5.095, 51.195, 5.105, 51.205)
+
+    buildings, summary = module.normalize_buildings(
+        [building_feature("100", source, "InAanbouw")],
+        boundary_lambert72,
+    )
+
+    assert summary == {"rejected_or_outside_count": 0, "clipped_count": 1}
+    record = buildings["100"]
+    assert record["status_key"] == "under_construction"
+    assert record["was_clipped"] is True
+    assert record["geometry_wgs84"].difference(boundary.buffer(1e-7)).area < 1e-12
+    assert record["area_ha"] > 0
+
+
+def test_official_unit_relation_and_exact_address_position_are_aggregated_without_labels() -> None:
+    module = load_operator()
+    _, boundary_lambert72, polygon, buildings, _ = normalized_fixture(module)
+    point = polygon.centroid
+    units, unit_summary = module.normalize_units(
+        [unit_feature("200", "100", point)],
+        boundary_lambert72,
+        buildings,
+    )
+    address_counts, address_summary = module.link_addresses(
+        [address_feature("300", point)],
+        boundary_lambert72,
+        buildings,
+        units,
+    )
+    module.reconcile_with_grb(
+        buildings,
+        [{"source_feature_id": "GRB.1", "geometry_wgs84": polygon}],
+    )
+    output, totals = module.build_output_features(
+        buildings,
+        units,
+        address_counts,
+        observed_date=module.date(2026, 7, 15),
+        area_name="Gemeente Mol - officiële grens",
+    )
+
+    assert unit_summary["orphan_building_count"] == 0
+    assert address_summary["match_method_counts"] == {"unit_position_exact": 1}
+    assert totals["linked_unit_count"] == 1
+    assert totals["linked_address_count"] == 1
+    properties = output[0]["properties"]
+    assert properties["unit_count"] == 1
+    assert properties["active_address_count"] == 1
+    assert properties["grb_match_status"] == "matched"
+    for prohibited in ("VolledigAdres", "Straatnaam", "Huisnummer", "Busnummer", "HuisnummerLabel"):
+        assert prohibited not in properties
+
+
+def test_ambiguous_unit_position_is_reported_and_never_forced() -> None:
+    module = load_operator()
+    boundary = box(5.09, 51.19, 5.12, 51.22)
+    boundary_lambert72 = transform_geometry(module.TO_LAMBERT72.transform, boundary)
+    point = Point(5.105, 51.205)
+    buildings, _ = module.normalize_buildings(
+        [
+            building_feature("100", box(5.10, 51.20, 5.106, 51.21)),
+            building_feature("101", box(5.104, 51.20, 5.11, 51.21)),
+        ],
+        boundary_lambert72,
+    )
+    units, _ = module.normalize_units(
+        [unit_feature("200", "100", point), unit_feature("201", "101", point)],
+        boundary_lambert72,
+        buildings,
+    )
+
+    counts, summary = module.link_addresses(
+        [address_feature("300", point)],
+        boundary_lambert72,
+        buildings,
+        units,
+    )
+
+    assert summary["ambiguous_address_count"] == 1
+    assert summary["matched_address_count"] == 0
+    assert not counts
+
+
+def test_grb_reconciliation_distinguishes_exact_and_unmatched_geometry() -> None:
+    module = load_operator()
+    _, _, polygon, buildings, _ = normalized_fixture(module)
+    buildings["101"] = {
+        **buildings["100"],
+        "object_id": "101",
+        "geometry_wgs84": box(5.11, 51.21, 5.115, 51.215),
+        "geometry_lambert72": transform_geometry(
+            module.TO_LAMBERT72.transform,
+            box(5.11, 51.21, 5.115, 51.215),
+        ),
+    }
+
+    summary = module.reconcile_with_grb(
+        buildings,
+        [{"source_feature_id": "GRB.1", "geometry_wgs84": polygon}],
+    )
+
+    assert buildings["100"]["grb_match_method"] == "exact_geometry"
+    assert buildings["100"]["grb_match_confidence"] == 1.0
+    assert buildings["101"]["grb_match_status"] == "unmatched"
+    assert summary["match_status_counts"] == {"matched": 1, "unmatched": 1}
+    assert summary["match_rate"] == 0.5
+
+
+def test_status_and_relation_metrics_use_filtered_server_owned_aggregations() -> None:
+    module = load_operator()
+    metrics = module.selection_metrics()
+    assert {item["metric_key"] for item in metrics} >= {
+        "registered_building_count",
+        "realized_building_count",
+        "building_unit_count",
+        "linked_address_count",
+        "active_address_count",
+        "grb_matched_building_count",
+    }
+    status_metrics = [item for item in metrics if item["metric_key"].endswith("building_count")]
+    assert any(item.get("filter_property") == "building_status_key" for item in status_metrics)
+    assert "huishoudens" in next(item for item in metrics if item["metric_key"] == "linked_address_count")["warning"]
+
+
+def test_filtered_feature_count_and_numeric_relations_validate_as_selection_summary() -> None:
+    module = load_operator()
+    dataset = Dataset(
+        id=uuid4(),
+        project_id=uuid4(),
+        name="buildings_addresses_register.geojson",
+        dataset_type="vector",
+        dataset_role="reference",
+        source_name=module.SOURCE_NAME,
+        reference_layer_name="building_registry",
+        source_metadata={
+            "theme": "buildings",
+            "semantic_metrics": False,
+            "selection_aggregation": {
+                "metric_key": "building_footprint_area",
+                "method": "intersection_area",
+                "label": "Gebouwgrondoppervlakte",
+                "unit": "ha",
+                "geometry_dimension": 2,
+            },
+            "selection_metrics": module.selection_metrics(),
+        },
+    )
+    session = SequenceScalarSession([100_000, 2, 0, 1, 0, 4, 3, 4, 3, 2])
+
+    result = VectorFeatureService.summarize_features_by_bbox(
+        session,
+        dataset=dataset,
+        bbox=BBOX,
+        total_feature_count=3,
+        full_dataset_area=True,
+    )
+
+    metrics = {item["metric_key"]: item for item in result["metrics"]}
+    assert result["metric_value"] == 10.0
+    assert metrics["registered_building_count"]["metric_value"] == 3
+    assert metrics["realized_building_count"]["metric_value"] == 2
+    assert metrics["building_unit_count"]["metric_value"] == 4
+    assert metrics["active_address_count"]["metric_value"] == 3
+    assert metrics["grb_matched_building_count"]["metric_value"] == 2
+    VectorSelectionSummary(**result)
+
+
+def test_operator_is_canonical_packaged_and_mol_scoped_in_explorer() -> None:
+    operator = (ROOT / "scripts/provision_buildings_addresses_register.py").read_text(encoding="utf-8")
+    service = (ROOT / "backend/app/services/vector_feature_service.py").read_text(encoding="utf-8")
+    dockerfile = (ROOT / "deploy/unraid/Dockerfile.all-in-one").read_text(encoding="utf-8")
+    readiness = (ROOT / "scripts/run_readiness_check.sh").read_text(encoding="utf-8")
+    workspace = (ROOT / "frontend/src/components/map/MapWorkspace.tsx").read_text(encoding="utf-8")
+    catalog = (ROOT / "frontend/src/components/datasets/SourceCatalogPanel.tsx").read_text(encoding="utf-8")
+    display = (ROOT / "frontend/src/lib/datasetDisplay.ts").read_text(encoding="utf-8")
+
+    assert "/datasets/upload" in operator
+    assert "VectorFeature" not in operator
+    assert "INSERT INTO vector_features" not in operator
+    assert "VolledigAdres" in operator and '"VolledigAdres", "Straatnaam"' in operator
+    assert '"provision_buildings_addresses_register.py"' in service
+    assert "COPY scripts/provision_buildings_addresses_register.py" in dockerfile
+    assert "py_compile scripts/provision_buildings_addresses_register.py" in readiness
+    assert "datasetCoversSelectedArea" in workspace
+    assert "Gebouwen- en Adressenregister" in catalog
+    assert "building_registry: 'Gebouwenregister'" in display
+    assert "digitaal_vlaanderen_buildings_addresses_register: 'Digitaal Vlaanderen'" in display

deploy/unraid/Dockerfile.all-in-one

@@ -80,6 +80,7 @@ COPY scripts/provision_official_landuse_timeseries.py /app/scripts/provision_off
 COPY scripts/provision_waterinfo_station_history.py /app/scripts/provision_waterinfo_station_history.py
 COPY scripts/provision_mol_bwk_natura2000.py /app/scripts/provision_mol_bwk_natura2000.py
 COPY scripts/provision_agricultural_parcel_history.py /app/scripts/provision_agricultural_parcel_history.py
+COPY scripts/provision_buildings_addresses_register.py /app/scripts/provision_buildings_addresses_register.py
 COPY scripts/provision_regional_timeseries.py /app/scripts/provision_regional_timeseries.py
 COPY scripts/geographic_scopes.py /app/scripts/geographic_scopes.py
 COPY scripts/provision_geographic_scope.py /app/scripts/provision_geographic_scope.py

docs/API_CONTRACTS.md

@@ -1639,6 +1639,21 @@ Datasets share one scope-specific temporal series, but declare
 `identity_stable=false`; their temporal response compares area totals and
 returns no parcel-level added/removed/modified claims.
 
+For `reference_layer_name=building_registry`, the primary metric is exact
+intersected building-footprint area in hectares. Supplemental server-owned
+metrics expose register building/status counts, aggregate building-unit and
+address-status counts, and confirmed GRB matches. Filtered `feature_count`
+metrics apply their configured property filter in PostGIS just like filtered
+area/sum metrics. Address labels and house/box numbers are never part of the
+queryable Feature properties or response contract.
+
+The governed snapshot is scoped to its persisted `area_id`. The frontend may
+prefer it over the regional GRB building layer only when that exact Area is
+active; another municipality or the full region must continue to use the
+regional GRB Dataset. No new register-specific API endpoint exists: upload,
+GeoJSON, exact selection and temporal provenance use the existing Dataset
+contracts.
+
 ## Local GeoIntel assistant
 
 The assistant is an optional read-only language interface over persisted

docs/DATA_SOURCES.md

@@ -329,12 +329,44 @@ quality metrics.
 
 ## Gebouwenregister
 
-- Naam: Gebouwenregister Vlaanderen
-- Type: vector/API/metadata
-- Gebruik: gebouwmetadata en statusinformatie
-- Toegang: nader te bepalen
-- Cache: PostGIS/metadata tabellen
-- Prioriteit: V2
+The governed operator `scripts/provision_buildings_addresses_register.py`
+reads the official Digitaal Vlaanderen OGC API Features collections
+`Gebouw`, `Gebouweenheid` and `Adres`. The source is continuously updated;
+GeoIntel therefore creates a dated snapshot rather than claiming an annual
+historical series. Raw response pages, request URLs and SHA256 checksums are
+retained as operator evidence.
+
+Building polygons are clipped against the exact persisted Area in
+EPSG:31370, transformed to EPSG:4326 and persisted through the normal Dataset
+upload route with `source_name=digitaal_vlaanderen_buildings_addresses_register`
+and `reference_layer_name=building_registry`. Register lifecycle state remains
+separate from GRB geometry. Each register building receives an explicit
+`matched`, `review`, `ambiguous` or `unmatched` GRB reconciliation result; a
+low-confidence or duplicate match is never silently promoted.
+
+Building units use the official `GebouwObjectId` relation. The public address
+collection does not expose that relation directly, so addresses are linked
+only through an exact, unambiguous unit position or unambiguous polygon
+containment. Ambiguous and unmatched rows are counted in the manifest and are
+never forced to the nearest building.
+
+The queryable layer contains building polygons, lifecycle status and aggregate
+unit/address counts only. Street names, full addresses, house numbers and box
+numbers are excluded. Address counts are not households, dwellings, residents
+or population. Raw source pages remain restricted operator evidence and are
+not exposed by the API or map.
+
+Official endpoints and catalogues:
+
+- https://geo.api.vlaanderen.be/Gebouwenregister/ogc/features/v1/collections/Gebouw/items
+- https://geo.api.vlaanderen.be/Gebouwenregister/ogc/features/v1/collections/Gebouweenheid/items
+- https://geo.api.vlaanderen.be/Adressenregister/ogc/features/v1/collections/Adres/items
+- https://www.vlaanderen.be/datavindplaats/catalogus/gebouwen-en-adressenregister
+- https://www.vlaanderen.be/datavindplaats/catalogus/gebouwenregister
+
+Digitaal Vlaanderen is transitioning the download products in summer 2026.
+This operator uses the current production OGC API and does not depend on the
+retiring `/v2/extract` path.
 
 ## Lokale demo datasets
 

docs/DATA_SPECIFICATION.md

@@ -61,22 +61,43 @@ GRB-gebouwpolygonen worden gebruikt als ground-truth proxy. Niet absoluut perfec
 
 ### Rol
 
-Aanvullende gebouwinformatie bij geometrieën.
+Authoritative register lifecycle and relation metadata attached to a dated
+building snapshot. It complements GRB; it does not replace the separate GRB
+footprint evidence or its QA role.
 
 ### Gebruik
 
-- gebouwmetadata
-- identificatie
-- status
-- koppeling met GRB-gebouwpolygonen indien mogelijk
+- stable building object and version identity
+- official lifecycle status and geometry method
+- aggregate registered building-unit counts by lifecycle status
+- aggregate address counts by register status
+- classified reconciliation against persisted GRB geometry
 
 ### Type
 
-Vector/API/metadata.
+Official OGC API Features input, normalized polygon GeoJSON upload and
+PostGIS `vector_features` output.
 
-### Prioriteit
+### Persisted contract
 
-V2 of V1.5.
+- `dataset_role=reference`
+- `source_name=digitaal_vlaanderen_buildings_addresses_register`
+- `reference_layer_name=building_registry`
+- `temporal_granularity=snapshot`
+- stable building identity within the register, but no fabricated historical
+  observation between snapshots
+- polygon geometry clipped in EPSG:31370 and persisted as EPSG:4326
+- selection metrics: exact footprint hectares, building lifecycle counts,
+  unit counts, address-status counts and confirmed GRB match counts
+
+### Privacy and semantics
+
+Queryable properties may contain register object ids, lifecycle status,
+geometry method, aggregate unit/address counts and GRB reconciliation evidence.
+They must not contain `VolledigAdres`, `Straatnaam`, `Huisnummer`,
+`HuisnummerLabel` or `Busnummer`. Address and unit counts may not be labelled
+as population, residents, households or dwellings. Building footprint is
+ground area, not floor area, height or volume.
 
 ## OpenStreetMap
 

docs/STORAGE_ARCHITECTURE.md

@@ -133,6 +133,27 @@ artifact; Dataset and vector_feature rows remain the queryable PostGIS state.
 The manifest binds source, crop-code list and upload artifact checksums. A
 checksum conflict with an existing annual Dataset fails closed.
 
+Buildings and Addresses Register snapshot evidence lives under:
+
+```text
+storage/operator-evidence/buildings-addresses-register/mol/{observed-date}/
+  raw/
+    buildings_page_*.json
+    building_units_page_*.json
+    addresses_page_*.json
+  buildings_addresses_register.geojson
+  buildings_addresses_register.manifest.json
+```
+
+Raw pages contain the unmodified official response and are retained only as
+checksummed operator evidence. They can contain address labels and must never
+be served as a map/API artifact. The normalized GeoJSON deliberately contains
+one polygon per register building with lifecycle state, aggregate relation
+counts and classified GRB reconciliation only. It enters PostGIS exclusively
+through DatasetService and ordinary `vector_features`; the operator never
+writes database rows directly. The manifest binds all raw pages, the normalized
+artifact, exact Area boundary and every GRB partition used for reconciliation.
+
 Offline demo export artifacts can be inspected and cleaned with:
 
 ```bash

frontend/README.md

@@ -484,6 +484,14 @@ Object additions/removals stay hidden because annual parcel identity is not
 stable. The Sources inventory only labels the series available after real
 Datasets exist.
 
+When the governed Buildings and Addresses Register snapshot is loaded for Mol,
+the `Bebouwing` theme automatically prefers that richer Dataset only while the
+exact Mol Area is active. It shows register lifecycle, unit/address aggregate
+metrics and GRB reconciliation without exposing address labels. Selecting
+another municipality or the complete Kempen scope falls back to the complete
+regional GRB building layer. This avoids presenting a Mol-only snapshot as
+regional coverage.
+
 ## Useful repository scripts
 
 - `bash scripts/frontend_install.sh`

frontend/src/components/datasets/SourceCatalogPanel.tsx

@@ -108,6 +108,12 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
   )
   const bwkDatasets = ready.filter((dataset) => dataset.source_name === 'inbo_bwk_natura2000')
   const agricultureDatasets = ready.filter((dataset) => dataset.source_name === 'agentschap_landbouw_zeevisserij_agricultural_parcels')
+  const buildingsRegisterDatasets = ready.filter(
+    (dataset) => dataset.source_name === 'digitaal_vlaanderen_buildings_addresses_register',
+  )
+  const latestBuildingsRegister = [...buildingsRegisterDatasets].sort(
+    (left, right) => new Date(right.observed_at ?? 0).getTime() - new Date(left.observed_at ?? 0).getTime(),
+  )[0]
   const agricultureYears = agricultureDatasets
     .flatMap((dataset) => dataset.observed_at ? [new Date(dataset.observed_at).getUTCFullYear()] : [])
   const pendingSources = AVAILABLE_SOURCES.filter((source) => {
@@ -115,6 +121,7 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
     if (source.key === 'historical_orthophoto') return historicalOrthophotos.length === 0
     if (source.key === 'bwk') return bwkDatasets.length === 0
     if (source.key === 'agriculture') return agricultureDatasets.length === 0
+    if (source.key === 'buildings_register') return buildingsRegisterDatasets.length === 0
     return true
   })
   const themes = Object.keys(THEME_LABELS).map((theme) => {
@@ -174,7 +181,7 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
         ))}
       </div>
 
-      {waterinfoDatasets.length > 0 || historicalOrthophotos.length > 0 || bwkDatasets.length > 0 || agricultureDatasets.length > 0 ? (
+      {waterinfoDatasets.length > 0 || historicalOrthophotos.length > 0 || bwkDatasets.length > 0 || agricultureDatasets.length > 0 || buildingsRegisterDatasets.length > 0 ? (
         <div className="source-catalog-loaded" aria-label="Aanvullende ingeladen bronnen">
           {waterinfoDatasets.length > 0 ? (
             <article>
@@ -204,6 +211,17 @@ export function SourceCatalogPanel({ datasets }: SourceCatalogPanelProps): JSX.E
               <p>Oppervlakte en officiële hoofdteeltgroepen zijn historisch vergelijkbaar; perceelidentiteiten blijven bewust niet gekoppeld tussen jaren.</p>
             </article>
           ) : null}
+          {latestBuildingsRegister ? (
+            <article>
+              <strong>Gebouwen- en Adressenregister</strong>
+              <span>
+                {(latestBuildingsRegister.feature_count ?? 0).toLocaleString('nl-BE')} gebouwen · {' '}
+                {Number(latestBuildingsRegister.source_metadata?.['building_unit_count'] ?? 0).toLocaleString('nl-BE')} eenheden · {' '}
+                {Number(latestBuildingsRegister.source_metadata?.['linked_address_count'] ?? 0).toLocaleString('nl-BE')} gekoppelde adressen
+              </span>
+              <p>Registerstatus en geaggregeerde koppelingen voor Mol; adreslabels en persoonsgegevens worden niet in de kaartlaag getoond.</p>
+            </article>
+          ) : null}
         </div>
       ) : null}
 

frontend/src/components/map/MapWorkspace.tsx

@@ -120,8 +120,22 @@ function datasetMatchesTheme(dataset: DatasetCreateResponse, theme: DataTheme):
   return theme.tokens.some((token) => searchText.includes(token))
 }
 
-function pickThemeDataset(datasets: DatasetCreateResponse[], theme: DataTheme): DatasetCreateResponse | null {
-  const candidates = datasets.filter((dataset) => datasetMatchesTheme(dataset, theme))
+function datasetCoversSelectedArea(dataset: DatasetCreateResponse, selectedAreaId: string | null): boolean {
+  const coverageScope = String(dataset.source_metadata?.['coverage_scope'] ?? '')
+  if (coverageScope !== 'municipality' || !dataset.area_id) {
+    return true
+  }
+  return Boolean(selectedAreaId) && dataset.area_id === selectedAreaId
+}
+
+function pickThemeDataset(
+  datasets: DatasetCreateResponse[],
+  theme: DataTheme,
+  selectedAreaId: string | null,
+): DatasetCreateResponse | null {
+  const candidates = datasets.filter(
+    (dataset) => datasetMatchesTheme(dataset, theme) && datasetCoversSelectedArea(dataset, selectedAreaId),
+  )
   candidates.sort((left, right) => {
     const score = (dataset: DatasetCreateResponse) =>
       (dataset.reference_layer_name && theme.tokens.includes(dataset.reference_layer_name.toLowerCase()) ? 1_000_000 : 0) +
@@ -129,6 +143,7 @@ function pickThemeDataset(datasets: DatasetCreateResponse[], theme: DataTheme):
       (dataset.source_name === 'department_omgeving_land_use' ? 90_000 : 0) +
       (dataset.source_name === 'inbo_bwk_natura2000' ? 95_000 : 0) +
       (dataset.source_name === 'agentschap_landbouw_zeevisserij_agricultural_parcels' ? 98_000 : 0) +
+      (dataset.source_name === 'digitaal_vlaanderen_buildings_addresses_register' ? 120_000 : 0) +
       (dataset.dataset_role === 'reference' ? 10_000 : 0) +
       (dataset.observed_at ? new Date(dataset.observed_at).getTime() / 100_000_000 : 0) +
       (dataset.feature_count ?? dataset.vector_summary?.feature_count ?? 0)
@@ -636,9 +651,9 @@ export function MapWorkspace({
   const themeDatasetMap = useMemo(
     () =>
       Object.fromEntries(
-        DATA_THEMES.map((theme) => [theme.id, pickThemeDataset(availableMapDatasets, theme)]),
+        DATA_THEMES.map((theme) => [theme.id, pickThemeDataset(availableMapDatasets, theme, selectedMapAreaId)]),
       ) as Record<DataThemeId, DatasetCreateResponse | null>,
-    [availableMapDatasets],
+    [availableMapDatasets, selectedMapAreaId],
   )
   const activeTheme = DATA_THEMES.find((theme) => theme.id === activeThemeId) ?? DATA_THEMES[0]
   const activeThemeMapStyle = DATA_THEME_MAP_STYLES[activeTheme.id]
@@ -740,7 +755,7 @@ export function MapWorkspace({
   }, [activeTemporalSeries])
 
   useEffect(() => {
-    if (advancedMode || !activeThemeDataset || (selectedMapDataset && datasetMatchesTheme(selectedMapDataset, activeTheme))) {
+    if (advancedMode || !activeThemeDataset || selectedMapDataset?.id === activeThemeDataset.id) {
       return
     }
     onOpenDatasetInMap(activeThemeDataset)

frontend/src/lib/datasetDisplay.ts

@@ -9,6 +9,7 @@ const DATASET_LABEL_BY_LAYER: Record<string, string> = {
   forest: 'Bos en groen',
   nature_value: 'Natuurwaarde',
   agriculture: 'Landbouwgebruikspercelen',
+  building_registry: 'Gebouwenregister',
   regional_boundary: 'Grens vervoerregio Kempen',
   municipality_boundaries: 'Gemeentegrenzen Kempen',
 }
@@ -17,6 +18,7 @@ const DATASET_SOURCE_LABELS: Record<string, string> = {
   department_omgeving_land_use: 'Departement Omgeving',
   agentschap_landbouw_zeevisserij_agricultural_parcels: 'Agentschap Landbouw en Zeevisserij',
   digitaal_vlaanderen_orthophoto: 'Digitaal Vlaanderen',
+  digitaal_vlaanderen_buildings_addresses_register: 'Digitaal Vlaanderen',
   grb: 'GRB',
   historical_landuse: 'Digitaal Vlaanderen',
   inbo_bwk_natura2000: 'INBO',

scripts/README.md

@@ -1481,6 +1481,33 @@ Datasets. `--force` refreshes retained evidence but cannot silently replace a
 conflicting persisted annual checksum. Use `--scope mol` for an independent
 municipal series.
 
+## Buildings and Addresses Register snapshot
+
+Prepare and audit the current official Mol snapshot without persistence:
+
+```bash
+docker exec geointel python /app/scripts/provision_buildings_addresses_register.py --fetch-only
+```
+
+Import the audited artifact through the canonical Dataset upload route:
+
+```bash
+docker exec geointel python /app/scripts/provision_buildings_addresses_register.py
+```
+
+The operator requires a persisted Mol Area and the complete regional GRB
+buildings Dataset with valid manifest/partition checksums. It reads only the
+official `Gebouw`, `Gebouweenheid` and `Adres` OGC collections, clips in
+EPSG:31370 and retains every raw response page under the storage volume.
+`--force` refetches evidence; it cannot overwrite a conflicting snapshot for
+the same Area/date. Safety limits are configurable with `--page-limit`,
+`--max-buildings`, `--max-units` and `--max-addresses`.
+
+Only aggregate unit/address counts enter the queryable building layer. Review
+`address_relations`, `grb_reconciliation`, checksums and limitations in the
+manifest before accepting a broader import. Raw address response pages are
+operator evidence and must not be published.
+
 ## Tower deployment
 
 Push the local branch to Gitea, then rebuild the Unraid/Tower Docker runtime:

scripts/run_readiness_check.sh

@@ -50,6 +50,7 @@ ${PYTHON_BIN} -m py_compile scripts/provision_official_landuse_timeseries.py
 ${PYTHON_BIN} -m py_compile scripts/provision_waterinfo_station_history.py
 ${PYTHON_BIN} -m py_compile scripts/provision_mol_bwk_natura2000.py
 ${PYTHON_BIN} -m py_compile scripts/provision_agricultural_parcel_history.py
+${PYTHON_BIN} -m py_compile scripts/provision_buildings_addresses_register.py
 ${PYTHON_BIN} -m py_compile scripts/provision_regional_timeseries.py
 ${PYTHON_BIN} -m py_compile scripts/geographic_scopes.py
 ${PYTHON_BIN} -m py_compile scripts/provision_geographic_scope.py