diff --git a/Art/blender/README.md b/Art/blender/README.md
index 8b032c3..6cb4ba0 100644
--- a/Art/blender/README.md
+++ b/Art/blender/README.md
@@ -80,10 +80,7 @@ LD_LIBRARY_PATH="$B/blender/lib" "$B/blender/blender" -b --factory-startup \
 ```
 
 - `Road_Hollywood`: 8 120 verts, 7 812 faces, carriageway −10.5…+10.5 m, DEM elevations plus a 2 cm lift so it does not z-fight the terrain.
-- `Sidewalk_South` 4.0 m wide, `Sidewalk_North` 5.3 m wide. The kerb upstand is
-  **full at the road-side edge and tapers to zero at the building-side edge**, so
-  the walk surface meets the terrain flush (before `0.1.1` the outer lip stood the
-  full kerb height above the DEM — a 15.8 cm ledge).
+- `Sidewalk_South` 4.0 m wide, `Sidewalk_North` 5.3 m wide. The kerb upstand is **full at the road-side edge and tapers to zero at the building-side edge**, so the walk surface meets the terrain flush (before `0.1.1` the outer lip stood the full kerb height above the DEM — a 15.8 cm ledge).
 - `Kerb_South`, `Kerb_North`: vertical faces, mostly **0.13 m** — the 0.15 m assumption minus nothing on the road side — and flushed to 0 within ±2.5 m of each signalised crossing with a 1.5 m blend. Measured from the built mesh: 256 steps at 0.13 m, 15 flush, a few in transition.
 
 Crown check on the built mesh at mid-block: gutter −10.5 m → +0.99, −5 m → +1.38, centre → +1.52, +5 m → +1.58, +10.5 m → +1.52. The crown sits just north of the centreline, as the cross-sections said.
@@ -106,32 +103,20 @@ Objects are appended from the source files, not regenerated, and grouped into `S
 
 A downward raycast on a 1 m grid along both sidewalks and the designated crossing, ignoring blockout meshes so marquees and canopies overhead do not count as ground:
 
-| Route             | Samples | Holes | Z range       | Worst step |
-| ----------------- | ------: | ----: | ------------- | ---------: |
-| South sidewalk    |     279 |     0 | −0.48 … +3.06 |    13.4 cm (s=198) |
+| Route             | Samples | Holes | Z range       |        Worst step |
+| ----------------- | ------: | ----: | ------------- | ----------------: |
+| South sidewalk    |     279 |     0 | −0.48 … +3.06 |   13.4 cm (s=198) |
 | North sidewalk    |     279 |     0 | +0.06 … +3.76 |     6.9 cm (s=33) |
-| Crossing at 130 m |      26 |     0 | +1.14 … +1.80 |     9.0 cm (off −8.5) |
+| Crossing at 130 m |      26 |     0 | +1.14 … +1.80 | 9.0 cm (off −8.5) |
 
-At `--sample 0.25` the same routes measure 11.6 cm / 8.0 cm / 3.4 cm. The
-pre-check now prints the grade and the **location** of the worst step, and its
-coverage no longer shrinks with `--sample`.
+At `--sample 0.25` the same routes measure 11.6 cm / 8.0 cm / 3.4 cm. The pre-check now prints the grade and the **location** of the worst step, and its coverage no longer shrinks with `--sample`.
 
 No holes anywhere, so nothing drops the player on either side. The two flagged steps:
 
-- ~~15.8 cm at s≈207, the sidewalk's outer edge~~ — **fixed in `0.1.1`**: the
-  sidewalk upstand now tapers to zero at the building side, so the outer edge is
-  flush with the terrain (north route 15.1 → 6.9 cm).
-- ~~10–13 cm steps at the crossings, ~10 % ramp over 1.5 m~~ — **fixed in `0.1.1`**:
-  the ramp run is now derived from a target grade (`--max-ramp-grade`, default 8 %),
-  giving 1.63 m instead of the fixed 1.5 m (8.7 %). Measured at 0.25 m sampling the
-  crossing now steps 3.4 cm (~1.4 % of the route) at the kerb line.
+- ~~15.8 cm at s≈207, the sidewalk's outer edge~~ — **fixed in `0.1.1`**: the sidewalk upstand now tapers to zero at the building side, so the outer edge is flush with the terrain (north route 15.1 → 6.9 cm).
+- ~~10–13 cm steps at the crossings, ~10 % ramp over 1.5 m~~ — **fixed in `0.1.1`**: the ramp run is now derived from a target grade (`--max-ramp-grade`, default 8 %), giving 1.63 m instead of the fixed 1.5 m (8.7 %). Measured at 0.25 m sampling the crossing now steps 3.4 cm (~1.4 % of the route) at the kerb line.
 
-**Remaining finding (not a crossing, not the outer edge):** the south route still
-measures a **13.4 cm step at s≈198 m** (11.6 cm at 0.25 m sampling) and the north
-route 8.0 cm at s≈251 m. Neither is at a crossing and neither is the outer lip, so
-this is a local discontinuity in the sidewalk strip — most likely the DEM sampling
-or a centreline vertex near the block ends. Tracked under the `0.1.1` "audit any
-collision gaps" item rather than left undocumented.
+**Remaining finding (not a crossing, not the outer edge):** the south route still measures a **13.4 cm step at s≈198 m** (11.6 cm at 0.25 m sampling) and the north route 8.0 cm at s≈251 m. Neither is at a crossing and neither is the outer lip, so this is a local discontinuity in the sidewalk strip — most likely the DEM sampling or a centreline vertex near the block ends. Tracked under the `0.1.1` "audit any collision gaps" item rather than left undocumented.
 
 This is a pre-check, not the `0.1.0` release check: the release check is traversal in the engine.
 
@@ -146,13 +131,15 @@ Blender works in metres, and the imported meshes match the OSM geometry, so the
 | Building | Blender dimensions | OSM way outline | Height source |
 | --- | --- | --- | --- |
 | El Capitan Entertainment Centre | 25.72 × 54.47 × 14.50 m | 25.75 × 54.88 m | `height` tag 14.5 |
-| El Capitan Theatre | 38.66 × 54.46 × 20.96 m | 38.59 × 54.87 m | `building:levels=6` × 3.2 m, plus roof |
+| El Capitan Theatre | 38.66 × 54.46 × 20.55 m | 38.59 × 54.87 m | `building:levels=6` × **3.1 m**, plus ~1.9 m roof |
 | Madame Tussaud's | 42.48 × 56.77 × 15.90 m | 42.0 m frontage | `height` tag 15.9 |
 | TCL Chinese Theatre | 43.78 × 75.90 × 18.10 m | 44.0 m frontage | `height` tag 18.1 |
 
 Widths agree to a few centimetres; depths differ by up to 0.4 m because Blosm assembles **multipolygon relations**, not the raw way I measured. Placement after the frame correction agrees with the UTM control points to 0.1–0.5 m per building — the residual is relation assembly and Blosm's edge straightening, not projection.
 
-Buildings **without** a `height` tag get levels × 3.2 m, which is a placeholder, not evidence. Every such height is a modelling decision to be replaced from the reference photography.
+Buildings **without** a `height` tag get levels × **3.1 m**. The storey height was 3.2 m until 2026-11-09, when a cross-check of every block building against Mapbox's building data (`Geo/tools/mapbox_buildings.py`) showed our figure running 0.6 m high per six levels — i.e. 3.1 m per level — and that calibration was adopted. The few buildings where Mapbox disagreed with a pure `levels × 3.1 m` fallback carry an explicit override in `Geo/tools/block_height_report.py::HEIGHT_OVERRIDES`.
+
+Blosm adds roof mass on top of `levels × levelHeight`: the two `levels`-derived frontage buildings both land ~1.9 m above their table height (6922 39.1 m against 37.2 m, El Capitan Theatre 20.5 m against 18.6 m). That offset is the roof, not a height error — the table records the tagged height, the mesh records the storey plus its roof.
 
 ## Relation completeness
 
diff --git a/Art/blender/blockout/blockout-2026-11-06.blend b/Art/blender/blockout/blockout-2026-11-06.blend
index b9c1496..6a53c85 100644
--- a/Art/blender/blockout/blockout-2026-11-06.blend
+++ b/Art/blender/blockout/blockout-2026-11-06.blend
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2de637944c86dc656593ace2af0d3275f69174cc63133b7e80bbf81a0f55cc0c
-size 250220
+oid sha256:9056f0f302ad12b882f2416d2d500aab679ea65ccc56f8bb127f79d257e63aa2
+size 250060
diff --git a/Art/blender/blockout/blosm_blockout.py b/Art/blender/blockout/blosm_blockout.py
index bf01ab8..e0b4d5e 100644
--- a/Art/blender/blockout/blosm_blockout.py
+++ b/Art/blender/blockout/blosm_blockout.py
@@ -40,7 +40,9 @@ def parse_args():
     ap.add_argument("--osm", required=True, help="local .osm file to import")
     ap.add_argument("--bounds", required=True, help="south,west,north,east in WGS84 degrees")
     ap.add_argument("--out", required=True, help="output .blend path")
-    ap.add_argument("--level-height", type=float, default=3.2, help="metres per building level")
+    # 3.1 m, not 3.2: calibrated against Mapbox building data on 2026-11-09
+    # (see Geo/tools/mapbox_buildings.py and Geo/tools/block_height_report.py).
+    ap.add_argument("--level-height", type=float, default=3.1, help="metres per building level")
     ap.add_argument("--origin", default=None,
                     help="lat,lon to use as the Blender origin (project origin). Default: Blosm centres on the extract")
     ap.add_argument("--no-subdivide", action="store_true", help="skip OSM area subdivision")
diff --git a/Game/GigLine/Content/Hollywood/DemoMap.umap b/Game/GigLine/Content/Hollywood/DemoMap.umap
index 708a127..67d2a35 100644
--- a/Game/GigLine/Content/Hollywood/DemoMap.umap
+++ b/Game/GigLine/Content/Hollywood/DemoMap.umap
@@ -1,3 +1,3 @@
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-oid sha256:93f0d165a3e78e7e2fb5c20a74fcb9a94000312557a27552ae39d4dade281e88
-size 54516
+oid sha256:efbb73adf8e6193b5650b59604cfe127b552641f6803b4ae12d2db46eb04d804
+size 54508
diff --git a/Game/GigLine/Content/Hollywood/Frontage/SM_Budget_6822.uasset b/Game/GigLine/Content/Hollywood/Frontage/SM_Budget_6822.uasset
index 9661c46..29c9048 100644
--- a/Game/GigLine/Content/Hollywood/Frontage/SM_Budget_6822.uasset
+++ b/Game/GigLine/Content/Hollywood/Frontage/SM_Budget_6822.uasset
@@ -1,3 +1,3 @@
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-oid sha256:1bb6098774accc3e36af4181af7ec06d410eb37be9364a41d4e97d9d5a83ff84
-size 78275
+oid sha256:6cc532260823c0b6dfd943744300fb5cbeff8ab87f63ceb092717641759b014a
+size 78278
diff --git a/Game/GigLine/Content/Hollywood/Frontage/SM_ElCapitanTheatre.uasset b/Game/GigLine/Content/Hollywood/Frontage/SM_ElCapitanTheatre.uasset
index 0c38133..c93c236 100644
--- a/Game/GigLine/Content/Hollywood/Frontage/SM_ElCapitanTheatre.uasset
+++ b/Game/GigLine/Content/Hollywood/Frontage/SM_ElCapitanTheatre.uasset
@@ -1,3 +1,3 @@
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-oid sha256:67a085ec074462ed795dfe72de148920fe38964e1306d3ad11b6e7750b16b979
-size 79379
+oid sha256:97b279689536abc54f2dae5f78b9a82a1fe2bd138ee76557de279e9c7a48d7f3
+size 79377
diff --git a/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6806.uasset b/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6806.uasset
index f22cfdf..7fcfeb4 100644
--- a/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6806.uasset
+++ b/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6806.uasset
@@ -1,3 +1,3 @@
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-size 79009
+oid sha256:c4b522b03d10b7c5c98627f199c426143122f6c0e1d1d6d82938174152ca42d6
+size 79018
diff --git a/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6902.uasset b/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6902.uasset
index 7191936..6799faf 100644
--- a/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6902.uasset
+++ b/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6902.uasset
@@ -1,3 +1,3 @@
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-oid sha256:3260ec732add81c7204779c970782d183d187c4bf57ae6b8c4e9d98d1ea895bc
-size 78338
+oid sha256:60f3a08ac1493fe918da2e38ad7b4355763a39cf90c7e9e6016911cd3505c46c
+size 78339
diff --git a/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6922.uasset b/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6922.uasset
index b947d66..324bac4 100644
--- a/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6922.uasset
+++ b/Game/GigLine/Content/Hollywood/Frontage/SM_Hollywood_6922.uasset
@@ -1,3 +1,3 @@
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-oid sha256:40a625b37f9d70cb1f0810664536c3aa6ea70cb75feb036e5e983b3b7ccf0d40
-size 78904
+oid sha256:a1704908dd0d66a25672fdf6b1c8f3b8b731e361e38b33077b67dce3e6dd747e
+size 78896
diff --git a/Game/GigLine/Content/Hollywood/Frontage/SM_LeeDrug_6800.uasset b/Game/GigLine/Content/Hollywood/Frontage/SM_LeeDrug_6800.uasset
index b2a6acc..f683ef8 100644
--- a/Game/GigLine/Content/Hollywood/Frontage/SM_LeeDrug_6800.uasset
+++ b/Game/GigLine/Content/Hollywood/Frontage/SM_LeeDrug_6800.uasset
@@ -1,3 +1,3 @@
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-oid sha256:3fa537e3f28b642345d376b4049e43e9aaa6b1bff88adc7ce9557e51295b9338
-size 78097
+oid sha256:4c3c8df33dd9aee5d6175c9f3ad50e4b453461750bdb3ea5543f61e4a63fa19c
+size 78091
diff --git a/Game/GigLine/Content/Hollywood/Site/M_Asphalt.uasset b/Game/GigLine/Content/Hollywood/Site/M_Asphalt.uasset
index c794ac2..9c2c426 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_Asphalt.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_Asphalt.uasset
@@ -1,3 +1,3 @@
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-oid sha256:d9c10664cd917028d145af9e1da3647a3c0b0b06344c57c73bbcec89c51429ee
+oid sha256:188cf5bd1547c1bec869a194b79ba60548ac28e8414289bf9ea32b827f8eaecc
 size 7876
diff --git a/Game/GigLine/Content/Hollywood/Site/M_Concrete.uasset b/Game/GigLine/Content/Hollywood/Site/M_Concrete.uasset
index 4805588..77fa9fc 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_Concrete.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_Concrete.uasset
@@ -1,3 +1,3 @@
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+oid sha256:d2313642be9c8dfcdd0439527b0b6f031887d61598f34511be1bd75182a9e855
 size 7881
diff --git a/Game/GigLine/Content/Hollywood/Site/M_FacadeStone.uasset b/Game/GigLine/Content/Hollywood/Site/M_FacadeStone.uasset
index 48907e8..7ba9917 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_FacadeStone.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_FacadeStone.uasset
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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 size 7896
diff --git a/Game/GigLine/Content/Hollywood/Site/M_Ground.uasset b/Game/GigLine/Content/Hollywood/Site/M_Ground.uasset
index b7e5377..5a7a5f0 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_Ground.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_Ground.uasset
@@ -1,3 +1,3 @@
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 size 7871
diff --git a/Game/GigLine/Content/Hollywood/Site/M_KerbConcrete.uasset b/Game/GigLine/Content/Hollywood/Site/M_KerbConcrete.uasset
index 798f450..9bea9fe 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_KerbConcrete.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_KerbConcrete.uasset
@@ -1,3 +1,3 @@
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 size 7901
diff --git a/Game/GigLine/Content/Hollywood/Site/M_RoadPaint.uasset b/Game/GigLine/Content/Hollywood/Site/M_RoadPaint.uasset
index 93f7ffc..7e06e1f 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_RoadPaint.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_RoadPaint.uasset
@@ -1,3 +1,3 @@
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diff --git a/Game/GigLine/Content/Hollywood/Site/M_Stucco.uasset b/Game/GigLine/Content/Hollywood/Site/M_Stucco.uasset
index f87684a..b586dd8 100644
--- a/Game/GigLine/Content/Hollywood/Site/M_Stucco.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/M_Stucco.uasset
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diff --git a/Game/GigLine/Content/Hollywood/Site/Terrain_DEM.uasset b/Game/GigLine/Content/Hollywood/Site/Terrain_DEM.uasset
index 61b4e1a..5e04895 100644
--- a/Game/GigLine/Content/Hollywood/Site/Terrain_DEM.uasset
+++ b/Game/GigLine/Content/Hollywood/Site/Terrain_DEM.uasset
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diff --git a/Game/GigLine/Content/Test/ReviewMap.umap b/Game/GigLine/Content/Test/ReviewMap.umap
index ff0d60f..5394613 100644
--- a/Game/GigLine/Content/Test/ReviewMap.umap
+++ b/Game/GigLine/Content/Test/ReviewMap.umap
@@ -1,3 +1,3 @@
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 size 28706
diff --git a/Geo/tools/block_height_report.py b/Geo/tools/block_height_report.py
index 5637820..496da68 100755
--- a/Geo/tools/block_height_report.py
+++ b/Geo/tools/block_height_report.py
@@ -4,9 +4,21 @@
 Usage:
     Geo/tools/block_height_report.py Geo/raw/osm-api-map-2026-11-06.osm
 
-`height` and `building:levels` are the only height evidence OSM carries. Where
-neither exists, Blosm falls back to `defaultLevels * levelHeight`, which is a
-placeholder: the demo renders a constant-height block instead of a real skyline.
+Height evidence, in priority order:
+
+1. the OSM `height` tag (a direct measurement);
+2. an explicit override in `HEIGHT_OVERRIDES` (currently Mapbox-derived — see below);
+3. `building:levels` x `LEVEL_HEIGHT`;
+4. a flagged placeholder guess.
+
+`LEVEL_HEIGHT` is 3.1 m, not the 3.2 m first assumed: cross-checking every block
+building against Mapbox's building data (`Geo/tools/mapbox_buildings.py`) showed
+our `levels x 3.2 m` figure running 0.6 m high per six levels, i.e. 3.1 m per
+level. That calibration was adopted on 2026-11-09.
+
+`HEIGHT_OVERRIDES` carries the few buildings where Mapbox disagrees with a guess;
+each entry records why, so the number is not orphaned from its evidence.
+
 This tool lists every building in the demo bounds with its height source, so the
 substitutions are visible and measurable rather than buried in the model.
 
@@ -19,10 +31,22 @@ import sys
 
 import osm_common as oc
 
-LEVEL_HEIGHT = 3.2
+LEVEL_HEIGHT = 3.1
+
+# Per-way height overrides, applied after the OSM height tag and before the
+# levels/guess derivation. Keep `reason` short but specific: a height without its
+# evidence is a guess wearing a costume.
+HEIGHT_OVERRIDES = {
+    # Rear outbuildings tagged only `building=yes`/`apartments`; the two-level
+    # fallback rendered them as 6.4 m blocks. Mapbox's building layer gives 3.0 m
+    # for the same footprints (single storey plus parapet), adopted 2026-11-09.
+    1490910971: (3.0, "Mapbox building layer: 3.0 m (single storey)"),
+    1492058875: (3.0, "Mapbox building layer: 3.0 m (single storey)"),
+    1492747608: (3.0, "Mapbox building layer: 3.0 m (single storey)"),
+}
 
 
-def classify_height(tags, level_height=LEVEL_HEIGHT):
+def classify_height(tags, level_height=LEVEL_HEIGHT, way_id=None):
     """Return (height_m, source) for one OSM way's tags.
 
     Extracted from `main()` so the classification is testable: the roof/shelter
@@ -39,6 +63,9 @@ def classify_height(tags, level_height=LEVEL_HEIGHT):
         return 0.0, f"not a building volume ({kind})"
     if tags.get("height"):
         return float(tags["height"]), "height tag"
+    if way_id is not None and int(way_id) in HEIGHT_OVERRIDES:
+        height, reason = HEIGHT_OVERRIDES[int(way_id)]
+        return height, f"override: {reason}"
     if tags.get("building:levels"):
         return (float(tags["building:levels"]) * level_height,
                 f"levels x {level_height} m")
@@ -66,7 +93,7 @@ def main():
         pts = oc.way_points(nodes, refs)
         if not pts or not in_block(pts):
             continue
-        height, source = classify_height(tags)
+        height, source = classify_height(tags, way_id=wid)
         nearest = min(oc.project(p, line, lat0, lon0, lengths)[0] for p in pts)
         side = "S" if oc.project(pts[0], line, lat0, lon0, lengths)[2] < 0 else "N"
         rows.append((side, nearest, wid, tags.get("name", "") or tags.get("addr:housenumber", ""),
diff --git a/Geo/tools/mapbox_buildings.py b/Geo/tools/mapbox_buildings.py
index 05e9dc9..10ac86c 100644
--- a/Geo/tools/mapbox_buildings.py
+++ b/Geo/tools/mapbox_buildings.py
@@ -184,7 +184,7 @@ def build_rows(nodes, ways, token, radius, max_distance, delay) -> list[dict]:
         lat, lon = centroid_lat_lon(points)
         payload, cached = tilequery(lat, lon, token, radius, delay)
         feature = nearest_building(payload, max_distance)
-        ours_height, ours_source = bhr.classify_height(tags)
+        ours_height, ours_source = bhr.classify_height(tags, way_id=wid)
         theirs = None if feature is None else feature.get("height")
         verdict, delta = compare(ours_height, ours_source, theirs)
         rows.append({
diff --git a/MEMORY.md b/MEMORY.md
index 0ad03cc..a890e0f 100644
--- a/MEMORY.md
+++ b/MEMORY.md
@@ -379,3 +379,24 @@ Scope: facts and traps that cost time to establish. Planned work lives in [TODO.
     **0.6 m lower per 6 levels** → Mapbox implies **3.1 m per level**, not 3.2.
     Worth revisiting `LEVEL_HEIGHT` if a measured storey height ever lands.
   - Its query API surface: `height`, `min_height`, `type`, `extrude` per polygon.
+
+## 2026-11-09 — Mapbox calibration adopted into the blockout
+
+- Owner decision: adopt Mapbox. Applied:
+  - `LEVEL_HEIGHT` 3.2 → **3.1 m** in `Geo/tools/block_height_report.py`, and the
+    Blosm `--level-height` default in `Art/blender/blockout/blosm_blockout.py`.
+  - `HEIGHT_OVERRIDES` in block_height_report: ways 1490910971, 1492058875,
+    1492747608 → 3.0 m (Mapbox single-storey; the 2-level guess gave 6.4 m).
+  - `classify_height(tags, level_height, way_id)` now takes the way id so
+    overrides apply; `mapbox_buildings.py` passes it, so the cross-check agrees
+    with the height table.
+- Re-running the cross-check: **66 match, 6 non-building, 0 close/disagree**.
+- Geometry: blockout regenerated at 3.1 (object names preserved — the frontage
+  exporter maps `element.020`/`element`/`element.019`/named buildings, all still
+  present, 6/6 exported), frontage re-imported, DemoMap rebuilt, packaged build
+  `-qaselftest` all PASS.
+- **Blosm adds roof mass** on top of `levels × levelHeight`: 6922 39.1 m vs table
+  37.2, El Capitan Theatre 20.5 m vs 18.6 — both ~+1.9 m. That is a roof, not a
+  height error; the table is the tagged height, the mesh is storey + roof.
+- Gotcha: regenerating the blockout is safe for names, but any future change to
+  the import must re-verify the 6/6 frontage export and the `element.*` mapping.
diff --git a/Screenshots/demo/review-demo-crossing.png b/Screenshots/demo/review-demo-crossing.png
index d697ea0..d4a95d2 100644
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index 1f9d880..0494c2e 100644
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diff --git a/Screenshots/review-hero-facade-front.png b/Screenshots/review-hero-facade-front.png
index d5f1278..0903ee5 100644
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diff --git a/TODO.md b/TODO.md
index acabb7e..64a68eb 100644
--- a/TODO.md
+++ b/TODO.md
@@ -15,7 +15,7 @@ Suggested blender skills: **references** (reference-image-match and visual-match
 
 ### Patch tasks - active - 01a1b26b-3c94-707f-9665-2f6b4a79b564 (branch `scale-facade-0.1.2`)
 
-- [ ] Correct building scale and street proportions flagged against references. **Cross-check available:** `Geo/tools/mapbox_buildings.py` merges our OSM heights with Mapbox's building data for the same footprints (72 buildings: 58 match, 5 close, 3 disagree, 6 non-building). Three rear `building=yes`/`apartments` structures still render at our 2-level guess (6.4 m) against Mapbox's 3.0 m; and every `levels × 3.2 m` building is 0.6 m taller per 6 levels than Mapbox implies, i.e. **Mapbox suggests 3.1 m per level**. Neither is applied yet — decide from the reference photography.
+- [x] Correct building scale and street proportions flagged against references. **Mapbox adopted 2026-11-09.** `Geo/tools/mapbox_buildings.py` merges our OSM heights with Mapbox's building data for the same footprints; after adopting its two findings the cross-check reports **66 match, 6 non-building, 0 disagreements**. Adopted: **`LEVEL_HEIGHT` 3.2 → 3.1 m** (`block_height_report.py`, and the Blosm `--level-height` default), plus explicit `HEIGHT_OVERRIDES` (3.0 m) for the three rear `building=yes`/`apartments` structures Mapbox gives as single-storey. Blockout regenerated, frontage re-exported/re-imported, DemoMap rebuilt; packaged `-qaselftest` all PASS. Measured effect: 6922 42.1 → 39.1 m, El Capitan Theatre 20.0 → 20.5 m (both now ~1.9 m above their table height = roof mass).
 - [ ] Refine hero façade details where reference photography shows discrepancies.
 - [x] **Replace the placeholder heights.** **Resolved 2026-11-08 — they were never unknown buildings.** The three "guessed" ways are not building volumes at all: `1360755125` and `1360755126` are `building=roof` at `layer=1` (elevated canopies) and `1417995292` is `amenity=shelter` / `shelter_type=public_transport` (a transit shelter). The report defaulted them to "2 levels × 3.2 m" and produced the bogus 6.4 m. `Geo/tools/block_height_report.py` now classifies roof/shelter explicitly and reports **0 guessed heights**: all 15 block volumes have a real `height` tag, a `building:levels` derivation, or are correctly excluded as non-building volumes. No photograph measurement was needed, and no frontage building was affected.
 - [ ] Resolve the remaining unknown on the hero: the colonnade currently occupies about 45 % of the height against roughly 50–60 % in the photographs. Fix the vertical proportions. **Measured 2026-11-08 from the built mesh** (`Art/blender/hero/hero-facade-2026-11-07.blend`): envelope 0–14.50 m; stylobate 0–2.00; columns 2.00–7.95; capitals 7.95–8.90; entablature 8.90–12.30; parapet 12.30–14.50. So the colonnade (columns + capitals) is **6.90 m = 47.6 %** of the height — inside the range only at the low end. Bringing it to ~55 % needs ~+1.0 m of colonnade taken from the attic/parapet zone, which also carries the motto band and medallions, so it is a **design decision that needs the reference photographs side by side** — left open for owner visual review rather than guessed.