The Grey & White Room by Wig42 Original scene: https://blendswap.com/blend/13552 License: CC BY 3.0 https://creativecommons.org/licenses/by/3.0/ Plants credited by the original author to Disaster: https://www.blendswap.com/blends/view/74162 Rendering-resource conversion by Benedikt Bitterli: https://benedikt-bitterli.me/resources/ glTF conversion by Garrett Johnson: https://github.com/gkjohnson/3d-demo-data/tree/main/models/bitterli-rendering-resources BuildMart adaptation, 21 October 2026: optimized geometry, separate editable floor and feature-wall surfaces, new lighting and UV atlas, 512-sample diffuse lightmaps, normal-guided denoising, local reflections and fitted camera controls. Furniture belongs to the example scene; catalog tiles are selected separately. No creator endorsement implied. Lighting refinement, 22 October 2026: extended UV-island padding, 512 samples, photographic tone mapping and local scene reflections. Window backdrop: Suburban Garden by Dimitrios Savva and Jarod Guest, CC0, Poly Haven. https://polyhaven.com/a/suburban_garden Rendered view, 22 October 2026: 1024-sample path-traced fixed camera, denoised lighting, surface UV and visibility passes, and interactive catalog tile faces. Reflections and indirect colour are based on neutral materials. The preview is illustrative; it is not a photograph or a new trace for each tile combination.