Unity Editor tool
Generate buildings you can walk into, fit them to terrain, and bake them to prefabs. Full C# source included.
Hollow shells, or floor slabs with openings between storeys.
Turn any facade bay into a window, door or arch. Your edits survive rerolling the seed.
Size ranges, weighted roofs, opening rules, colours and materials. Four styles included, or make your own.
Flat, gable, shed, barrel and terrace roofs. Balconies, plus walls, floors, stairs, railings, ladders and bridges.
Stepped foundations and entrance stairs on slopes. How it works
Save one building exactly: settings, seed and manual edits. Place copies with their own settings.
Bake meshes, materials, colliders and LOD into a regular prefab. No regeneration needed.
Full C# source, offline documentation and a Home guide inside the Editor.
Put a building on a slope and fit the ground to it. Nothing changes on your terrain until you apply it.
See how the building sits. No heights are written.
Adjust the local patch, with stepped foundations and entrance stairs.
Put the terrain back the way it was. Undo works too.
Works with native Unity Terrain when the building fits inside one tile. Requirements
Built and tested on Unity 6000.3.25f1 with URP 17.3.0 (install URP separately). Player builds tested on Windows x64, Mono.
Other Unity versions, Built-in and HDRP haven't been tested yet.
You get hollow shells and floor slabs with openings. Room layouts, stairs between floors, furniture and character controllers are up to you.
A saved scene, an upright building at scale 1, native Terrain with a matching TerrainCollider, and the whole footprint inside one terrain tile.
Holes or conflicting edits can block fitting. Sculpting you do later is protected, not overwritten.
It isn't on the Asset Store yet. A link will show up on this page when it is.
Planned price: US$13.
Yes. OpenAI Codex and Claude Code helped throughout: code, procedural geometry and textures, docs, and this page. The screenshots are real Unity renders.
Update
Rules per face and per floor band, aligned or symmetric openings, arcade and balcony patterns.
Joined wings, L-shaped footprints and stepped heights, starting with two-wing buildings.
New package
A separate package, in the works. More here when there's something to show.
Email me. For bugs, include your Unity version, render pipeline and steps to reproduce.
holbansolutions@gmail.com