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3D house model: for a game, a print, or a real home? Pick the right method
Make a 3D house model the right way for its use: SketchUp for real homes, AI generation for game props and dioramas, solid meshes for printing.
2 min read
Quick answer
How do I make a 3D house model?
It depends on what the house is for. For a real home, use architecture software such as SketchUp, which works from measured floor plans. For a game or diorama prop, an AI generator can turn a sketch or photo of a house into a textured exterior. For printing, make a closed, solid house without a hollow interior.
Three different jobs
A real house you'll build or renovate
You need measurements: wall thicknesses, window positions, floor heights. That's architecture software: SketchUp, Revit, or free options like Sweet Home 3D for interiors. These work from floor plans and give you dimensions you can trust.
AI generators don't give you real measurements. Don't use one to plan a build.
A house for a game, animation or diorama
Here the house is a prop: it has to look right and run well, not match a plan. This is where AI generation is fastest.
- From a sketch: draw the house front-on, or at a slight angle showing two sides. Sketch to 3D.
- From a photo: a clear photo of a real building, whole, without trees in front. Image to 3D.
- From words: "a small stone cottage with a thatched roof and a round wooden door, low-poly, game asset". Text to 3D.
AI generates the exterior shell. Interiors, doors that open and separate floors are things you add in Blender or the engine.
A house to 3D print
Printing wants a closed solid: no hollow rooms, no paper-thin walls, a flat base. An AI exterior is a good start. Then check wall thickness and close any holes: make an AI model watertight.
Making game houses work
- Keep it modular. Generate a set (cottage, shop, tower) in one style so a village reads as one place. Consistent art style.
- Watch the poly count. Background houses can be very light. Good poly counts for game assets.
- Add collision. A simple box per building is usually enough. Add collision to a 3D model.
- Greybox first. Block the level with cubes, then swap in final houses: greybox to final props.
Building a whole street or city?
Many houses add up to a different problem: streets, scale and performance. 3D city and building models covers that.
Try it
Sketch a house and generate it in Vi3W, then drop it into your scene.
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