Plans, structure checks, permit sheets and the quote all come from one model of your timber house. Soon your whole office works on it together, and your client walks through it online.
| PLANS | Plans, sections, elevations, A3 sheets | |
| MAKERS | LIXIL, YKK AP, Panasonic… with prices | |
| STRUCT | 壁量 · 4分割 · N値 · beam checks | |
| PERMIT | 確認申請 sheets and checks | |
| QUOTE | Estimate from your own prices | |
| CLOUD | Team + client walk-through | 0.7 |
Coming in 0.7 · SumiCAD CloudYour team on one project, your client inside the house.
No account. No licence. Made by a working builder in Hokkaido.
SumiCAD is BIM: you build one 3D model, and the plans, elevations, sections, room areas, structure checks, permit sheets and the quote all read from it. Move a wall and they all update. Try it: drag the east wall.
Demo numbers for illustration. In SumiCAD the checks follow 令46条 and your own price list.
Six parts, one file. Everything a small builder or design office draws for a Japanese timber house.
Type the length, press Enter. Walls snap to the 910 grid, rooms find their own outline and give you m² and 帖. Doors and windows drop in at true size.
Draw it once on the plan; elevations, sections and sheets are drawn for you.
Save your own wall build-ups, floors, roofs and foundation profiles in a library. The next house starts with your details already there, layer by layer, with U-values.
Windows, doors, kitchens, baths, lights and finishes from real catalogues: sizes, options and list prices. No more searching PDFs for a 品番 or a price.
Data from the makers' published catalogues. SumiCAD is not affiliated with or endorsed by these makers.
壁量, 4分割 balance, N値 joints, post and beam sizes, floor stiffness and deflection. Red means NG, and one click adds the braces or the bigger beam.
Site area, coverage and FAR, heights, 24-hour ventilation, daylight, septic tank size and the sheet set. SumiCAD lists what is still missing before you file.
A licensed architect (建築士) must review and sign the set. SumiCAD prepares; a person decides.
Quantities come from the model; prices come from the catalogues and your own 掛率 and price list. Export to Excel and send it.
I build timber houses in Hokkaido. I made SumiCAD for my own work and I give it away. If you need a feature, ask: I add what builders really use.
If SumiCAD saves you a day, you can buy me a coffee on OFUSE. Never required.
Sign in from inside SumiCAD. Open a cloud project, it is yours while you edit; everyone else sees every change as you save. Each project keeps its own change log.
| Firm, with 1 editor | ¥1,000 |
| Each extra editor | ¥500 |
| Viewers and clients | Free |
The cloud is not needed to use SumiCAD. Servers cost money every month, so only firms that use the cloud pay, and only what it costs to run. Prices may change before launch.
Open the client portal demoTry it: code screen, 3D walk-through, drawings, comments
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