Plarchy

Plarchy is a house-plan app for people planning a home of their own. You list the rooms you need, give the house a rough shape and a lot size, and Plarchy turns that brief into five floor plans with real walls, doors and windows. Pick the one you like and it furnishes the plan, renders the exterior with AI, and gives you drawings a builder or architect can open. Every plan is a built model. Walls sit on shared centerlines, rooms are measured to the sixteenth of an inch, and a layout planner follows the rules a residential designer would: bedrooms off a hallway, the kitchen open to the dining room, the garage on a corner with a door into the house. The floor plan, the 3D model, the AI renders and every export come from that one model, so they always describe the same house. Each design page reads the plan back to you. It shows a room schedule, whether the house fits its brief and its lot, how much glass each bedroom gets, how far you walk from the garage to the kitchen, which doors are too narrow for a wheelchair, and a takeoff of walls, roof, floors, doors and windows. You can download the plan as a PDF plan set, a DXF for AutoCAD, Revit or SketchUp, a GLB model for Blender, or an IFC file for BIM tools. The backend is .NET 10 with PostgreSQL, Redis and a worker that runs the generation jobs, and the frontend is Next.js 16 with React Three Fiber for the 3D views.