This 30x40 3 bedroom floor plan fits a single story on a 40'-0" × 30'-0" rectangle and provides 1,140 sq ft of living space. There is no garage, and the front porch sits outside the rectangle. The living room, at 12'-3" × 17'-2", is the largest room. It shares an open plan with a 10'-3" × 8'-8" kitchen and a 10'-3" × 8'-2" dining area.
The sleeping rooms are grouped along a 3'-7" × 19'-2" hall. Bedroom 2 measures 10'-0" × 9'-5" and Bedroom 3 measures 10'-0" × 9'-4". They are served by a 10'-0" × 4'-6" hall bath and a 3'-7" × 4'-6" laundry closet. The primary bedroom is 14'-8" × 10'-5". It includes an 8'-8" × 4'-2" walk-in closet and an 8'-8" × 5'-10" private bath.
Layout highlights
- Single-story 40'-0" × 30'-0" rectangle with 1,140 sq ft of living space.
- Living room of 12'-3" × 17'-2" opens to a 10'-3" × 8'-8" kitchen.
- Dining area of 10'-3" × 8'-2" sits beside the kitchen in the open plan.
- Primary suite: 14'-8" × 10'-5" bedroom, 8'-8" × 4'-2" walk-in closet, 8'-8" × 5'-10" bath.
- Two 10'-0"-wide secondary bedrooms share a 10'-0" × 4'-6" hall bath and a laundry closet.
Room sizes
| Room | Size | Area |
|---|---|---|
| Bedroom 3 | 10'-0" × 9'-4" | 93 sq ft |
| Hall Bath | 10'-0" × 4'-6" | 45 sq ft |
| Bedroom 2 | 10'-0" × 9'-5" | 94 sq ft |
| Hall | 3'-7" × 19'-2" | 68 sq ft |
| Laundry Closet | 3'-7" × 4'-6" | 16 sq ft |
| Living Room | 12'-3" × 17'-2" | 211 sq ft |
| Kitchen | 10'-3" × 8'-8" | 89 sq ft |
| Dining | 10'-3" × 8'-2" | 84 sq ft |
| Primary Bedroom | 14'-8" × 10'-5" | 153 sq ft |
| Walk-in Closet | 8'-8" × 4'-2" | 36 sq ft |
| Primary Bath | 8'-8" × 5'-10" | 50 sq ft |
Who this plan suits
This plan suits households that want three bedrooms and two baths on one level without a garage, such as first-time builders, downsizers, or a rental or guest house. It needs a lot that can hold a 40'-0" × 30'-0" footprint plus the front porch and local setbacks.
How this plan was made
It was generated in AI Architectures Plan Studio from this one-line brief: “One-story house on a 30 x 40 ft rectangular footprint (about 1,200 sq ft): 3 bedrooms, 2 baths, open kitchen and living, laundry closet, no garage, porch outside the rectangle.” An AI architect drafted the room program, a layout solver placed every wall and door, and the plan was checked automatically for room sizes, circulation and daylight. The same project produced the PDF sheets, layered DXF, IFC model and 3D model you can download above.
Frequently asked questions
What is a 30x40 3 bedroom floor plan?
It is a house layout built on a 30 by 40 ft rectangle with three bedrooms. This version is one story with 1,140 sq ft of living space, two baths, an open kitchen and living area, and a laundry closet. The porch sits outside the rectangle and is not counted in the living area.
What affects the lot and building cost for this plan?
The 40'-0" × 30'-0" footprint needs a lot with enough width and depth for setbacks and the porch. Cost depends on your foundation type, local labor and materials, finishes, and utility connections. Because the plan is a simple rectangle on one level, the roof and framing are straightforward, but you should get local quotes.
Can I change this plan by chat?
Yes. You can ask for changes in chat, such as adjusting room sizes, adding a garage on a chosen side, or fitting the plan to a narrower or wider lot. The layout is regenerated so the rooms still connect, and the room sizes are updated to match.
How do I use the PDF, DXF and IFC files?
The PDF is for reviewing the plan and sharing it with a builder, lender, or permit office. The DXF opens in CAD software for editing and drafting, and the IFC imports into BIM tools. Local codes and structural requirements still need to be checked by a licensed professional before construction.