A floor plan is a contract with your future daily life. Learning to read one properly — before you build or buy — helps you catch problems while they're still just lines on paper.
Start with orientation
Find the north arrow. It tells you which rooms get morning light (east), harsh afternoon sun (west) and steady light (north). You want bedrooms and living spaces oriented for comfort, not baking west-facing glass.
Room-size benchmarks
A room can look generous on a plan and feel cramped in reality. Use these as sanity checks:
| Space | Comfortable size | Tight below |
|---|---|---|
| Master bedroom | 12 × 14 ft | 10 × 11 ft |
| Second bedroom | 10 × 12 ft | 9 × 10 ft |
| Living room | 12 × 18 ft | 11 × 13 ft |
| Kitchen counter run | 8+ ft clear | 6 ft |
| Corridor width | 3.5+ ft | 3 ft |
Trace the flow
Common red flags
- Bedrooms opening directly into the living/dining without a buffer.
- Toilet doors facing the kitchen or dining.
- Internal, windowless habitable rooms.
- Scattered columns mid-room (an inefficient, pricier structure).
- Dead corners and unusable "left-over" spaces.
Get an expert eye
Have a verified architect review your plan — or design one around how you actually want to live.
Frequently asked questions
What do the symbols on a floor plan mean?
Arcs are door swings, parallel lines in walls are windows, dashed lines are overhead elements, and filled rectangles or circles are columns. Every drawing should include a legend — ask if it doesn't.
What's the difference between carpet, built-up and super built-up area?
Carpet is usable floor inside walls; built-up adds wall thickness and balconies (10–15% more); super built-up adds shared spaces like lobbies (25–40% more). Always compare homes on carpet area.
Can a floor plan be changed after approval?
Minor internal changes are usually fine, but structural or footprint changes need re-sanction. Finalise the plan before approval to avoid paying twice.