How to draw a floor plan to scale

Planning workflow

1. Create a measurement list that distinguishes verified dimensions from estimates.
2. Draw the exterior envelope from one reference corner, then add major interior partitions.
3. Dimension wall faces consistently; do not mix centerline, framing, and finished-face measurements without labels.
4. Run a closure check: the sum of interior segments plus wall thicknesses should match the measured exterior span.

Formula or decision logic

For a paper scale of 1/4 inch = 1 foot, drawing length in inches equals real length in feet divided by 4. In AtriBuild, keep geometry in real units: stored length = entered length converted to millimeters. Record precision separately so a 10-foot estimate is not presented as a laser-verified 10 feet 0 inches.

Worked planning example

A measured exterior is 28 ft by 36 ft. At 1/4 inch = 1 foot, the paper outline is 7 in by 9 in. In the editor, enter 28 ft and 36 ft directly. If two rooms and a partition cross the 28-foot width, 11 ft + 0.5 ft + 16.5 ft = 28 ft, so the chain closes. If it totals 28 ft 7 in, resolve the conflict before placing cabinets.

Limitations and review boundary

• Existing buildings are rarely perfectly square or level.
• Wall-face and centerline dimensions are not interchangeable.
• A measured sketch is not a survey, permit set, or as-built certification.

Continue in design planning