01
CA / FAR Formula
Use computable area as defined by local law.
CA = computable floor area ÷ lot area02
Basic and Maximum CA
Some laws use these concepts, but values and effects are jurisdiction-specific.
03
CA vs TO
CA covers computable floor area; TO covers horizontal footprint.
04
CA Is Not a Floor Count
Never infer legal height or floors from CA alone.
FAQ
Frequently Asked Questions
Does this tool confirm project approval?+
No. It performs mathematical calculations using supplied values and does not replace municipal law, professional analysis or official approval.
Are the parameters the same across Brazil?+
No. Zoning limits and definitions vary by municipality, zone and the applicable version of local rules.