Zoning Envelope / Buildable Area

The buildable envelope for a lot, usually the first calculation in schematic design. From the lot area and land-use zone it works out how much of the lot you may cover, how much floor area you may build and how much open space must stay.

• The maximum building footprint.
• The maximum gross floor area.
• The number of storeys that floor area implies.
• The minimum open space on the lot.
• Follows: PD 1096 (National Building Code), Rule VII.
• The local zoning ordinance decides the zone and can set tighter limits than the national code.

• Floor to Lot Area Ratio Calculator
• Allowable Floor Area Calculator (PD 1096)
• Building Setback Calculator (Philippines)
• Step-by-step guide: Zoning Envelope / Buildable Area