The development envelope is the three-dimensional shape a parcel's rules allow: the volume left after height limits, setbacks, density caps, parking requirements, and lot coverage have each taken their bite. It is the honest answer to 'what can be built here', and it exists before any architect draws. Reading the envelope is how a lot's real capacity is separated from its owner's hopes.
Buildable capacity=the lowest of height, density, setbacks, FLR, parking, and lot coverage
- The limits
- Height, density, setbacks, FLR, parking, and lot coverage, each read from the parcel's transect in the current adopted Miami 21.
- The conversion
- Each limit is expressed in the same unit, a count of units or of square feet, so the six can be compared directly.
- The honest answer to what can be built here, and it exists before anyone draws a line.
- Blind to feasibility. An envelope shows what is allowed, never what pays, and the two are often far apart.
- Unused envelope is value the current owner holds and is not being paid for.
- Ask which rule binds first. Every parcel has one, and it is rarely the rule the owner talks about.
The same 7,500 SF lot, counted three ways, on a transect that allows 36 units to the acre.
Density binds first here, which makes the height limit free and irrelevant. One block over, the answer flips.
Related terms
All termsFLR (Floor Lot Ratio)
Floor lot ratio caps how much building area a parcel can carry: lot size multiplied by the ratio equals maximum buildable area.
DevelopmentSetback
A setback is the mandatory distance a building must keep from its lot lines: front, sides, and rear.
DevelopmentLand Residual Value
Land residual value is what a developer can rationally pay for a site: the value of the finished project, minus every cost to build it, minus the profit the risk demands.
Terms arrive with the writing.
The glossary grows as the Journal does, one email when something worth reading goes up. No noise.
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