How zoning shapes housing costs: density, floor area ratio, height, setbacks, parking and approvals, and what each rule adds to the cost of a unit.
Zoning decides what may be built where: how many homes, how tall, how far from the lot line, with how many parking spaces, and through what approval process. Each of those rules exists for a reason, and each has a cost that rarely appears in the public debate about it. Cutting allowed density by a quarter, for example, spreads the same land cost across fewer homes and raises the cost of each one.
Zoning also determines process. A project that is allowed by right can move to permits directly; one that needs a rezoning or a variance enters a discretionary review whose length and outcome are uncertain. Time is money in development, so uncertainty is a cost too. Our articles here translate zoning rules into dollars per unit and dollars per month, so the tradeoff each rule represents can be judged on its merits.
Public rules touch nearly every line of a building's budget. Each has a purpose, and each has a cost that ends up somewhere.
Construction Costs
Cheaper cabinets and counters move the required rent of a new apartment by about $34 a month. Land, parking, building type, fees, time and interest rates move it far more. Here is the scale of each lever.
Regulation
Nothing about the building changes when construction start slips a year. The land loan, the taxes, the consultants and the contractor's price keep moving. We add it up and convert it into rent.
Parking
Surface, tuck-under, structured or underground: each kind of parking space has a construction cost, and each dollar of it must be recovered in rent. We work through what a parking requirement adds to a 120-unit project.
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