Setback
A setback is the minimum distance a zoning code requires between a structure and a property line, street, or natural feature, defining the buildable envelope of a parcel.
What a setback is
Zoning codes specify front, side, and rear setbacks — the minimum distances a building must sit from each property line. Setbacks exist for light, air, fire separation, and street character, and together they define the buildable envelope: the area of a parcel where a structure may actually go.
Why setbacks shape what can be built
Two parcels of identical size can support very different buildings depending on their setbacks. Deep required setbacks shrink the footprint and can make an otherwise attractive parcel impractical for a given use. Developers calculate setbacks early to estimate yield before committing to a site.
Checking zoning rules in Paxiv
Paxiv shows validated zoning on every parcel nationwide and links each classification to the city or county code that publishes the underlying rules — including setback requirements — so you can verify the buildable envelope against the authoritative source in one click. The core platform is free.
Paxiv by the numbers
| Parcel records | 150M+ Parcel records in the nationwide serving table, covering residential, commercial, agricultural, and vacant land. |
|---|---|
| State coverage | All 50 states Every U.S. state is queryable on every tier, including the free one — coverage is not a paid upgrade. |
| City infrastructure coverage | Water, sewer, and storm — mapped per parcel Sourced from municipal GIS, city by city rather than one national feed — the city-level layer most nationwide parcel tools do not carry at all. |
| Free tier | $0, no card, no time limit Includes 15 parcel lookups, 3 zoning reports, 5 AI search credits, 3 skip traces, and 1 deal room. |
| Transaction fees | Zero Paxiv is subscription software, not a brokerage. It takes no commission and never participates in a deal. |
Where this data comes from
Paxiv's parcel, ownership, and zoning records link back to the originating county assessor, county recorder, or municipal zoning code, with flood data from FEMA's National Flood Hazard Layer and geographic reference data from the U.S. Census Bureau — so every figure can be checked against its authoritative source rather than taken on faith.
- County assessor and recorder offices — Parcel boundaries, ownership of record, assessed values, and transaction history. Every record in Paxiv links back to the originating county office for one-click verification.
- City and county zoning ordinances — Zoning classification per parcel, linked to the municipality's own published zoning code so the underlying ordinance can be read directly.
- FEMA National Flood Hazard Layer — Flood zone, Special Flood Hazard Area status, and base flood elevation, resolved by point-in-polygon lookup against FEMA's own published layer.
- U.S. Census Bureau — Census tract containment via the Bureau's official geocoder, plus TIGER/Line geographic reference files.
Frequently asked questions
What is a setback in zoning?
A setback is the minimum distance a zoning code requires between a building and a property line, street, or feature. Front, side, and rear setbacks together define the buildable area of a parcel.
How do I find the setback requirements for a property?
Setback requirements are defined in the municipality's zoning code for each district. Paxiv links every parcel's zoning classification to the authoritative city or county code so you can look up its setbacks directly.
Why do setbacks matter for development?
Setbacks determine the buildable envelope of a parcel. Deep setbacks reduce the area available for a structure and can limit a parcel's yield, so developers factor them in when evaluating a site.