Buying Land in Fairfax City, Virginia

A separate city, not part of the county that surrounds it

Fairfax City is an independent city under Virginia's city/county structure -- legally separate from Fairfax County even though the city sits entirely surrounded by the county and serves as the county's seat. This is a genuinely common point of confusion: "Fairfax" the city and "Fairfax County" are two different governments with two different zoning ordinances, planning departments, and tax structures, even though they share a name and border. If you're researching a Fairfax-area property, confirm which of the two jurisdictions actually governs the specific address before relying on either government's rules.

With a 2020 Census population of 24,146 (a 2025 estimate of roughly 26,772) across just 6.24 square miles of land, Fairfax City is small, dense, and built out. Its historic Old Town Fairfax core has seen active redevelopment since 2005, adding a new library, shops, restaurants, offices, and homes -- a built-out, urban-infill market rather than anything resembling raw land or rural acreage.

Zoning: the city's own ordinance and Zoning Division

Fairfax City maintains its own zoning ordinance, distinct from Fairfax County's, with residential, commercial, industrial, and public-use districts. The city's Zoning Division oversees permits, enforces regulations, and ensures compliance for development across all of those categories, independent of the county's Department of Planning and Development. Confirm the current zoning district and any permitted-use questions directly with the city's own Zoning Division before assuming anything about a specific Fairfax City parcel.

Septic, water, and an unresolved environmental-health question

Given Fairfax City's small, fully built-out footprint, essentially every parcel is expected to connect to municipal water and sewer rather than a private well or septic system. Search-indexed sources reviewed for this page indicate that projects within the City of Fairfax may require additional local approval alongside any application to the Fairfax County Health Department, but this research pass could not definitively confirm whether the City of Fairfax operates its own separate environmental health department or relies on the county's for onsite sewage and well functions. Rather than guess, this page flags that gap directly -- confirm with the city government which office actually handles any environmental health question for a specific Fairfax City address.

Practically speaking, that gap matters less here than it would in a rural county: with the entire city built out and connected to municipal utilities, a buyer is very unlikely to encounter a parcel that actually needs a new septic system or private well permit in the first place. The open question is really about who to call if a specific redevelopment or infill project does trigger an environmental-health review -- not whether typical land-buying due diligence here needs to include septic feasibility the way it would in a county like Fauquier or Loudoun.