Fairfax County, VA · Fairfax County Zoning Ordinance
I-4 provides for a wide range of industrial uses -- scientific research, development and training, offices, and medium-intensity production of goods -- at greater intensity than I-3. Height 75ft. FAR 0.50 (up to 0.70 by Board). Front setback equal to building height (at least 40ft). Landscaped open space min 15%. Min lot 20,000 sq ft. Section 2104.4.
Development standards in I-4
Maximum FAR
0.5
Maximum height
75 ft
Minimum lot size
20000 sq ft
Read from Fairfax County Zoning Ordinance, effective through 2026-07-01.
Permitted uses in I-4
AllowedLight Manufacturing
AllowedWarehouse / Distribution
AllowedOffice / R&D
Not AllowedSTR - Short-Term Rentals STRs not permitted in this zone.
Not AllowedResidential
"Conditional" means the use generally requires a public hearing or special-exception approval — a very different timeline and risk profile from a by-right permit.
This is the zone. What about the parcel?
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size, overlays, existing improvements and site conditions. Run a free address lookup to see
what applies to one property.