Fairfield, CA Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- Front setback, RVL:40
- 30 ft to habitable portion
- Front setback, RL:10
- 20 ft to habitable portion
- Rear setback range
- 25 to 40 ft by zone
- Interior side yard (one side)
- 10 to 15 ft by zone
- Arterial frontage add-on
- +5 ft to front setback
- Governing table
- Table 25-2, § 25.20.3.1
Summary
Fairfield's Zoning Ordinance sets minimum yard setbacks by residential zone in Table 25-2. In the RVL:40 zone, homes must sit 30 feet back from the front property line, with rear and interior side-yard totals of 40 and 15 feet respectively, and the standards tighten in the denser RL:10 zone.
Table 25-2: RVL and RL District Development Regulations RVL:40 RVL:20 RVL:15 RL:10 Setbacks (feet) Front:
... to habitable portion of bldg. or side entry garage 30 25 20 20 ... to garage opening directly toward street 35 30 25 25 Street side yard 30 20 20 15
Interior side yard:
... minimum one side 15 10 10 10 ... total for both sides 40 30 20 20 Rear 40 30 25 25
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4962673; v0 updated 2026-02-17).
Full Breakdown
1 of the Fairfield Zoning Ordinance governs setbacks for the RVL and RL residential districts through Table 25-2, keyed to the density suffix appended to each zone (RVL:40, RVL:20, RVL:15, RL:10). Front setbacks to the habitable portion of the house or a side-entry garage run 30 feet in RVL:40, tapering to 25, 20, and 20 feet as density increases; where the garage faces the street directly, add five feet to each figure (35/30/25/25). Street-side yards on corner lots run 30, 20, 20, and 15 feet, and interior side yards require a 15/10/10/10-foot minimum on one side with a combined two-side total of 40/30/20/20 feet.
Rear yards must be 40, 30, 25, and 25 feet respectively. Footnote 8 allows a two-foot front-setback reduction where a separated sidewalk fronts the lot and the garage-to-property-line distance stays at least 18 feet, while footnote 9 adds five feet to the front setback on lots fronting an arterial roadway. 5 setbacks within the Hillside Overlay District when needed to meet the Hillside Management Guidelines, a direct nod to Fairfield's Green Valley hillside standards. All setback and lot-dimension measurements run from the outer boundary of any common area or public landscape easement on corner lots and lots backing a roadway (footnote 2).
The Community Development Department enforces these standards through the building permit and zoning clearance process; a permit that does not match the applicable district's Table 25-2 figures is denied at plan check.
Violations & Fines
Building without the required setback triggers a stop-work order and permit denial or revocation from the Community Development Department; the property owner must redesign or remove the encroaching structure. Because setbacks are enforced at plan check under Section 25.10.6, an unpermitted addition built into the setback is treated as a zoning violation subject to the City's administrative citation process in Chapter 1, Article I.
Frequently Asked Questions
Do setbacks change by zoning district in Fairfield?
Can I build closer to the street if I have a separated sidewalk?
Are hillside lots held to the same setbacks?
Sources & Official References
Other rules in Fairfield
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