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Fairfield, CA Right to Farm: Agricultural Zoning Protection (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

New AG subdivision lot size
20-80 acres by area type
Max building height
50 ft (CUP to exceed)
Front/street setback
25 feet
Grazing
permitted outright
Animal stable, ag processing, wells
Conditional Use Permit required
First zoning violation
infraction, up to $100 fine
Creek buffer near Green Valley/Suisun creeks
up to 200 ft dedicated

Summary

Fairfield's AG (Agriculture) zoning district, set out at Zoning Ordinance Section 25.26, protects farmland by permitting grazing and crop production by right and prohibiting incompatible residential, commercial and industrial uses. New agricultural subdivisions need 20 to 80 acres per lot, and structures like animal stables and wells require a Conditional Use Permit.

AG (Agriculture) District. The AG zoning district is intended to provide for the enhancement and preservation of agriculture. It is intended that the agriculture district restrict land uses to: livestock grazing; crop production and other activities customarily related uses to agricultural operations; and non-agricultural uses that are compatible with agricultural activities. It is also intended that the AG zoning district prohibit incompatible uses including certain residential, commercial, industrial, and recreational uses. [...] Lot Area (for new subdivisions): 20, 40, or 80 acres as indicated by suffix. [...] The 20 and 40 acre minimum shall apply to areas identified as Intensive Agriculture on the General Plan Land Use Diagram. The 80 acre minimum shall apply to areas identified as Extensive Agriculture.

View official code

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 "to provide for the enhancement and preservation of agriculture," restricting land to livestock grazing, crop production, and compatible non-agricultural uses while prohibiting incompatible residential, commercial, industrial, and recreational uses. 6, which gives the City discretion to approve, condition, or deny based on site circumstances. Seasonal on-site produce sales are Permitted outright (Note 2). 3) sets dimensional standards: new AG subdivisions need a minimum lot of 20 or 40 acres in areas the General Plan designates Intensive Agriculture, or 80 acres in Extensive Agriculture areas.

Front and street-side setbacks run 25 feet; the interior side/rear setback jumps to 25 feet plus 1 additional foot for every foot of building height over 35 feet when the AG parcel abuts a residential zone. Maximum building height is 50 feet, raisable only with a Conditional Use Permit (Note 6). Where an AG parcel touches Jameson Canyon, American Canyon, Green Valley, Suisun, Ledgewood, Dan Wilson, or Laural Creek, Note 5 requires dedicating a stream environment zone up to 200 feet wide to the City under the Creekside Protection provisions, directly affecting Fairfield's Green Valley and Suisun Marsh-edge parcels.

Utility buildings of 500 square feet or less are exempt from the minimum lot, landscape, and setback standards (Note 4), with requirements set by the City case by case.

Violations & Fines

Fairfield enforces zoning through its general penalty at Municipal Code Section 1.7: a first violation of any code or ordinance provision is an infraction with a fine up to $100. A second or later violation within one year can be prosecuted as an infraction with a fine up to $250, or charged as a misdemeanor carrying a fine up to $1,000, up to six months in county jail, or both. The District Attorney or City Prosecutor handles prosecution. Building or using AG-zoned land for a Conditional use, such as an animal stable or agricultural processing operation, without the required Conditional Use Permit under Section 25.40.6 is a zoning violation subject to this penalty structure independent of any building-permit fines.

Frequently Asked Questions

What zoning district protects farmland in Fairfield, CA?
The AG (Agriculture) District under Zoning Ordinance Section 25.26.1 is set aside to preserve agriculture. It restricts land to livestock grazing, crop production, and compatible non-agricultural uses, and expressly prohibits incompatible residential, commercial, industrial, and recreational development on AG-zoned parcels.
Can I keep livestock or run a farm stand in Fairfield's AG zone?
Grazing and seasonal sale of on-site-grown produce are Permitted outright under Table 25-13. Animal stables, agricultural processing, aquaculture, mining, plant nurseries, and commercial wells are Conditional uses needing a Conditional Use Permit reviewed under Section 25.40.6.
What is the minimum lot size to split agricultural land in Fairfield?
New AG subdivisions need 20 or 40 acres per lot in areas the General Plan designates Intensive Agriculture, or 80 acres in Extensive Agriculture areas, per Table 25-14 and its Note 1 under Zoning Ordinance Section 25.26.3.
Do creek-adjacent farm parcels near Green Valley or Suisun face extra rules?
Yes. Note 5 to Table 25-14 requires dedicating a stream environment zone up to 200 feet wide to the City along Jameson Canyon, American Canyon, Green Valley, Suisun, Ledgewood, Dan Wilson, or Laural Creek under the Creekside Protection provisions before development proceeds.

Sources & Official References

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