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

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

Key Facts

District name
Agricultural Exclusive (AE)
Governing section
Zoning Ordinance § 17.08.010
By-right uses
Crop production, equestrian, grazing (A permit)
CUP-required uses
Feedlots, hog ranches, mining, oil/gas wells
Rezoning limit
Requires Board finding of no adjoining harm

Summary

Placer County's Agricultural Exclusive (AE) district, established under Zoning Ordinance § 17.08.010, restricts land to crop production, livestock and other commercial farming uses, bars incompatible development, and locks parcels into that zoning to protect surrounding agricultural operations from encroachment.

These county ordinances apply to unincorporated areas of Placer County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Purpose and Intent. The purpose of the agricultural exclusive (AE) district is to provide for the preservation and protection of important agricultural lands that are being used for the commercial production of agricultural commodities, and that constitute economic units... It is intended that the AE district shall: 1. Restrict the use of land within the AE district to crop production, the raising of livestock, poultry and other animals, and to incidental uses that are customarily and necessarily related to agricultural operations... 2. Prohibit land uses that are incompatible with commercial agricultural operations... 3. Once applied to a specific property, not be changed to another zoning classification unless the Board of Supervisors determines that such a change would not adversely affect the continuation of commercial agricultural operations on adjoining parcels and in the site vicinity.

Full Breakdown

010(A) sets the purpose of the Agricultural Exclusive (AE) district as preserving 'important agricultural lands that are being used for the commercial production of agricultural commodities, and that constitute economic units,' defined as land capable of generating enough agricultural income to cover expenses while making efficient use of required labor and equipment. The district restricts land use to crop production, the raising of livestock, poultry and other animals, and incidental uses customarily related to those agricultural operations, plus limited non-agricultural uses necessary for the health, safety and convenience of residents living or working in the rural area.

010(A)(3) locks a parcel into the AE classification once applied: the Board of Supervisors will not rezone it unless it finds the change won't adversely affect commercial agricultural operations on adjoining parcels or in the site vicinity. 010(B) permits agricultural accessory structures and crop production by right, while animal sales yards, feed lots, stockyards, and chicken, turkey and hog ranches require a conditional use permit, and mining, oil and gas wells also require CUP review. 08 gets a further layer of nuisance protection once it's been operating for more than a year.

Violations & Fines

Establishing a use not on the AE allowable-use table, or a use requiring a conditional use permit without first obtaining one, violates the zoning ordinance and is enforceable as a zoning code violation by Placer County code enforcement. Rezoning an AE parcel without the Board of Supervisors' finding that the change won't harm neighboring commercial agriculture is barred outright under § 17.08.010(A)(3).

Frequently Asked Questions

What is the Agricultural Exclusive (AE) zoning district in Placer County?
It's a zoning classification under § 17.08.010 meant to preserve commercial agricultural land, restricting parcels to crop production, livestock raising, and incidental farm uses while barring incompatible residential, commercial or industrial development. Once land is zoned AE, the Board of Supervisors won't rezone it unless a change wouldn't harm nearby farming operations.
Can I build a feedlot or hog ranch in Placer County's AE zone?
Only with a conditional use permit. Section 17.08.010(B)'s allowable-use table lists animal sales yards, feed lots, stockyards, and chicken, turkey and hog ranches as CUP uses, meaning they need discretionary planning approval rather than being allowed by right like ordinary crop production.
How does AE zoning relate to Placer County's right-to-farm protections?
They work together. Article 17.08 sets which farm uses are allowed in the AE, Farm and Forest districts, while the separate right-to-farm ordinance at § 5.24.040 protects an established commercial agricultural operation in those districts from nuisance suits once it's operated for over a year without changing its practices.

Sources & Official References

Other rules in Placer County

All Placer County rules

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