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Boise, ID Right to Farm: Agricultural Zoning Protection (2026)

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

Key Facts

District
A-1 Open Land: Very Low Density
Minimum lot area
1 acre
Maximum density
1 unit per acre
Front/street side setback
20 ft.
Interior side / rear setback
10 ft. / 30 ft.
Max building height
45 ft. (35 ft. if abutting residential)
Excluded from ag definition
Hogs, slaughterhouses, fertilizer works, feedlots

Summary

Boise reserves farming and ranching for its A-1 Open Land district, a very low density zone with a one acre minimum lot and one unit per acre density cap. The Development Code names agriculture as a purpose of A-1 land alongside parks, schools and golf courses, and defines what counts as an agricultural use.

A. Purpose: The A-1 zoning district is intended to provide for low density residential use and land uses requiring larger land areas for development such as parks, schools, golf courses, agriculture... TABLE 11-02.33: A-1 LOT AND BUILDING STANDARDS LOT STANDARDS Lot area (minimum) 1 acre Lot width (average) 50 ft. Street frontage (minimum) 30 ft. Density (maximum) 1 unit/acre BUILDING SETBACKS (MINIMUM) [1] A Front 20 ft. Street Side 20 ft. B Interior Side 10 ft. C Rear Yard 30 ft. ... HEIGHT (MAXIMUM) D Building Height 45 ft. or 35 ft. [1] Notes: [1] Applies when the property abuts a Residential zoning district or a residential use. ... AGRICULTURAL USES OR STABLES: Tilling of soil, aquaculture, raising crops, livestock, farming, dairying, and animal husbandry including all customarily accessory and incidental uses, but excluding hogs, slaughterhouses, fertilizer works, bone yards, and commercial feed lots; or a building or structure used or designed for the boarding or care of riding horses.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-31: Code current through: Ord. 20-26, passed 6-9-2026).

Full Breakdown

Boise City Code Section 11-02-05 creates the A-1 Open Land: Very Low Density district specifically to hold farmland and other large-lot uses inside city limits. 33 sets the dimensional envelope that makes working land viable: minimum lot area of one acre, average lot width of 50 feet, minimum street frontage of 30 feet, and a maximum density of one dwelling unit per acre. Building setbacks are a 20 foot front yard, 20 foot street side yard, 10 foot interior side yard and 30 foot rear yard, with parking setbacks running slightly larger on the rear (30 feet) and against Interstate 84 or 184 (also 30 feet).

Maximum building height is 45 feet, dropping to 35 feet where the A-1 lot abuts a residential zoning district or residential use. Boise City Code Section 11-06-03 separately defines "Agricultural Uses or Stables" as the tilling of soil, aquaculture, raising crops, livestock, farming, dairying, and animal husbandry, including customarily accessory and incidental uses, and it folds in boarding or care of riding horses under the same definition. That same definition draws the line on what is not protected as ordinary agriculture within the city: hogs, slaughterhouses, fertilizer works, bone yards, and commercial feedlots are carved out of the definition entirely, so those uses cannot rely on A-1's agricultural purpose and instead need their own zoning review.

1, the Table of Allowed Uses, cross-references use-specific standards in Chapter 11-03 for related categories such as accessory livestock and animals, beekeeping, and urban farms, which are regulated as distinct uses layered on top of, not substituting for, the A-1 agricultural purpose.

Violations & Fines

Operating a use excluded from the Section 11-06-03 definition, such as a commercial feedlot, slaughterhouse or hog operation, on A-1 land without the applicable conditional use or rezone approval is a Development Code violation subject to enforcement by Boise Planning and Development Services. Building in the setbacks listed in Table 11-02.33 or exceeding the 45 foot (or 35 foot, if abutting a residential zone) height cap without an approved variance is likewise a code violation requiring correction before occupancy or continued use.

Frequently Asked Questions

Which Boise zoning district protects farming?
The A-1 Open Land: Very Low Density district under Boise City Code Section 11-02-05. Its stated purpose includes agriculture alongside parks, schools and golf courses, and it carries a one acre minimum lot size built around large-parcel uses rather than typical residential development.
What counts as an agricultural use in Boise's code?
Section 11-06-03 defines Agricultural Uses or Stables as tilling soil, aquaculture, raising crops, livestock, farming, dairying and animal husbandry, plus customarily accessory uses, and buildings for boarding or caring for riding horses, but it excludes hogs, slaughterhouses, fertilizer works, bone yards and commercial feedlots.
Can I build a barn close to my A-1 property line?
No. Table 11-02.33 sets a 20 foot front and street side setback, a 10 foot interior side setback and a 30 foot rear setback for A-1 buildings, and separate, slightly larger parking setbacks, including 30 feet along Interstate 84 or 184.
How tall can a building be on A-1 land?
Up to 45 feet under Table 11-02.33, but the cap drops to 35 feet wherever the A-1 parcel abuts a residential zoning district or an existing residential use, per the table's footnote.

Sources & Official References

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