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San Antonio, TX Right to Farm: Agricultural Zoning Protection (2026)

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

Key Facts

Minimum lot size
25 acres
Multi-family use
Not permitted in FR district
ADDUs allowed
Up to 2 per property
ADDU size range
300 to 1,200 sq ft
Accessory structures
5,000 sq ft per 25 acres
Density bonus
2 units/acre with 75% conservation easement
Zoning violation fine
$100 to $2,000 per day

Summary

San Antonio's Unified Development Code sets aside an FR Farm and Ranch zoning district to preserve rural, agricultural land with a 25-acre minimum lot size and by prohibiting incompatible land uses. The district allows farming, ranching, and limited accessory dwellings while barring multi-family development outright.

Purpose. The farm and ranch district "FR" is intended to preserve rural character and culture by implementing larger minimum lot sizes and by prohibiting incompatible land uses. The "FR" district provides areas for agricultural operations and natural resource industries. These districts are composed primarily of large tracts of land that are vacant or in agricultural uses and may contain a minimal number of dwellings and accessory structures. ... Multi-Family Residential Uses. Multi-family (apartment) dwelling units are not permitted in the "FR" district. ... All lots shall comply with the provisions of Table 310-1. The minimum lot size shall be twenty-five (25) acres.

Full Breakdown

Sec. 17 establishes the FR Farm and Ranch District to preserve rural character by implementing larger minimum lot sizes and prohibiting incompatible land uses. Lots in the district must be at least twenty-five (25) acres under Table 310-1, and multi-family apartment dwelling units are not permitted anywhere in the district. Single-family residential uses are allowed, and each FR property may add up to two accessory detached dwelling units (ADDUs) of 300 to 1,200 square feet each, capped at three bedrooms, with no owner-occupancy requirement for either the main house or the ADDU.

Beyond ADDUs, an FR property may build up to 5,000 square feet of other accessory structures for every 25 acres it holds. Owners who place a property into a conservation subdivision can earn a density bonus: if at least 75 percent of the tract sits in a conservation easement for agricultural land, ranch land, or open space, the remaining acreage may be developed at up to two units per acre, compared with the four units a standard 100-acre FR lot would otherwise allow. Ag Commercial uses listed in Table 311-2a are permitted subject to the FR Ag Commercial dimension standards in Table 310-1, and small-scale village center or minor node commercial nodes may locate near major thoroughfare intersections, capped at 6,000 square feet per building with no drive-through windows allowed.

The purpose section ties the district to master plan policies on distributing land uses, protecting natural resources, and preserving rural character, and the district may buffer low-intensity uses along streams, floodplains, and similar environmentally sensitive areas. Lots follow article V design standards with FR-specific exceptions for blocks, streets, sidewalks, and parking, and agricultural-related uses are exempt from parking and loading requirements.

Violations & Fines

FR district requirements sit in Article III of the Unified Development Code, so violations are prosecuted under the UDC's general zoning penalty at Sec. 35-491(c)(2): a Class C misdemeanor fine of $100 to $2,000, rising to a $200 minimum on a second conviction and a $300 minimum for a third and every conviction after that. Each day a violation continues is a separate offense, and the city may also seek a civil penalty of up to $1,000 per day in addition to criminal prosecution.

Frequently Asked Questions

What is the minimum lot size in San Antonio's FR district?
Twenty-five acres. Sec. 35-310.17 of the Unified Development Code requires all lots in the Farm and Ranch district to comply with Table 310-1, which sets the FR minimum lot size at 25 acres, larger than any residential district, specifically to preserve rural character and prevent incompatible land uses from moving in.
Can I build a second dwelling on FR-zoned land in San Antonio?
Yes, up to two accessory detached dwelling units (ADDUs) per property. Each ADDU must be between 300 and 1,200 square feet and no more than three bedrooms. The code does not require the owner to live in either the main house or the ADDU as a primary residence.
Are apartments allowed in San Antonio's FR zoning district?
No. Sec. 35-310.17(a)(2) states multi-family apartment dwelling units are not permitted in the FR district at all, keeping the zone limited to single-family, agricultural, and narrowly defined commercial uses like Ag Commercial parcels and small village center nodes.
How can an FR property get more housing density in San Antonio?
Through the conservation subdivision density bonus. If at least 75 percent of the property is placed in a conservation easement for agricultural land, ranch land, or open space, the remaining land can be developed at up to two dwelling units per acre, versus the standard four units allowed on a 100-acre FR tract without the bonus.

Sources & Official References

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