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Martin County, FL Right to Farm: Agricultural Zoning Protection (2026)

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

Key Facts

A-2 minimum lot
5 acres, LDR § 3.412.B
A-1/A-1A minimum lot
2 acres each
Yard setbacks
25 ft front, rear and side in A-2
Development review
Bona fide ag use exempt, § 10.1.D.2.c
Noise exemption
Ag operations exempt from noise code, § 67.307.F

Summary

Martin County's A-2 Agricultural District, along with its A-1 and A-1A districts, sets the zoning framework that protects farming: a five-acre minimum lot in A-2, 25-foot yards, and a long list of permitted agricultural uses under LDR § 3.412. Bona fide agricultural use is also exempt from the county's development review process under § 10.1.D.2.c.

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

Sec. 3.412. - A-2 Agricultural District. 3.412.A.Uses permitted. In this district, a building or structure or land shall be used for only the following purposes, subject to any additional limitations pursuant to section 3.402:1.Any use permitted in the A-1 and A-1A Districts. ... 3.412.B.Required lot area. The required lot area shall not be less than five acres... 3.412.C.Minimum yards required.1.Front: 25 feet.2.Rear and side: 25 feet. ... Development associated with a bona fide agricultural use, as defined in F.S. § 193.461.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 62 | Land Development Regulations: Supplement 62).

Full Breakdown

The Land Development Regulations build agricultural protection into the zoning map itself rather than through a single free-standing right-to-farm ordinance. Sec. 411 creates the A-1A Agricultural District and Sec. 1 the A-1 Small Farms District, both requiring a minimum two-acre lot with 25-foot front, rear and side yards and permitting flower farms, nurseries, groves, greenhouses, truck farming, fruit growing, poultry raising and roadside produce stands. Sec. 412 creates the A-2 Agricultural District, which incorporates every use permitted in A-1 and A-1A and adds stock raising, stables, dog kennels, agricultural packinghouses and hunting camps, subject to a five-acre minimum lot area and the same 25-foot front, rear and side yard standards, plus a 50-foot setback from the center line of a non-through-traffic right-of-way and 65 feet from a designated through-traffic highway.

Beyond the zoning districts themselves, Sec. 461, from the county's site plan and development order procedures in Sec. 11, meaning a working farm does not have to run the same development review process as a subdivision or commercial project. The county's noise ordinance carries a parallel protection: Sec. F of the Code of Ordinances exempts noises incidental to the activities of bona fide agricultural operations, excepting broadcast equipment, from the countywide noise standards. Subdivision Sec. 7 adds an agricultural exception to the platting requirement, letting land be divided for bona fide agricultural use without going through subdivision plat approval as long as no parcel smaller than 20 acres is created and no new public street results.

Violations & Fines

A landowner who claims the agricultural development-review exemption in Sec. 10.1.D.2.c or the A-2 district's permitted uses for an operation that is not actually a bona fide agricultural use under F.S. § 193.461 risks a stop-work order and code compliance action for developing without the required development order or site plan approval. Using A-2 land for a nonagricultural use not listed in Sec. 3.412.A is also a zoning violation.

Frequently Asked Questions

What is the minimum lot size to farm in Martin County's A-2 district?
Five acres, under LDR § 3.412.B, with narrow historical exceptions for certain platted tracts in Palm City Farms, St. Lucie Inlet Farms and St. Lucie Gardens where a full recorded tract counts as ten acres. Front, rear and side yards in the A-2 district are each 25 feet, per Sec. 3.412.C.
Does a farm need site plan approval like other development in Martin County?
No. Sec. 10.1.D.2.c exempts development associated with a bona fide agricultural use, as defined in F.S. § 193.461, from the site plan and development order procedures in Sec. 10.2 through 10.11 of the Land Development Regulations. The farm still has to comply with the underlying zoning district's use and dimensional standards.
Is farm noise exempt from Martin County's noise ordinance?
Yes, mostly. Sec. 67.307.F of the Code of Ordinances exempts noises incidental to the activities of bona fide agricultural operations from the county's noise restrictions, though the exemption specifically excepts broadcast equipment such as bird-distress speakers, which remain subject to the general noise standards.

Sources & Official References

Other rules in Martin County

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