Building Setbacks & Zoning in Martin County, FL (2026)
3 rules for unincorporated Martin County, Florida.
Verified from official government sources
Setback Rules
LDR Section 3.16 requires every structure to sit back from lot lines at least as far as Table 3.12.2 specifies for its zoning district, with the front setback applying to every side of a lot touching a street. A standard RS-3 single-family lot needs a 25-foot front setback and 10-foot side and rear setbacks.
Martin County Yard Setback Minimums by Zone
Some RestrictionsMartin County LDR § 3.16 (Setbacks); Table 3.12.2
3.16.A.General requirements.1.Structures shall be set back from lot lines at least as far as the distance indicated in Table 3.12.2.2.The front setback as shown in Table 3.12.2 shall apply to all sides of a lot which are adjacent to a street. However, where the lot was lawfully established prior to May 9, 1967, and is 75 feet or less in width, as measured along the front lot line, or which is o...
Structure Height Limits
Habitable buildings in unincorporated Martin County are capped at four stories or the height set for the zoning district in LDR Table 3.12.1, whichever is lower, under LDR Section 3.14. Standard single-family lots zoned RS-3 top out at 30 feet, RS-6 through RS-10 and multifamily districts reach 40 feet, and General Commercial parcels cap at 40 feet.
Martin County Building Height Limits by Zoning District
Some RestrictionsMartin County LDR § 3.14 (Height standards); Table 3.12.1
3.14.A.The maximum height of habitable buildings and structures shall be four stories or as specifically set forth in each zoning district in Table 3.12.1 or elsewhere in the LDR, whichever is lower. For purposes of this section, building height means the vertical distance between (1) the lowest permissible elevation above the existing grade which complies with finished floor elevation requirem...
Lot Coverage Limits
Martin County caps building coverage district by district in Table 3.12.1 of Land Development Regulations Section 3.12. GC and HI allow the most at 60 percent, LC, CC, WRC and WGC allow 50, CO and LI allow 40, R-1 and R-1A allow 35, and RS-BR3 allows 30. Many other residential districts print a dash and are held in check by a minimum open space percentage instead.
Martin County Building Coverage Limits by Zoning District
Some RestrictionsMartin County LDR § 3.12, Table 3.12.1 (Development Standards)
The land development standards set forth in Tables 3.12.1 and 3.12.2 shall apply to all lands zoned in accordance with this Division. TABLE 3.12.1 DEVELOPMENT STANDARDS C A T Zoning District Min. Lot Area (sq. ft.) Min. Lot Width (ft) Max. Res. Density (upa) Max. Hotel Density (upa) Max. Building Coverage (%) Max. Height (ft)/(stories) Min. Open Space (%) Other Req. (footnote) ... A RS-BR3 10,0...
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