A — Agricultural
Minimum required lot area in A is 2 ½ acres (§06.02). Minimum lot width at the building line is 150 ft. Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
Lot size and width in Gallatin, TN
What the Gallatin zoning ordinance says about lot size and width, district by district. Section numbers link to the official ordinance.
R-40 — Low Density Residential
Minimum required lot area in R-40 is 40,000 sq ft (§06.03). Minimum lot width at the building line is 120 ft. Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
R-20 — Low Density Residential
Minimum required lot area in R-20 is 20,000 sq ft (§06.04). Minimum lot width at the building line is 100 ft. No dwelling unit is allowed on less than 15,000 sq ft of development area per dwelling unit (§06.04.030). Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
R-15 — Low/Medium Density Residential
Minimum required lot area in R-15 is 15,000 sq ft (§06.05). Minimum lot width at the building line is 75 ft. Development area per dwelling unit must be at least 11,250 sq ft (§06.05.030). Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
R-10 — Medium Density Residential
Minimum required lot area in R-10 is 10,000 sq ft (§06.06). Minimum lot width at the building line is 60 ft. Development area per dwelling unit must be at least 7,500 sq ft (§06.06.030). Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
R-08 — Medium Density Residential
Minimum required lot area in R-08 is 8,000 sq ft (one-family detached) (§06.07). Minimum lot width at the building line is 55 ft. Development area per dwelling unit must be at least 7,000 sq ft; maximum overall site density is 5.5 units per gross acre (§06.07.030). Townhouse lots sold individually: 5,000 sq ft minimum, 20 ft wide, max 6 attached units, 6,500 sq ft site area per unit (§06.07.062). Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
R-06 — High Density Residential
Minimum required lot area in R-06 is 6,000 sq ft (one-family detached) (§06.08). Minimum lot width at the building line is 45 ft. Development area per dwelling unit must be at least 2,200 sq ft; maximum overall site density is 15.0 units per gross acre (§06.08.030). Townhouse lots sold individually: 1,500 sq ft minimum, 20 ft wide, max 8 attached units per structure (§06.08.062). Corner-lot, planned-development (PRD), and subdivision conditions can add requirements.
CC — Core Commercial
No minimum lot size in CC except residential activities, which need 3,000 sq ft (upper-story residential excluded). Dwelling units require 2,000 sq ft of development area per unit, except upper-story units, which instead need a minimum floor area of 500 sq ft (§08.01.030.C).
CG — Commercial General
Article 8 states no general minimum lot area for CG (§08.03.030 covers yards); lot dimensions are governed by yard, parking, access, and site-plan requirements. Confirm site-specific requirements with Planning.
CS — Commercial Services
Article 8 states no general minimum lot area for CS (§08.02.030 covers yards); lot dimensions are governed by yard, parking, access, and site-plan requirements. Confirm site-specific requirements with Planning.
CSL — Commercial Services Limited
Minimum lot area in CSL is 20,000 sq ft (§08.08.030.A).
OR — Office Residential
OR residential: minimum lot area 8,000 sq ft, lot width 60 ft, site area per unit 3,000 sq ft (§07.08.020). Non-residential: minimum site size 5 acres (entire development), minimum lot area 20,000 sq ft (§07.08.030).
MRO — Multiple Residential and Office
MRO residential: minimum lot area 6,000 sq ft, lot width 60 ft, site area per unit 3,000 sq ft (§07.02.020). Non-residential: minimum lot area 20,000 sq ft (§07.02.030).
MPO — Medical-Professional Office
Minimum lot area in MPO is 20,000 sq ft (§07.06.030.A).
MU — Mixed Use
MU minimum site size is 5 acres for the entire development (residential and non-residential). Residential: site area per unit 3,000 sq ft, minimum lot width 60 ft, and minimum lot area printed as 60,000 sq ft (§07.03.020). *[Flag 2026-07-03: 60,000 verified against the page image; it sits oddly beside the 3,000 sq ft per-unit figure; confirm intent with Planning.]* Non-residential minimum lot area is 20,000 sq ft (§07.03.30).
MUG — Mixed Use General
Minimum lot area in MUG is 20,000 sq ft (§07.04.030.A); minimum development area per dwelling unit is 2,000 sq ft (§07.04.020.C).
PNC — Planned Neighborhood Commercial
PNC minimums (§08.05.040.B): site size 1 acre (entire development), lot area 20,000 sq ft within the development, lot width 80 ft.
PGC — Planned General Commercial
PGC minimums (§08.04.040.B): site size 1 acre (entire development), lot area 20,000 sq ft within the development, lot width 100 ft.
PBP — Planned Business Park
PBP requires 10 contiguous acres under common ownership for the district and 3 acres for each individual lot or building site (§09.04.A).
IR — Industrial Restrictive
IR has no fixed minimum lot area: sites must be sized so structures have “architectural unity and flexibility in arrangements” and meet all space requirements (§09.02.030.A). Yards, parking, loading, and buffering effectively size the lot.
IG — Industrial General
IG has no fixed minimum lot area in §09.03.030; yards, parking, loading, access, and buffering requirements effectively size the lot. Confirm site-specific requirements with Planning.
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