Before You Build in Lexington, KY: Permit & Rule Checklist (2026)

Lexington enforces the Kentucky Building Code and 2018 ISPSC through the LFUCG Division of Building Inspection. Residential swimming pools over 24 inches deep must have a 48-inch minimum barrier, self-closing self-latching gates, and power-safety covers on spas.

LFUCG generally does not require a building permit for residential fences under 6 feet tall on private property, but zoning compliance review is required to confirm height, setback, and sight distance rules. Fences taller than 6 feet, pool fences, and fences in historic overlay districts trigger additional permits and review.

In Lexington, retaining walls over 4 feet in height (measured from the bottom of the footing) require a building permit and engineered plans under the Kentucky Residential Code. Walls supporting a surcharge such as a driveway or pool require engineering at any height, and walls near property lines must comply with drainage and easement rules.

Under the Lexington Zoning Ordinance (Chapter 14A), residential fences in rear and side yards may reach up to 8 feet in height, while front-yard fences are typically limited to 4 feet and must meet sight-distance requirements at driveways and intersections. Commercial and industrial zones allow taller fences subject to design standards.

Kentucky has no residential Good Neighbor Fence Act. KRS §256.010 covers agricultural partition fences only. Boundary disputes resolved through common law.

Lexington hot tubs fall under Kentucky Residential Code R326. A locking ASTM F1346 safety cover may replace the 48-inch barrier. VGB Act drain rules apply.

Above-ground pools in Lexington need a building permit and the same 48-inch barrier as in-ground pools. Ladders must be secured or removed when not in use.

Lexington requires a building permit from the Division of Building Inspection for all swimming pools. Plans must show layout, barrier design, setbacks, and electrical work.

Lexington enforces pool barriers at least 48 inches tall under the Kentucky Residential Code. Gates must be self-closing and self-latching with 4-inch ground clearance maximum.

Public and commercial swimming pools in Lexington-Fayette Urban County must comply with Kentucky Administrative Regulations 902 KAR 10:120 (Public Swimming and Bathing Facility Operations) and Lexington-Fayette County Health Department (LFCHD) Board of Health Regulation No. 31. LFCHD inspects all 322 public pools and spas in Fayette County, requires at least one Certified Pool Operator (CPO) on duty during operating hours, and enforces the 2023 lifeguard staffing rule of one lifeguard per 2,000 sq ft of water surface.

Lexington-Fayette Urban County Government permits one accessory dwelling unit per lot on single-family residential properties under Zoning Ordinance Section 3-12. ADUs are capped at 800 square feet with an owner-occupancy requirement for either the primary dwelling or the ADU.

Converting a garage to living space in Lexington requires a building permit and must meet Kentucky Residential Code standards. Garage-to-ADU conversions are one of four permitted ADU types under Zoning Ordinance Section 3-12, subject to the 800 sq ft maximum and owner-occupancy rules.

Carports in Lexington are regulated by the Lexington-Fayette Urban County Government (LFUCG) Zoning Ordinance as accessory structures. Attached carports count as part of the primary dwelling and must meet principal building setbacks, while detached carports follow accessory structure setbacks (typically 3 feet from side and rear lot lines in most residential zones). Building permits are required for any carport with a permanent foundation or attached to the dwelling, and structures must comply with the Kentucky Residential Code for wind and snow loads.

Lexington allows tiny homes on permanent foundations as primary dwellings if they meet the Kentucky Residential Code minimum of 120 square feet for the first habitable room and comply with LFUCG zoning minimum dwelling size requirements. Tiny homes on wheels (THOWs) are classified as recreational vehicles under Kentucky law and cannot be used as permanent residences on residential lots. Accessory dwelling units (ADUs) are permitted in limited circumstances on larger lots, and all tiny homes require standard building permits, plumbing connections, and zoning approval.

Sheds in Lexington are regulated as accessory buildings under Zoning Ordinance Section 15-6. Total accessory building area cannot exceed 50 percent of the primary dwelling footprint or 625 square feet, whichever is greater. Maximum height is 20 feet at mid-gable.

Lexington-Fayette prohibits open burning of trash and yard waste in most of the urban service area and restricts agricultural and brush burning to specific conditions. Kentucky Division of Forestry fire hazard seasons (February 15 to April 30 and October 1 to December 15) further restrict burning within 150 feet of woodland between 6 AM and 6 PM.

Lexington allows recreational fire pits under Kentucky Fire Code conditions. Clearance from structures required. Gas pits have fewer restrictions.

Tree removal in LFUCG right-of-way requires Urban Forester approval. Removing trees on private property is generally allowed without a permit, though subdivision regulations, historic districts, and conservation easements on horse-farm land may restrict removal.

Kentucky American Water supplies most of Lexington and does not impose routine outdoor watering restrictions. KRS 151.200 governs state water withdrawals. Voluntary conservation is encouraged during drought, and LFUCG can declare mandatory restrictions during emergencies.

LFUCG Division of Environmental Services and the Urban Forester regulate trimming of street trees and trees in public right-of-way. Property owners may trim trees on their own land but need a permit to prune or remove trees in the right-of-way or on LFUCG property.