Accessory Structures in Bowling Green, KY: What Residents Actually Need to Know

If you live in Bowling Green or are thinking about moving there, accessory structures are one of those things you probably won't think about until they affect you directly. Bowling Green has 5 specific rules on the books covering different aspects of accessory structures, and some of them might surprise you.

Shed Rules

Bowling Green Building Division does not require a residential building permit for a detached storage shed, playhouse, or similar accessory structure under 200 square feet unless electrical service is added. Under Joint Zoning Ord. § 4.4.5.E, all accessory structures must sit behind the front facade of the principal dwelling and meet the accessory structure setback for the zone (typically 5 feet from side and rear lot lines).

Key details: Permit-Exempt Size: Under 200 sq ft (residential, no electrical). Permit Required At: 200 sq ft or larger, or any electrical added. Side/Rear Setback (RS-1): 5 feet. Front Facade Rule: Must be behind principal structure front facade. Height Cap: Cannot exceed principal structure (city limits).

Building without a required permit triggers a Building Division stop-work order and double permit fees. Yard/dimensional violations under Bowling Green Code Enforcement Board Sec. 7.2.2: $50 first / $200 second / $300 additional offenses per day.

If you are coming from a city with tighter rules, you will find Bowling Green gives residents more flexibility on shed rules.

ADU Rules

Bowling Green allows 'Accessory Apartments' in the RR, R-E, RS-1A, RS-1B, RS-1C, and RS-1D zones under Joint Zoning Ord. § 4.4.5.E(5), but with three significant local restrictions: occupancy is limited to family members of the principal residence (plus one caretaker), the owner must occupy the primary residence, and floor area is capped at 50 percent of the principal structure. Kentucky has no statewide ADU mandate.

Key details: Code Section: Joint Zoning Ord. § 4.4.5.E(5). Allowed Zones: RR, R-E, RS-1A, RS-1B, RS-1C, RS-1D. Max Size: 50% of principal structure floor area. Max Bedrooms: 2. Owner-Occupancy: Required (principal residence).

Use violation fines under Bowling Green Code Enforcement Board Sec. 7.2.2: $100 first / $200 second / $300 additional offenses. Building without permits adds Yard/Dimensional fines ($50/$100/$200) and a stop-work order from Building Division (270-393-3615).

This is one of the stricter rules in Bowling Green's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Garage Conversions

Converting a garage into habitable space in Bowling Green requires a building permit and electrical permit from the Building Division because it is a change of occupancy under the Kentucky Residential Code. If the conversion creates a second dwelling unit it must meet the Accessory Apartment rules in Joint Zoning Ord. § 4.4.5.E(5) — family-member occupancy only, max 50% of principal floor area, owner must occupy main house.

Key details: Building Permit: Required (change of occupancy). Electrical Permit: Required for any added wiring. Building Code: Kentucky Residential Code (815 KAR 7:125). Accessory Apartment Trigger: Cooking facilities + separate entrance. Family-Only Occupancy: Required if treated as Accessory Apartment.

Building without permits triggers a Building Division stop-work order and double permit fees. Use violation fines for unpermitted accessory dwelling: Bowling Green Code Enforcement Board Sec. 7.2.2 — $100 first / $200 second / $300 additional offenses per day.

Tiny Homes

A tiny home on a permanent foundation in Bowling Green is treated as either a single-family dwelling or an Accessory Apartment and must meet the Kentucky Residential Code (815 KAR 7:125) and the Joint Zoning Ordinance. Tiny homes on wheels (RVs, trailers, park-model RVs) are expressly prohibited as residences in residential zones under Joint Zoning Ord. § 4.4.5.E(4).

Key details: Building Code: Kentucky Residential Code — 815 KAR 7:125. Tiny Home as Principal Dwelling: Permitted on permanent foundation if zone standards met. Tiny Home as Accessory Apartment: Permitted in RR/R-E/RS-1 (family occupancy only, ≤50%). Tiny Home on Wheels (RV/trailer): Prohibited as residence (§ 4.4.5.E(4)). Min RS-1A Lot Area: 12,000 sq ft.

Living in an RV-classified tiny home in a residential zone is a use violation under Bowling Green Code Enforcement Board Sec. 7.2.2: $100 first / $200 second / $300 additional offenses per day, plus an order to vacate. Site-built tiny homes built without permits trigger a Building Division stop-work order.

Carport Rules

Detached carports in Bowling Green are accessory structures regulated by Joint Zoning Ord. § 4.4.5.E. A residential building permit is required from the Building Division for any carport 200 sq ft or larger. Carports must sit behind the front facade of the principal dwelling and meet the accessory structure setback (5 feet from side and rear lot lines in RS-1 zones).

Key details: Permit Threshold: 200 sq ft (residential). Side/Rear Setback (RS-1): 5 ft (detached accessory). Location: Behind front facade of principal building. Front-Yard Carport: Prohibited (detached). Enclosing into Garage: New building permit required.

Yard/dimensional violations under Bowling Green Code Enforcement Board Sec. 7.2.2: $50 first / $200 second / $300 additional offenses per day. Building without a required permit triggers a stop-work order and double permit fees.

The rules around carport rules in Bowling Green lean permissive, but that does not mean anything goes.

The Bottom Line

Compared to many U.S. cities, Bowling Green gives residents more room on accessory structures. 2 of the 5 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

This guide is based on Bowling Green's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.