How Hendersonville Handles Accessory Structures: A Practical Guide
Hendersonville maintains 111 local ordinances across all categories, and 4 of those deal specifically with accessory structures. Here is a breakdown of what the city actually requires, what is prohibited, and where Hendersonville falls on the strict-to-permissive spectrum compared to other cities.
ADU Owner Occupancy
Hendersonville requires the property owner to actually live in the principal home or the accessory unit at least 75 percent of the year to keep an ADU legal.
Key details: Residency threshold: 75% of the year minimum. Who must reside: At least one property owner. Where: Principal dwelling or accessory unit.
An owner who stops living on the property, or occupies it less than 75% of the year, is no longer in compliance with Section 10.4.2.1(B) and risks losing the accessory unit's permitted status.
ADU Rental Restrictions
Hendersonville will not let an accessory apartment or detached accessory dwelling become a market rental. Zoning Ordinance Section 10.4.2.1.C confines occupancy of the second unit to relatives of the people in the main house, plus one owner who must live on the property at least 75 percent of the year under Section 10.4.2.1.B.
Key details: Eligible occupants: Only family relations or domestic employee. Owner residency requirement: 75% of year, per §10.4.2.1.B. Effect: Bars market/short-term rental use. Enforcement tool: Recorded covenant, runs with land. Inspection authority: Periodic compliance checks, §10.4.2.3.H.
Occupying an accessory apartment or dwelling with anyone outside the relationships listed in Section 10.4.2.1.C, or without an owner meeting the 75 percent residency rule in Section 10.4.2.1.B, breaches the recorded covenant and the Zoning Ordinance itself. Under Section 4.13, any Ordinance violation is a misdemeanor carrying a $50.00 fine, with additional daily penalties as provided by law and each day of continued noncompliance charged as a separate offense.
This is one of the stricter rules in Hendersonville's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
ADU Rules
Hendersonville allows one accessory apartment or detached accessory dwelling on a single-family lot under Zoning Ordinance Section 10.4.2.1, but only under tight conditions. The lot, principal dwelling, and accessory unit must stay under single ownership, share one water meter, one gas meter, and one driveway, and the owner must record a covenant with the Sumner County Register of Deeds binding every future owner to the same terms.
Key details: Min. lot size (detached ADU): 30,000 sq ft, no variance. Detached ADU setback: 20 ft side/rear, no variance. Attached apartment size cap: 40% of combined floor area. Off-street parking required: 4 spaces; garage doesn't count. Detached ADU approval: Conditional Use Permit, BZA.
Building or occupying an accessory apartment or dwelling without the required Zoning Permit, or breaking the ownership, parking, meter, or covenant conditions of Section 10.4.2.1, is a zoning violation. Under Zoning Ordinance Section 4.13, any violation of the Ordinance is a misdemeanor punishable by a $50.00 fine, with additional daily penalties allowed by law and each day of continued violation treated as a separate offense.
This is one of the stricter rules in Hendersonville's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.
Shed & Carport Rules
Hendersonville allows detached sheds under 400 square feet to sit as close as 5 feet from rear and side lot lines if set back 10 feet from the house, with size caps up to 3,000 square feet by lot size.
Key details: Setback to encroach: 10 feet from principal building. Max encroaching size: 400 square feet. Closest to lot line: 5 feet, interior lots. Max detached buildings: two per residential lot. Size cap: 1,000 to 3,000 sq ft by lot size.
Building a shed over 400 square feet within 5 feet of a lot line, exceeding two detached accessory buildings, or exceeding the size or height caps without a variance violates Chapter 10.4.1.
The Bottom Line
Hendersonville is tougher than many cities when it comes to accessory structures. Out of the 4 rules covered here, 2 are rated strict. If you are a homeowner, renter, or business owner in Hendersonville, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.
Keep in mind that Hendersonville can amend these rules at any council meeting. For the most current version of any rule mentioned here, check the specific ordinance page, where we track updates as they happen.