Before You Build in Flower Mound, TX: Permit & Rule Checklist (2026)

Flower Mound requires a fence permit for all new fencing and most work on existing fences. Replacing fence pickets with the same material, size, and height does not require a permit. Replacing posts or rails, changing height, or moving a fence requires a permit from Building Inspections.

Flower Mound requires a building permit for any retaining wall over 4 feet tall including footing depth. Walls exceeding 4 feet must be designed by a licensed professional engineer. Retaining walls under 4 feet do not need a permit but cannot be built in easements or block drainage.

Flower Mound requires pool barriers of at least 48 inches in height under the adopted International Swimming Pool and Spa Code (ISPSC) and International Residential Code (IRC). Gates must be self-closing and self-latching. During construction, a temporary 48-inch fence must surround the pool area until the permanent barrier is installed.

TX Property Code Ch. 26 governs boundary fence disputes statewide. Cost-sharing for shared fences is customary but not legally mandated. Flower Mound does not require neighbor notification before building a fence. Most HOA CC&Rs contain provisions governing shared fence responsibilities and architectural approval.

Flower Mound Sec. 98-1142 (Ch. 98 Zoning, Div. 7 Fences and Walls) limits front yard fences to 4 feet in non-agricultural districts. Agricultural district front yards allow barbed wire or livestock fencing up to 5 feet. Side and rear yard fences may not exceed 8 feet above adjacent grade.

Building permit required for all pool, spa, and hot tub construction. Must comply with ISPSC. Barriers minimum 48 inches, non-climbable, with self-closing self-latching gates.

Flower Mound enforces pool safety standards through the adopted International Swimming Pool and Spa Code and Texas Health and Safety Code Chapter 757. Residential pools require VGB Act-compliant drain covers, GFCI protection for electrical equipment within 20 feet, and building inspection before use. Private residential pools are not subject to routine public health inspections.

Flower Mound enforces pool barrier fencing under the adopted International Residential Code and Texas Health and Safety Code Chapter 757. All residential pools must have a barrier at least 48 inches high with self-closing, self-latching gates. Chain-link fencing is prohibited for new pool enclosures, and most HOAs require wrought-iron style barriers.

Hot tubs and spas in Flower Mound are regulated under the adopted International Swimming Pool and Spa Code and Texas Health and Safety Code Chapter 757. Units capable of holding water 18 inches or deeper require barrier fencing and a building permit. Hardwired electrical spas require GFCI protection and a dedicated circuit inspected by the Building Department.

Flower Mound regulates above-ground pools under the same building code and barrier requirements as in-ground pools. Pools capable of holding water 18 inches or deeper require a building permit, compliant fencing, and final inspection. Many Flower Mound HOAs prohibit above-ground pools entirely through CC&R architectural standards.

Flower Mound Chapter 98 Zoning governs accessory dwelling units and guest quarters. Single-family residential zoning districts may allow guest quarters as an accessory use under specific conditions, but independent rental of ADUs as separate dwelling units is generally not permitted. Texas has no statewide ADU mandate, and local zoning controls remain in effect.

Garage conversions in Flower Mound require a building permit and must maintain the minimum number of off-street parking spaces required by Chapter 98 Zoning for the applicable residential district. HOAs in most master-planned communities prohibit garage conversions through CC&R provisions. Converting a garage to a habitable living space requires compliance with adopted building codes for insulation, egress, electrical, and ventilation.

Flower Mound does not have a specific tiny home ordinance. Tiny homes on foundations must meet all International Residential Code minimum standards for dwelling units including minimum room sizes, ceiling heights, and utility connections. Tiny homes on wheels are classified as recreational vehicles and cannot serve as permanent residences in residential zoning districts under Chapter 98 Zoning.

Flower Mound Chapter 98 Zoning regulates carports as accessory structures. Carports must comply with setback, height, and design compatibility requirements. Most master-planned community HOAs prohibit freestanding carports entirely through CC&R architectural standards, requiring enclosed garage parking instead. A building permit is required for carport construction.

Flower Mound Chapter 98 Zoning requires sheds and storage buildings to be architecturally compatible with the primary structure and comply with setback requirements for the applicable zoning district. A building permit is required for most shed sizes. HOAs in master-planned communities frequently prohibit visible storage sheds or impose strict material and design standards.

Flower Mound Ch. 38 Fire Prevention and Protection prohibits open burning within town limits under the adopted 2024 International Fire Code. Trench burns are not allowed anywhere in the town. Incinerator fires require a minimum two-acre lot and a 20-foot setback from structures, with a spark arrestor in place at all times.

Flower Mound permits gas and propane fire pits with enclosed flames in residential backyards. Wood-burning open fires and bonfires are prohibited within town limits under the adopted International Fire Code. Portable charcoal and gas cooking grills are permitted year-round for cooking purposes.

Tree removal permit required for protected trees above 6-inch caliper. Mitigation via replacement planting or fund payment is mandatory. Cross Timbers oaks receive highest protection.

Permanent twice-per-week watering schedule by address (odd/even). No irrigation 10 AM-6 PM April-October. Drought stages escalate to total outdoor water bans. Fines up to $2,000.

Protected Cross Timbers trees (post oak, blackjack oak, cedar elm) require a permit before significant pruning. Routine dead-wood removal is allowed without a permit.