Dallas, TX Accessory Structures: Shed & Carport Rules (2026)
Shed permit rules in Dallas, TX, also referred to as storage shed, backyard shed, or accessory building regulations, set size limits, setbacks, and when a building permit is required.
Key Facts
- Height limit
- Cannot exceed the main building's height
- Single structure floor area cap
- 25% of main building floor area
- Combined structures floor area cap
- 50% of main building floor area
- Design-match exemption
- Structures 200 sq ft or less exempt
- Governing section
- Dallas Development Code Sec. 51A-4.209(b)(6)(E)(vii)
Summary
Dallas caps backyard sheds and other accessory structures at the height of the main house and limits their floor area under Development Code Sec. 51A-4.209(b)(6)(E)(vii). One shed cannot exceed 25% of the house's floor area, and all accessory structures combined cap out at 50%.
Accessory structures. Except in the agricultural district, accessory structures are subject to the following regulations: ... (cc) The height of an accessory structure may not exceed the height of the main building. (dd) The floor area of any individual accessory structure on a lot, excluding floor area used for parking, may not exceed 25 percent of the floor area of the main building. (ee) The total floor area of all accessory structures on a lot, excluding floor area used for parking, may not exceed 50 percent of the floor area of the main building. (ff) Accessory structures must have a roof-pitch and fenestration compatible with the main building. It is recommended that accessory structures have exterior siding, roofing, and foundation fascia compatible with the main building. ... This provision does not apply to accessory structures with a floor area of 200 square feet or less.
Full Breakdown
Chapter 51A of the Dallas City Code regulates accessory structures, sheds, detached garages, workshops, and similar buildings, as part of the single-family use standards in Sec. 209(b)(6)(E)(vii). Outside the agricultural district, every accessory structure on a single-family lot must follow four numeric standards. First, height: an accessory structure may not exceed the height of the main building on the lot, so a shed cannot be taller than the house it sits behind. Second, individual floor area: no single accessory structure, excluding any floor area used for parking, may exceed 25 percent of the main building's floor area.
Third, aggregate floor area: the combined floor area of every accessory structure on the lot, again excluding parking area, cannot exceed 50 percent of the main building's floor area, so a homeowner cannot get around the 25 percent cap by building several smaller sheds. Fourth, design compatibility: accessory structures must have a roof pitch and fenestration compatible with the main building, and the code recommends matching exterior siding, roofing, and foundation fascia as well; the property owner carries the burden of proving compatibility if challenged, though using similar materials or quality helps meet that burden.
The code carves out one exception to the design-compatibility rule: it does not apply to accessory structures with a floor area of 200 square feet or less, meaning small storage sheds are exempt from the matching-materials requirement even though they still must meet the height and floor-area percentage limits. The section also separately restricts renting an accessory structure or advertising one for rent, a distinct issue from the size standards covered here. Because this provision sits inside the zoning-based Development Code rather than the building code, the building official and Board of Adjustment (not a separate shed-specific department) are the enforcement points, and a compatibility dispute can be appealed to the Board of Adjustment.
Violations & Fines
A shed or accessory structure that exceeds the main building's height, or that pushes individual or combined accessory floor area past the 25%/50% caps, is a zoning code violation subject to a stop-work order or removal requirement through the city's code compliance process. Compatibility disputes over exterior materials on structures larger than 200 square feet can be appealed to the Board of Adjustment, which weighs the property owner's proof of compatibility.
Frequently Asked Questions
How tall can a shed be in Dallas?
Is there a size limit on a Dallas backyard shed?
Does a small shed need to match the house's siding and roofing?
Sources & Official References
Other rules in Dallas
How Dallas compares: Shed Permit Requirements by City·Texas rules heatmap·Compare Dallas to another location·View the Texas accessory structures overview
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Shed & Carport Rules in Nearby Cities
How other cities in Dallas County handle shed & carport rules.