Arlington's Accessory Structures: The Rules That Matter

Every city handles accessory structures a little differently. In Arlington, Texas, there are 9 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Carport Rules

Carports in Arlington require building permits and must meet setback, height, and lot coverage rules in the Unified Development Code. Attached carports follow main-structure setbacks, while detached carports follow accessory structure rules. Fabric or metal 'portable' carports are generally not allowed as permanent front-yard structures.

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Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact [Arlington code enforcement](https://www.arlingtontx.gov/city_hall/departments/community_development_and_planning) directly for current fines, enforcement procedures, and hearing options.

Tiny Homes

Arlington regulates tiny homes based on whether they are built on permanent foundations as single-family dwellings or on wheels as RVs. Foundation-built tiny homes must meet the full International Residential Code and minimum dwelling size standards, while tiny homes on wheels are treated as recreational vehicles and cannot be used as permanent residences in residential zones.

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Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact [Arlington code enforcement](https://www.arlingtontx.gov/city_hall/departments/planning_and_development_services) directly for current fines, enforcement procedures, and hearing options.

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

ADU Rules

Arlington allows accessory dwelling units in limited residential zoning districts subject to Unified Development Code standards covering size, owner-occupancy, setbacks, and parking. Unlike California or Oregon, Texas has no statewide ADU mandate, so Arlington's local zoning controls whether, where, and how an ADU can be built.

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Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact [Arlington code enforcement](https://www.arlingtontx.gov/city_hall/departments/planning_and_development_services) directly for current fines, enforcement procedures, and hearing options.

This is not one of those rules that cities tend to ignore. Arlington actively enforces its adu rules requirements.

Shed Rules

Arlington requires building permits for storage sheds and accessory buildings larger than 200 square feet, while smaller sheds are exempt from permits but must still meet setback, height, and zoning standards. All sheds must be placed in side or rear yards and typically kept 3 feet from property lines.

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Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact [Arlington code enforcement](https://www.arlingtontx.gov/city_hall/departments/community_development_and_planning) directly for current fines, enforcement procedures, and hearing options.

Garage Conversions

Converting a garage into living space in Arlington requires a building permit, full compliance with the International Residential Code for habitable rooms, and replacement of required off-street parking. Conversions that create a second dwelling unit must also meet ADU zoning standards and are often restricted by HOA covenants.

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Specific penalty amounts for this ordinance are not published in a publicly accessible fine schedule. Contact [Arlington code enforcement](https://www.arlingtontx.gov/city_hall/departments/community_development_and_planning) directly for current fines, enforcement procedures, and hearing options.

Compared to other cities, Arlington takes a harder line on garage conversions. The enforcement and penalty structure reflects that.

ADU Rental Restrictions

Arlington ADUs may be rented long-term (30+ days) provided owner occupancy continues under the typical SUP condition. Short-term rentals (under 30 days) are heavily restricted under Arlington City Code Chapter 7.5 (the 2019 STR ordinance), with single-family districts limited to one designated STR per block face and registration required. ADUs operated as STRs face strict registration, parking, and notification rules.

Key details: Long-Term (30+ days): Permitted with owner occupancy. STR Code: Arlington City Code Ch. 7.5. STR Registration Fee: $350 annual. Block Face Limit: 1 STR per block face (R districts). Hotel Tax: 9% on stays < 30 days.

Operating an unregistered STR carries fines up to $500 per day under Texas Local Government Code § 54.001 and is a Class C misdemeanor. Arlington contracts with Granicus to monitor Airbnb/VRBO listings. STRs near AT&T Stadium and Globe Life Field receive heightened enforcement attention.

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

ADU Impact Fees

Arlington charges standard water/sewer impact fees on ADUs requiring new connections under Arlington City Code Chapter 35. Roadway impact fees under Chapter 35.5 may apply for new dwelling units. Building permit fees through the OneStart portal are based on construction valuation. Texas has no statewide ADU fee waiver. Sharing the principal dwelling's utilities is the most common cost-reduction strategy.

Key details: Permit Fee Range: $500–$1,200 typical. Water Impact Fee: ~$2,500–$4,500 (new tap). Wastewater Impact: ~$2,000–$3,500. Roadway Impact: $1,000–$3,000 may apply. State Waiver: None — Texas has no ADU exemption.

Failure to pay impact fees results in permit denial or revocation. Building or occupying an ADU on an unauthorized connection is a building code violation. Texas Local Government Code § 54.001 authorizes civil penalties up to $500 per day for zoning violations and $2,000 per day for building/fire violations.

ADU Owner Occupancy

Arlington typically imposes owner-occupancy as a condition of the Specific Use Permit granted for accessory living quarters under UDC Article 4. The owner must occupy either the principal dwelling or the ADU as a permanent residence. A recorded deed restriction with the Tarrant County Clerk is generally required. Texas has not preempted local owner-occupancy rules.

Key details: Code Section: Arlington UDC Art. 4 (SUP). Owner Occupancy: Required (typical SUP condition). Deed Restriction: Recorded with Tarrant County. Both Units Rented: Prohibited (single-family district).

Operating an ADU without satisfying owner occupancy is a code violation. The city may revoke the SUP and Certificate of Occupancy and refer the matter to Municipal Court. Fines up to $500 per day apply under Texas Local Government Code § 54.001. Both units rented to non-owners can trigger a stop-use order.

This is not one of those rules that cities tend to ignore. Arlington actively enforces its adu owner occupancy requirements.

ADU Permits

Arlington allows accessory dwelling units only in limited residential districts under the Arlington Unified Development Code (UDC) Article 4. Detached ADUs (called 'guest quarters' or 'accessory living quarters') typically require a Specific Use Permit (SUP) reviewed by Planning and Zoning Commission and approved by City Council. Building permits issue only after the SUP is granted. Texas has not preempted local discretionary review.

Key details: Code Section: Arlington UDC Art. 4 & 5. Review Type: Specific Use Permit (discretionary). Timeline: 3–6 months SUP + permit. Detached Max Size: ~600 sq ft typical. Minimum Lot: ~8,000 sq ft typical.

Building an ADU without an SUP and building permit is a Class C misdemeanor under Arlington City Code with fines up to $2,000 per day for building/fire code violations and $500 per day for zoning violations under Texas Local Government Code § 54.001. The city can order removal and place a lien for abatement costs.

This is not one of those rules that cities tend to ignore. Arlington actively enforces its adu permits requirements.

The Bottom Line

Arlington is tougher than many cities when it comes to accessory structures. Out of the 9 rules covered here, 6 are rated strict. If you are a homeowner, renter, or business owner in Arlington, take the time to understand these requirements before they become a problem. Most violations come with fines, and some repeat violations can escalate.

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