Texas ADA Ramp Requirements: Slope, Landings, and TDLR Registration

Texas ADA ramp requirements come from the Texas Accessibility Standards, a set of design rules enforced by the Texas Department of Licensing and Regulation that track the federal ADA and add a few state-specific twists. Any ramp on a building open to the public has to meet TAS for slope, width, landings, surface, and handrails. If the total estimated construction cost of the project is $50,000 or more, you also have to register the project with TDLR, have a Registered Accessibility Specialist review the plans, and pass an on-site inspection after the work is done.¹

The reach of the statute is broad. Government-owned or leased buildings, privately funded public accommodations like restaurants, hotels, stores, and medical offices, and privately funded commercial facilities all fall inside Chapter 469 of the Texas Government Code.² Projects under $50,000 still have to comply with TAS; they just move through a lighter registration process with the same $175 filing fee.³

Slope, Width, and Surface

The number everyone starts with is slope. The maximum running slope for a ramp is 1:12: one inch of vertical rise for every twelve inches of horizontal run.⁴ A 30-inch rise needs at least 30 feet of ramp, before you add landings. Cross slope, the side-to-side tilt of the ramp surface, cannot exceed 1:48, or roughly two percent. Cross slope is one of the most common inspection failures because even a slightly off-kilter concrete pour can push a wheelchair sideways.

No single run can rise more than 30 inches before a level landing breaks the climb. There is no cap on the number of runs, so a tall elevation change simply means more switchbacks.

Width is where Texas parts company with the federal standard. The clear width between handrails has to be at least 36 inches. But any ramp run longer than 30 feet must be at least 44 inches wide between handrails under TAS.⁵ Contractors who design to the federal 36-inch minimum on a long run will fail a Texas inspection.

Ramp surfaces must be firm, stable, and slip-resistant. Both sides of every run and landing need edge protection so a wheel cannot roll off; a curb or barrier used for edge protection has to keep a four-inch sphere from passing through.

Landings

Level landings are required at the top and bottom of every ramp run. Each landing has to be at least as wide as the ramp and at least 60 inches long, which gives a wheelchair user room to stop, rest, or turn around.⁴ Nothing on the landing surface can slope more than 1:48, but landings still have to shed water, so the drainage slope has to stay inside that limit.

Where a ramp changes direction at a switchback or dogleg, the intermediate landing has to be at least 60 by 60 inches so a wheelchair has room to pivot.

Handrails

Handrails are required on both sides of any ramp run with a vertical rise greater than six inches. The top of the gripping surface sits between 34 and 38 inches above the ramp. A circular gripping surface has to be between 1¼ and 2 inches in diameter, with at least 1½ inches of clearance behind the rail.⁶ Non-circular profiles are allowed, but they have to fit a similar graspable envelope.

At the top and bottom of each run, handrails must extend horizontally at least 12 inches past where the slope begins or ends.⁴ The end of every extension has to return to a wall, guard, or the landing surface so clothing and bags cannot catch. Abrupt terminations are not acceptable.

Curb Ramps and Detectable Warnings

Curb ramps follow the same 1:12 slope ceiling and slip-resistance rules, and they add one more thing: a detectable warning surface. Those are the raised truncated-dome panels installed at the bottom of the ramp to alert people with visual impairments that they are stepping into a street. The domes have to extend at least two feet in the direction of travel, span the full width of the ramp run, and contrast visually with the surrounding surface.⁷ If you are renovating a commercial storefront or parking lot, the curb ramp that connects your property to the public sidewalk is part of the accessible route and has to comply.

Where Texas Is Stricter Than the Federal ADA

TAS closely follows the federal ADA, but a design that passes ADA can still fail Texas. The differences that most often affect ramp work:

The 44-inch minimum width for runs longer than 30 feet, compared to the federal 36 inches.⁵
When you alter a building’s primary function area, TAS specifically requires that parking serving that area be made accessible, which the federal standards do not spell out the same way.
A cost-based disproportionality argument requires a formal variance application through TDLR under state law, not a judgment call by the owner.

Design to whichever standard is stricter on each dimension, and let the RAS flag anything you missed.

Registering the Project With TDLR

Registration runs through the Texas Architectural Barriers System, an online portal called TABS. Before you file, line up a Registered Accessibility Specialist; you enter the RAS’s license number during registration.

You will need the property’s physical address, the estimated construction cost, and owner information that has to match the Central Appraisal District record exactly. LLCs, LPs, and LLPs may also have to upload Texas Secretary of State records. At the end you pay the $175 filing fee and TABS issues a project number that you hand to the local permitting authority.³ Filing late pushes the fee to $300.

Once the project is registered, the design professional has to deliver the construction documents and a Proof of Submission form to the RAS no later than 20 days after the plans are issued.⁸ Weekends and legal holidays do not count in the 20 days. The RAS reviews the plans against TAS, and after construction finishes, the RAS conducts an on-site inspection before the first anniversary of the recorded project completion date. RAS fees for plan review and inspection are set by the specialist, not TDLR, so get a quote before you commit.

If the Ramp Fails Inspection

First-pass inspections turn up violations often. When they do, the building owner has 30 days from the inspection date to give written verification that corrections are underway, and 270 calendar days to finish all fixes.⁹ Missing the 270-day window requires a TDLR-approved extension. Unresolved violations go to TDLR’s enforcement division.

Some sites cannot be brought fully into compliance because of grade, historic-structure constraints, or utility conflicts. In those cases you can apply for a technical infeasibility variance. Each application takes a separate $175 fee, a written explanation, and supporting documentation like site and grading plans and photographs.¹⁰ The project has to already be registered in TABS. TDLR will not grant a variance based on cost for new construction; cost arguments only work on alterations of existing buildings.

Penalties for Non-Compliance

Under Section 469.058 of the Texas Government Code, the building owner is on the hook for any violation, and each day the violation goes uncorrected counts as a separate offense.¹¹ TDLR sorts violations into two classes:

Class A: $500 to $3,000 for a first offense, $1,500 to $4,000 for a second, and $2,500 to $5,000 for a third.¹²
Class B: $1,000 to $3,000 for a first offense, $2,000 to $4,000 for a second, and $4,000 to $5,000 for a third.¹²

These are administrative penalties, imposed by TDLR without a court proceeding, and they add up fast when a violation sits open.

Federal ADA enforcement runs on a separate track. Private plaintiffs can sue under Title III for injunctive relief and attorney’s fees, though not monetary damages.¹³ When the Department of Justice brings its own action, courts can impose civil penalties up to $118,225 for a first violation and $236,451 for later ones, as adjusted through July 2025.¹⁴

Federal Tax Incentives

Two federal provisions can offset the cost of an accessible ramp. The Disabled Access Credit under Section 44 of the Internal Revenue Code gives eligible small businesses a credit equal to 50 percent of qualifying expenditures between $250 and $10,250, for a maximum credit of $5,000 a year.¹⁵ To qualify, the business must have had gross receipts of $1 million or less, or no more than 30 full-time employees, in the prior tax year. The credit covers barrier removal and other ADA compliance costs, but not new construction; it only applies to modifications of existing facilities.

Section 190 lets any business, regardless of size, deduct up to $15,000 per year in architectural barrier removal expenses.¹⁶ A small business that qualifies for both can take the Section 44 credit on the first $10,250 of spending and the Section 190 deduction on costs above that, up to the $15,000 cap. Neither is automatic; you have to elect the treatment on your return.

1
State of Texas. Texas Government Code 469.101 – Submission for Review and Approval Required
2
State of Texas. Texas Government Code 469.003 – Applicability of Standards
3
Texas Department of Licensing and Regulation. Architectural Barriers Fee Schedule
4
U.S. Access Board. Guide to the ADA Accessibility Standards – Chapter 4: Ramps and Curb Ramps
5
Texas Department of Licensing and Regulation. TAS ADA-ABA Comparison
6
U.S. Access Board. Guide to the ADA Accessibility Standards – Chapter 5: Stairways
7
U.S. Access Board. Chapter R3: Technical Requirements
8
Texas Department of Licensing & Regulation. Proof of Submission
9
Texas Department of Licensing and Regulation. Inspection Response Form
10
Texas Department of Licensing and Regulation. Variance Application Instructions
11
State of Texas. Texas Government Code 469.058 – Administrative Penalty
12
Texas Department of Licensing and Regulation. Architectural Barriers Penalties and Sanctions
13
Office of the Law Revision Counsel. 42 USC 12188 – Enforcement
14
eCFR. 28 CFR Part 85 – Civil Monetary Penalties Inflation Adjustment
15
Office of the Law Revision Counsel. 26 U.S. Code 44 – Expenditures to Provide Access to Disabled Individuals
16
Office of the Law Revision Counsel. 26 U.S. Code 190 – Expenditures to Remove Architectural and Transportation Barriers to the Handicapped and Elderly