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Travis County, TX Fence Regulations: Retaining Walls (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Engineer seal trigger
Retaining wall over 5 feet in height
Applies to
Non-residential, multi-family, or subdivision sites
General cut/fill cap
8 vertical feet maximum
Slope restriction
No cut/fill on slopes over 15% without BMPs
Waterway buffer
No cut/fill within 100 ft of a 64+ acre waterway
Civil penalty
Up to $1,000 per day per violation

Summary

A Travis County retaining wall taller than 5 feet must be designed and sealed by a Texas-licensed professional engineer before the county will issue a development permit for non-residential site development, a multi-family project, or a subdivision. The rule sits inside the county's cut-and-fill land balancing standards.

City-specific rules exist: Austin, and Pflugerville have their own retaining walls rules that differ from Travis County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

A retaining wall over five feet in height shall be detailed in the construction plans sealed by a Texas licensed professional engineer and submitted with the development permit application for a non-residential site development, multi-family dwelling, or subdivision. Cut and fill located on a slope with a gradient of more than 15 percent is prohibited unless the design includes appropriate BMPs to prevent erosion, including diversion of surface water runoff; use of terraces; soil retention blankets, mulch, riprap or structural containment; establishment of mixed vegetation (such as forbs, shrubs, trees); or similar controls. Cut and fill may not be located within 100 feet of the centerline of a waterway with 64 or more acres of drainage. Every cut and fill proposal must be designed so that it complies with the requirement in Chapter 464 of the Code that floodplain storage must not be reduced. The design and structural integrity of fill areas associated with residential lot construction must be consistent with the U.S. Department of Housing and Urban Development guidelines established in Data Sheet 79g entitled “Land Development with Controlled Earthwork” (1973). The County Executive may require that a proposal for fill for a residential construction project that includes critical site improvements as defined in section 482.936(c)(1) include design plans and specifications prepared and sealed by a Texas-licensed professional engineer.

Full Breakdown

Travis County Code Sec. 943(a) governs cut-and-fill land balancing on any site that requires a development permit or engineered construction plans. Subsection (a)(1) caps ordinary cut-and-fill grading at a maximum of eight vertical feet, whether that is excavated cut, placed fill, or a combination of the two. Subsection (a)(3) then singles out retaining structures: a retaining wall over five feet in height must be detailed in the construction plans, and those plans must be sealed by a Texas-licensed professional engineer and submitted with the development permit application, specifically for a non-residential site development, a multi-family dwelling, or a subdivision.

Cut and fill on a slope steeper than 15 percent is separately prohibited under (a)(4) unless the design includes erosion controls such as terracing, soil retention blankets, or mixed vegetation, and no cut or fill may sit within 100 feet of the centerline of a waterway draining 64 or more acres under (a)(5). Every proposal must also comply with the no-net-loss-of-floodplain-storage requirement of Chapter 464 under (a)(6). Subsection (b) allows the County Executive to approve an exception to the eight-foot cut-and-fill cap where the applicant demonstrates the standard height is not feasible for the site, provided the request includes substantial permanent stabilization measures, and the cap does not apply at all to permanent water quality controls, detention ponds, streets, building footprints, or driveways. All of this must be submitted alongside the SWP3 requirements of Sec. 935(c)(5) and the general submittal requirements of Sec. 931.

Violations & Fines

Retaining wall and cut-and-fill work that skips the required engineer's seal or exceeds the eight-foot cap without an approved exception is enforced as a storm water management violation under Sec. 482.104(b). Travis County may pursue a civil penalty of up to $1,000 per day the violation continues, sue to enjoin the work, and recover the cost of abating or remediating any resulting erosion or drainage damage, plus its attorney fees and court costs.

Frequently Asked Questions

Does my retaining wall need an engineer's stamp in Travis County?
Only if it exceeds 5 feet in height and the project is a non-residential site development, multi-family dwelling, or subdivision; Sec. 482.943(a)(3) requires the construction plans be sealed by a Texas-licensed professional engineer and filed with the development permit application.
How tall can I cut or fill my lot without extra approval?
Sec. 482.943(a)(1) caps ordinary cut-and-fill land balancing at eight vertical feet total, combining excavation and placed fill, unless the County Executive grants an exception under subsection (b) for infeasibility.
Can I build a taller wall near a creek?
Not within 100 feet of the centerline of a waterway draining 64 or more acres; Sec. 482.943(a)(5) bars cut-and-fill activity there regardless of wall height, and slopes over 15% require erosion-control measures under (a)(4).
What if my project needs fill higher than the standard limit?
Sec. 482.943(b) lets the County Executive approve an exception to the eight-foot maximum if you show the standard height is not feasible for the site, but the request must include substantial permanent erosion and sediment stabilization measures.

Sources & Official References

Other rules in Travis County

All Travis County rules

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