APEX GRIDENGINEERING · ARCHITECTURE · GC

Texas · Licensed Professional Engineering

Civil & Site Engineering in Texas

Site engineering that clears local review — grading, drainage, and utilities designed to each jurisdiction's published standards from day one.

Civil Engineering for Texas Conditions

Civil and site engineering in Texas is a drainage discipline. Houston's flat topography and repeated flood events (Harvey chief among them) mean Harris County and the City enforce demanding detention, fill-mitigation, and finished-floor elevation rules that can reshape a site plan entirely. Elsewhere, expansive clays complicate pavement and utility design, and each major city publishes its own drainage criteria manual — we design to the specific manual rather than a generic standard. Stormwater quality, TCEQ construction general permit coverage, and SWPPP documentation apply to sites over an acre statewide. Our grading, detention, and utility layouts are built around each jurisdiction's published criteria and the reality that in much of Texas, moving water off-site responsibly is the hardest part of the entitlement.

Texas Code & Design Snapshot

Building Code
Locally adopted International Building Code (editions vary; many major cities on 2021 IBC, others on 2018 or 2015)
Commercial Energy Code
2021 IECC is the state minimum for commercial construction (State Energy Conservation Office adoption); some cities lag on an older edition and a few adopt more recent versions locally
Climate Zone(s)
2A (hot-humid) across Houston/San Antonio, 3A in Dallas/Austin, 3B/4B in the west and Panhandle
Seismic
Predominantly Seismic Design Category A–B; low seismicity statewide, with modestly elevated hazard near West Texas induced-seismicity zones
Wind
Highest loads on the coast — the Gulf Coast Texas Department of Insurance windstorm (TWIA/TDI) region enforces stringent wind design at 130–150+ mph; inland speeds moderate to ~105–115 mph
Snow
Negligible ground snow loads statewide (generally 5 psf or less)

Code adoptions change on multi-year cycles and many states allow local amendments. The researched source verification date is 2026-07-28; we verify the governing edition with your permitting jurisdiction at project kickoff.

Scope of Services

Permitting & Licensure in TX

Permitting Landscape

Permitting varies dramatically by jurisdiction: Houston famously has no zoning but enforces strict floodplain and drainage criteria, while Dallas and Austin run structured plan-review with published amendment packages. Coastal counties add windstorm (TDI/TWIA) inspection and certification requirements that must be planned into the schedule.

PE Licensure — Texas Board of Professional Engineers and Land Surveyors (TBPELS)

Texas offers licensure by reciprocity for qualified out-of-state PEs and requires firms to hold a Certificate of Registration. Digital/electronic seals are accepted on submittals per board rules.

Market Context

Texas leads the nation in construction volume, driven by relentless population growth, corporate relocations to DFW and Austin, Gulf Coast petrochemical and LNG expansion, and a booming data-center and semiconductor pipeline. Warehouse/industrial and multifamily starts remain strong across the major metros.

Key markets: Houston, Dallas–Fort Worth, San Antonio, Austin, El Paso, Corpus Christi.

Texas FAQs

Is there a statewide building code in Texas?
Not for commercial construction. Texas has no mandatory statewide commercial building code — each municipality adopts its own IBC edition and amendments. Major cities range across the 2015, 2018, and 2021 IBC, so we confirm the governing edition with the permitting city at kickoff.
Which energy code applies to Texas commercial projects?
The 2021 IECC is the commercial baseline adopted statewide through the State Energy Conservation Office, with ASHRAE 90.1 as an accepted alternate compliance path. Cities enforce on their own review schedules, and Austin applies stricter local amendments, so we match COMcheck or energy-model documentation to the enforced edition.
Do I need special foundation engineering for expansive soils in Texas?
Frequently, yes. The Blackland Prairie and Gulf Coast clays are highly expansive, and foundation design must follow the project geotechnical report — commonly post-tensioned slabs, drilled piers, or grade beams on void forms with moisture-control detailing.
What are the wind design requirements on the Texas coast?
The Texas Department of Insurance windstorm region (including TWIA-served counties) enforces stringent coastal wind design, typically 130–150+ mph, with inspection and windstorm certification required. Inland projects design to more moderate speeds around 105–115 mph.

Related Services & Locations

MEP Engineering in TexasStructural Engineering in TexasEnergy Code Compliance in Texas
Civil in AlabamaCivil in ArizonaCivil in ArkansasCivil in CaliforniaCivil in ColoradoCivil in ConnecticutCivil in DelawareCivil in Florida

Start Your Texas Project

For projects whose jurisdiction, discipline, and scope pass review, an available licensed PE and coordinated team can be identified. Send us your scope for a proposal; timing and fee depend on the project.

Request a Proposal