Texas does not have a single "site permit" a land-development team applies for. Depending on the parcel, a project can need a state stormwater permit, a local grading or land-disturbance permit, a floodplain development permit, a TxDOT access permit, water and sewer approvals from the serving utility, a subdivision plat, and — if the site touches a creek, pond, or wetland — federal review under Section 404/401. This guide walks through each layer so you can scope the permitting effort before you're deep into design.
What permits does a Texas land-development project need?
Most site-civil projects in Texas require some combination of the following: a TPDES construction stormwater permit from TCEQ, a local grading or land-disturbance permit from the city or county, a floodplain development permit if any part of the site sits in a FEMA Special Flood Hazard Area, a TxDOT driveway/access connection permit if the project fronts the state highway system, water and sewer connection approvals, and a subdivision plat if the project creates new lots. Add a Section 404/401 review if the site includes wetlands or other waters of the U.S. The table below maps each permit to its trigger and agency.
| Permit | Agency | Triggered by |
|---|---|---|
| TPDES Construction General Permit TXR150000 | TCEQ | ≥1 acre of disturbance (small: 1–<5 ac, large: ≥5 ac), or part of a larger common plan |
| Grading / land-disturbance permit | City or county public works/engineering | Any grading, clearing, or land disturbance — thresholds set locally |
| Floodplain development permit | Local floodplain administrator | Any development within a FEMA-mapped Special Flood Hazard Area |
| Driveway/access connection permit | TxDOT | Access connecting to a state highway |
| Water/sewer connection approval | City utility, MUD, or SUD | New service connections or capacity commitments |
| Subdivision plat | City or county platting authority | Creating new lots or replatting |
| Section 404 permit / Section 401 certification | USACE / TCEQ | Discharge of dredged or fill material into waters of the U.S. |
Do I need a TPDES stormwater permit in Texas?
Yes, if the project disturbs one acre or more of land, or is part of a larger common plan of development that totals an acre or more. Texas runs its own NPDES-delegated program: the TCEQ TPDES Construction General Permit TXR150000. The permit distinguishes small construction (1 to under 5 acres) from large construction (5 acres or more), and both require a site-specific SWPPP before you disturb soil. Coverage is obtained through TCEQ's STEERS ePermits system, and a low-rainfall-erosivity waiver may be available for some small sites depending on timing and location. For the full mechanics — NOI filing, SWPPP contents, inspection frequency, and NOT at final stabilization — see the TXR150000 guide.
How does floodplain development permitting work in Texas?
If any part of your site falls inside a FEMA-mapped Special Flood Hazard Area, you need a floodplain development permit from the local floodplain administrator before you can grade, fill, or build. Texas has no statewide floodplain-permitting agency — enforcement is entirely local, run by the city or county floodplain administrator under NFIP participation, with support from the Texas Water Development Board. Work located in the regulatory floodway typically requires an engineer-sealed no-rise certification demonstrating the project doesn't raise base flood elevations. Because floodplain review is jurisdiction-specific, confirm the local administrator and submittal requirements early — see the Texas floodplain development permit guide for the full process.
What about grading and land-disturbance permits at the local level?
Texas has no statewide grading permit or land-disturbance threshold — every city and county sets its own rules, and the differences matter. Houston has no zoning at all; site development runs through City of Houston Public Works and the Houston Permitting Center under Chapter 42 subdivision/development regulations, with the Harris County Flood Control District weighing in on drainage. Dallas requires a city grading permit plus paving/drainage review, evaluated against the North Central Texas Council of Governments' iSWM (integrated Stormwater Management) criteria. Austin runs land development through Site Plan review under its Land Development Code, layered with Watershed Protection rules, the Save Our Springs (SOS) ordinance, Critical Water Quality Zone restrictions, and — for sites over the Edwards Aquifer — the TCEQ Edwards Aquifer Protection Program. If your project is in one of these three metros, go straight to the metro-specific guide: Houston site development permitting, Dallas grading and drainage permitting, or Austin Site Plan permitting.
Do I need a TxDOT access permit?
Yes, if the project's driveway or access point connects to a road on the state highway system. TxDOT issues a driveway/access connection permit for any new or modified connection, and the review covers sight distance, spacing from other access points, turn-lane requirements, and drainage impacts to the state right-of-way. Local-street-only access doesn't trigger TxDOT review — that goes through the city or county instead. See the TxDOT driveway/access permit guide for submittal requirements and design standards.
What about wetlands and Section 404/401 in Texas?
If the site includes a creek, pond, wetland, or other water of the U.S., and the project will place dredged or fill material into it, you need a Section 404 permit from the U.S. Army Corps of Engineers and an accompanying Section 401 water-quality certification from TCEQ. Minimal-impact work typically qualifies for a Nationwide Permit (NWP); larger impacts require an Individual Permit (IP), which takes substantially longer and involves more agency coordination. This is one of the permits most likely to blow up a project schedule if it's discovered late — delineate wetlands and jurisdictional waters during due diligence, not after grading design is complete. For the full process, see Section 404/401 for land development and how long Section 404 permitting takes.
Do I need water, sewer, and platting approvals too?
Any project creating new lots needs a subdivision plat, approved by the city or county platting authority, and platting review typically requires preliminary engineering plans for drainage, streets, and utilities before final plat approval. Water and sewer service is provided by the city, a Municipal Utility District (MUD), or a Special Utility District (SUD) depending on location, and each requires its own capacity commitment and connection approval separate from the grading and stormwater permits. These aren't site-civil permits in the stormwater/floodplain/access sense, but they run on the same critical path and are frequently the long pole in unincorporated areas served by a MUD.
Why is Texas site-civil permitting so decentralized?
Texas deliberately keeps land-use and site-development authority at the local level rather than creating a statewide land-development code. There is no state grading permit, no state platting standard, and no statewide zoning enabling act that every city must follow — each home-rule city and county writes its own subdivision ordinance, drainage criteria manual, and permit process. The state only steps in where federal law requires delegation (TPDES stormwater under the Clean Water Act) or where a state asset is directly affected (TxDOT right-of-way access). For a multi-market civil firm, that means the permit list is stable statewide — stormwater, floodplain, access, platting, wetlands — but the agency, the submittal format, and the review timeline behind each one change at every city or county line. Treat \"Texas permitting\" as a checklist of categories to confirm locally, not a fixed statewide process.
What's the typical permitting sequence for a Texas site-civil project?
While every jurisdiction's exact order varies, most Texas land-development projects move through the same rough sequence:
- Confirm floodplain status against the FEMA FIRM and delineate any wetlands/waters of the U.S. during due diligence.
- Submit the subdivision plat (if new lots are being created) alongside preliminary drainage and utility concept plans.
- Secure the local grading/land-disturbance permit and, if applicable, the floodplain development permit.
- File the TPDES Notice of Intent and finalize the SWPPP before any soil disturbance.
- Pursue the TxDOT access permit in parallel if the site fronts a state highway.
- Coordinate Section 404/401 review in parallel from the earliest possible point if jurisdictional waters are present — it is rarely the fastest permit in the stack.
- Finalize water/sewer connection approvals as utility design is completed.
Because Texas permitting is split across state, federal, and dozens of independent local jurisdictions, the biggest scheduling risk isn't any single permit — it's sequencing them correctly against each other. A plat approved before drainage is finalized, or a TPDES NOI filed before the floodplain permit clears, creates rework. Map the full permit set against your specific site before locking a design schedule, and use the metro guides above once you know which jurisdiction you're in.
One more practical note for teams working multiple Texas metros at once: don't assume a permit set that worked in one city transfers to the next. A drainage report format accepted by Harris County Flood Control District won't automatically satisfy Austin's Watershed Protection Department, and an iSWM-compliant Dallas design isn't pre-approved under Austin's SOS ordinance or the Edwards Aquifer Protection Program. The permit categories are consistent statewide — stormwater, floodplain, access, platting, utilities, and wetlands — but the design criteria manuals behind each one are written independently by each jurisdiction. Confirm the current local criteria manual before finalizing grading and drainage design, even if your firm has built dozens of sites in a neighboring county.