Check Site Plan Requirements for Your Texas Project
A site plan coordinates layout, grading, parking, circulation, ADA access, utilities, and impervious cover on one drawing set. Texas cities and counties review site plans against their own zoning, access, and drainage rules before issuing a building permit. ALFAP TX identifies which site-plan elements may be relevant to your project and proposed work so you can prepare the right engineering documents for the reviewing authority.
Preliminary guidance only. ALFAP TX is an informational screening tool. Results are not an official agency determination, FEMA determination, permitting authority confirmation, survey, legal opinion, engineering opinion, inspection, signed or sealed engineering report, or guarantee of approval. Requirements must be confirmed with the applicable authority and, when appropriate, a licensed Professional Engineer.
What this check reviews
Likely site-plan scope
Whether site layout, grading, parking, utilities, ADA, or impervious-cover calculations appear relevant to the proposed work.
Reviewing authority
The probable city or county that reviews the site plan, labeled as likely until confirmed with the agency.
Related engineering documents
Grading and drainage plans, utility design, and stormwater documents that may accompany the site plan submittal.
Understanding your result
Site plan may be required
Commercial development, multifamily, and many residential projects require a reviewed site plan before a building permit. ALFAP TX flags this as preliminary; the authority confirms the required scope.
Impervious cover and parking
Many jurisdictions limit impervious cover and set parking ratios. These affect what can be built and may require drainage mitigation. A civil engineer prepares the calculations.
ADA and access
Accessible routes, parking, and access can be part of site-plan review. ALFAP TX notes when these may apply; the authority and an engineer confirm the requirements.
When you may need an engineer
- Your project needs a site plan for a commercial, multifamily, or residential permit submittal.
- You need grading, drainage, or utility plans coordinated with the site layout.
- Impervious-cover or parking calculations are required by the reviewing authority.
- You want a zoning or site-feasibility review before committing to a design.
Frequently asked questions
What does a Texas site plan include?
A site plan typically shows the property boundary, building footprint, parking and circulation, access, grading, utilities, impervious cover, and stormwater elements. The exact contents depend on the jurisdiction and project scope. ALFA Engineering prepares site plans for qualifying residential and commercial projects after reviewing the project scope.
When does a Texas project require a site plan?
Commercial development, multifamily, and many residential projects require a reviewed site plan before a building permit. New construction, additions that change footprint, and changes of use commonly trigger site-plan review. Confirm the requirement with the reviewing authority for your specific scope.
What is impervious cover and why does it matter?
Impervious cover is the portion of the lot covered by surfaces that do not absorb water — buildings, parking, drives, walks. Many jurisdictions limit impervious cover and require drainage mitigation when it increases. A civil engineer prepares the calculations; the authority sets the limits.
Can ALFAP TX prepare my site plan?
No. ALFAP TX is a preliminary screening tool that identifies which site-plan elements may be relevant. The site plan itself is prepared by a Texas civil engineer. ALFAP TX helps you understand the likely scope before you engage an engineer.
Other ALFAP TX preliminary checks
Related Alfa Engineering services
When your result suggests engineering may be relevant, these Alfa Engineering services may apply. A Texas-licensed Professional Engineer confirms the actual scope for your project.