By Site Plan Creator Team • March 6, 2026

Houston Site Plan Requirements: Complete Guide for Building Permits

Creating a site plan for a building permit in Houston, Texas is unique because Houston is the largest city in the United States without a traditional zoning ordinance. Instead, development is regulated through the City of Houston Code of Ordinances, deed restrictions, and specific development standards enforced by the Houston Permitting Center (HPC).

Houston's Unique Regulatory Environment

Unlike virtually every other major US city, Houston does not use traditional zoning to separate land uses. Instead, the city relies on:

• Chapter 42 (Subdivision and Development) of the City Code — establishes lot size minimums, setback requirements, parking standards, and infrastructure requirements
• Deed restrictions — private covenants that control land use in specific neighborhoods (enforced by homeowners associations and, since 1999, by the city in some cases)
• Special minimum lot size areas — voter-approved areas with specific lot size and building standards
• Historic districts — city-designated areas with design review requirements

This means your site plan in Houston focuses primarily on Chapter 42 compliance rather than zoning compliance, but deed restrictions may impose additional requirements that should be investigated before design.

Required Site Plan Elements for Houston

The Houston Permitting Center requires the following elements on site plans:

• Property boundaries with accurate dimensions and total lot area
• Building setbacks per Chapter 42 (based on block size and lot configuration)
• Location of all existing structures with square footage and use
• Proposed construction clearly distinguished from existing structures
• Parking spaces per Chapter 26 (off-street parking requirements)
• Driveways and access points with dimensions and sight triangles
• Drainage and grading showing compliance with Chapter 9 (floodplain management)
• Tree and shrub locations for commercial and multi-family (Chapter 33 landscaping)
• Utility easements and right-of-way lines
• North arrow and scale
• HCAD (Harris County Appraisal District) account number

Houston Setback Requirements (Chapter 42)

Houston's setback requirements under Chapter 42 differ from zoning-based cities. They are based on block size and lot configuration rather than a zoning district:

• Building line: 25 feet from the front property line for residential lots on blocks over 600 feet long; 10 feet for blocks under 600 feet
• Side yard: 5 feet minimum for single-family; 10% of lot width (minimum 5 feet) for larger structures
• Rear yard: No minimum rear setback for single-family (subject to deed restrictions)
• Fire separation: 5-foot minimum between buildings on the same lot and between buildings on adjacent lots per the Fire Code
• Special minimum lot size areas: May have larger setbacks; check with HPC for your property's specific requirements

Floodplain Management Requirements

Houston's flood risk is one of the most significant development considerations in the city. Chapter 19 (Floodplain Management) and the Harris County Flood Control District regulations require:

• Floodplain determination: All permit applications must include a flood zone determination based on current FEMA maps and the city's more restrictive local maps
• Elevation requirements: New residential construction must be elevated at least 2 feet above the 500-year floodplain (one of the strictest standards in the nation, adopted after Hurricane Harvey)
• Substantial improvement rule: Improvements exceeding 50% of the structure's market value trigger full flood compliance
• Detention requirements: New development must provide stormwater detention to prevent increased flooding downstream
• No-rise certification: Development in the regulatory floodway must demonstrate zero rise in base flood elevation

Your site plan must clearly show the 100-year and 500-year floodplain boundaries, proposed finished floor elevations, and any detention facilities.

Drainage and Stormwater Requirements

Beyond floodplain management, Houston requires comprehensive drainage planning:

• Chapter 9 requires stormwater management for all development creating impervious surface
• Detention: Required for commercial projects and residential projects on lots over 15,000 sq ft that increase impervious surface by more than 1,000 sq ft
• Low Impact Development (LID): Houston encourages bioretention, rain gardens, permeable pavement, and green infrastructure through the LID Design Manual
• Harris County detention standards: Apply within the county's jurisdiction and may be more restrictive than city standards

Tree and Landscaping Requirements

Houston's tree and landscaping requirements are specified in Chapter 33 of the City Code:

• Commercial and multi-family: Required landscaping plans with minimum tree counts, screening, and buffer plantings
• Protected trees: Trees 20 inches+ in diameter on commercial/multi-family sites require mitigation if removed
• Single-family: No city tree ordinance for private residential properties (deed restrictions may apply)
• Street trees: May be required as part of subdivision or site plan approval

ADU Requirements in Houston

Houston permits Accessory Dwelling Units (ADUs) under specific conditions:

• ADUs are permitted on single-family lots meeting minimum size requirements
• Setbacks: Must comply with Chapter 42 building line and side yard requirements
• Size limits: ADUs cannot exceed the square footage of the primary dwelling
• Parking: One additional off-street parking space required
• Access: Must have street or alley access
• Deed restrictions: Many Houston neighborhoods restrict ADUs through private covenants — always check your deed restrictions before planning an ADU

How to Submit Your Site Plan

Houston Permitting Center Online

Submit through the Houston Permitting Center online portal at houstonpermittingcenter.org for electronic plan review. Create an account, upload your plans in PDF format, pay fees, and track your application status.

In-Person Submission

Walk-in service is available at 1002 Washington Avenue, Houston, TX 77002. Appointments are recommended. Over-the-counter permits are available for minor work.

Historic District Requirements

Houston has over 20 designated historic districts and numerous individual landmarks. Properties in these areas require:

• Certificate of Appropriateness from the Houston Archaeological and Historical Commission (HAHC) before permits are issued
• Review of exterior changes including demolition, new construction, additions, and significant alterations
• Protected landmarks: Individual landmarks have additional protections and a 90-day waiting period before demolition permits can be issued

Permit Fees and Timeline

• Plan review fees: Based on project valuation and square footage per HPC fee schedule
• Building permit fees: Calculated from construction valuation
• Impact fees: Water, wastewater, and drainage impact fees for new connections
• Timeline: Residential plan review 10-15 business days. Commercial 20-30 business days. Expedited residential review available for qualifying projects. Floodplain reviews may add additional time.

Creating Your Houston Site Plan with Site Plan Creator

Site Plan Creator makes it easy to generate a professional, permit-ready site plan for your Houston property. Simply enter your address, and the tool automatically loads your property boundaries, building footprints, and aerial imagery. You can then add setback lines, label structures, draw proposed construction, and export a scaled PDF ready for HPC submission.