Austin construction projects involve development rules, permits, zoning, drainage, and, for some residential projects, HOME and ADU requirements.

A site plan gives the reviewing department a clear picture of the property and proposed work. Austin Development Services describes it as a detailed drawing showing buildings, landscaping, parking, driveways, detention ponds, and utility improvements.

Site Plans TX prepares permit-oriented site plans for Austin properties. Whether you are planning a home, addition, ADU, residential development, or commercial improvement, the drawing should reflect the actual property and project scope.

What Does Site Plan for Permit in Austin Show?

An Austin site plan shows how existing and proposed improvements relate to the property. Depending on the project, the plan may show:

Property boundaries and dimensions
Existing and proposed buildings
Setbacks and easements
Streets, driveways, and parking
Utilities
Landscaping and trees
Drainage and floodplain information
Finished floor elevations
Construction limits
Sidewalks and access
Building area, unit count, coverage, and height

Austin’s requirements also identify legal descriptions, location maps, utilities, easements, and sealed plans for applicable submissions.

Austin Development Services and Land Development Code

Austin Development Services administers the city’s development review process. The city states that site plan requirements and approval procedures are defined in Volume III, Chapter 25 of the Land Development Code.

For applicable site plan applications, Austin uses a completeness check followed by formal review. Applicants use the AB+C Portal and submit the required application and supporting documents.

A generic site plan may not be enough because requirements depend on what you are building, where the property is located, and which review standards apply.

Austin Zoning, Setbacks, and Property Rules

Austin uses zoning districts and development standards that can affect the placement and size of a proposed improvement.

A site plan may need to show zoning districts, adjoining land uses, nearby buildings, setbacks, building placement, parking, and other site improvements. Austin can also require data covering floor area ratio, impervious cover, building coverage, unit count, building height, gross floor area, and open space.

The structure should be positioned using actual property information. Easements, rights-of-way, and floodplain limits can affect construction.

HOME Initiative and Austin Residential Development

Austin’s HOME amendments are especially important for residential projects. The City of Austin describes HOME as “Home Options for Mobility and Equity.” The amendments provide more housing choices in single-family zoned areas. HOME Phase 1 allows up to three housing units on qualifying SF-1, SF-2, and SF-3 properties.

HOME Phase 2 created a small-lot single-family residential use for qualifying lots of at least 1,800 square feet but less than 5,750 square feet. Existing qualifying small lots can use HOME Phase 2 through the building permit process, while new smaller lots generally involve subdivision or residential infill requirements.

If your project involves multiple units, a small lot, or residential infill, the applicable HOME pathway should be considered before drafting.

ADU and Additional Dwelling Unit Site Plans

Austin homeowners frequently ask whether an additional dwelling unit can be added to an existing property. The city defines an ADU as a separate dwelling unit on the same property as a single-family home. An ADU must meet applicable zoning, utility, internal access, occupancy, address, fire separation, and other requirements.

Austin’s current ADU guidance identifies a standard pathway that can include SF-1, SF-2, or SF-3 zoning and a minimum lot area of 5,750 square feet or greater. Unit sizing, addressing, and other development regulations also apply. Deed restrictions can affect an ADU.

Because HOME changed how certain two-unit and three-unit projects are regulated, an ADU should be evaluated based on the actual property and proposed configuration. A site plan can show the existing home, proposed ADU, setbacks, access, utilities, and parking.

Austin Site Plan Requirements

Depending on the project, Austin plans may identify:

Legal description and property boundaries
Existing utilities and utility crossings
Easements and setbacks
Existing and proposed structures
Parking and vehicle-use areas
Building dimensions
Finished floor elevations
Floodplains and drainage features
Construction limits
Sidewalks and access routes
Landscaping and tree protection
Watershed information
Impervious cover and building coverage
Unit count, floor area, height, and stories
Required project notes and signatures

Austin also requires tree information for certain projects, including a tree survey for qualifying trees within or touching the limits of construction and a tree protection plan under applicable code. Environmental requirements can apply to properties involving the Edwards Aquifer Recharge Zone, Critical Water Quality Zones, significant slopes, or certain wetland features.

Floodplain, Drainage, and Environmental Considerations

Austin site plan review can involve drainage and environmental requirements in addition to zoning. The city coordinates review with Austin Water, Austin Fire, and Austin Watershed Protection. Reviews can cover drainage, floodplain, water quality, transportation, environmental review, and tree protection.

If a floodplain is present, the plan may need FEMA floodplain information, finished floor elevations, drainage easements, and other required data. Accurate property information is important before drafting begins.

Residential Site Plans in Austin

Residential projects can range from a simple addition to a multi-unit development. Common projects include:

New homes and additions
Detached garages and accessory structures
ADUs
Duplexes and three-unit projects
Small-lot residential projects
Residential infill projects

Not every residential project follows the same site plan process. Certain HOME-related projects use residential plan review or streamlined pathways, and qualifying three- and four-unit projects may not require a full site plan submission. The process depends on the number of units, zoning, configuration, and location.

Commercial Site Plans in Austin

Commercial projects generally involve more extensive site information. Depending on the project, a commercial site plan may address parking, loading, access, sidewalks, landscaping, utilities, drainage, building placement, fire access, and other development standards.

Austin’s requirements can also involve Transportation Impact Analysis, water benchmarking, environmental review, and engineering documentation. If your project is commercial, provide the property address and proposed use before drafting.

Austin Site Plan Process

Step 1: Send Your Property Information

Start with the Austin property address and describe what you plan to build or change. Provide your survey, plat, existing drawings, project dimensions, or other documents you already have.

Step 2: Confirm the Review Path

We review the property and project scope to identify whether the work follows a residential, commercial, ADU, HOME, or other applicable pathway.

Step 3: Prepare the Site Plan

Our team prepares the drawing using the available property information and applicable project requirements.

Step 4: Review and Revise

You review the drawing and provide clarification if needed before final delivery.

Step 5: Submit for the Applicable Permit

The finalized plan can be submitted with the applicable Austin permit or development application, subject to city requirements.

For full site plan applications, Austin’s process includes a completeness check followed by formal review.

What Can Delay an Austin Site Plan?

Common causes of delay include:

Missing or outdated survey information
Incorrect property boundaries
Unclear project dimensions
Missing easements or setback conflicts
Floodplain, drainage, or tree issues
Environmental review requirements
Parking or access issues
Changes after drafting begins
Missing professional engineering information

Providing complete information at the beginning helps reduce unnecessary revisions.

Why Choose Site Plans TX?

Site Plans TX focuses on clear, permit-oriented drawings prepared around the actual property and project scope. Our service can support:

Austin residential site plans
ADU site plans
HOME-related residential projects
Small-lot projects
Residential additions
Commercial site plans
Permit-oriented drafting
Covered correction revisions
Fast turnaround options

We understand that Austin projects can involve zoning, HOME regulations, ADU requirements, drainage, trees, environmental rules, and transportation considerations. Our goal is to prepare the agreed plan around your project information.

Need an Austin Site Plan?

If you are preparing a permit application in Austin, start with the property address and project details. Tell us what you plan to build, add, or change, and send the documents you already have. We can help determine the information needed to prepare the site plan for your project.

Whether you are building an addition, ADU, small-lot home, multi-unit project, or commercial improvement, a clear site plan can make the proposed work easier to review.

Get a Free Quote

Email: drafting@siteplanstx.com
Call/WhatsApp: +1 (385) 885-5362

Frequently Asked Questions

Do I need a site plan for an Austin permit?

It depends on the project. Austin requires site plans for applicable development and non-residential site work, while some residential projects qualify for different review pathways or exemptions.

What should an Austin site plan show?

Depending on the project, it can show property boundaries, buildings, setbacks, easements, parking, utilities, drainage, floodplain information, landscaping, trees, access, and project data.

Can I build an ADU in Austin?

An ADU may be possible if the property meets applicable requirements. Austin identifies zoning, lot area, unit size, addressing, fire separation, and other requirements, while deed restrictions can also affect the project.

Does HOME change Austin residential permits?

Yes. HOME amendments changed development opportunities for certain two-unit and three-unit residential projects and created small-lot single-family provisions. The applicable process depends on the property and project.

Does every Austin project require a full site plan?

No. Certain residential projects and HOME-related configurations may use residential plan review, exemptions, or streamlined processes instead of a full site plan.

Can Site Plans TX guarantee Austin permit approval?

No. The final decision belongs to the City of Austin and other applicable reviewing authorities. We prepare the agreed drawing based on the project information provided and can address covered drafting corrections.

Start Your Austin Site Plan

Austin’s development process can involve more than drawing a proposed building. Zoning, HOME regulations, ADU requirements, drainage, environmental conditions, trees, access, and utilities can affect the information needed.

A property-specific site plan gives the reviewing department a clear picture of the existing site and proposed improvements. Site Plans TX can help turn your property information into a clear, permit-oriented site plan for Austin.

Site Plan for a Permit in Austin, Texas