Before You Build: Residential Permits, Plans, Inspections, and Fees in Central Texas

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Before you move a wall, add a bedroom, build a casita, or break ground on a custom home, there is one question worth answering: what approvals does this exact property and scope require?

The answer changes across Austin, Cedar Park, Leander, Georgetown, Liberty Hill, Dripping Springs, Lago Vista, and Jonestown. A permit application, a complete set of drawings, and the inspection schedule are related—but they are separate parts of getting a project built and closed out.

What changes with the job scope?

Use this table to plan the initial conversation with the permitting authority. Local exemptions and the issued permit control the final requirements.

Scope examples are synthesized from Austin’s project categories and Cedar Park’s remodel/addition checklist.^[1][5]

Architectural plans, engineering, MEPs, and shop drawings

A rendering shows the idea. Permit drawings explain what will be built, where it will sit, and how it complies. An “architectural plan set” does not automatically mean every sheet requires an architect’s seal. Required professional licenses, signatures, and seals depend on the project, applicable law, and the authority’s requirements.

Shop drawings supplement the permit set. Obtain required design-professional review and agency acceptance before fabrication or installation. A deferred submittal needs the authority’s agreement; it is not a way to skip approval. Even cabinet shop drawings can be useful for construction coordination without being a routine municipal permit requirement.^{[4][7][10][20]}

The inspection stages to plan before construction

The assigned inspection list varies by scope. New homes and additions commonly involve the stages below; a minor trade project may require only a few. Schedule approvals before the work is buried or covered, and keep approved plans and required reports available.

Inspection guidance: Austin checklists; Leander’s published sequence (an older guide, so use the current permit list for actual scheduling); Jonestown’s June 2026 packet.^[2][9][20]

City requirements and agency fees

How to read the fees: SF means square feet, but the area being billed differs by city. Fees below are selected residential items, not an all-inclusive project total. Add only the charges assigned to your scope. Plan preparation, engineering, surveys, testing and contractor permit coordination are private services outside these agency fees.

Research date: October 10, 2026. Source dates are identified below. Confirm the current adopted schedule, area calculation, inspection inclusions and utility/impact charges when the application is classified. Review notes flag rates that need further agency confirmation.

County, septic, and LCRA approvals: separate from the city permit

A city building permit does not establish wastewater capacity or authorize every site improvement. Confirm the correct OSSF authority for the parcel. Do not add city, county and LCRA septic permit charges together unless each authority confirms that separate charges apply.

Travis County

The January 2026 development schedule lists these wastewater and inspection items. Development, drainage or floodplain review may be separate and address-specific.^[22]

Williamson County

For properties served by its OSSF program, the county’s currently posted sheet, updated September 2025, lists:^[23]

Hays County

County residential development requires a compliant parcel and applicable development/wastewater approvals. Check whether city review or an interlocal arrangement also applies. January 2026 county fees include:^[25][24]

LCRA: Lake Travis and Highland Lakes wastewater jurisdiction

LCRA administers OSSF approvals within its designated lakeside jurisdiction; use the official map for the actual property. Building approval does not replace septic authorization. Posted fees include:^[26][27]

What else belongs in the permitting budget?

Ask for separate lines for agency charges, plan preparation, engineering, surveys, energy testing and permit coordination. Water/sewer impact fees, meters, tap fees, utility service changes, driveway/right-of-way approvals, tree work, floodplain review, replats or variances may add cost when triggered. They are not universal charges on every remodel.

A bedroom addition or casita can affect septic capacity even when the existing system is working well. A structural wall removal can require a beam design and foundation verification without increasing the home’s footprint. A straightforward finish update can have a much smaller approval package. Scope determines the path.

A smoother path from concept to final approval

1. Confirm the address and use. Identify authorities, zoning, private restrictions, utilities and ADU eligibility.
2. Define the work. Record demolition, structural changes, conditioned area and every affected trade.
3. Build the right plan package. Coordinate architectural, structural, site, energy, MEP and manufacturer documents.
4. Resolve review comments and obtain issuance. A submitted application is not a permit to begin construction.
5. Plan inspection hold points. Keep work accessible and upload required engineering/testing reports.
6. Close the permits. Complete corrections, final inspections, utility releases and required occupancy authorization.

This is a planning guide, not an agency approval or a guaranteed permit quote. Jurisdiction, adopted rules, billed area and the issued permit determine the requirements for a particular property. Confirm flagged rates with the permitting authority before setting your project budget.