Fees, valuation & enforcement
Permit fees are a project input. Enforcement exposure is a project risk. Use the official schedule where available, then confirm valuation, trade permits, plan review, and inspection charges with the Authority Having Jurisdiction.
Official fee pathway
The final charge may depend on declared construction value, occupancy classification, square footage, plan review, state surcharges, trade permits, technology fees, and inspection activity. Do not use a neighboring city’s fee table as a substitute for this jurisdiction.
Fee desk contact
Permitting and Development Director Luz Serrato: 830-393-8357; the current department page directs development, septic/food, and driveway inspection calls to 830-393-8357; fax 830-393-8379
Ask the counter to confirm current charges before submitting a project with multiple trades or a change of use.
Financial exposure
Plan for building, mechanical, plumbing, electrical, fire, energy, zoning, septic, right-of-way, or other reviews that the project scope triggers. The lowest initial permit fee is not always the lowest project cost.
Enforcement exposure
When work begins without authorization, the agency may halt the site, require corrective plans, impose additional fees, withhold inspection release, or require concealed work to be exposed for review.
Closeout exposure
A missing final inspection or certificate can complicate occupancy, refinancing, sale, insurance, and utility connection. Preserve the approved plans and signed inspection record through closeout.
Professional field note
Even when a cosmetic or minor project does not require a building permit, zoning, floodplain, shoreline, historic, utility, fire, or right-of-way controls may still apply. Confirm the full jurisdictional picture before work starts.
Source trail
Use these direct agency or licensing links to confirm current instructions before you file, pay, or schedule work. External pages control if their information differs from this directory.
Project questions
Wilson County Permitting and Development Office is the identified county-level authority for this profile. Confirm that the property is in its service area before filing.
No verified online portal was located in the reviewed public materials. Contact Permitting and Development Director Luz Serrato: 830-393-8357; the current department page directs development, septic/food, and driveway inspection calls to 830-393-8357; fax 830-393-8379 and request the current application route before preparing a final submittal.
No fixed development, floodplain, OSSF inspection, or driveway-review time is published. The April 13, 2026 subdivision rules require Commissioners Court to approve, conditionally approve, or disapprove a complete plat application within 30 days after receipt and Development Officer sign-off; a qualifying written extension may add no more than 30 days. Under state OSSF rules, a complete septic application must be approved or denied within 30 days. OSSF Authorization to Construct and floodplain permit work are each subject to a one-year completion period unless the applicable extension or new application is obtained.
Submit the complete paper packet with the recorded deed, legal plat, scaled site drawing, verified 911 address, and required design documents to the Permitting and Development Office; incomplete applications are not accepted. Call 830-393-8357 to coordinate development, septic, and driveway inspections. Do not begin OSSF work before Authorization to Construct, and do not occupy or operate the system until it passes final inspection and the county issues a License to Operate. Authorization is valid for 12 months; if final inspection is not completed within one year, a new application and fee are required. A concrete county-road driveway requires a pre-pour inspection. Projects in a special-flood-hazard area require the applicable elevation certificate, and development with a footprint of three acres or more requires a drainage study.
Wilson County requires permits for development, driveways, and septic work. Floodplain development is administered under the Wilson County Flood Damage Prevention Order using the November 26, 2010 FIS/FIRM and later revisions. The current Wilson County Subdivision and Development Rules and Regulations were adopted April 13, 2026 and incorporate the 2021 International Fire Code for subdivision water supply, fire flow, and emergency access. OSSFs are governed by the Wilson County local order, Texas Health and Safety Code Chapter 366, and 30 TAC Chapter 285; professional OSSF design is required. The county does not publish a conventional residential structural-building permit or countywide IRC/IBC trade-code program; its published packet covers floodplain/development, OSSF, and driveway approvals. The county publishes no cosmetic- or minor-work exemption list and states that permits are required for any development, driveway, or septic work. A property outside the special-flood-hazard area may receive a floodplain exemption certificate only after the county reviews the development application and makes that determination; the application and $100 determination fee still apply. Subdivision plat exemptions exist for certain divisions qualifying under Texas Local Government Code Section 232.0015, including specified agricultural and qualifying family divisions, but those exemptions do not waive separate floodplain, driveway, or OSSF requirements.
Why permit costs vary
Building departments commonly calculate charges from valuation, occupancy, floor area, project type, plan review effort, trade scope, state surcharges, and inspection activity. A remodel that appears small on paper may still trigger structural, energy, fire, or utility review. Ask the permit counter which disciplines apply before you finalize the construction budget.
The same discipline applies to enforcement. Correcting unpermitted work after finishes are installed can require demolition, revised plans, additional inspections, and schedule disruption. Authorization is usually the less expensive project-management decision.