Administrative overview · FIPS 48493
Wilson County permit authority
The first compliance decision is jurisdictional: identify the office with statutory authority over your parcel, then use its filing and inspection sequence to keep the project moving.
Jurisdictional status
County
This county profile is the primary starting point for unincorporated-area permitting.
Responsible agency
Wilson County Permitting and Development Office
For a project in or near Wilson County, this office is the identified point of contact for permit intake, statutory code enforcement, plan review coordination, and inspection release conditions. Confirm the parcel’s boundary and project type before relying on the county lane.
Direct 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
Call before mobilizing if the project has a boundary, occupancy, fire, septic, or utility question.
Permit counter
Wilson County Permitting and Development Office, Courthouse Annex II, 800 Tenth Street, Building B, Floresville, TX 78114
Operating hours
Monday-Thursday 8:00 a.m.-5:00 p.m. and Friday 8:00 a.m.-4:00 p.m.; closed 12:00-1:00 p.m. for lunch.
Review expectation
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.
Compliance workbench
Choose the next project decision.
Apply online
Open the verified digital gateway, application form, and review timeline.
Open guide →Fees & penalties
Understand fee schedules, enforcement exposure, and stop-work liabilities.
Open guide →Codes & exemptions
Read the code framework, minor-work exemptions, and inspection lane.
Open guide →Agency website
Visit the primary public source for current notices and contact changes.
Open guide →Source trail
Official sources for this profile
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
Frequently asked questions for Wilson County
Who handles permitting for this jurisdiction?
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.
How should I begin an application?
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.
How long might review take?
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.
How are inspections scheduled?
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.
Which codes and exemptions should I review?
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.