Gillespie County, TX — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Engineering Department; Sanitation (On-Site Sewage Facilities) Department, Gillespie County

Street address

101 West Main St., Mail Unit 9, Room B-105, Fredericksburg, TX 78624

Phone

830-307-6196; 830-307-6048

engineering@gillespiecounty.org

Coverage

Unincorporated Gillespie County only. No public countywide general building-permit program was found for ordinary vertical construction in unincorporated areas. County permits are narrower: Development Permit Determination, floodplain development permits, right-of-way permits, subdivision and manufactured home rental community approvals, and OSSF/septic permits.

Website

Department website

Additional resources

§ 02

When a permit is required

Permit triggers and exempt work for Gillespie County

No public countywide general building permit requirement was found for all unincorporated construction. Verified county permits and approvals include: Development Permit Determination review before development; floodplain Development Permit for regulated flood-hazard-area development; ROW permit for construction in county public right-of-way; subdivision and manufactured home rental community approvals; and OSSF permits for septic systems.

Scope of work

Permit?

Small projects that do not present obstruction to flood flows or alter drainage, such as sign posts or telephone poles (may be exempted from floodplain permitting at Floodplain Administrator's discretion)

Exempt

Ordinary maintenance not considered repair or improvement (does not require ROW permit)

Exempt

Irrigation and ordinary landscaping in county ROW (placed at owner's risk; generally do not require ROW permit, though certain hazardous features may require permitting)

Exempt

Exempt Small projects that do not present obstruction to flood flows or alter drainage, such as sign posts or telephone poles (may be exempted from floodplain permitting at Floodplain Administrator's discretion)
Exempt Ordinary maintenance not considered repair or improvement (does not require ROW permit)
Exempt Irrigation and ordinary landscaping in county ROW (placed at owner's risk; generally do not require ROW permit, though certain hazardous features may require permitting)

Note: No public countywide exempt-work list for ordinary building construction was found because no general county building-permit program was found. Floodplain and ROW exemptions listed above are limited in scope.

Required documents

Development Permit Determination Form before any development
For floodplain permitting: application form, plan set, grading and paving information, flood study and digital model files when applicable, drainage report, floodproofing or elevation documentation, copies of other required permits
For ROW permits: signed application, plans, flood-conformance letter when applicable, fee payment, performance bond in some cases
For OSSF permits: septic permit application and county-required septic supporting materials

Building code: No countywide adopted building code for all unincorporated construction was found. Regulatory documents include: Flood Damage and Prevention Ordinance adopted July 28, 2025; Right-of-Way Regulations adopted May 28, 2024; Subdivision and Manufactured Home Rental Community Regulations amended December 23, 2024; and OSSF rules effective October 14, 2025.
Permit validity: Floodplain development permit approval expires 1 year from approval if no progress made. ROW permit expires if missing information not submitted within 45 days; after approval, expires 6 months if no progress made. OSSF permit good for 1 year from purchase date.
Owner-builder: No county owner-builder rule for general county building permit was found because no general county building-permit program was found.
Contractor requirements: No countywide general contractor-license program was found. County permit forms may require contractor signatures, engineered plans, bonds, or proof of authority depending on permit type.

§ 03

Application process

Typical processing: ROW permits: completeness determination within 10 business days, then review within 10 business days. No overall processing-time estimate found for floodplain or OSSF permits.

01

Before development in unincorporated Gillespie County, submit the Development Permit Determination Form to the Engineering Department. This is required prior to development, including new construction, grading, and paving.
02

Engineering reviews the determination form and either returns it marked that no additional permit is required or returns a Development Permit Application with a checklist of required submittals.
03

If the site is in regulated flood hazard areas, submit the floodplain Development Permit Application with required plans, engineering, other agency permits, and fee payment.
04

If work will occur in county road right-of-way, request a pre-application or site meeting with the County Engineer, then submit a complete ROW permit application and supporting documents.
05

If the project needs an on-site sewage facility, obtain the signed Development Permit Determination from the County Engineer's Office, then submit the OSSF permit application and required septic materials to the OSSF office.
06

Complete required inspections and final notifications with appropriate departments.

Typical processing time: ROW permits: completeness determination within 10 business days, then review within 10 business days. No overall processing-time estimate found for floodplain or OSSF permits.

Source: Engineering Department; Sanitation (On-Site Sewage Facilities) Department, Gillespie County ↗

§ 04

Fee schedule

Gillespie County building permit fees

Fee type

Amount

Minimum permit fee

$100

Plan check fee

Floodplain and ROW: actual cost for third-party engineering review. Subdivision and MHRC: actual cost for third-party engineering review and inspection.

Permit fee formula

Flat-fee or actual-cost based. Floodplain: $100 administrative fee plus actual third-party review cost. ROW: $0 for aerial utility with no new poles, $50 for individual single-family residential, $500 for multiple single-family/subdivision/MHRC/non-residential. OSSF: flat by system type and capacity.

Reinspection fee

OSSF reinspection fee $150

Penalty (no permit)

Floodplain permit fee doubled if construction started before approval. ROW permit fee doubled if construction started before approval.

Permit fees must be paid at time of application by personal check, cashier's check, or other method approved by County Treasurer, payable to Gillespie County.

Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.

§ 05

Required inspections

Scheduling and sequence

How to schedule

Floodplain Administrator (floodplain final notice and inspection) (other)
County Engineer (ROW permit inspection) (other)
Sanitation Office (OSSF inspections) (other)

Typical sequence: Engineering review starts with Development Permit Determination. Floodplain projects: permit review, possible third-party review, approval, construction, final notice, and final inspection or as-built certification. ROW projects: pre-application meeting, completeness review, approval, construction, final inspection. OSSF projects: signed Development Permit Determination, then OSSF review and inspections.

Source: Engineering Department; Sanitation (On-Site Sewage Facilities) Department, Gillespie County ↗

§ 06

Frequently asked

Common questions about unincorporated Gillespie County permits

01 Do I need a building permit in unincorporated Gillespie County, TX? ▸

02 How much does a building permit cost in unincorporated Gillespie County, TX? ▸

Building permit fees in unincorporated Gillespie County, TX are set by the local building department and vary by project type and valuation. The minimum permit fee is $100. Fees are calculated as: Flat-fee or actual-cost based. Floodplain: $100 administrative fee plus actual third-party review cost. ROW: $0 for aerial utility with no new poles, $50 for individual single-family residential, $500 for multiple single-family/subdivision/MHRC/non-residential. OSSF: flat by system type and capacity.. Plan check fee: Floodplain and ROW: actual cost for third-party engineering review. Subdivision and MHRC: actual cost for third-party engineering review and inspection..

03 How do I apply for a building permit in unincorporated Gillespie County, TX? ▸

To apply for a building permit in unincorporated Gillespie County, TX, follow these steps: 1. Before development in unincorporated Gillespie County, submit the Development Permit Determination Form to the Engineering Department. This is required prior to development, including new construction, grading, and paving. 2. Engineering reviews the determination form and either returns it marked that no additional permit is required or returns a Development Permit Application with a checklist of required submittals. 3. If the site is in regulated flood hazard areas, submit the floodplain Development Permit Application with required plans, engineering, other agency permits, and fee payment. 4. If work will occur in county road right-of-way, request a pre-application or site meeting with the County Engineer, then submit a complete ROW permit application and supporting documents. 5. If the project needs an on-site sewage facility, obtain the signed Development Permit Determination from the County Engineer's Office, then submit the OSSF permit application and required septic materials to the OSSF office. 6. Complete required inspections and final notifications with appropriate departments.

04 How long does it take to get a building permit in unincorporated Gillespie County, TX? ▸

Building permit processing times in unincorporated Gillespie County, TX typically run ROW permits: completeness determination within 10 business days, then review within 10 business days. No overall processing-time estimate found for floodplain or OSSF permits.. Timelines can vary based on project complexity and current department workload.

05 What work is exempt from building permits in unincorporated Gillespie County, TX? ▸

Not all construction work requires a permit in unincorporated Gillespie County, TX. The following work is generally exempt: Small projects that do not present obstruction to flood flows or alter drainage, such as sign posts or telephone poles (may be exempted from floodplain permitting at Floodplain Administrator's discretion); Ordinary maintenance not considered repair or improvement (does not require ROW permit); Irrigation and ordinary landscaping in county ROW (placed at owner's risk; generally do not require ROW permit, though certain hazardous features may require permitting). Note: No public countywide exempt-work list for ordinary building construction was found because no general county building-permit program was found. Floodplain and ROW exemptions listed above are limited in scope. When in doubt, confirm with the local building department before starting work.

06 How do I schedule a building inspection in unincorporated Gillespie County, TX? ▸

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Gillespie County, TX via: Floodplain Administrator (floodplain final notice and inspection), County Engineer (ROW permit inspection), Sanitation Office (OSSF inspections).

last verified April 2026 source Engineering Department; Sanitation (On-Site Sewage Facilities) Department, Gillespie County ↗ entry id permits/texas/gillespie/unincorporated

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with Engineering Department; Sanitation (On-Site Sewage Facilities) Department, Gillespie County before applying. Jaspector is not legal advice.