Llano County, TX - 2026 Building Permit Guide

Permit Authority

Llano County does not appear to publish a general countywide city-style building permit program for all construction in the unincorporated area. The verified county controls are narrower and include floodplain development permits, OSSF permits, road cuts, plats and replats, RV parks, mobile home rental communities, and related development review through Development Services.

Department

Development Services and 9-1-1 Addressing

Address

100 W. Sandstone Street, Suite 200A, Llano, TX 78643

Phone

(325) 247-2039

Website

https://www.co.llano.tx.us/page/Development.Services

Online Permit Portal

Application Process

1. Determine whether the project triggers one of the county's verified programs: floodplain development, OSSF, road cut, plat or replat, RV park, mobile home rental community, or related development review.
2. Submit the applicable application through the county's iWorQ portal.
3. Provide all required supporting materials. For floodplain projects, the county publishes a separate Floodplain Development Requirements checklist. For OSSF work, county order and state TCEQ rules apply.
4. Wait for county review. The county reviews applications for compliance with commissioners court orders and notes that separate local, county, state, or federal approvals may also be required before permit issuance.
5. Pay the applicable county fees under the published fee schedule.
6. Complete required inspections or floodplain compliance documentation, depending on permit type, before final county closeout.

Typical processing time: 7 to 10 business days for non-floodplain determinations. More time may be required for floodplain development, septic permits, and commercial projects.

Source: Development Services and 9-1-1 Addressing

General Requirements

Based on reviewed county sources, unincorporated Llano County requires county permits or approvals for floodplain development, OSSF work, road cuts, plats and replats, RV parks, mobile home rental communities, and similar development matters handled by Development Services. No clear public evidence of a general countywide building permit requirement for all construction in the unincorporated area was found.

Required Documents

• Floodplain applications require: pre-construction elevation certificate, site plan with elevations, development or architectural plans, flood vent or floodproofing information if applicable, geotechnical compaction study if fill is used, identification for builder and owner, letter of authorization if needed, warranty deed if needed, and full scope of associated development.
• OSSF work governed by county OSSF order and state TCEQ rules.

Building code

No countywide IBC or IRC adoption for a general unincorporated-area building permit program was found. Verified county regulatory documents include the Llano County Flood Prevention Order, the Llano County On-Site Sewage Facility Order, and county subdivision regulations.

Owner-builder

The floodplain checklist requires identification for both builder and owner and allows a letter of authorization if someone other than the owner applies. No separate county owner-builder packet was found. County sources do not show a general county residential building code program.

Contractor requirements

No countywide contractor licensing program for general building permits was found. OSSF work remains subject to applicable state and county OSSF rules.

Fees

Minimum permit fee

$50

Permit fee formula

Mixed. Examples: floodplain standard residential $200; floodplain commercial $200 plus $0.10 per square foot or $15 per unit; floodplain complex $300; standard OSSF trench/tank $225; aerobic, LPD, or engineered residential OSSF $350; commercial OSSF $450; plats without designated floodplain $300 plus $10 per lot; plats with designated floodplain $500 plus $10 per lot; road cuts $250 per 50 feet minimum plus $5 per foot above 50 feet. Floodplain non-residential, smaller structures, land clearing, and basic demolition start at $50. OSSF non-major repair $100. RV floodplain permits start at $50.

Reinspection fee

Non-compliance re-inspection fee $60. Permit fees are doubled when development starts without the correct permit. Floodplain violations double the fee.

Fees change. Verify current amounts at the official fee schedule (effective 2026-03).

Work That Does NOT Require a Permit

Contact the Development Services and 9-1-1 Addressing to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

• Development Services and applicable program staff (in-person)

Typical inspection sequence: Depends on permit type. Floodplain projects require the county's published pre-construction submittals and additional compliance materials tied to the flood order. OSSF inspections governed by county OSSF order and TCEQ rules. The county does not publish a general city-style building inspection sequence for all unincorporated construction.

Additional Resources

• Building code: No countywide IBC or IRC adoption for a general unincorporated-area building permit program was found. Verified county regulatory documents include the Llano County Flood Prevention Order, the Llano County On-Site Sewage Facility Order, and county subdivision regulations.
• Floodplain Development Requirements
• On-Site Sewage Facility Order
• Fee Schedule
• Development Services
• Texas Comptroller County Directory - Llano
• License lookup guide: Texas Contractor License Requirements
• Contract template: Texas Homeowner-Contractor Agreement
• Texas hub: Texas Contractor License & Permit Hub

Frequently Asked Questions

Llano County Building Permit FAQ

Do I need a building permit in unincorporated Llano County, TX?

Based on reviewed county sources, unincorporated Llano County requires county permits or approvals for floodplain development, OSSF work, road cuts, plats and replats, RV parks, mobile home rental communities, and similar development matters handled by Development Services. No clear public evidence of a general countywide building permit requirement for all construction in the unincorporated area was found.

How much does a building permit cost in unincorporated Llano County, TX?

The minimum permit fee is $50. Fees are calculated as: Mixed. Examples: floodplain standard residential $200; floodplain commercial $200 plus $0.10 per square foot or $15 per unit; floodplain complex $300; standard OSSF trench/tank $225; aerobic, LPD, or engineered residential OSSF $350; commercial OSSF $450; plats without designated floodplain $300 plus $10 per lot; plats with designated floodplain $500 plus $10 per lot; road cuts $250 per 50 feet minimum plus $5 per foot above 50 feet. Floodplain non-residential, smaller structures, land clearing, and basic demolition start at $50. OSSF non-major repair $100. RV floodplain permits start at $50..

How do I apply for a building permit in unincorporated Llano County, TX?

1. Determine whether the project triggers one of the county's verified programs: floodplain development, OSSF, road cut, plat or replat, RV park, mobile home rental community, or related development review. 2. Submit the applicable application through the county's iWorQ portal. 3. Provide all required supporting materials. For floodplain projects, the county publishes a separate Floodplain Development Requirements checklist. For OSSF work, county order and state TCEQ rules apply. 4. Wait for county review. The county reviews applications for compliance with commissioners court orders and notes that separate local, county, state, or federal approvals may also be required before permit issuance. 5. Pay the applicable county fees under the published fee schedule. 6. Complete required inspections or floodplain compliance documentation, depending on permit type, before final county closeout.

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

Typical processing time is 7 to 10 business days for non-floodplain determinations. More time may be required for floodplain development, septic permits, and commercial projects..

How do I schedule a building inspection in unincorporated Llano County, TX?

Inspections can be scheduled via: Development Services and applicable program staff.