Building permits, zoning and septic in Johnson City, Texas

At a glance

Building permit

Required inside city limits; issued through the city's Development Services department¹

Building code

2015 International Residential Code and related 2015 codes⁴

Plan review and inspections

Bureau Veritas acts as the city's building official²

Certificate of occupancy

Not required for single-family homes (a building final suffices); required for commercial structures⁵

Driveways

Engineered driveway plans with the permit; TxDOT approval for state highway access⁶

Septic

Blanco County OSSF program is the TCEQ authorized agent³

Wells

Registration with Blanco-Pedernales Groundwater Conservation District⁷

Who to call

Contact details are copied from each office’s official page and were checked against it on October 14, 2026.

Do you need a building permit in Johnson City, Texas?

Yes. Building projects inside Johnson City city limits go through the city's permit process, and the city's Development Services department receives and processes building permits, inspections and zoning-related matters¹. Fences, irrigation, pools, accessory buildings, signs and subcontractor trades each need their own separate permits¹.

All building projects within the city's corporate limits must comply with the 2015 editions of the International Residential Code and the related technical codes the city has adopted⁴. A single-family home does not need a certificate of occupancy; a building final is sufficient, while commercial structures do require one⁵.

This applies inside the city. Land outside Johnson City is in unincorporated Blanco County, where the answer is different; see the Blanco County page.

Who issues building permits in Johnson City, and how do you reach them?

City staff receive, process and coordinate every building permit application and inspection request, including re-inspections⁸. Bureau Veritas serves as the city's building official and conducts all residential and commercial plan review and inspection services²⁹.

A residential application includes the permit application, a plot plan, an energy report, engineered foundation plans, plan sets, and driveway and culvert plans⁸. Next-business-day inspection requests must be in by 4 p.m.².

Contact the City of Johnson City at City Hall, 303 E. Pecan Dr., or by phone at (830) 868-7111⁹.

Does Johnson City have zoning, and what does it mean for RVs, tiny homes and lot size?

The city's Development Services department handles zoning-related matters inside Johnson City¹. We could not confirm the details of the city's zoning districts, so the city's rules on RVs, tiny homes, accessory dwellings, minimum lot size and setbacks are unconfirmed here. Ask Development Services at City Hall before you buy or plan a structure.

Do not assume the county's rules carry over. Unincorporated Blanco County has adopted no county zoning ordinance¹⁰, and Blanco County's own RV and tiny-home rules cover parks and campgrounds outside municipalities, not lots inside the city¹¹.

How do septic permits work in Johnson City, Texas?

Septic permits do not come from the city's building office. Blanco County has been designated by TCEQ as the authorized agent for licensing and regulating on-site sewage facilities, and a permit must be obtained from the Blanco County Inspector's Office before construction begins¹².

Whether a particular lot inside the city can connect to city sewer is not something we could confirm; ask the City of Johnson City before planning a septic system. Blanco County requires connection to a community sewage system where possible¹³.

County-level soil data points to a tight market for conventional systems: USDA rates only about 0.8% of Blanco County soils as not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system¹⁴.

Building a home in Johnson City: the steps, in order

1. Confirm zoning and sewer or septic availability with City Hall before you buy¹.
2. Ask the Blanco County OSSF program about a septic permit if the lot is not on city sewer³.
3. Register any well with the Blanco-Pedernales Groundwater Conservation District; all wells in Blanco County must be registered⁷.
4. Prepare the application package: plot plan, energy report, engineered foundation plans, plan sets, and driveway and culvert plans⁸.
5. If the driveway reaches a state highway, get TxDOT review and approval⁶.
6. Request inspections through the city, which Bureau Veritas performs².
7. Finish with a building final; a certificate of occupancy is not required for a single-family home⁵.

What stays with Blanco County, and what to check before you buy

Septic permits and well registration stay outside the city's building office: the Blanco County OSSF program handles septic³, and the Blanco-Pedernales Groundwater Conservation District handles wells⁷. Property in a city's extraterritorial jurisdiction can be subject to separate regulations from property inside the city, so confirm which jurisdiction a parcel is in¹⁵.

Property costs are county-level figures: Blanco County's effective property tax rate is about 1%¹⁶. Confirm any floodplain, utility or short-term rental rules with the city; we could not confirm them. For land outside the city limits, use the Blanco County page.

Watch-outs

• The city's zoning code details, fee schedule and floodplain rules are unconfirmed here; ask Development Services at City Hall before you commit to a lot¹.
• City rules apply only inside Johnson City; land outside city limits in unincorporated Blanco County follows county rules¹⁵.
• Septic permits come from the Blanco County OSSF program, and a lot's sewer availability inside the city is unconfirmed³.
• The permits page lists only a short-term rental complaint phone line and no rule text, so confirm any short-term rental requirements with the city¹.

Sources

1. Planning & Permits - Johnson City (Johnson City), quoted and re-checked
2. Planning & Permits - Johnson City (Johnson City), quoted and re-checked
3. OSSF Application Checklist, quoted and re-checked
4. Planning & Permits - Johnson City (Johnson City), quoted and re-checked
5. Planning & Permits - Johnson City (Johnson City), quoted and re-checked
6. Planning & Permits - Johnson City (Johnson City), quoted and re-checked
7. Rules - Blanco-Pedernales Groundwater Conservation District, quoted and re-checked
8. Planning & Permits - Johnson City (Johnson City), quoted and re-checked
9. City of Johnson City, Development Services (Planning & Permits) (johnsoncitytx.org)
10. Texas law on county zoning and building authority
11. Blanco County Development Rules and Regulations, quoted and re-checked
12. Blanco County, Texas Development Rules and Regulations, quoted and re-checked
13. Blanco County Development Rules and Regulations, quoted and re-checked
14. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
15. Blanco County Development Rules and Regulations, quoted and re-checked
16. Effective property tax rate: Bolthole Index county data

Written October 14, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.