Building permits, zoning and septic rules in Moulton, Texas

At a glance

Building permit (commercial)

Commercial development permit required inside Moulton, with a $25 fee¹³

Building inspections

The city performs none under its development permit⁴

Certificate of occupancy

Only with an architect's or engineer's self-certification letter⁵

Septic permits

Lavaca County OSSF program, through a TCEQ-licensed installer²⁶

Floodplain

Floodplain information is part of the commercial permit application⁷

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 Moulton, Texas?

Inside Moulton town limits, any commercial development requires the property owner to submit a commercial development permit application to the town¹. The application fee is $25³. The town's rules for residential building permits are not something we could confirm, so call Moulton City Hall before you pour a slab or place a home.

The commercial permit asks for a contractor list with state licenses, floodplain information, approved county and state permits, start and completion dates, and traffic and erosion control plans¹. Skipping it can bring a fine of up to $50 per week¹.

Does Moulton inspect buildings or issue certificates of occupancy?

Under its commercial development permit, the Town of Moulton performs no inspections, but copies of any third-party inspections the owner or contractor obtains must be given to the town⁴. Moulton issues a certificate of occupancy only when a Texas licensed architect or engineer certifies in a stamped letter that city, state and adopted building code requirements are met⁵. If you need a certificate of occupancy for a lender or insurer, plan to hire that professional early.

Does Moulton have zoning, and what does it mean for RVs and tiny homes?

We could not confirm whether the Town of Moulton has adopted zoning, so we cannot say what applies to RVs, tiny homes, lot size or setbacks inside town limits. Ask Moulton City Hall for the zoning map and the rules for the specific lot.

Lavaca County itself has adopted no zoning ordinance, so county-level rules on RVs, tiny homes and setbacks do not exist for unincorporated land⁸. That answer applies outside town limits and should not be read as the answer inside Moulton.

How do septic permits work in Moulton, Texas?

Lavaca County states that it enforces the state's on-site sewage facility rules and administers septic permits through a county Designated Representative². Every parcel needing a septic system must obtain a permit to install, replace or repair it⁹. The application must go through a TCEQ-licensed professional installer, and homeowners may not install the system themselves⁶.

The county decides applications within 30 days, and an appointment is required to submit the packet⁹. We could not confirm whether Moulton has its own septic rules for lots inside town limits, so ask the county OSSF office and City Hall which applies to your lot, and whether a town sewer connection is required.

Building a home in Moulton: the steps, in order

1. Ask Moulton City Hall which zoning district and residential permit rules apply to the lot; we could not confirm them.
2. Check floodplain status, since the town's permit application asks for floodplain information⁷.
3. If the lot is not on town sewer, contact the Lavaca County OSSF office for a septic permit through a licensed installer⁹.
4. For commercial work, file the commercial development permit application with the town¹.
5. Ask whether you need a certificate of occupancy and, if so, line up an architect or engineer letter⁵.

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

Septic permits and floodplain development permits in Lavaca County are county matters²¹⁰. Land outside Moulton falls under the county's development permit instead, which costs $20¹¹. For land outside the town, see the Lavaca County page.

Before buying, note that only 0% of Lavaca County soils rate as not limited for a conventional septic drain field, so expect a site evaluation and possibly an engineered system¹². Lavaca County's effective property tax rate is about 1%¹³.

Watch-outs

• Moulton's commercial development permit rules come from a 2013 ordinance, and later amendments were not checked; confirm current requirements with Moulton City Hall¹; we could not confirm Moulton's zoning, residential permit process, water well rules or whether town sewer connection is mandatory¹.
• A county development permit applies only to unincorporated Lavaca County, not inside Moulton¹⁴.

Sources

1. City of Moulton Ordinance No. 03142013-009 adding Article 3.08 Development Permit to Chapter 3 Building Regulations (Town of Moulton), quoted and re-checked
2. On-Site Sewage Facility Information, quoted and re-checked
3. City of Moulton Ordinance No. 03142013-009 adding Article 3.08 Development Permit to Chapter 3 Building Regulations (Town of Moulton), quoted and re-checked
4. City of Moulton Ordinance No. 03142013-009 adding Article 3.08 Development Permit to Chapter 3 Building Regulations (Town of Moulton), quoted and re-checked
5. City of Moulton Ordinance No. 03142013-009 adding Article 3.08 Development Permit to Chapter 3 Building Regulations (Town of Moulton), quoted and re-checked
6. On-Site Sewage Facility Information, quoted and re-checked
7. City of Moulton Ordinance No. 03142013-009 adding Article 3.08 Development Permit to Chapter 3 Building Regulations (Town of Moulton), quoted and re-checked
8. Texas law on county zoning and building authority
9. On-Site Sewage Facility Info | Lavaca County, Texas, quoted and re-checked
10. Flood Damage Prevention Ordinance, quoted and re-checked
11. Permits & Applications, quoted and re-checked
12. 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
13. Effective property tax rate: Bolthole Index county data
14. Permits and Applications, quoted and re-checked

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.