Bolthole Index

Fayette County, Texas

Zoning, building permits and septic rules in La Grange, Texas

La Grange, Texas adopts its own zoning ordinance and requires city building permits inside city limits12. Building permits and zoning come from the City of La Grange, not Fayette County3. We could not confirm who issues septic permits inside the city; Fayette County's septic program covers land outside incorporated cities4.

At a glance

Building permit
Required inside La Grange city limits; plans must accompany residential applications2
Zoning
City zoning ordinance with residential, business and industrial districts1
Building code
International Building Code, 2018 edition5
Minimum lot (District R)
7,000 sq ft for a one-family dwelling; 8,000 sq ft for two-family6
Plan-check fee
$0.20 per sq ft for residential building permits7
Floodplain
Separate city floodplain development permit for building in a flood zone8
Septic
Unconfirmed inside the city; county program applies outside incorporated cities4

Who to call

Building permits

City of La Grange Building Permits and Inspections

Building, plumbing, electric, mechanical, gas, floodplain development and zoning permits inside La Grange city limits

979-968-5805

[email protected]

155 E. Colorado St. La Grange, Texas 78945

Septic permits

Fayette County Inspector's Office

Septic (OSSF) permitting and inspection for Fayette County outside incorporated cities

979-968-1809

151 N Washington St, Rm 307 La Grange, TX 78945

Well permits

Fayette County Groundwater Conservation District

Well registration and non-exempt well permits in Fayette County

979-968-3135

[email protected]

255 Svoboda Lane, Room 115, La Grange, TX 78945

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

Off-grid gear

Going off-grid in La Grange means bringing your own water and power. The kit we’d start with:

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Does La Grange, Texas have zoning, and what does it mean for lot size?

Yes. The City of La Grange adopts and administers its own zoning ordinance for land inside city limits, with residential districts R, R-1 and R-2 plus administrative-professional, business, parking and industrial districts1. The official zoning map is on file with the city secretary9.

Lot size depends on the district. In District R, a one-family dwelling needs a lot of at least 7,000 square feet and a two-family dwelling needs at least 8,000 square feet6. District R is for single-family or two-family homes; District R-1 covers multi-family, townhouse and condominium use1.

We could not confirm La Grange's rules on RVs, tiny homes, accessory dwellings, setbacks beyond District R or lot coverage. Ask the City's building department, which also issues zoning permits3.

Do you need a building permit in La Grange, and who issues it?

Yes. La Grange requires building permits for new construction and for structural repairs or remodeling of any building or home within the city3. The City adopts the International Building Code, 2018 edition5. Plans must accompany residential applications, and no permit becomes valid until the building official approves the plans2.

The City of La Grange Building Permits and Inspections office issues the permits. Applications go to the building inspector at 155 E. Colorado St. or by email to [email protected]3. Plan-checking fees are $0.20 per square foot for residential building permits7. Starting work before a permit is issued doubles the fees7. The City takes cash or check only3.

How do septic permits work inside La Grange, Texas?

We could not confirm who issues septic permits for a lot inside La Grange city limits. Fayette County's septic rules apply throughout the county except areas within incorporated cities, and they also apply inside any city that has signed an interlocal agreement with the county4.

Before you buy a lot that is not on city sewer, call both the Fayette County Inspector's Office, which runs the county program10, and the City's building department3, and ask which one permits a septic system on that address. Texas requires a permit to construct, install, alter, extend or repair a septic system11.

Can you live in an RV or tiny home in La Grange, Texas?

We could not confirm a rule. The zoning text we reviewed did not show an RV or tiny-home provision for La Grange, and city zoning, unlike unincorporated Fayette County, does apply here1. Do not assume an RV or tiny home is allowed on a city lot.

Ask the City's building department, which issues the zoning permits, before you place one3. The unincorporated rules in the county page do not apply inside the city1.

Building a home in La Grange: the steps, in order

  1. Confirm the lot is inside La Grange city limits and find its zoning district on the zoning map held by the city secretary9.
  2. Check the district's lot-size rule; District R needs 7,000 square feet for a one-family dwelling6.
  3. Ask the City's building department whether the lot is in a flood zone; building there needs a floodplain development permit8.
  4. Submit plans with the building permit application; no permit is valid until plans are approved2.
  5. Pay plan-check fees at application2.
  6. Settle the septic or sewer question with the City and the Fayette County Inspector's Office4.
  7. Get the separate trade permits the City lists: plumbing, electric, mechanical and gas3.

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

For land outside the city, use the Fayette County page. Unincorporated Fayette County does not have zoning authority over private property use12, but development there needs a floodplain permit13. That is not La Grange's rule.

Water wells fall under the Fayette County Groundwater Conservation District, which requires every well to be registered14. Confirm with the district whether that applies to a well on a city lot15.

County figures: Fayette County's median property tax bill is $2,734 a year16. Conventional septic drain fields rate poorly on most county soils, so expect a site evaluation17.

Watch-outs

  • Septic authority inside La Grange city limits is unconfirmed; ask both the City and the Fayette County Inspector's Office before relying on either4.
  • Starting work before a permit is issued doubles La Grange's fees7.
  • Building in a flood zone inside the city needs a separate floodplain development permit8.
  • RV, tiny-home and accessory-dwelling rules inside La Grange are unconfirmed; the City's building department can answer3.

Sources

  1. Exhibit 14A Zoning Ordinance, Part II District Regulations - City of La Grange, TX (La Grange), quoted and re-checked
  2. Article 3.02: Building Code - City of La Grange, TX (La Grange), quoted and re-checked
  3. City of La Grange Building Permits and Inspections (cityoflg.com)
  4. Fayette County Sewage & Wastewater (2026 county census)
  5. Article 3.02: Building Code - City of La Grange, TX (La Grange), quoted and re-checked
  6. Exhibit 14A Zoning Ordinance, Part II District Regulations - City of La Grange, TX (La Grange), quoted and re-checked
  7. Article 3.02: Building Code - City of La Grange, TX (La Grange), quoted and re-checked
  8. Building Permits and Inspections - City of La Grange (La Grange), quoted and re-checked
  9. Exhibit 14A Zoning Ordinance, Part II District Regulations - City of La Grange, TX (La Grange), quoted and re-checked
  10. Fayette County Inspector's Office (co.fayette.tx.us)
  11. Getting a Permit for an OSSF - Such as a Septic System (Texas statewide rule), quoted and re-checked
  12. Fayette County Zoning Information and Certificate of Occupancy Letter, quoted and re-checked
  13. Instructions for Permit Application for Proposed Development, quoted and re-checked
  14. Forms & FAQ'S, quoted and re-checked
  15. Fayette County Groundwater Conservation District (fayettecountygroundwater.com)
  16. Median property tax bill: Bolthole Index county data
  17. 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

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.

Answers from the rulebook for La Grange

La Grange’s own rules

  • Building permitRequired

    Building construction inside La Grange city

    • Plans must accompany residential applications
    • No permit valid until plans approved by building official
    • Plan-checking and permit fees paid at application
    “no permit becomes valid until plans are checked and approved by the building official.”
  • Building code adoptedAdopted

    Building construction inside La Grange city

    • Exceptions or deviations go in writing to the city manager for council consideration

    adopted code: International Building Code 2018

    “there is hereby adopted by reference the international building code, 2018 edition, published by the international code council, inc.”
  • Local zoningPresent

    Land inside La Grange city limits; City adopts and administers Exhibit 14A Zoning Ordinance with districts R, R-1, R-2, administrative-professional, B, P, I

    • Ordinance originally effective December 20, 1971 with later amendments
    “§ 8 district r–single-family or two-family residential district. § 8a district r-1–multi-family, apartment, row, townhouse or condominium district.”
  • Zoning districtsPublished

    Zoning districts inside La Grange city

    • Official zoning map is on file with the city secretary
    “said zoning map, properly attested, is on file in the office of the city secretary.”
  • Minimum lot sizeSpecified

    District R single-family or two-family residential district inside La Grange city

    • Two-family dwelling 8,000 sq ft
    • Lot width not less than 70 ft at front building line; average width 80 ft
    • Average depth 100 ft

    minimum lot area one-family: >= 7000 sq ft (8,000 sq ft for two-family)

    “no building to be used as a one-family dwelling shall be constructed on any lot of less than seven thousand (7,000) square feet. no two-family dwelling shall be constructed on any lot of less than eight thousand (8,000) square feet.”
  • Building in a floodplainRequired

    Development in flood zones inside La Grange city

    • Applies to building in flood zone
    “floodplain development permit used for: new construction, additions, alternations, repairs, demolition, moving of buildings in flood zone.”
  • Permit feesPublished (with conditions)

    Building permit fees inside La Grange city

    • Fee tiers by cost of labor and materials
    • Plan-check fee $0.20 per sq ft residential
    • Work begun before permit: fees doubled

    plan-checking fee residential: per 0.2 USD per sq ft

    “plan-checking fees shall be twenty cents ($0.20) per square foot for residential building permits.”
  • Permit processPublished

    Permits inside La Grange city

    • Applications returned to building inspector, 155 E. Colorado St., or emailed to [email protected]
    “return completed applications to: building inspector 155 e. colorado st. la grange, texas 78945 email completed permits to [email protected]”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask La Grange or Fayette County directly.

  • Owner-builder exemption — Owner-builder inside La Grange city
  • Inspections — Inspections inside La Grange city
  • Certificate of occupancy — Certificate of occupancy inside La Grange city
  • Minimum dwelling size — Minimum dwelling size inside La Grange city
  • Lot coverage — Lot coverage inside La Grange city
15 more unanswered
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Subdividing land
  • Driveway access
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that La Grange publishes no rule on the point, not that none exists. Fayette County’s page lists the county offices to call.

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