Bolthole Index

Hays County, Texas

Building permits, zoning and septic rules in Buda, Texas

Buda, Texas requires building permits for residential construction inside city limits, and the City of Buda Development Services office issues them1. Buda also zones all land within the corporate limits2. We could not confirm who issues septic permits inside the city, so ask Hays County Development Services and the city before you buy. Land outside city limits follows Hays County's rules.

At a glance

Building permit
Required inside Buda city limits, with listed exemptions1
Zoning
Yes: all land in the city limits is classified on the Official Zoning District Map2
Building code
2024 International Building Code and 2024 International Residential Code, with local amendments3
Plan review fee
$500 plus $0.25 per square foot for residential new construction4
Septic permits
Not confirmed inside city limits; Hays County issues them in unincorporated areas5
Farm-zone minimum lot
120,000 square feet in the AG district6

Who to call

Building permits

City of Buda Development Services

Building permits, tree removal, fences, driveways, site development and other city permits, applied for through the city's online portal.

512-312-5745

permits@budatx.gov

Buda City Hall, 405 E Loop St, Bldg 100, Buda, TX 78610

Online permits →

Septic permits

Hays County Development Services (septic permits)

On-site sewage facility (septic) permits in unincorporated Hays County; ask whether a lot inside Buda is covered.

512-393-2150

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Off-grid gear

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

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Do you need a building permit in Buda, Texas?

Yes. Buda requires building permits for residential construction inside city limits, and the city's residential code lists the specific work that is exempt1. An exemption never authorizes work that violates the code or other laws or ordinances1.

The City of Buda adopted the 2024 International Building Code and separately adopted the 2024 International Residential Code for one- and two-family dwellings, both with local amendments3. Buda's permit page lists new buildings, pools, structural changes, fences, driveways and re-roofing among the work that needs a permit7.

Plan review for residential new construction costs $500 plus $0.25 per square foot, and the schedule includes three plan reviews4. We could not confirm whether Buda has an owner-builder exemption, so ask Development Services before you plan to build the house yourself.

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

City of Buda Development Services issues building permits inside Buda. Call 512-312-5745 or email permits@budatx.gov if you are unsure whether a project needs a permit7.

All permit applications go through the MyGovernmentOnline portal7. The office is at Buda City Hall, 405 E Loop St, Bldg 100, Buda, TX 786107.

Hays County Development Services does not take the place of the city office for lots inside Buda; the county's permit rules cover unincorporated land8.

Does Buda have zoning, and what does it mean for lot size and setbacks?

Yes. Buda divides all land within its corporate limits into zoning districts shown on the Official Zoning District Map, so check your parcel's district before you buy2.

In the AG (agricultural) district, the minimum lot is 120,000 square feet, buildings may cover 25 percent of the lot and stand up to 35 feet tall, and setbacks are 35 feet in front and 30 feet in the rear691011. Side setbacks are 20 feet interior and 25 feet on a corner11.

In the R-3 one- and two-family district, the minimum lot is 6,000 square feet, coverage is capped at 50 percent, height at 30 feet, and setbacks are 20 feet front and rear and 7.5 feet on an interior side12131415. Other parts of the Unified Development Code can tighten these numbers, and the stricter rule applies12.

Buda's zoning does not extend to unincorporated Hays County, where the county says it has no zoning authority outside the San Marcos Regional Airport area16.

How do septic permits work in Buda?

We could not confirm who issues septic permits for lots inside Buda city limits. Buda's code sets sewer-depth rules for private sewage disposal connections but does not name a septic authority in the material we reviewed, and we found no official Buda page on septic permits or inspections.

In unincorporated Hays County, Hays County administers septic permits, and every new, replacement or altered system needs one517. Texas law also lets an owner install a septic system serving their own single-family home if the local permitting authority allows it18.

If a lot inside Buda is not on city sewer, call Hays County Development Services at 512-393-2150 and City of Buda Development Services at 512-312-5745 and ask which of them permits the system197.

Can you live in an RV or tiny home in Buda?

We could not confirm Buda's rule on living in an RV, camping on private land or occupying a tiny home. The zoning use chart we reviewed has no RV or temporary-camping row, and we found no tiny-home occupancy rule.

Because Buda zones every parcel inside city limits2, the answer depends on the parcel's district. Call City of Buda Development Services at 512-312-5745 before you park or build anything you plan to live in7. Hays County's lack of zoning applies only outside city limits16.

Building a home in Buda: the steps, in order

  1. Find the parcel's zoning district on the Official Zoning District Map and check its lot size, setbacks, height and coverage limits20.
  2. Ask City of Buda Development Services whether your project needs a building permit and what the residential code exempts7.
  3. Confirm how the lot will handle sewage, since we could not confirm the septic authority inside city limits19.
  4. Submit the permit application and plans through the MyGovernmentOnline portal; residential new construction plan review is $500 plus $0.25 per square foot74.
  5. Check whether the lot lies in a flood-hazard area, where Buda restricts or prohibits flood-dangerous uses and requires flood protection at initial construction21.
  6. If you are subdividing, expect a completeness determination within 10 business days of the vesting date22.

What stays with Hays County, and what to check before you buy in Buda

Land outside Buda's city limits answers to Hays County, where development permits, septic permits and driveway access are county matters2324.

A driveway onto a Texas state highway needs a state permit regardless of who issues local permits25.

Hays County's effective property tax rate is 1.7 percent and the median tax bill is $6,420 per year2627. USDA rates only 2.2 percent of the county's soils as not limited for a conventional septic drain field, so most lots need a site evaluation or an engineered system28.

Watch-outs

  • We could not confirm who permits septic systems inside Buda city limits; call Hays County Development Services at 512-393-2150 and the city at 512-312-5745 before you close197.
  • Buda's rules for RVs, tiny homes and camping on private land are unconfirmed, and zoning district decides the answer2.
  • Buda's published permit page and the city code may describe shed exemptions differently, so confirm any accessory building with Development Services before you build7.
  • We could not confirm when Buda requires a certificate of occupancy; the city publishes a fee for one, so ask Development Services4.

Sources

  1. City of Buda Code, § 6.02.381-382 Residential Code (Buda), quoted and re-checked
  2. City of Buda Unified Development Code, Subsection 2.02 Zoning Districts (Buda), quoted and re-checked
  3. City of Buda Code, § 6.02.051-052 Building Code (Buda), quoted and re-checked
  4. City of Buda Appendix A, § A4.001 Building and Development Fees (Buda), quoted and re-checked
  5. Septic Permits, quoted and re-checked
  6. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  7. City of Buda Development Services (budatx.gov)
  8. hayscountytx.gov, quoted and re-checked
  9. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  10. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  11. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  12. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  13. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  14. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  15. City of Buda Unified Development Code, Subsection 2.07 Zoning Dimensional Regulations (Buda), quoted and re-checked
  16. Development & Planning, quoted and re-checked
  17. Septic Permits, quoted and re-checked
  18. Getting a Permit for an OSSF - Such as a Septic System, quoted and re-checked
  19. Hays County Development Services (septic permits) (hayscountytx.gov)
  20. City of Buda Unified Development Code, Subsection 2.02 Zoning Districts (Buda), quoted and re-checked
  21. City of Buda Unified Development Code, Subsection 4.06 Flood Damage Prevention Regulations (Buda), quoted and re-checked
  22. City of Buda Unified Development Code, Subsection 3.02 Subdivision Procedures (Buda), quoted and re-checked
  23. Development & Planning, quoted and re-checked
  24. Development Process, quoted and re-checked
  25. Section 4: Driveway Permits, Design, and Materials (Texas statewide rule), quoted and re-checked
  26. Effective property tax rate: Bolthole Index county data
  27. Median property tax bill: Bolthole Index county data
  28. 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 24, 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 Buda

Buda’s own rules

  • Building permitRequired

    Residential construction and covered residential-code work within Buda city limits.

    • The code lists exemptions, including one-story detached accessory structures other than storm shelters not exceeding 120 square feet, certain fence replacements, and other specifically listed work.
    • Exemption does not authorize work violating the code or other laws or ordinances.

    exempt detached accessory-structure floor area: <= 120 square feet (Other than storm shelters)

    “R105.2 Work exempt from permit. Exemption from permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of this jurisdiction. Permits shall not be required for the following:”
  • Building code adoptedAdopted (with conditions)

    Building construction within Buda city limits.

    • The 2024 International Building Code is subject to local amendments in § 6.02.052.
    • The City separately adopts the 2024 International Residential Code for one- and two-family dwellings.

    International Building Code edition: 2024 (Subject to § 6.02.052 amendments) · International Residential Code edition: 2024 (Subject to § 6.02.382 amendments)

    “The International Building Code, 2024 edition, and appendices G, as published by the International Code Council, Inc., are hereby adopted and made a part of this chapter, except as amended in section 6.02.052.”
  • InspectionsRequired

    Covered plumbing work within one- and two-family dwellings in Buda city limits.

    • When concealed plumbing components must be removed and replaced with new material, the work is treated as new work.
    • The evidence does not establish an inspection requirement for every type of residential construction.
    “The stopping of leaks in drains, water, soil, waste or vent pipe; provided, however, that if any concealed trap, drainpipe, water, soil, waste or vent pipe becomes defective and it becomes necessary to remove and replace the same with new material, such work shall be considered as new work and a permit shall be obtained and inspection made as provided in this code.”
  • Local zoningPresent (with conditions)

    Land within Buda corporate limits.

    • Land is classified on the Official Zoning District Map.
    “Zoning Districts Established. The City is hereby divided into zones, or districts, and the boundaries of zoning districts set out herein are delineated upon the Official Zoning District Map. All land within the corporate limits shall be classified into the following zoning districts.”
  • Zoning districtsPublished (with conditions)

    All land within Buda corporate limits.

    • District locations and boundaries are shown on the Official Zoning District Map.
    • Property reclassification is an amendment to that map.
    “All land within the corporate limits shall be classified into the following zoning districts.”
  • Subdividing landRegulated (with conditions)

    Subdivision-related plans, construction plans, and applications required by Buda inside city limits.

    • Every required application is subject to a completeness determination.
    • An application is accepted only when accompanied by all documents required by, and prepared under, the UDC.

    completeness determination deadline: <= 10 business days (After the Official Vesting Date unless otherwise specified)

    “Applicability. The following procedures shall apply to any subdivision related plan, including Construction Plans, or Application that is required by the City and is submitted in accordance with this UDC.”
  • Building in a floodplainLimited

    Development and use in Buda flood-hazard areas.

    • Flood regulations restrict or prohibit flood-dangerous uses.
    • Uses vulnerable to floods, including facilities serving them, must be protected against flood damage at initial construction.
    “Restrict or prohibit uses that are dangerous to health, safety or property in times of flood, or cause excessive increases in flood heights or velocities;”
  • Permit feesPublished (with conditions)

    Building and development permits and reviews within Buda city limits.

    • The schedule includes three plan reviews; additional reviews require a new review fee.
    • Third-party review may be charged at actual cost.

    residential new-construction plan-review fee: 500 USD (Plus $0.25 per square foot)

    “Building plan reviews (includes three plan reviews; additional reviews require new review fee): Residential new construction review: $500.00 + $0.25 per square foot.”
  • Permit processPartial

    Subdivision-related applications required by Buda within city limits.

    • This claim addresses the published subdivision/development application process, not a complete residential building-permit workflow.
    • The responsible official determines completeness.

    completeness determination deadline: <= 10 business days (After Official Vesting Date unless otherwise specified)

    “A determination of completeness shall be made by the Responsible Official not later than the tenth (10th) business day, unless otherwise specified, after the Official Vesting Date.”

Rules another office applies inside Buda

Buda does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Minimum lot sizeSpecified

    One & Two Family Residential (R-3) District within Buda city limits.

    • The table's 8 DUA recognizes potential multi-unit development; unless modified by § 2.07.03, the minimum lot size continues to apply.
    • Additional area regulations may apply elsewhere in the UDC; the more stringent regulations apply where standards are altered.

    minimum lot area: 6000 square feet (R-3 District) · maximum density: <= 8 dwelling units per acre (R-3; does not displace the minimum lot size unless modified)

    “*DUA for R-3 and R-4 recognizes the potential for multi-unit. Unless otherwise modified by section 2.07.03., the minimum lot size shall continue to apply.”
    One more reviewed finding on this topic
  • SetbacksSpecified

    Agricultural (AG) District within Buda city limits.

    • Additional area regulations may apply elsewhere in the UDC; the more stringent regulations apply where standards are altered.

    front setback: 35 feet (AG District) · interior/corner side setback: 20/25 feet (AG District) · rear setback: 30 feet (AG District)

    “Minimum Front Yard Setback (ft) | 35 | 30 | 20 | 20 | 20 | 25 | 20 Minimum Side Yard Setback (Interior/Corner) (ft) | 20/25 | 15/20 | 10/15 | 7.5/10 | 5/10 | 15/20 | 5/10 Minimum Rear Yard Setback (ft) | 30 | 25 | 25 | 20 | 10 | 20 | 10”
    One more reviewed finding on this topic
  • Lot coverageSpecified

    Agricultural (AG) District within Buda city limits.

    • Other UDC provisions may alter building coverage for particular circumstances; the more stringent regulation applies.

    maximum building coverage: <= 25 percent (AG District)

    “Maximum Building Coverage (%) | 25 | 25 | 40 | 50 | 50 | 65 | 40”
    One more reviewed finding on this topic
  • Building heightSpecified

    Agricultural (AG) District within Buda city limits.

    • Additional area regulations may apply elsewhere in the UDC; the more stringent regulations apply where standards are altered.

    maximum height: <= 35 feet (AG District)

    “Maximum Height (ft) | 35 | 35 | 35 | 30 | 30 | 40 | 30”
    One more reviewed finding on this topic

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Buda or Hays County directly.

  • Owner-builder exemption — Owner-built residential construction inside Buda city limits.
  • Certificate of occupancy — Occupancy of buildings inside Buda city limits.
  • Minimum dwelling size — Residential dwellings within Buda city limits.
  • Living in an RV — RV occupancy on private land inside Buda city limits.
  • Camping on your land — Temporary camping on private land inside Buda city limits.
8 more unanswered
  • Tiny homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Driveway access

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 Buda publishes no rule on the point, not that none exists. Hays County’s page lists the county offices to call.

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