Engineering Department

The County Engineering Department performs reviews of Subdivision and Manufactured Home Rental Community (MHRC) applications, and reviews Floodplain Development Permits and Right-of-Way Permits to ensure compliance with Gillespie County regulations and provides input on updating regulations as applicable. The County Engineer also plans, organizes, performs, and coordinates a variety of activities related to the design and construction of county infrastructure and engineering projects.

Subdivision Regulations

Subdivisions of land must be platted in accordance with the Subdivision and MHRC Regulations adopted by Gillespie County. The County's adopted minimum lot size for subdivisions served by well and OSSF is 6 acres per lot, with a maximum density of the parent tract divided by 8.

Example: I have 15 acres and want to subdivide. The tract cannot be subdivided because the maximum density requirement is not met.

Example: I have 30 acres and want to subdivide. The maximum number of lots is 3 lots (30÷8=3.75), and each lot must be at least 6 acres.

Model Language for HOA’s: Gillespie County is part of a Priority Groundwater Management Area. Developers and residents are encouraged to craft or amend CC&Rs to encourage water conservation, native landscapes, and night sky friendly lighting. Such action can substantially contribute to preserving our region’s natural resources for future generations and build resilience against environmental pressures, like drought and heat. Visit the Hill Country Alliance Model HOA Language page for helpful resources on best practices, landscape guidelines, and document templates to help you develop CC&Rs for your development. 

Subdivision Documents

  1. Subdivision and Manufactured Home Rental Community Regulations for Gillespie County Adopted 12-19-2022 Amended December 23, 2024 (PDF)
  2. Guidebook to the Subdivision and MHRC Regulations (PDF)
  3. Interlocal Agreement 2002 (PDF)
  4. Voluntary Preliminary Plat Review Form (PDF)
  5. Subdivision Plat Application (Fillable) (PDF)
  6. Subdivision Plat Application Checklist (PDF)
  7. Subdivision and MHRC Fee Schedule (PDF)
  8. Variance Request Form (PDF)
  9. Affidavit for Exception to Platting (PDF)

MHRC Regulations

Land that is separated into two or more spaces for the installation of manufactured homes for rent is considered a Manufactured Home Rental Community (MHRC). A manufactured home may include any type of structure that is fabricated in such a way to be able to re-assemble or otherwise moveable in whole or in parts, including but not limited to manufactured homes, mobile homes, RVs, tiny homes, shipping containers, etc. An MHRC application must be submitted and approved by the County Engineer prior to the start of construction

MHRC Documents

Floodplain Development Regulations & Documents

The Engineering Department requires a Development Permit Determination Form (DDF) to be submitted prior to the development of a property, including activities such as new construction, grading, and paving.

After the completed DDF is submitted, the Engineering Department reviews the information and will either return the DDF indicating that no additional permitting is required from the Engineering Department or will return a Development Permit Application with a checklist detailing the submittal requirements for the project. The submittal requirements are based on the project’s proximity to the 100-year floodplain and the scope of work of the project.

Right-of-Way Regulations & Documents

A right-of-way permit is required prior to constructing or modifying any improvements within public right-of-way. The ROW permit must be completed and returned to the county Engineer's office prior to the start of construction.