Unincorporated Grayson County

In unincorporated areas, the county requires building permits for new commercial, public-accessible, and multifamily residential buildings with four or more units; pre-built buildings moved onto property; and substantial improvements under Local Government Code Chapter 233.

• Exempt Single-family dwellings
• Exempt Duplexes
• Exempt Triplexes
• Exempt Purely agricultural buildings where no workers are present and the public does not enter

Note: Single-family dwellings, duplexes, and triplexes are outside the county fire-code building permit program.

Building code

The county's authority is tied to its adopted county fire code and Texas Local Government Code Chapter 233 rather than a general countywide residential code program.

Source: Grayson County Development Services / Grayson County Fire Marshal ↗

1. 01
   Confirm the property is in unincorporated Grayson County and outside any city limits.
2. 02
   Determine whether the project falls within the county's fire-code authority: commercial, public-accessible, or multifamily residential construction with four or more units; moved-in buildings; or substantial improvements.
3. 03
   Apply through the county's MGO permit link and upload required plan submittals.
4. 04
   Complete inspections and obtain the county certificate of compliance when applicable.
5. 05
   Separately handle septic, floodplain, E-911/development certificate, or culvert matters through Development Services as required.

Source: Grayson County Development Services / Grayson County Fire Marshal ↗

• MGO Connect portal (online)

Typical sequence: County inspections for covered fire-code projects, then certificate of compliance.

Source: Grayson County Development Services / Grayson County Fire Marshal ↗