Texas · Off-grid & homestead potential
McMullen County scores 50/100 on the Bolthole Index, a solid county profile. Its strengths are low administrative friction for a quiet rural property and manageable long-term carry cost. The trade-offs: thin water margin (24.7″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.
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Evidence strength: 97%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →
Scout McMullen County
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Property hunt
Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.
Each button opens a current land search for McMullen County. Listing sites control their own results and filters.
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Working estimate
A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.
Before an offer
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What it takes to build here — permits, zoning, and septic — scouted from McMullen County’s own official sources.
The county's permits page lists only OSSF, floodplain, subdivision, and pipeline/road-crossing permits; Texas counties lack authority to require general residential building permits in unincorporated areas.
McMullen County - Permits ↗The county regulates only subdivisions and floodplain development, not land-use zoning; Texas counties generally have no zoning authority in unincorporated areas.
McMullen County - Permits ↗The county's permits page provides OSSF (On-Site Sewage Facility) applications, indicating McMullen County acts as the local authorized agent for septic permitting under TCEQ rules.
McMullen County - Permits ↗Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Texas TCEQ regulates OSSF permits, subject to statutory exemptions including qualifying single-family tracts.
Texas Commission on Environmental Quality OSSF Program ↗Not published on an official source — confirm with the county.
Not published on an official source — confirm with the county.
Always confirm current rules with McMullen County Courthouse (Permits) before you buy or build. Scouted Jul 2026 from official county sources.
McMullen County scores 50/100 on the Bolthole Index, a solid county profile. Its strengths: low administrative friction for a quiet rural property and manageable long-term carry cost. Watch-outs: thin water margin (24.7″/yr rainfall) and elevated mid-century heat, water, rain, or wildfire exposure.
McMullen County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by McMullen County (OSSF authorized agent, per TCEQ Ch. 366). Rules change and cities within the county differ — always confirm with the county before you buy or build.
Land in McMullen County runs about $1,940 per acre, based on the latest county data.
McMullen County gets about 24.7" of rain a year, with severe drought in roughly 16.3% of years.
A representative private-land location has about 75 people within a 30-minute drive and 2,040,080 within two hours. The road-network catchments count population across county lines and clusters of smaller cities; straight-line radius values remain available as a comparison.
Off-grid gear
Going off-grid in McMullen County means bringing your own water and power. The kit we’d start with:
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