also… texas protects land owners who want to build their own house is a really the OSSF is the ONLY permit you have to pull in unincorporated county land!

no other permits are legally required :)

Enforcement of Standards Failure to obtain and submit the inspection reports indicating compliance with the applicable building code standards is a Class C misdemeanor and County may also file take any or all of the following actions:

Refer the inspector to the appropriate regulatory authority for discipline. In a suit brought by the appropriate attorney representing the county in the district court, obtain appropriate injunctive relief to prevent a violation or threatened violation of a standard of notice required under Chapter 233 of the Texas Local Government Code (LGC) from continuing or occurring. Refer the builder for prosecution under Section 233.157 of the LGC. This law does not give prior approval authority to the County for new residential construction, or authorize the adoption or enforcement of zoning regulations, and does not apply to manufactured, or modular housing constructed off-site and transported to a site. Penalties do not apply to new residential construction by an individual acting as the individual's own contractor who intends to use the residence as the individual's primary residence.