The San Antonio Building Code 2021 is based on the International Building Code 2021 (IBC 2021) with amendments and additions.
A good place to start is the website for the local building department or zoning board. There you will find a list of the codes that apply to your area and information on how to comply with them.
In Texas, cities like Houston, Austin, and Dallas have adopted versions of the IRC with local amendments. For example, the 2018 International Residential Code is widely used in many Texas municipalities, though the 2021 IRC is being increasingly adopted in certain areas.
There's a misconception that building a home in an unincorporated area (County) of Texas doesn't require any permits. This isn't entirely accurate. While some minor projects might not require permits, constructing a new home almost always does. The building permit in Texas Counties is often the Septic Permit.
The 2018 International Residential Code (IRC)
Additionally, the Development Services Department can provide assistance. The 'OCL' designation signifies Outside City Limits, applying to areas not governed by San Antonio's municipal zoning laws. Properties with this designation fall under Bexar County's jurisdiction, which may have different regulations.
A building permit is required in the unincorporated areas of the county any time an individual, company, corporation, or group of individuals acting as an organization constructs, builds, or s a new building to be used for commercial, public accessible, or multi-family residential purposes; OR a pre-built building ...
Area codes 210 and 726 are telephone area codes in the North American Numbering Plan (NANP) for San Antonio and most of its innermost suburbs in Bexar County in the U.S. state of Texas. The original area code, 210, was created in an area code split from area code 512 in 1992.
In the City of Los Angeles, if the size of floor space exceeds 120 sq. ft. or the structure is over 12 feet in height, you need a permit. Any electrical work will require an electrical permit.