Healthy-home design-build in New Braunfels, Texas
Comal and Guadalupe Counties · Central corridor · Climate zone 2A
New Braunfels adopted the 2021 code family effective 23 October 2023, with the 2021 IECC and NEC 2020, permitted through the city's own portal. The city straddles two counties, so the county-level obligations on a parcel depend on which side of the line it falls.
Between the Edwards Recharge Zone and the Comal Springs system, water is the governing local variable — first as a regulatory matter on the site, then as a building-physics matter in the walls. The two are not the same problem, and we keep them separate in the scope.
Jurisdiction facts
Authority of record: New Braunfels. Every row below is transcribed from the primary source linked at the bottom of this panel. Anything we could not confirm is flagged rather than stated.
- Adopted residential code
- 2021 (eff. 2023-10-23)
- Energy code
- 2021 IECC (NEC 2020)
- Permit portal
- City online permit portal
- Inspection regime
- City building department performs the inspections.
- Overlays and site programmes
- Edwards Recharge / Comal Springs; floodplain
- County
- Comal / Guadalupe
- Climate zone (2015-era map)
- 2A
- Climate zone (2021-era map)
- Pending Verification
Source: https://newbraunfels.gov/3495/2021-ICC-Code-Adoption · Last verified August 29, 2026
Climate-zone note
New Braunfels sits in climate zone 2A on the 2015-era map — hot and humid. For most of the year the moisture drive runs from outside toward the interior, which is the opposite of the cold-climate assumption most published detailing is written around. That single fact governs where the vapour control belongs, how a wall is expected to dry, and why an interior polyethylene layer is the wrong answer here.
The 2021-era zone designation for this jurisdiction is not settled in our record and carries a Pending Verification flag. It does not change how we detail an assembly, but it can change which code table applies, so we confirm it before submittal rather than assume it.
What we run into here
- Climate zone 2A with sustained summer humidity; recharge-zone and floodplain overlays are common.
- Parcels split between Comal and Guadalupe County obligations depending on location.
- A meaningful stock of historic housing where retrofit detailing has to respect the original assembly's ability to dry.
Elsewhere in the corridor
Building in New Braunfels?
Start with an intake. It asks what the house has to do and what the site imposes — never anything about anyone's health.
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