Type 1A Definition | Builtech Construction Group

Search Projects

Book Consultation

Glossary Definition

Type 1A

The most stringent sub-classification of Type I, with the longest required fire-resistance ratings for primary structural frames.

concrete formwork residential construction backyard rebar

Type 1A ADU: San Jose's 850-Sq-Ft Fire Safety Breakthrough

Discover how San Jose's first Type 1A ADU brings hospital-grade fire safety to backyard housing — and why ICF construction is reshaping residential resilience.

concrete formwork rebar residential construction hillside dusk

ICF Type I ADU: Building Wildfire Defense as a System

Inside LA's first Type I ICF ADU: how Builtech layered non-combustible walls, fire-rated windows, and defensible space into one wildfire-resilient system.