So Cal Casitas & ADUs is an Irvine-based contractor specializing exclusively in accessory dwelling units across Orange County. The company was founded in 2020 by William Clements and Abraham Klein, with Scott Hess joining as Responsible Managing Officer in 2022. Permit records document completed ADU work including a 721 square foot two-bedroom detached ADU in Orange County. Active project documentation on social media confirms ongoing ADU construction in South Orange County cities including San Clemente. The company positions itself around small-volume, high-attention ADU builds — limiting annual project count to maintain personal service and custom quality on each build.

Transparency note: Scott Hess, the Responsible Managing Officer on this license, is also the qualifying individual for Concept One Homes Inc., a separate licensed California contractor.