ADU Contractors in Huntington Beach, CA — License-Verified Contractors
Every contractor below holds an active California license with an office of record in Huntington Beach, verified against CSLB public data as of November 6, 2026: general builders — A (General Engineering) and B (General Building), the classifications that can build an ADU — and the licensed trades ADU construction uses, C-10 Electrical, C-36 Plumbing and C-5 Framing & Rough Carpentry. Listings are alphabetical; the featured builder is labeled, never ranked.
ADU rules — setbacks, size limits, parking, and fees — are set by the local jurisdiction and change often. Before you hire, read the ADU permit process guide and the Southern California ADU cost guide, and verify any license free at CSLB.
Mars Construction Industries Corp
ADU Cities' own design-build team
CSLB #1138550 · A · B · C-36 · C-20
Building ADUs across Los Angeles, Orange, Riverside, San Bernardino, San Diego & Ventura counties
931 license-verified contractors based in Huntington Beach — page 1 of 19
2X4 Renovation & Remodel
B4 Pals Inc
C-16C-36A Available Affordable Plumber Inc
C-36A B A Alarm Company Inc
BC-10A Hodgson Construction
BA I M Fire And Safety
C-10C-16A L Painting And Decorating
A L Contractors Inc
BC-33A M P Electrical
C-10A R K Plumbing
C-36A-ev Installs
A-home Services Inc
C-10A&a Builder Inc
BAaa Environmental
AASBBC-21HAZAaadvantage Construction Co
Aaadvantage Concrete Coatings
ASBBAancs LLC
C-10C-31Abcon Incorporated
BC-8Accord Electric Corporation
AC-10Acetech Mechanical
BC-10C-20Acr Design & Build
Acr Concrete & Asphalt Construction Inc
ABC-12C-32C-8Advanced Constructors Corp
ABC-29Ae Construction
BAe Solutions Inc
AC-10Affinity Restoration Group Inc
BC-36Ag Construction
Swift HVAC Mechanical Corp
BC-20Ai-tek
C-10C-7Alaska Petroleum Environmental Engineering Inc
AASBC-57HAZAlcantara Armando
C-36Alcoa Electrical Contractor Inc
AC-10C-31Alcoa Traffic Control Inc
AC-10C-31Alcoa Traffic Services Inc
AC-10C-31All Around Plumbing
C-36All City Electric
C-10All Good Electric
C-10All Right Electric Inc
C-10All Systems Go
C-10Allegre Custom Construction
BAlley Cat Development Inc
BAlli Plumbing
C-36Ally Construction Services LLC
BAlpha Painting, Inc.
BC-33Always Green Synthetic Grass Inc
BC-27Am Construction Co
BAmbiente Construction & Design Corp
BAmerican Builder
BAmerican Pacific Electric
C-10American Restore Inc
BC-10C-27C-33C-36C-39C-50C-51C-8American Star Plumbing
C-36American Tile & Stone Contractor
BC-33C-54Ams Builders Inc
BAnastasi Builders
BData source: CSLB public records as of November 6, 2026 · Verify any license at CSLB