ADU Builders Sacramento
Back to all builders
Dedicated ADU Builder CSLB Licensed

A1 Building Contractors LLC

Granite Bay, CA

About

A1 Building Contractors LLC is a dedicated adu builder serving Granite Bay, CA. With 20 years of experience in the construction industry, they specialize in detached adu, attached adu, garage conversion, jadu (junior adu), custom design, multi-unit adu, aging-in-place / ada, luxury adu. Veteran-owned design-build ADU contractor. CSLB #1094366. 1-year labor warranty, 10-year structural warranty. Serves Sacramento and Placer County. Email: [email protected]

Services Offered

Design-Build ADU
ADU General Contracting
Garage Conversion
JADU Construction
ADU Permits & Plans
Site Preparation
ADU Architecture/Design
Foundation Work
Electrical
Plumbing

Specialties

Detached ADUAttached ADUGarage ConversionJADU (Junior ADU)Custom DesignMulti-Unit ADUAging-in-Place / ADALuxury ADU
Data sourced from: direct-submission. Last verified March 2026.

Similar Builders in Granite Bay

General Contractor

Granite Bay Custom Homes

Granite Bay, CA
Dedicated ADU Builder

IMKAT Homes

Sacramento, CA
Dedicated ADU Builder

Cronuservice

Sacramento, CA
View all builders

Get in Touch

Granite Bay, CA

Quick Facts

20 years in business
Free estimates available
Price range: $$-$$$
Source: direct-submission
Compare This Builder

Helpful Resources

Sacramento ADU Permit Process: A Complete Step-by-Step Guide (2026)

12 min read

Sacramento ADU Cost Breakdown 2026: What You'll Actually Pay

10 min read

8 Costly ADU Mistakes Sacramento Homeowners Make (And How to Avoid Them)

10 min read

All guides

Is this your business?

Claim this listing to update your info, get verified, and unlock premium features including direct phone and website links, priority placement, and lead notifications.

Premium Listing Benefits

  • Featured badge & priority placement
  • Direct phone number displayed
  • Website link visible to homeowners
  • Lead notifications & analytics