Sacramento ADU Builder — Granite Bay & Roseville
Veteran-Owned Sacramento ADU Builders · Detached ADUs, Garage Conversions & Additions
Call Now: (866) 797-7653ADU Builder Sacramento CA — what this page covers
Top-rated ADU builder in Sacramento, CA. A1 Building Contractors specializes in ADU construction, garage conversions, and custom homes. Licensed (CSLB…
- Licensed ADU, garage conversion, home addition and custom home builder
- Serving Sacramento, Roseville, Granite Bay, Folsom, Rocklin & Elk Grove
- Transparent 2026 pricing with permits and utilities included
How we deliver ADU Builder Sacramento CA
Every project runs through the same five-stage process, so you know what happens next and what it costs before construction starts. We handle design, engineering, jurisdictional plan check and construction under one contract, which keeps the schedule and the budget with a single accountable team.
- Stage 1 — Site walk and feasibility: setbacks, utilities, easements and lot coverage reviewed on site
- Stage 2 — Fixed-scope proposal: line-item pricing with permits, utility connections and finishes included
- Stage 3 — Design and engineering: architectural plans, Title 24 energy calcs and structural engineering
- Stage 4 — Permitting and plan check: submittal, corrections and approvals handled by our office
- Stage 5 — Construction and closeout: weekly updates, final inspection, certificate of occupancy and warranty
Common questions about ADU Builder Sacramento CA
The three questions homeowners ask most, answered plainly. Pricing reflects 2026 Sacramento-region construction costs including permits, utility connections and standard finishes.
- How much does an ADU cost? Most detached ADUs land between $135,000 and $255,000 all-in, depending on size and site conditions.
- How long does it take? Design and permitting typically run 3–5 months; construction runs 4–7 months after permits are issued.
- Do you handle permits? Yes — plan check submittal, corrections and inspections are managed in house at no extra hourly cost.
- Can I rent it out? California state law allows ADUs to be rented at 30-day-plus terms in every jurisdiction we build in.
Why homeowners choose A1 for ADU Builder Sacramento CA
A1 Building Contractors LLC is a veteran-owned, CSLB-licensed general contractor based in Roseville, CA. We design, permit and build ADUs, garage conversions, home additions and custom homes across the Sacramento region, with transparent line-item pricing and a single point of contact from first site walk to final inspection.
- CSLB #1094366 General Contractor · DRE #00898265 Broker
- Serving Sacramento, Placer, El Dorado, Yolo and Sutter counties
- In-house design, permitting, plan check and construction
- 4010 Foothills Blvd Ste 103-155, Roseville, CA 95747
- Call (866) 797-7653 for a same-day callback