Commercial Roofing & Construction Built on 24 Years of Proven Experience
Allied Construction Services provides dependable commercial roofing, construction, and senior living renovation services for building owners and property managers throughout Northern California.
A Commercial Contractor You Can Count On
Decades of proven results, long-term client relationships, and a regional presence built to handle projects of all sizes.
Second-Generation, Veteran-Owned
A family business built on honesty, integrity, and accountability — we hold ourselves to a higher standard.
24+ Years of Experience
Over two decades completing commercial roofing and construction projects across Northern California.
Licensed, Insured & Bonded
California Contractor License #605271, with a firm commitment to quality workmanship on every job.
Trusted Across the Region
Relied on by building owners and property managers throughout Northern California — clients come back because the work holds up.
Three Core Capabilities, One Trusted Partner
From the roof down to the interior, ACS handles the full scope of commercial building work.
Commercial Roofing
- Roof replacement
- Roof repair
- Roof restoration & coatings
- Preventative maintenance
- New roof installation
Commercial Construction
- Tenant improvements
- Interior renovations
- Exterior renovations
- Building upgrades
- General contracting
Senior Living Construction
- Kitchen renovations
- Bathroom renovations
- ADA-conscious improvements
- Common area remodeling
- Decks & patios in occupied communities
24 Years of Proven Commercial Experience
Allied Construction Services is a second-generation, veteran-owned contractor trusted by building owners and property managers throughout Northern California. Our reputation is built on dependable service, quality workmanship, and long-term client relationships.
- Silicon Valley Business Journal — Largest Veteran-Owned Businesses
- National Roofing Contractors Association (NRCA)
- Western States Roofing Contractors Association (WSRCA)
- Independent Roofing Contractors of California (IRCC)
- Better Business Bureau (BBB)
CA CONTRACTOR LICENSE #605271
Serving Building Owners Across Northern California
A regional footprint that keeps crews close to your facility — from the East Bay to the North Bay and the South Bay.
Fremont
Commercial roofing & construction for East Bay building owners and property managers.
Hayward
Roof replacement, repair, and tenant improvements across Hayward’s commercial corridor.
Livermore
Full-service commercial contracting from our Livermore home base.
Milpitas
Roofing systems and building upgrades for industrial and commercial facilities.
San Jose
Commercial construction and renovation for South Bay owners and developers.
Santa Rosa
North Bay roofing, restoration, and senior living renovation services.
Commercial Experience Across Every Sector
Two decades of work has taken ACS into nearly every kind of commercial building in the region.
Projects Across Northern California
Commercial roofing, building renovations, and senior living construction — delivered on time and built to last.
Commercial Roofing Project 
Brookside — Stockton 
TPO Roof — Powermatics 
Hybrid Roof System — Roseville 
Piper Court Partner With a Commercial Contractor You Can Count On
Whether you need commercial roofing, renovations, tenant improvements, or construction services for a senior living facility, ACS is ready to help. Reach out for a project consultation.
Request a Project Consultation
Fill out the form below and our team will be in touch.
