A Northern California Commercial Building Services Contractor Self-Performing Roofing and Building Renovations

ACS handles roofing and renovation under one relationship, so you’re not managing separate contractors or separate costs.

Roofing

Construction

Our Commercial Roofing Services

Allied Construction has installed and restored commercial roofing systems across Northern California for over two decades. Recent work includes a multi-year restoration project for Safeway and hospital roofing for Sutter Health facilities in Novato and San Francisco. We work across every system, TPO, PVC, acrylic, metal, tile, and shingle, and recommend what fits your building before anything else.

New Roofing

ACS installs new construction roofing and full tear-off replacements across NorCal, from Tri-Valley heat to Bay-adjacent fog, with a pre-construction process built to protect your tenants and operations throughout the job.

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Roof Restoration

A fluid-applied acrylic restoration on a stable substrate can extend roof life by 10 to 20 years at a fraction of replacement cost, with the same manufacturer warranty as a new single-ply system.

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Emergency Leak Repair

ACS deploys service crews across Northern California within 24 to 48 hours to get an active leak under control before it does more damage.

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Roof Maintenance

Catch small roof problems before they become expensive ones. A maintenance relationship with ACS means priority emergency response and early identification of issues, so you’re never caught off guard by a leak.

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Our Commercial Renovation Services

Allied Construction has installed and restored commercial roofing systems across Northern California for over two decades, including a multi-year, 120,000+ square foot roof restoration for Safeway with TPO and coating work across multiple Sutter Health hospital facilities in Novato and San Francisco. We work across every system, TPO, PVC, acrylic, metal, tile, and shingle, and recommend what fits your building before anything else.

That range shows up in the work itself: balcony waterproofing for a large San Jose apartment complex, patio waterproofing for a multifamily property in San Mateo, and negative-side waterproofing through a basement wall in Oakland. None of it is guesswork. Every waterproofing scope starts with tracing the actual source of water intrusion before a repair plan gets written, not the other way around.

Tenant Improvements

When a new tenant signs and the lease clock starts, ACS handles the build-out from design through final punch walk, including new kitchens and bathrooms, specialty wall treatments, and full interior finish-out across office, medical, retail, and warehouse spaces.

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Common Area Renovations

ACS renovates lobbies, corridors, dining rooms, and shared amenity spaces in active commercial and multifamily buildings, from new flooring and paint to lighting upgrades and furniture replacement, without disrupting the operations happening around it.

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Exterior Renovations

ACS self-performs the full exterior scope under one contract: siding replacement, balcony repair, facade work, and waterproofing. Our painting license keeps every trade with one team instead of three.

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Dry Rot Mitigation

ACS doesn’t stop at the visible damage. We open the structure, inspect deep inside to find where the rot ends, and rebuild it correctly so the problem doesn’t come back.

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All Renovation Services

See the full range of commercial building renovation services Allied Construction provides across NorCal, from the Tri-Valley heat to the coastal fog line.

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The Senior Living Contracting Experts

Allied Construction has been working inside senior living communities across Northern California for over a decade, serving assisted living, independent living, and memory care facilities operated by private and publicly traded organizations. The work spans unit turnovers from paint-and-flooring refreshes to full gut renovations, common area upgrades in active dining rooms, lobbies, and corridors, exterior renovations across siding, balconies, and building facades, dry rot mitigation on deferred deck and structural maintenance, and full commercial roofing systems, all handled under one contractor relationship.

Our crews are trained to work in occupied environments where every resident is a client, and our financial structure handles the 30- to 60-day payment cycles the industry operates on. Facilities working with Allied Construction do not need separate vendors for exterior, roofing, and interior scopes. One contractor manages the full relationship from initial site walk through to project close.

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One Call Handles More Than You Think

Property managers and building owners across the Bay Area work with Allied Construction because they do not have to manage separate roofing and renovation contractors to keep their buildings in shape.

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24+ Years

in Northern California

185

Active Clients

Why Allied Construction Is Different

One Contractor for Roofing and Renovation
ACS is one of the few commercial construction companies in the Bay Area structured to self-perform across both roofing and renovation. Exterior renovations regularly surface failed flashing, deteriorated edge metal, and water infiltration at roof penetrations. Tear-off replacements uncover substrate damage, failed caulking at windows, and moisture that has worked its way into exterior walls. Balcony repairs reveal edge conditions where the roof membrane has failed at the transition. When any of those issues come up, ACS handles them under the same relationship. No referrals, no second contractor to schedule around.
Veteran-Owned, Family-Founded, 24 Years Strong
Allied Construction was founded in 2002 and remains veteran-owned and family-founded, with 185 active clients across Northern California. Most of our work comes through referrals, which is what happens when relationships hold up over two decades.

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Areas We Serve

Property managers and building owners looking for construction companies in the Bay Area turn to Allied Construction because one contractor relationship covers roofing, renovation, and senior living work across the entire region. Our teams operate out of Livermore and reach projects from the South Bay to the North Bay, across a service area where climate conditions shift more than most people expect.

Tri-Valley cities like Livermore run hot, with intense UV exposure that wears down roofing systems faster than manufacturers’ estimates assume. Ten miles west toward the Bay and coast, persistent fog and moisture create a different set of problems entirely, accelerating deterioration at seams, penetrations, and edge metal. Allied Construction works across all of it, and that range of conditions is exactly why system recommendations are made building by building, not by rule of thumb.