Brentwood Multifamily Exterior Siding & Windows Renovation

Re-cladding or re-glazing a multi-unit property is a different job from a single-family re-side, and it needs a contractor who thinks in terms of buildings, budgets, and occupied units rather than one house at a time. Bay Area Siding Company, a Larkspur-based (Marin) siding and window contractor, works with Brentwood property managers, HOA and condo boards, and apartment owners on exterior renovation across portfolios and communities — from a single aging building to a multi-building association in one of the city's master-planned developments.

For a portfolio walkthrough and a bid: call (415) 619-5167 or request a bid.

The problems we solve for multifamily owners

Whether you manage rentals or sit on a board, the exterior questions tend to cluster:

• Aging, mismatched, or failing cladding across many units — builder-grade siding from Brentwood's late-1990s and 2000s residential build-out that has now baked through years of Delta summers and is chalking, cracking, or opening at the seams building-wide.
• Deferred window replacement driving comfort complaints and energy cost — original dual-pane units reaching the end of their seal life across a community at roughly the same time.
• Architectural consistency — an HOA or condo community that needs every building to match, on an approved palette and profile, not a patchwork of one-off repairs.
• Long-term maintenance load — the recurring cost of patching and repainting a material that's simply worn out, versus replacing it once with something durable.

We scope all of this at the building and portfolio level, so a board or an owner can plan capital, not just react to the next failure.

Working in occupied buildings

The single biggest difference in multifamily work is that people live there while it happens. That shapes everything about how we run the job. We plan the work in phases — building by building, elevation by elevation, or stack by stack — so disruption to any one resident is bounded and predictable. We coordinate access, notice, and scheduling with your management so tenants and owners know what's happening and when. We keep egress, walkways, and parking usable, stage materials to minimize footprint, and sequence tear-off and close-in so no unit's wall is left open longer than it should be. The goal is a renovation residents can live through, not one they have to evacuate around.

Because tear-off exposes the sheathing/substrate and the water-resistive barrier (WRB), phasing also lets us inspect and correct flashing and substrate building by building — finding and fixing the water-intrusion problems that tend to repeat across units of the same vintage and construction.

Material and window choices at scale

The material conversation for multifamily balances durability, appearance, warranty, and life-cycle cost across a lot of square footage:

• Fiber cement — noncombustible, UV-stable, and low-maintenance over its life, which is why it's a frequent choice for communities that want to stop the repaint cycle. James Hardie is the most commonly specified line.
• LP SmartSide engineered wood — a warm wood look, lighter to handle across many units.
• Vinyl and CertainTeed — where budget or a specific insulated-panel spec leads, with CertainTeed's range useful for matching an existing community look.

On windows, portfolio-scale replacement usually prioritizes a consistent energy package suited to Brentwood's hot summers — dual-pane insulated glass with a low-solar-heat-gain Low-E coating — across brands like Milgard, Anlin, and Andersen, spec'd for uniformity and warranty support across many openings. See the full window replacement overview for the range.

For HOA and condo communities, we'll spec to your recorded architectural standards and approved palette so every building comes out matching — consistency across the community is usually the board's first requirement, and we treat it that way.

Permits, code, and fire compliance across units

Multifamily exterior work is permitted work, and at scale the code coordination matters more, not less. The City of Brentwood Building Inspection Division (Community Development Department) administers building permits and enforces the California Building and Energy codes; window replacement also carries a Title 24 energy component. We manage permitting and confirm current requirements with the division rather than assume them.

On fire compliance: most of Brentwood's multifamily sits on the flat Delta plain, outside designated fire-hazard zones, so for the typical community this is a durability and consistency decision. Where a property or a portion of a community falls within Cal Fire's 2025 mapped very high fire hazard severity areas near the city's open-space edges, California Building Code Chapter 7A can shape the exterior wall assembly and materials — one more reason noncombustible fiber cement often makes sense across a community with any fire-zone exposure. We check parcel designations before speccing.

Budgeting and the bid

We bid multifamily after a walkthrough, because the numbers depend on real conditions: the number of buildings and units, total exterior square footage and stories, the material and window package, how much substrate and flashing repair the phasing uncovers, access and staging constraints on an occupied site, and the phasing schedule itself. We can structure a bid to support a board's reserve-study planning or an owner's capital timeline, and phase the work across budget cycles where that helps.

FAQ

Can you re-side or replace windows while our units are occupied? Yes — that's the norm for multifamily. We phase the work building by building or elevation by elevation, coordinate notice and access with your management, and keep egress, walkways, and parking usable so residents can stay in place through the renovation.

We're an HOA board — can you match all our buildings to our approved standards? Yes. We spec to your recorded architectural standards and approved palette and profile so every building comes out consistent. Architectural consistency across the community is usually the board's first priority, and we build the scope around it.

How do you handle fire-code requirements across a large Brentwood property? We check each parcel's Cal Fire designation up front. Most Brentwood multifamily is on the flat plain outside fire-hazard zones, but where a property has fire-zone exposure near the city's edges, Chapter 7A can shape the wall assembly — often pointing to noncombustible fiber cement — and we spec accordingly and confirm with the City.

Can the project be phased across our budget cycles? Often, yes. We can structure the scope and bid to phase across buildings and budget years, which helps boards align the work with reserve-study planning and helps owners spread capital. We'll build a phasing plan with you.

Schedule a multifamily consultation

Call (415) 619-5167 or request a bid. We'll walk the property, scope the buildings, and lay out a phasing and material plan that fits an occupied community. Review finished work in our project gallery, see the wider Contra Costa service area, or explore siding replacement and window replacement in Brentwood.