Cotati Multifamily Exterior Siding & Windows Renovation

Re-cladding or re-glazing a multifamily property is not a scaled-up version of a single-family job — it is a different kind of project, run to a different set of constraints. You are managing a capital budget, residents who stay in their units while the work happens, an ownership group or HOA board that has to approve the plan, and code compliance repeated across many units. Bay Area Siding Company works with Cotati property managers, HOA and condo boards, and apartment and multi-building owners on exactly this kind of large-scale exterior renovation. We are a Larkspur-based (Marin) siding and window contractor serving Sonoma County.

Request a bid or schedule a consultation: call (415) 619-5167 or start here.

Who we work with

• Property managers carrying a re-side, window-replacement, or envelope-repair line item across a building or a small portfolio.
• HOA and condo boards planning a community-wide exterior project that has to hold to the association's own architectural standards.
• Apartment and multi-building owners protecting the asset, trimming long-run maintenance, and improving unit comfort and efficiency.

Working around occupied units

The defining challenge of multifamily work is that people live there throughout. Our approach is built around keeping their lives intact: we sequence the work building-by-building or elevation-by-elevation, keep clear notice flowing to residents, protect walkways and landscaping, control dust and debris every day, and leave units weather-tight at the end of each workday rather than leaving walls open overnight. Interior access for window replacement is scheduled through the manager and communicated to tenants in advance, so any one household's disruption is measured in hours, not weeks. In a small town like Cotati, where a complex may be a real part of the neighborhood, a project that residents can live through quietly is also a project that reflects well on ownership.

One coherent property

For an HOA or a multi-building complex, a re-side is a design decision that has to read as one property across every building — and stay inside the association's architectural rules. We spec a single material, profile, and color program across the whole property and document it, so the finished community looks intentional rather than patched together, and so future repairs match years down the line. Where a board is still choosing the material, we lay out the trade-offs at portfolio scale:

• Fiber cement — a durable, low-maintenance, noncombustible envelope that holds a factory finish across a lot of exposed wall.
• LP SmartSide engineered wood — warmth and texture, with a periodic-repaint commitment to plan into the maintenance budget.
• Vinyl — where first cost leads and the profile suits the buildings.
• A brand program like CertainTeed — a single-manufacturer lineup spanning vinyl through fiber cement, useful when a board wants everything under one warranty system.

Budget and the maintenance math

At portfolio scale, the material decision is really a maintenance-cost decision. A cladding that never needs repainting, or one that resists rot and impact across many square feet of exposed wall, changes the operating budget for years, not just the year of the project. We help you weigh first cost against the maintenance and replacement cycle so the board or ownership can decide on real numbers, and we scope the work so it can be staged across budget cycles where a single-year spend is not realistic. We do not post prices, because a multifamily bid depends on unit count, building height and access, the material program, how much substrate and flashing repair the buildings need, and the phasing plan — all of which we assess on a walk-through.

Code and compliance across the property

Permitting scales with the number of units, and we handle it as part of the job. Building permits in Cotati run through the City of Cotati Community Development Department, Building Division via the city's Cloudpermit portal, and a full re-side or a window-replacement program across a complex is exactly the kind of work that is permitted and inspected; we confirm scope with the Building Division before work begins. Window replacement also brings California Energy Code (Title 24) compliance into the submittal — fenestration targets that vary by climate zone and code cycle, which we confirm at permit time rather than quoting fixed numbers. On fire, most of Cotati sits on flat valley-floor ground that is generally not mapped as a high fire-hazard zone the way foothill and ridge parcels elsewhere in Sonoma County can be, so noncombustible-material rules under Chapter 7A usually are not the driver here — but designations are parcel-specific, so if a property carries a fire-hazard designation we confirm it and spec accordingly before committing to a material program.

The local context

Cotati is a small town, and its multifamily and HOA-governed housing is a manageable, knowable set — apartment and condo developments and townhome communities largely along and near the US 101 corridor. Much of that stock is now old enough that a coordinated replacement makes more sense than continued unit-by-unit patching. The valley floor's wet winters, drawn in through the cool, marine-influenced air of the Petaluma Gap, put a premium on getting the water-resistive barrier and flashing right across every elevation — on a re-side we take walls down to the sheathing and substrate so that hidden layer can be inspected and corrected building by building, which is where multifamily water problems usually start and where they are most economical to fix once, correctly.

What we handle

Full-service exterior renovation across the property: tear-off and re-siding, window replacement (retrofit or full-frame as each opening needs), flashing and weather-barrier correction, trim, and the permitting and Title 24 paperwork. We coordinate with your management team on scheduling, resident notice, and staging from the first walk-through to the final elevation.

FAQ

Can you work on our buildings while tenants stay in place? Yes — occupied-unit work is the norm for us. We phase by building or elevation, give residents advance notice, keep units weather-tight at the end of each day, and schedule interior access for window work through the manager so any one household's disruption stays minimal.

Can a large project be staged across budget cycles? Often, yes. We can scope and sequence a big re-side or window program to proceed building-by-building across multiple budget periods while holding the material and color program consistent throughout, so the property still reads as one when it is finished.

Do you handle permitting for an entire complex? Yes. We confirm scope with the City of Cotati Building Division via Cloudpermit and handle the permits and the Title 24 energy-compliance paperwork for window replacement as part of the job.

How do you keep every building matching across an HOA property? We spec a single material, profile, and color program across the property, document it, and spec toward the association's architectural standards — so the community reads as one coherent property and future repairs match.

Request a multifamily bid in Cotati

Call (415) 619-5167 or request a bid to schedule a property walk-through. We serve Cotati and the wider Wine Country region; see completed exterior work in our project gallery, and review the material and window options at the Cotati siding replacement and Cotati window replacement pages.