Re-siding or re-glazing an apartment community, a condo association, or a lodging property is a different job than a single house — the exterior is bigger, the units are occupied or booked, and someone has to answer to a board, an owner, or paying guests. Bay Area Siding Company handles multifamily and commercial exterior renovation across the upper Napa Valley: full-property siding replacement, window replacement, and the envelope work that comes with it, planned and phased so the property keeps running while the work gets done.

Planning a property-wide project? Call (415) 619-5167 or request a bid.

Who we work with in Calistoga

• Property managers and apartment owners replacing tired or failing cladding and windows across a portfolio, and looking to cut the ongoing repaint-and-repair spend.
• HOA and condo boards facing a reserve-funded exterior project, where architectural consistency across every building and a defensible bid process matter as much as the work itself.
• Lodging, inn, and hospitality owners — Calistoga is a long-standing resort and spa town, and an inn or small hotel's exterior is part of the guest experience, so downtime and appearance both count.

The through-line is scale and stakeholders: many units, a budget that has to be justified, and occupants or guests who can't simply move out.

Phasing tenant-occupied and guest-occupied work

The core of a multifamily job is sequencing. We plan the work building-by-building or elevation-by-elevation so residents keep their entries, parking, and quiet hours as much as possible, and so a lodging property can stage around bookings. That means realistic per-phase schedules, clear resident and guest notice, controlled staging and debris, and daily site security so nobody's home or room is left exposed overnight. For an occupied property, the plan is as much a part of the bid as the material.

Getting the envelope right across many units

A property-wide re-side is also the one moment to fix what's been quietly failing behind the cladding across the whole complex. As we take each section off to the sheathing/substrate, we inspect and correct the water-resistive barrier (WRB) and flashing — the layers that actually keep water out — before new cladding goes on. On an older Calistoga property that inspection often surfaces the recurring leak that's been generating unit-by-unit repair tickets for years. Doing it once, correctly, across the property is what turns a capital project into a maintenance-cost reduction.

Materials for a portfolio, and the fire question

Material choice at scale is driven by lifecycle cost and code, not just looks:

• Fiber cement is the workhorse for multifamily here — noncombustible, low-maintenance, and long-lived, which matters when you're multiplying every maintenance task by dozens of units. James Hardie's California HZ10 line is a common spec.
• Vinyl and engineered wood have their place on the right property and budget.
• CertainTeed offers a single-manufacturer range if a board wants one warranty across the property.

The fire piece is a real planning input in Calistoga. The 2017 Tubbs and 2020 Glass fires both forced the city to evacuate, and CAL FIRE's 2025 maps place roughly half the city's acreage in a Fire Hazard Severity Zone — a Very High band on the northeast side along the Silverado Trail, plus larger High and Moderate areas — while much of the flat downtown core is unmapped. Where a property's parcel is designated and Chapter 7A applies to the permitted work, noncombustible cladding and fire-rated glazing come into the scope. Because a multifamily property can span more than one parcel or condition, we confirm the specifics with the City of Calistoga Building Division early — it affects both the material and the budget.

Windows across the property

Window replacement often runs alongside the re-side, and doing them together saves a second mobilization and gets the flashing integration right where the windows meet the new WRB. For a valley property, solar-control glazing tuned to California's Title 24 energy code makes a real comfort and operating-cost difference across every unit, and on fire-zone parcels the glazing spec may need tempered/multi-pane assemblies. See the window replacement hub for the brand and glass options; we spec to the current code for the property at permit time.

How a multifamily bid comes together

We scope the property in person, document the existing conditions, and build a phased scope and schedule around occupancy — then price it so a board or owner can act on it. For HOAs, we can work with the language and consistency requirements a reserve project demands. We handle permitting through the City of Calistoga Building Division. The result is a plan you can put in front of stakeholders, not a sight-unseen number.

FAQ

Can you work around occupied units and hotel bookings? Yes — phasing occupied work is the core of what a multifamily project requires. We sequence by building or elevation, give residents and guests clear notice, secure the site daily, and stage around bookings for lodging properties.

How do you keep the look consistent across an HOA's buildings? By specifying one material system, profile, and color palette across the property and installing to a single standard. For a single-manufacturer warranty across every building, a lineup like CertainTeed's can simplify the board's decision. We document it so it's defensible in the reserve process.

Does the fire code apply to our whole property? Not necessarily — it depends on the parcel(s) and scope. About half the city's acreage is in a mapped Fire Hazard Severity Zone, mostly on the northeast side, while much of the core is not, and a property can span differing conditions. We confirm what applies with the City of Calistoga Building Division before finalizing material and glazing.

Do we need permits for a property-wide exterior project? Yes. Multifamily siding and window replacement is permitted work through the City of Calistoga Building Division. We manage the submittals as part of the project.

Request a bid for your Calistoga property

We'll walk the property, document conditions, and build a phased, stakeholder-ready scope for siding, windows, or both. Compare materials and brands on the siding replacement and window replacement hubs, browse the project gallery, or explore the wine country service area. Single-building owners can also see Calistoga siding replacement and Calistoga window replacement.

Call (415) 619-5167 or request a bid.