Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Ben Lomond
Window installation in Ben Lomond runs $650-$2,800 per opening for most replacement work, with full-frame retrofits on older cabins typically landing between $1,400 and $3,200 because of the shimming and reframing the valley’s settled foundations require. We’re TruePane Windows & Doors, and we work in the 95005 zip every week, so we know what the redwood canopy and river fog do to a window opening before we ever pull the tape. Call (888) 635-0804 and a live person answers, day or night, ready to schedule your free estimate.
Why TruePane Windows & Doors Is Ben Lomond’s Preferred Window Installation Company
Dale Kessler founded this company in 2008 on a rule that still hangs in our shop: if the pane is not true, the job is not done. That matters in Ben Lomond more than most places, because the canyon’s damp, shaded lots punish sloppy flashing and lazy squaring within a single wet season. Homeowners here have learned to ask harder questions after watching neighbors deal with rot behind siding and seals that failed two years into a code-minimum rebuild.
Our crews work the San Lorenzo Valley regularly. We know the difference between a 1920s summer cabin on pier blocks and a 2015 master-planned home off Highway 9, and we plan the job accordingly. Ben Lomond customers get background-checked, uniformed technicians who measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves your driveway. That’s The Keystone Standard, and it rides on every job with our Done Right Promise: if it’s not right, we make it right, no paperwork fights and no arguing.
Our Window Installation Services in Ben Lomond
Our Window Installation team handles the full range of residential work in Ben Lomond, but three styles come up most often in this canyon’s housing stock, and they’re worth understanding before you commit.
Casement Windows
Casement windows are the workhorse fix for Ben Lomond’s vintage cabins and early-2000s builder homes alike. Because they crank outward and seal against the frame with compression, they handle the valley’s chronic moisture better than sliding styles with brush weatherstripping. A typical casement replacement in Ben Lomond runs $850-$2,200 per unit installed, and for homes on shaded lots where the fog sits from October through April, we recommend frames with fusion-welded corners rather than mechanically fastened ones, which can wick moisture at the joints.

Single & Double Hung Windows
Double-hung windows are common in Ben Lomond’s older wood-frame cottages, and they’re also the style most likely to be swelling shut by February. We replace them often, and when we do, we favor full-frame retrofits over inserts because the rough openings on river-adjacent lots are rarely square after half a century of settling. Expect $900-$2,400 per opening depending on whether you choose wood, fiberglass, or vinyl, and whether the sill plate needs repair once the old sash comes out.

Bay & Bow Windows
Bay and bow windows are a popular comfort upgrade in Ben Lomond because they project a few feet toward whatever natural light the redwood canopy allows through. The structural work matters more here than in Scotts Valley or Santa Cruz, since the damp soil and older foundations mean the cantilevered section needs proper support and flashing or it will rot from underneath. Most bay window installations in Ben Lomond run $3,500-$7,800 including the framing, seat, and finished interior trim.

Fixed & Picture Windows
For cabins and newer rebuilds that face the San Lorenzo River or a clearing in the redwoods, fixed and picture windows deliver the biggest glass area for the money. In the shaded canyon, we steer Ben Lomond homeowners toward low-E coatings tuned for cooler conditions rather than the solar-control glass that makes sense in sunnier parts of the county. A standard picture window replacement typically runs $600-$1,800 here.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Ben Lomond
We’re an authorized installer for more than a dozen manufacturer lines, and in Ben Lomond we regularly quote, and CGI side by side on paper so you can see exactly what the price difference buys you. For impact-rated work on rebuilds, CGI’s aluminum lines perform well in the valley’s damp air where raw steel hardware corrodes quickly. We also work with ECO Window Systems for homeowners who want a strong vinyl option at a mid-range price. Parts and service turnaround for these brands is quick from our Bay Area dispatch office, and our crews serve Ben Lomond locally.
Common Window Installation Problems We See in Ben Lomond Homes
- Fogged insulating glass from canyon moisture. Early-2000s builder-grade vinyl windows in Ben Lomond’s master-planned phases lose their argon fill and fail within 10 to 15 years because the persistent fog stresses the seals far harder than in drier communities. Once the pane fogs, the unit is done, and replacement is the only real fix.
- Wood sashes that swell shut every winter. The redwood canopy holds moisture against frames from October through April, and older double-hung sashes absorb it seasonally. We replaced a 1950s casement on a River Road cabin whose jamb had swollen shut from years of canyon moisture, and the original wood sash was beyond saving. We set a new fusion-welded Milgard frame with argon-filled low-E glass and flashing tape, squaring the rough opening after finding nearly an inch of settling on the river-adjacent soil.
- Hidden rot behind improper flashing on CZU rebuilds. Post-fire construction moved fast, and some code-minimum window installs skipped proper flashing tape around the jamb. In Ben Lomond’s wet season, that mistake shows up as rot behind the siding within the first year or two, and by the time you see it from outside, the framing repair often costs more than the window did.
- Out-of-square rough openings on older cabins. Surviving pre-fire cabins frequently have window openings that are no longer square after decades of settling on the valley’s soft, river-adjacent soil. Standard replacement inserts often can’t be used, so full-frame replacement with shimming and minor reframing becomes necessary, adding labor and material to what looked like a straightforward swap.
Pricing for Window Installation in Ben Lomond, CA
Here’s what Ben Lomond homeowners can expect to pay as of this writing. A basic vinyl insert in a square, undamaged opening runs $650-$1,200. Mid-grade vinyl or entry fiberglass full-frame replacements run $1,100-$2,200 per window. Wood or premium fiberglass casement and double-hung work runs $1,600-$2,800 per opening. Bay and bow installations start around $3,500 and can exceed $7,800 depending on size and structural work. What moves the number most in Ben Lomond is the condition of the rough opening: rotted sill plates, out-of-square framing, and hidden water damage all add scope, and we quote honestly before we start, with no surprise line items on the bill. Call (888) 635-0804 for a free estimate and a written line-item quote on paper.
We Also Serve Cities Near Ben Lomond
Our crews work throughout the San Lorenzo Valley and the surrounding county. In addition to Window Installation in Ben Lomond, we serve Santa Cruz, Scotts Valley, Soquel, and Capitola. If you’re in one of those communities and dealing with fogged seals, swelling sashes, or post-fire rebuild punch-list windows, the same crew and the same Done Right Promise apply.
Serving Ben Lomond, CA - Our Local Coverage Area
We’re based in the Ben Lomond area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Window Installation in Ben Lomond
The redwood canyon traps marine fog against the San Lorenzo River, and that moisture sits on wood frames for months at a stretch from fall through spring. The wood absorbs it and expands, which is why sashes that slide fine in September bind by January. The permanent fix is replacing wood sashes with a material that doesn’t absorb moisture, typically vinyl or fiberglass, and making sure the new flashing details shed water away from the frame. Call (888) 635-0804 and we’ll look at your specific openings and give you an honest recommendation with prices on paper.
Sometimes, but not as often as homeowners hope. Many surviving cabins in the 95005 zip have settled foundations on river-adjacent soil, and the window rough openings are no longer square. If the opening is out of square by more than a small amount, an insert won’t seal or operate properly, and a full-frame replacement with shimming becomes the right call. We measure every opening twice and will tell you straight which route your house needs, along with the cost difference. Call (888) 635-0804 for a free estimate.
In Ben Lomond’s shaded lots, the biggest comfort upgrade is usually a low-E glass package tuned for cooler conditions, paired with a tighter-sealing frame style like casement. The canyon doesn’t bake in afternoon sun the way Scotts Valley does, so the goal is holding heat in and keeping moisture out, not blocking solar gain. Argon-filled low-E units make a noticeable difference in rooms that face the river or sit under full canopy. Call (888) 635-0804 for a side-by-side quote on glass packages and frame materials.
Some of the newer developments in Ben Lomond have architectural guidelines that govern window style, color, and sometimes even glass type on street-facing elevations. Before you replace, we recommend pulling your HOA’s design review requirements so we quote you windows that pass on the first submittal. We’ll work with those rules rather than around them, and we can note the relevant specifications directly in your written quote. Call (888) 635-0804 and mention your community name when you schedule.
The CZU Lightning Complex Fire triggered a sustained rebuild cycle across the San Lorenzo Valley, and many Ben Lomond homes now going through window work are either new construction or full permitted retrofits tied to current CalGreen and Title 24 energy standards. That means the windows we install on these homes must meet current code for energy performance, and the permitting path is different than it is for a simple replacement on a pre-fire cabin. We handle the permit coordination and make sure the units we install satisfy the current requirements. Call (888) 635-0804 to talk through your specific rebuild status.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Ben Lomond and the San Lorenzo Valley with window and door installation since 2008.



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