Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Door Installation Across Sebastopol
Door installation in Sebastopol runs between $900 and $4,800 for most homes, depending on whether we’re replacing a slab, swapping a pre-hung unit, or reframing an opening on an older house. We serve the 95472 ZIP and every neighborhood in it, from the Victorians near downtown to the ranch homes out toward the old Gravenstein orchards. Sebastopol’s fog belt location means doors here fail differently than they do seven miles east in Santa Rosa. The moisture gets into thresholds, jambs, and sill pans in ways that a crew from a drier valley won’t recognize. We do. Call (888) 635-0804 for a free estimate, and we’ll come out and look at what’s actually happening at the door.
Why TruePane Windows & Doors Is Sebastopol’s Preferred Door Installation Company
We’ve been working in Sonoma County long enough to know that a door in Sebastopol has to be installed differently than a door in Cotati or Rohnert Park. The morning fog that rolls in off Bodega Bay and settles over the Laguna de Santa Rosa does real work on wood frames, weatherstripping, and thresholds. Our Door Installation crews are trained to look for the moisture problems first, before we ever pull the old unit out.
Dale Kessler started TruePane with a rule that’s still on the whiteboard: if the pane is not true, the job is not done. That applies to doors the same way it applies to glass. A door that’s out of plumb in this climate will bind in fall, leak in winter, and rot in spring. We measure twice, shim deliberately, and set every unit so it opens clean in all four seasons.
When you call, a live person answers. Not a recording, not a callback service. You’ll talk to someone who can schedule a visit to your Sebastopol home and answer a straight question about cost, timing, or whether your existing jamb can be saved. We’re background-checked, uniformed, and we show up when we say we will.
Every job gets The Keystone Standard: both manufacturer warranty layers registered in writing, durations stated, before the truck leaves your driveway. And the Done Right Promise covers the workmanship. If something isn’t right, we fix it. No paperwork fight, no fine print argument.
Our Door Installation Services in Sebastopol
Entry & Swing Doors
Entry door replacement is the most common job we do in Sebastopol, and it’s where the climate does the most damage. A standard entry door in a 95472 home runs $1,200 to $3,800 installed, depending on the slab material, frame condition, and whether we’re pulling a permit for a width change. The older Craftsman bungalows near downtown often need full-frame work because the original jambs have decades of fog-belt moisture in them. We install pre-hung units with proper flashing tape and sill pans that drain outward, so the threshold doesn’t rot from behind.

Storm Doors
A well-fitted storm door does more than keep rain off the entry door. In Sebastopol’s fog belt, it creates an air buffer that reduces condensation on the primary door’s interior face. That’s the difference between a wood door that lasts twenty years and one that swells and sticks every fall. Storm door installation in Sebastopol typically runs $450 to $1,100 installed, depending on the frame material and glass package. We stock full-view and ventilating models that handle 35 to 40 inches of annual rain without leaking at the corners.

Arched & Custom Doors
Sebastopol has a stock of late-Victorian and Craftsman homes with arched openings and non-standard rough openings that won’t accept a stock door from a big-box store. We handle those. Custom door fabrication and installation in Sebastopol runs $2,500 to $7,500 for most jobs, and the real variable is whether the existing arch can be reused or whether the rough opening needs to be rebuilt. Arched doors in this climate need especially careful flashing at the top of the arc, because the geometry creates a natural water channel. We’ve seen too many arches that looked beautiful for three years and then rotted from the inside. Ours drain properly.

Pivot Doors
Pivot doors are a different animal from a standard hinged unit, and installing one in a damp climate requires real attention to the floor track and the threshold. A pivot door in Sebastopol typically runs $3,000 to $8,500 depending on size, weight, and hardware. The big-budget pivot doors we’ve installed here have mostly gone into ranch homes and newer builds on the east side of town, but we’ve done them on renovated Victorians too. The keystone detail is the sill pan under the pivot point. Water pools there if it isn’t sloped properly, and a pivot door that’s fighting a warped threshold will never close clean.
We’re also an authorized installer for PGT, CGI, and ES Windows product lines, so if you want a coastal-rated door with specific wind-load documentation, we can quote it side by side against a standard option on paper. You’ll see exactly what each line costs and what each warranty covers.

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 Sebastopol
We install and service doors from PGT, CGI, and ES Windows, among more than a dozen manufacturer lines we’re authorized to carry. For a fog-belt house in Sebastopol, PGT’s impact-rated units and CGI’s storm-tested frames hold up better than a generic slab from a home center, and the warranty paperwork matters. We register both warranty layers in writing before we leave your driveway, and we keep records so that if something fails in year five, you’re not digging through a filing cabinet trying to prove what you bought. Parts turnaround for these lines runs faster for our Sebastopol customers because we already know which units are on which houses.
Common Door Installation Problems We See in Sebastopol Homes
- Rotten sill pans from subsurface moisture. On the lower-lying parcels near the Laguna de Santa Rosa, groundwater wicks up through subfloor framing and rots the door threshold from below. A contractor who only replaces the visible slab leaves the sill pan in place, and the new door rots within two winters. We pull the old pan, inspect the framing, and install a proper pan that drains outward.
- Swollen doors that bind every fall. The fog and 35 to 40 inches of annual rain make wood swell, and the older double-hung and entry-door stock in the Craftsman homes near downtown takes the worst of it. A door that sticks in November usually means moisture is getting somewhere it shouldn’t, not just a hinge adjustment.
- Fogged or failed seals on door glass. The condensation-heavy mornings in Sebastopol’s western ZIP areas accelerate glazing seal failure. A door with an integrated glass panel that’s fogged between the panes has a blown seal, and in this climate it only gets worse.
- Unpermitted structural changes. A quote that skips the permit on a door opening change is a liability, not a discount. Sebastopol building officials require plan review and inspection for any width change or header work. Unpermitted work can void a homeowner’s insurance claim if the door fails in a storm. We pull the permit, schedule the inspection, and pass it.
Pricing for Door Installation in Sebastopol, CA
Door installation costs in Sebastopol run higher than the Bay Area average for two reasons: the moisture demands better flashing and sill details, and the older housing stock often requires reframing. Here’s what we currently see across 95472:
- Entry door slab replacement: $900 to $1,800
- Pre-hung entry door with frame: $1,500 to $3,800
- Storm door installed: $450 to $1,100
- French or double door system: $2,800 to $6,500
- Arched or custom door: $2,500 to $7,500
- Pivot door: $3,000 to $8,500
What moves the number: whether the existing rough opening is square and sound, whether we’re changing the width or height of the opening, what glass package you choose, and whether the jamb and sill pan can be saved. We give a written line-item quote before any work starts, and the number doesn’t change unless we find rot behind the wall, which we’ll show you in a photo before we touch anything else. Call (888) 635-0804 to schedule a free estimate at your Sebastopol home.
We Also Serve Cities Near Sebastopol
TruePane handles Sebastopol door installations, and our crews also cover Santa Rosa, Rohnert Park, Cotati, and Windsor. If you’re a few miles east or north of town and dealing with the same fog-belt moisture issues, the same team comes out. The climate doesn’t stop at the city line, but the moisture patterns change, and we know where.
Serving Sebastopol, CA - Our Local Coverage Area
We’re based in the Sebastopol 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 - Door Installation in Sebastopol
Yes, Sebastopol requires a permit when the door opening changes size, when header work is involved, or when you’re converting a window to a door. A straight slab-for-slab replacement in the same rough opening typically does not need a permit. Permit costs for a door opening change in Sebastopol generally run $150 to $400, depending on the scope. TruePane pulls the permit, schedules the inspection, and includes the paperwork in your written quote. If another contractor tells you to skip it, that’s a red flag, not a favor. Call (888) 635-0804 and we’ll tell you what your specific project needs.
Yes, a properly installed storm door creates an air buffer that reduces the condensation and moisture load on your primary wood door, which is exactly what causes the annual swelling and sticking in Sebastopol’s fog belt. The storm door takes the direct hit from the damp air and wind-driven rain, so the main door stays drier. We install storm doors with full perimeter weatherstripping and check the sill pan under the storm door too, because a storm door over a rotten threshold just hides the problem. Call (888) 635-0804 for a look at your specific entry.
In most of Sebastopol, building code does not require impact-rated glazing on a patio door, but it’s worth serious consideration for homes on the west side of town that catch more wind off the coastal hills. Impact-rated PGT or CGI units carry documented wind-load ratings that standard doors don’t, and that documentation matters if you ever file an insurance claim after a storm. We quote both standard and impact-rated options side by side so you can see the price difference and decide with real numbers in front of you.
A permitted, inspected door installation with manufacturer warranty documentation and wind-load ratings on file gives your insurance company what it needs to process a storm damage claim without a fight. Unpermitted work or a door without rated glazing can be grounds for a claim denial. TruePane registers both manufacturer warranty layers in writing and leaves you with a paper trail: permit record, inspection sign-off, product documentation. When the adjuster asks what was installed and when, you’ll have the answer in a folder, not a vague memory. We’ve seen how that conversation goes when the paperwork isn’t there. It doesn’t end in your favor.
On the lower-lying parcels along the east and south edges of town, groundwater wicks up through the subfloor framing and rots door thresholds and sill pans from below. This is a Sebastopol-specific failure mode that contractors from drier inland valleys miss because they only treat the visible exterior surface. We pull the old threshold, inspect the framing underneath, and install a sill pan that drains outward and isolates the door assembly from the subfloor moisture. If you’re near the floodplain and your threshold feels soft or the door is dropping, call (888) 635-0804. We’ll come look at what’s happening underneath, not just what’s visible at the surface.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Sebastopol and Sonoma County.



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