Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Door Replacement Across Alamo
Door replacement in Alamo typically runs $1,800 to $6,400 for an entry door, depending on size, glass package, and whether the rough opening needs reframing. Our Door Replacement team serves Alamo homes off Danville Boulevard, Stone Valley Road, and the custom-built tracts near Round Hill Country Club. We know Alamo’s housing stock leans custom and semi-custom, which means door openings rarely measure to a builder’s standard. Call (682) 281-2168 for a written quote before any work starts.
Why Juniper Windows & Doors Is Alamo’s Preferred Door Replacement Company
Juniper Windows & Doors has spent the past two-plus decades replacing doors throughout Alamo, and the homes here keep us honest. Custom builds off Hemme Avenue, semi-custom tracts near Alamo School, and the winding lots along Las Trampas Creek all throw different rough-opening complications at a crew. We’re built for that. Sean Mackey leads our team with a simple rule: scope the job fully, write the price down, and stand behind it for 365 days, parts and labor.
That’s why Alamo homeowners call us. The Relay Visibility Guarantee means you get a live arrival time you can track, before-and-after photos of the work, and a digital invoice you can pay from your phone. No four-hour windows. No mystery upcharges. No wondering who’s walking up the driveway. Every technician is background-checked and uniformed. And if a door repair or replacement fails within a year, we come back and fix it free. That second visit costs you nothing, no argument.
Door Installers in Alamo
Door installers in Alamo do more than set a slab in a frame, especially when the home is custom or sits on a hillside with real wind exposure. A proper installation here starts with measuring the rough opening, not the old door. We check for square, inspect the existing jamb and header, and confirm the door’s design pressure rating before ordering anything. On a standard pre-hung replacement in Alamo, expect to pay $1,800 to $3,200 installed. Oversized or sidelight configurations run higher.
Pre-Hung Entry Systems
A pre-hung system replaces the slab, frame, and threshold as one unit. That matters in Alamo because older custom homes often have jambs that settled out of square. Setting a new pre-hung unit into a corrected rough opening gives you a tight seal and a door that swings true for years.
Oversized and Sidelight Configurations
Much of Alamo’s housing stock includes double doors, arched tops, and entry systems with sidelights. These jobs require a crew that understands load transfer and glass sizing. We pull measurements for each opening individually and order accordingly. Nothing is “close enough.”
Door Contractors in Alamo
Door contractors in Alamo should know Contra Costa County’s permitting triggers before the first cut is made. Here’s the honest version: replacing a door without changing the rough opening or header is usually a simple swap. Changing the opening width, adding a sidelight where none existed, or cutting in a new header means a building permit and an inspection. We handle the permit application, schedule the inspection, and make sure the job closes out clean for resale. A typical permitted door replacement in Alamo runs $2,400 to $6,400, including the door, labor, permit, and inspection.
Permitted Rough-Opening Changes
If you’re widening a door opening or adding a header, the county wants to see the framing before we close the wall. We coordinate that inspection and build to code the first time. It costs more upfront, but a stop-work order costs more later.
Design Pressure Verification
Alamo’s hillside properties face wind loads that flat lots don’t. We verify the door’s design pressure rating against the home’s specific exposure before finalizing the install. A door that fails under wind load leaks, warps, and eventually stops latching. We don’t install those.
Trusted Brands We Service in Alamo
We install and service PGT, Therma-Tru, ViewLux, and CGI doors across Alamo. Each brings something different to the table: PGT for impact-rated glass that handles wind-borne debris, Therma-Tru for fiberglass entry systems that won’t rot or warp, ViewLux for slim sightlines and modern European styling, and CGI for heavy-duty hurricane-rated protection. Because we stock common replacement parts locally for these lines, Alamo homeowners aren’t waiting weeks on a hinge or weatherseal kit. One call to (682) 281-2168 gets a technician scheduled.
Common Door Replacement Problems We See in Alamo Homes
- Out-of-square rough openings on custom builds. Homes built off Stone Valley Road and around Las Trampas Ridge often have framing that settled over 20 to 40 years. Installing a new door into an unverified opening leads to gaps, drafts, and a door that binds at the top corner.
- Permits skipped on opening changes. When a homeowner widens an entry or adds sidelights without a Contra Costa County permit, resale disclosures and inspections get complicated. We’ve seen deals stall over unpermitted header work.
- Wind-load failures on hillside lots. Doors without proper design pressure ratings flex under Alamo’s ridgeline winds. That flex eventually breaks the weatherseal and lets water into the jamb.
- Warped fiberglass and delaminating glass packs. Direct afternoon sun on west-facing entries near Danville Boulevard breaks down cheap door materials fast. A quality fiberglass or impact-rated unit lasts decades here, not years.
Pricing for Door Replacement in Alamo, CA
Here’s what Alamo homeowners should budget: a standard pre-hung entry door replacement runs $1,800 to $3,200. An entry system with sidelights or an oversized custom opening runs $2,800 to $5,500. A permitted job that changes the rough opening or header runs $2,400 to $6,400, including the permit and inspection. Glass packages, hardware upgrades, and rotted-jamb rebuilds add cost. We quote every line item in writing before work starts, and the number doesn’t change unless you change the scope. Call (682) 281-2168 for a free estimate. Sean Mackey will personally review your job scope.
We Also Serve Cities Near Alamo
Our door replacement crews work regularly in Walnut Creek, Moraga, Lafayette, and Danville. If you’re just outside Alamo proper, we still show up with the same written pricing and the same 365-Day Done Right Promise. The Door Replacement in Alamo page covers our full local service footprint.
Serving Alamo, CA - Our Local Coverage Area
We’re based in the Alamo 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 About Door Replacement in Alamo
If the replacement keeps the same rough opening and header, no permit is required in Alamo. If you’re changing the opening width, adding sidelights, or installing a new header, Contra Costa County requires a building permit and a framing inspection. We handle the permit application and coordinate the inspection.
We install PGT, CGI, CWS, and ViewLux doors, plus Therma-Tru fiberglass entry systems. PGT and CGI are our most common recommendations for Alamo’s hillside wind exposure. Call (682) 281-2168 and we’ll match the right product to your home’s specific conditions.
Hillside properties in Alamo face design pressure requirements that flat-lot homes don’t. Doors need a verified wind-load rating, and the weatherseal has to hold against ridgeline gusts and winter rain. We spec glass and frame ratings per site before ordering anything.
A standard pre-hung entry door replacement usually takes one day on site. Permitted jobs that change the rough opening or header add a week or two for plan review and inspection scheduling. We give you the calendar on the written quote.
Rotted jamb or subfloor discovered after demo, a rough opening that needs reframing to square, or a header that must be replaced for code compliance. We photograph any damage before additional work proceeds and get your written approval on the change order. The original written price never silently shifts. Call (682) 281-2168 to get your exact scope quoted.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Alamo door replacement customers with written pricing and a 365-Day Done Right Promise.










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