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 Monrovia
Door installation in Monrovia typically costs $800-$3,400 depending on whether you’re replacing a single entry door or fitting a custom French door system into an older Craftsman opening, and most projects are completed in one to two days once the door arrives. If you live north of Foothill Boulevard or up into the canyon benches, your project will likely involve Chapter 7A fire-hardening requirements that flatland homes south of Huntington Drive rarely face. We know the difference, because we’ve measured hundreds of openings from the foothills to the 91016 flats. Call (509) 265-6387 for a written price before any work starts.
Why Sightline Windows & Doors Is Monrovia’s Preferred Door Installation Company
Monrovia homeowners tend to ask the same three questions before they’ll let anyone touch a door: what’s the written price, who exactly is showing up, and what happens if the install isn’t right. We answer all three on paper before a tool is lifted.
Sonia Raman leads our Monrovia crews, and every technician who arrives at your door is background-checked, uniformed, and identified by license number before they step onto your property. That’s Haven Clause 3, and it’s not a courtesy. The quote you receive after our measured survey is the same document as your final invoice, which is Haven Clause 1. If the opening is 34 and 3/8 inches wide, that’s the number on your quote, and it’s the number we install to. No adjustment, no change order.
We’ve worked on entry doors along Norumbega Drive, French doors in the historic districts north of Hillcrest, and replacement doors in the 91017 tract homes near the 210. Each job leaves with a documented photo record, and every job is covered by the 365-Day Done Right Promise in writing. Learn more about how our Door Installation process works, or keep reading for what applies specifically to Door Installation in Monrovia.
Our Door Installation Services in Monrovia

Entry Doors
A solid-wood entry door on a 1920s Craftsman bungalow in Monrovia isn’t a stock item at a big-box store. The original rough opening is often out of square by a half inch, and the threshold has settled over 100 years of canyon moisture and dry Santa Ana cycles. We measure the frame, the sightline, and the reveal before specifying anything, then we quote a door that actually fits the opening rather than forcing the opening to fit a door. Price range in Monrovia: $1,200-$3,400 depending on wood species, glass options, and hardware.

Hurricane-Proof Front & Entry Doors
If you’re north of Grand Avenue in the Very High Fire Hazard Severity Zone, your “hurricane-proof” door is really doing double duty: it’s an impact-rated assembly that also blocks ember intrusion during Santa Ana wind events that regularly exceed 60 mph through the canyons. Chapter 7A requires dual-pane tempered glass in any glazed area and ember-resistant weatherstripping, which is a different specification from a standard coastal impact door. We specify these by U-factor and SHGC, not by what’s in stock. Expect $2,200-$5,800 for a Chapter 7A-compliant entry door in Monrovia’s foothill zones, installed with a documented photo record of the fire-rated assembly.

French & Double Doors
Monrovia’s Craftsman-era homes often featured double French doors opening onto a sleeping porch or a rear garden, and many of those openings haven’t been touched since the Herbert Hoover administration. We’ve replaced French door systems on properties along Myrtle Avenue and up toward the Monrovia Canyon Park approach, where the original openings run 60 inches wide instead of today’s standard 72. That means custom-milling jambs and matching divided-light profiles to the original fenestration character, which the city’s Historic Preservation Program does review. Typical Monrovia cost: $1,800-$4,600, with the higher range covering custom widths and wood species that match the existing trim.

Replacement Doors
Most replacement door work in Monrovia is driven by three things: seal failure from decades of dry heat, rot in balloon-frame rough openings, and insurance requirements after the Bobcat Fire changed how carriers underwrite foothill properties. We dismantle the old jamb carefully enough to see what’s behind it before we order anything, because a rotted king stud in a 1920s wall isn’t a surprise you want to discover after the new door arrives. Replacement door pricing in Monrovia runs $800-$2,900, including disposal of the old slab and hardware.

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.
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AfterTrusted Brands We Service in Monrovia
We install and service doors from Therma-Tru, CGI, and CWS, specified by performance tier and opening requirement rather than by margin. For Monrovia specifically, we keep ember-resistant weatherstripping, tempered dual-pane glass units, and divided-light muntin profiles available for faster turnaround on foothill-zone work. If you have an existing written estimate from another contractor, bring it to us for a free second opinion, and we’ll review it line by line against what your opening actually measures. We also handle Window Replacement in Monrovia when a door project reveals matching fenestration issues.
Common Door Installation Problems We See in Monrovia Homes

- Warped wood stiles and rails from Santa Ana dry heat. Doors that face north toward the San Gabriels take direct downslope wind and low-humidity heat for weeks each fall, causing solid wood to move enough to crack seals and bind latches. In Monrovia’s older stock, this often means the door was never properly sealed on all six sides.
- Rotted balloon-frame rough openings in pre-1940 construction. Monrovia’s balloon-framed Craftsman homes run studs continuously from foundation to roofline, so moisture that gets behind a door’s exterior casing can rot a 20-foot stud, not just a sill. We document what we find with photos before we quote the fix.
- Out-of-square openings in historic bungalows. A 1915 house has settled in ways that a 1995 tract home hasn’t. Doors that look square in the opening but bind at the top reveal are common in Monrovia’s historic districts, and fixing them properly means adjusting the frame, not planing the door into a wedge.
- Non-compliant ember intrusion points in foothill-zone doors. Older doors with single-pane glass or worn bottom sweeps are documented fire-spread mechanisms during the canyon wind events that hit Monrovia each fall. Chapter 7A upgrades aren’t just code, they’re what insurers in the foothill zone now ask for in writing before renewal.
Pricing for Door Installation in Monrovia, CA
A basic replacement door in a standard opening in Monrovia starts under $1,000 including disposal of the old unit. A solid-wood entry door on a Craftsman with custom trim and period hardware runs $1,200-$3,400. French door systems in custom widths run $1,800-$4,600. Chapter 7A-compliant impact doors in the Very High Fire Hazard Severity Zone run $2,200-$5,800 installed, with the measured survey included and a written price before any work starts. If your opening is non-standard, which it often is north of Foothill, the price reflects the custom sizing, not an upsell. Call (509) 265-6387 and you’ll get a written line-item quote, free, based on measurements you keep.
We Also Serve Cities Near Monrovia

Our crews serve Monrovia and the surrounding San Gabriel Valley communities, including Arcadia, Baldwin Park, Temple City, and El Monte. If you’re in one of those cities, the same written-price process applies, and our Los Angeles office coordinates scheduling with local Monrovia crews. Reach us at (509) 265-6387 for service anywhere in the area.
Serving Monrovia, CA - Our Local Coverage Area
We’re based in the Monrovia 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 Monrovia

We coordinate scheduling from our Los Angeles office and our crews serve Monrovia locally, so most appointments can be set within a few business days of your call. Our phones are answered by a live person 24/7, and once the measured survey is done, the written quote is yours to keep before any scheduling locks in. Call (509) 265-6387 and you’ll talk to a person, not a voicemail queue.
Yes, we work across Monrovia including the 91016 and 91017 ZIP codes, the historic districts near Myrtle Avenue, the foothill benches below Monrovia Canyon Park, and the tract neighborhoods south of Huntington Drive. The main difference between zones is fire-hardening code, which we handle as a standard part of the quote rather than a surprise line item.
If a door has failed and left your home unsecured or open to weather, call us at (509) 265-6387. We provide written quotes for urgent replacements, and our crews serve Monrovia directly. For a broken entry door in a foothill zone, the written price will include the Chapter 7A requirements if they apply to your parcel, because an unsecured opening in fire season isn’t something to leave undocumented.
Monrovia’s housing stock skews older and its foothill zones carry additional Chapter 7A fire-hardening requirements that cities like El Monte or Baldwin Park flatland tracts don’t face. A standard replacement door in Monrovia south of Huntington is priced comparably to those cities, but north of Foothill you’re paying for compliant glazing, ember-resistant assemblies, and documented verification. Your written quote will show exactly which line items are code-driven. Call (509) 265-6387 for an exact figure for your opening.
Every door we install in Monrovia is covered by our 365-Day Done Right Promise in writing: if it’s not done right, we make it right. That’s a clause in the Haven Standard, not a verbal assurance, and it travels with every job we’ve completed since our founding in 2012. Along with the written quote, you get a documented photo record of the finished install, so the warranty claim and the evidence live in the same file.
Written by Sonia Raman, Owner at Sightline Windows & Doors, serving Monrovia since 2012.










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