Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
After
Before
AfterWindow Company in Altadena, CA
Altadena sits against the San Gabriel Mountains, where summer heat runs into the 90s and winter nights dip toward the 40s. That swing puts real stress on window frames, seals, and patio door tracks. We’re Meridian Windows & Doors, the window and door specialist inside the Garrison Partners network. Our crews work across Altadena on older foothill homes and newer builds alike, with a written price before any work starts and a 365-day guarantee behind every install. Call (817) 686-2228 and a live person picks up.
Why Altadena Homes Are Different
Altadena’s housing stock runs from 1920s Spanish and Craftsman bungalows near Lake Avenue to mid-century ranches climbing toward Chaney Trail. Many of the older frames weren’t built for double-pane glass, which means retrofit work in Altadena is more common than full tear-outs. Wood sashes on homes near Altadena Drive and Mariposa Street dry out in the summer and swell in the winter rains, so we check the rough opening before we quote anything. The foothill elevation also means stronger UV exposure. We spec glass with low-E coatings, a thin layer that reflects heat while letting light through. And because Altadena is unincorporated Los Angeles County rather than its own city, permit requirements are set by the County, not a city hall. We handle that paperwork so the homeowner doesn’t have to.
Our Main Altadena Services
Most Altadena homeowners call us about two things: replacing windows that have fogged or warped, and installing new construction windows or patio doors during a remodel. Each service has its own Altadena page with pricing and job detail.
Window Replacement in Altadena
Older Altadena homes often have original sash windows that won’t hold a seal. We remove the old unit, inspect the framing for dry rot, and install a properly measured replacement. In homes near Rubio Canyon and Lake Avenue where summer heat is strongest, we recommend low-E glass to cut indoor temperatures without blocking the mountain views. The work is covered in writing for a full year. Window Replacement in Altadena
Window Installation in Altadena
For additions, ADUs, or new construction in Altadena, we install windows into fresh openings with proper flashing and square framing. Foothill lots often mean homes are built into slopes, which requires extra care leveling the rough opening before the unit goes in. We carry new construction windows from several manufacturers and install them to each brand’s spec. Window Installation in Altadena
Patio Door Installation in Altadena
Sliding and French doors in Altadena take a beating from mountain wind and afternoon sun. A door that sticks or lets a draft through is often a track or roller problem, but just as often it’s the frame settling. We replace the full unit when needed and align it so it opens with one hand. Patio door jobs in Altadena also mean matching the door to the home’s existing style, which our manufacturer lineup handles well. Patio Door Installation in Altadena
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Altadena
We work with eight manufacturer lines, and on Altadena jobs we frequently spec PGT, CGI, and ViewLux. Keeping parts for these brands available locally shortens turnaround when a replacement component is needed. See our brands for details on each manufacturer.
Pricing for Window Company in Altadena, CA
| Service | Typical range in Altadena |
|---|---|
| Single-window replacement (standard size) | $700 – $1,400 installed |
| Single-window replacement (large or custom) | $1,200 – $2,600 installed |
| Full-home window replacement (10 – 15 windows) | $9,000 – $22,000 installed |
| New construction window installation (per unit) | $450 – $1,100 installed |
| ADU or addition window package (4 – 6 windows) | $3,200 – $7,500 installed |
| Sliding patio door replacement | $1,800 – $4,800 installed |
| French patio door replacement | $2,400 – $6,200 installed |
| Custom patio door installation | $3,500 – $9,000 installed |
| Glass replacement only (per pane) | $200 – $550 installed |
Prices in Altadena climb when we’re working on a hillside home that needs scaffolding or when the existing frame has water damage that must be repaired before a new unit goes in. Whatever the job, the price goes on paper before we start, and it does not move at the door.
Neighborhoods We Serve in Altadena
Our crews work throughout Altadena, from the flats near New York Drive up to the foothill streets off Loma Alta Drive. We know the access quirks of the canyon roads and the tight parking on the older blocks. Most calls get a response the same day.
- Altadena Meadows
- Upper Hastings Ranch
- The Presidents Streets
- East Altadena near Eaton Canyon
- Chaney Trail area
Service Area – Cities Near Altadena
Meridian Windows & Doors serves Altadena and the surrounding foothill communities. We also cover Pasadena, CA, San Marino, CA, Sierra Madre, CA, and South Pasadena, CA. Dispatch and scheduling are coordinated from our Los Angeles office, with local Altadena crews running the jobs.
Serving Altadena, CA - Our Local Coverage Area
We’re based in the Altadena 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 Window Company in Altadena
Yes. Altadena is unincorporated Los Angeles County, so permits run through County offices. We prepare the paperwork and handle the submission for any job that requires it. If your project needs an inspection, we’re there for it.
Our phones are answered by a live person around the clock, and we schedule consultations based on your availability, not a sales script. Most Altadena homeowners get on the calendar within a few days. Call (817) 686-2228 and we’ll set a time.
No. The price is written down before any work begins, and it stays that way unless you ask us to expand the scope. If we find hidden damage once the window or door is out, we stop, show you what we found, and give a written quote for the additional repair before doing anything else.
For a free estimate on any window or door project in Altadena, call (817) 686-2228. You’ll get a written price, a straight answer, and a crew that shows up as promised.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Altadena Customers Say
"Installed six replacement windows in a day and a half. Crew was punctual, disciplined, and clean. The owner is a veteran and the standards show."
- Phil R."Patio door replacement. Smooth sliding and a tight seal. Old door hauled away."
- Lena C."Solid install. Scheduling slid by a few days because of weather."
- Mona H.