Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Patio Door Installation Across Palo Alto
Patio door installation in Palo Alto typically runs $2,800 – $7,500 for a full replacement, depending on the door size, frame condition, and whether the rough opening needs re-framing to meet Palo Alto’s building code. Most replacements take 3 – 7 days from written quote to final inspection, with permit processing adding a few days on either end. We’re a windows-and-doors contractor that serves Palo Alto neighborhoods like Professorville, Barron Park, Crescent Park, and College Terrace, and we price every job on paper before a single screw turns. We also offer our Window Installation in Palo Alto for homeowners looking to upgrade their full window package. Call (817) 686-2228 and we’ll walk you through exactly what your patio door replacement will cost and what it will take to pass Palo Alto’s inspection on the first try.

Key Takeaways:
- Palo Alto requires a building permit when a patio door replacement changes the rough opening, header, or door size.
- Our written quote includes the permit, the inspection, the re-framing, and the flashing. The price does not move at the door.
- We carry patio doors from CGI, ES Windows, and Therma-Tru, so the door spec’d for your opening is the one you actually get.
- Every installation is covered by a written 365-Day Done Right Promise. If it fails within a year, we return at no charge.
In Barron Park, we replaced a 1980s aluminum slider with a Therma-Tru fiberglass patio door after the original jamb had rotted from years of poorly managed irrigation runoff. Because the new unit was an insulated glass unit with low-E glass and a slightly taller rough opening, we re-framed the header, installed new flashing, and passed Palo Alto’s building inspection on the first callback. That is the job done the way The Garrison Standard requires: scope the opening, price the whole thing, pull the permit, and stand behind the work for a full year in writing.
For the full picture on what goes into this kind of project, see our Patio Door Installation overview page. For details specific to your neighborhood and permit path, keep reading here, or call (817) 686-2228 for a free estimate.
Why Meridian Windows & Doors Is Palo Alto’s Preferred Patio Door Installation Company
Palo Alto homeowners call us because we show up when we say we will, we put the price on paper before work begins, and we do not leave a job site with caulk smeared across the sill or a door that binds on day three. Our technicians are background-checked and uniformed, so you know exactly who is walking through the door. And when you call, a live person answers. Not a voicemail loop. Not a next-business-day callback. That matters when you are trying to get a permit question answered or schedule an inspection window.
We are part of the Garrison Partners family, operating to The Garrison Standard since 2009. A meridian is a fixed line you measure everything against. That is what the name means and how we run every install. The price gets written down before work starts. The guarantee goes in writing on every job, covering labor and materials for 365 days. If the repair or installation fails within that period, we return at no charge. No fine print about labor exclusions. That is the commitment, and it is the same on a $600 slider repair in College Terrace or a $7,000 patio door replacement in Crescent Park.
Our dispatch and scheduling are coordinated from the brand’s San Francisco Bay Area office, and crews serve Palo Alto locally. We are authorized to install and replace products from PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. That means the patio door we spec for your Palo Alto home is the one that actually fits the opening and meets the design pressure rating your inspector will ask about. If you want the full list of what we carry and how we price it, the Palo Alto service page covers it. But for most homeowners, the next question is simpler: what does the work actually involve?
Sliding Door Repair in Palo Alto
Sliding door repair in Palo Alto usually means one of three things: the rollers have worn out and the door drags or jumps the track, the lock no longer engages, or the weatherstripping has flattened and air is leaking past the panel. Homeowners in neighborhoods like Midtown and Duveneck call us when the door starts sticking in the morning and sliding easily once the afternoon sun hits the frame. That is a thermal expansion problem as much as a hardware problem, and it is common in Palo Alto’s older wood-frame homes. Most roller and track repairs run $180 – $450. A new lock set runs $120 – $250 installed. Weatherstripping replacement is typically $150 – $350 depending on the door’s age and profile.
Roller and Track Work
Worn rollers cause a sliding door to grind, bind, or fall off its track. We replace the rollers, clean and align the track, and adjust the height so the door seals evenly against the jamb. On Palo Alto’s older sliders, the original rollers are often obsolete, so we match an aftermarket roller with the correct diameter and offset for the existing frame.
Threshold and Weatherstripping
A leaking threshold is an entry point for water, especially in Palo Alto homes where irrigation runoff or winter rain sits against the base of the door. We inspect the sill pan, replace compressed weatherstripping, and reseal the threshold with a proper flashing connection. If the sill pan is rusted or missing, that is a different job, and we will tell you before we touch it.
Patio Door Replacement in Palo Alto
Patio door replacement in Palo Alto typically starts at $2,800 for a standard 6-foot slider in a newer opening that is square and has no rot. The number climbs when the rough opening is out of square, the header needs re-framing, or the home sits in a historic district where the city’s review process adds time. In Professorville, where many homes date to the 1910s and 1920s, we regularly see rough openings that are a half-inch out of square and headers that were framed under a code that no longer applies. Those are the jobs Palo Alto homeowners call us about after a big-box install quote fell apart at the measure.
Full-Frame Replacement
A full-frame patio door replacement means we remove the entire existing unit, including the jamb and threshold, down to the rough opening. We then re-frame if needed, install new flashing and a new sill pan, set the new door, and seal everything to current California Building Code. In Palo Alto, this is the path that requires a building permit when the opening, header, or door size changes. Our written quote includes the permit, the inspection, and the re-framing. You are not paying a “permit surprise” at the end.

Insert Replacement
An insert or pocket replacement fits a new door into the existing frame. It costs less, often $1,800 – $3,200, and works when the existing jamb is square, dry, and in good condition. But if the opening is out of square, which we see a lot in Barron Park and parts of South Palo Alto, an insert will bind or leave gaps. We measure the opening at three points on every side before we recommend an insert. If it is off, we tell you straight and quote the full-frame path instead.
Trusted Brands We Service in Palo Alto
We stock and install patio doors from CGI, ES Windows, and Therma-Tru, among the eight manufacturer lines in our portfolio. CGI and ES Windows are Florida and California product lines respectively, built around high design pressure ratings, which matters when the Palo Alto inspector asks about wind load at the door’s location. Therma-Tru gives us a fiberglass door line that resists the swelling and rot we see in older wood frames around Barron Park and Crescent Park. Because we are authorized for these lines, we can cut new frames to the exact rough opening and call in the right unit the first time. We keep the common hardware and weatherstripping parts stocked for Palo Alto service calls, so a roller repair or threshold reseal does not turn into a two-week wait on a backordered part.
Common Patio Door Installation Problems We See in Palo Alto Homes
Here are the four failures we deal with most often when we show up to scope a patio door job in Palo Alto:
- No permit on an opening change. A homeowner replaces a patio door that changes the rough opening, header, or door size without pulling a Palo Alto building permit. The city issues a stop-work order, and the homeowner pays for re-inspection after unpermitted work is checked. We pull the permit as part of every quote where it applies.
- Reused flashing and sill pan. The existing flashing or sill pan gets left in place during a patio door replacement. It fails within a year because the old metal has corroded or the original pan was installed under a less strict code. In Palo Alto’s older wood-frame homes, this is how jambs rot. Flashing and sill pan replacement is standard on our full-frame installations.
- Stock-size door on an out-of-square opening. Someone orders a stock 72-by-80 patio door for a pre-1950 home in Professorville or Crescent Park without field-verifying the opening. The door arrives, does not fit, and the quote dies. We measure every opening at three points before we order anything.
- Irrigation runoff at the threshold. In neighborhoods like Barron Park, where older landscaping sits close to the house, sprinkler heads pointed at the patio door soak the threshold and the bottom of the jamb. The wood rots, the sill pan rusts, and the door starts leaking. We check the runoff pattern during the estimate and flag it in the written quote, because flashing will not save a door that is being watered like a planter box.
Pricing for Patio Door Installation in Palo Alto, CA
Here is what we actually charge in Palo Alto, based on the jobs we have quoted across the city in the past year:
- Sliding door roller and track repair: $180 – $450
- Lock set replacement: $120 – $250 installed
- Weatherstripping and threshold reseal: $150 – $350
- Insert patio door replacement (existing frame is square and dry): $1,800 – $3,200
- Full-frame patio door replacement with new flashing and sill pan: $2,800 – $5,500
- Full-frame replacement with header re-framing and permit inspection: $4,500 – $7,500
What moves the price in Palo Alto is the rough opening. If it is out of square, re-framing adds labor and material. If the header is undersized for the new door’s width, we engineer and install a new one. If the home is in a historic review district, the city’s design review adds processing time, not necessarily cost, but it stretches the calendar. Every quote we write is a fixed price. It goes on paper before work starts and it does not move at the door. Call (817) 686-2228 for a free estimate on your Palo Alto patio door.
We Also Serve Cities Near Palo Alto
Our crews serve Palo Alto and the surrounding communities, including Stanford, Menlo Park, Atherton, and Los Altos. If you are just across the city line, Patio Door Installation is available by the same crew, same pricing process, same written guarantee. Call (817) 686-2228 and we will schedule a measure at your home.
Serving Palo Alto, CA - Our Local Coverage Area
We’re based in the Palo Alto 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 Patio Door Installation in Palo Alto
Yes, if the replacement changes the door’s size, header, or wall opening, Palo Alto requires a building permit with a final inspection. A like-for-like insert into an existing square frame typically does not require a permit, but the moment we touch the rough opening or the header, we pull the permit as part of the written quote. Call (817) 686-2228 and we will tell you which path applies to your home before you spend anything.
Plan on 3 – 7 days from written quote to final inspection for a typical Palo Alto patio door replacement. The permit application and city review typically add two to five business days. The installation itself is usually a one-day job, and the inspection is scheduled for the day after. If the home is in a historic review district, add a few more days for design review. We will give you a calendar in the written quote, not a vague “soon.” Call (817) 686-2228 for a schedule on your specific project.
We install patio doors from CGI, ES Windows, and Therma-Tru, among the eight manufacturer lines in our portfolio. We are authorized for all three, which means we order the unit to your exact rough opening and back it with a written installation guarantee. The brand that gets spec’d depends on the design pressure rating your location requires and the frame condition we find at the measure. Call (817) 686-2228 and we will tell you which door fits your Palo Alto home and why.
Because the big-box quote is usually for the door only, not the installation, the permit, the flashing, or the re-framing. A Palo Alto home built before 1950 often has an out-of-square rough opening that requires field re-framing, and a big-box installer will typically walk away from that or charge a change order at the door. Our written quote includes the full-frame work, the sill pan, the flashing, the permit, and the inspection. The number on the page is the number you pay. Call (817) 686-2228 for a fixed quote, not an estimate with asterisks.
Design pressure, or DP, is the rated wind load and water penetration resistance a door is built to withstand. Palo Alto’s building inspectors check the door’s DP rating against the exposure at your specific location, and a door with too low of a DP rating fails inspection. Brands like CGI and ES Windows build doors designed for coastal and high-wind exposures, which is why we carry them. We spec the DP rating your door needs before we order it, because ordering the wrong one is how you fail an inspection and wait two more weeks for a reorder. Call (817) 686-2228 to get your Palo Alto patio door measured and priced.
Written by Elliot Vance, Owner at Meridian Windows & Doors, serving Palo Alto since the company’s founding in 2009.










Before
After
Before
After
Before
After