Single hung
Double hung
Horizontal roller
Casement
Bay & bow
Sliding glass doors
Entry doors
Impact garage doors
PGT
CGIFree in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Get your free estimateWindows & Doors Specials in San Francisco, CA
Lightwell Windows San Francisco runs a small, honest set of offers throughout the year, and the best way to know exactly what applies to your job is to call (831) 480-4124 and ask. We’re not a coupon factory; we’re a local window and door company that would rather put the savings into the work itself. Keith Yamada, Owner, sets the offers based on what San Francisco homeowners actually ask for: clarity on pricing, a clean job site, and no games at the end of the bill.
Current Offers
Free In-Home Estimate with Written Line-Item Price
Every Lightwell Windows San Francisco job starts with a free estimate, and the price you get is the price on the invoice. No change orders, no “while we were in there” surprises. The written quote covers the full scope, from window removal to the final wipe-down of the sill. Valid through March 31, 2027. Mention this offer when you call (831) 480-4124.
Standing San Francisco Courtesy: Senior & Military Savings
We keep a standing courtesy for San Francisco seniors and active or retired military on window replacement and door installation. Mention it before the estimate and we’ll note the savings right on the written quote, item by item, so the math is plain. It applies to any PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, or ViewLux product we install. Valid through March 31, 2027. Mention this offer when you call (831) 480-4124.
Seasonal Window & Door Tune-Up Check
San Francisco fog finds every gap, and spring is when we see the most callbacks for windows that were installed by someone else and never quite sealed right. Book a seasonal tune-up and we’ll inspect existing windows and doors, check weatherstripping and hardware, and give you a straight answer on whether replacement or a small repair makes more sense. The inspection itself is free with any estimate. Valid through March 31, 2027. Mention this offer when you call (831) 480-4124.
First-Time Customer Welcome Discount
If you’ve never worked with Lightwell Windows San Francisco before, ask about the first-time customer courtesy when you schedule your estimate. It’s our way of making the first job easy to say yes to, and it applies to both window replacement and door installation across all eight brands we carry. The discount shows up on your written quote before any work begins. Valid through March 31, 2027. Mention this offer when you call (831) 480-4124.
365-Day Done Right Promise on Every Offer
This one isn’t a discount; it’s the reason the discounts mean something. If the finished work is not right, Lightwell makes it right – no debate, no countdown. Every offer on this page is backed by that promise, stamped on every job from a single window in Noe Valley to a full door replacement in the Outer Sunset. That’s how Keith Yamada runs it. Valid through March 31, 2027. Mention this offer when you call (831) 480-4124.
Styles & brands we work with










How to Redeem
Call (831) 480-4124 and tell the live person who answers which offer applies to your San Francisco home. We’ll book the visit, confirm the details, and note the offer on your file before anyone arrives. When the technician shows up in uniform, just mention it again and it’ll be honored on the written quote. That’s it: three steps, no forms, no promo codes, no fine print beyond what you see on this page.
See the difference
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AfterWhat These Offers Are Really About
A light well is what brings daylight deep into a building – that is what a well-installed window should do for your home. In San Francisco, where the marine layer rolls in most evenings and west-facing windows in the Richmond and Sunset take the brunt of it, the difference between a good install and a rushed one shows up within a season. Our offers exist so San Francisco homeowners can afford to choose the good one. The C.A.R.E. values still apply on every discounted job: Clean up like it is our own home, Ask before we move or touch anything, Respect the family’s time and quiet hours, and Explain the price before the work. Shoe covers and drop cloths go down on every visit. A photo of the clean-up is taken before the crew leaves. Pet-safe products are used wherever there is a choice. Kids’ nap schedules are respected with quiet tools when the job allows. The price you’re quoted is the price you pay, and if it’s not right, the 365-Day Done Right Promise is how we make it right.
Which Offer Fits Your San Francisco Home?
If you’re in a Victorian in the Mission with original double-hungs that rattle when the trolley buses pass, start with the free estimate and the first-time customer discount. If you’re in a mid-century in Diamond Heights with aluminum frames that sweat in the fog, ask about the seasonal tune-up check first – we’ll tell you honestly if replacement is worth it. If you’re a senior in Bernal Heights or a veteran in the Excelsior, the courtesy savings apply to any window or door we install. Call (831) 480-4124 and we’ll walk you through which offer makes sense, and put the numbers in writing before you commit to anything.
Written by Keith Yamada, Owner at Lightwell Windows San Francisco, serving San Francisco since 2010.
Six Reasons Homeowners Choose Lightwell Windows San Francisco
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.