Replacing windows runs $450 to $1,600 per window installed in 2026, which puts a typical full-home job of 15 windows somewhere between $8,000 and $24,000. That's a wide spread, and it's not marketing fluff — the difference between the low end and the high end comes down to real, identifiable choices you'll make (or that your home will make for you).
Most homeowners land in the middle: a standard vinyl double-hung replacement in a home with sound existing frames typically runs $650 to $900 per window installed. The extremes on either side are where the confusion starts, so let's break down exactly what pushes your number up or down.
Frame Material Is the Biggest Lever
Frame material alone can double your per-window cost. Vinyl sits at the bottom at $450 to $900 installed — it's durable, low-maintenance, and by far the most common choice. Fiberglass runs $700 to $1,200 because it's stronger and holds paint better. Wood and wood-clad windows push $900 to $1,600+, both because the material costs more and because they demand more skilled installation.
If someone quotes you $1,400 a window for vinyl, that's a red flag worth questioning. If they quote you $500 for wood-clad, something's wrong — either the material or the install corner is being cut.
Glass Package and Openings
The glass itself moves the number more than people expect. A basic double-pane unit is baseline. Triple-pane, low-E coatings, argon or krypton gas fills, and impact-rated glass (common in hurricane and coastal zones) each add $100 to $400 per window. If you live somewhere with extreme temperatures or storm codes, you may not have a choice.
Then there's the opening. A straight 'insert' replacement — where your existing frame is sound and the new window drops in — is the cheap path. A 'full-frame' replacement, where rotted framing, water damage, or resizing means the crew has to tear back to the studs, adds $200 to $600 per opening in labor and materials. You often don't know which you need until a contractor pulls the trim.
Half the quotes I see swing wildly because one contractor assumed insert replacement and the other priced full-frame. Same house, very different number.— Residential window installer, 14 years
Region, Permits, and Labor Market
Where you live changes everything. Labor in a major metro on the coasts can run 40% to 60% higher than in a smaller inland market. Permitting adds $50 to $500 depending on your municipality, and some jurisdictions require inspections that stretch the timeline and add cost.
Speaking of timeline: a standard 15-window job takes one to three days of actual install once materials arrive. The real wait is ordering — custom-sized or specialty windows can take four to eight weeks to manufacture. Plan for the calendar, not just the crew.
Getting a Number You Can Trust
The honest answer is that no online calculator can price your job accurately, because your frames, your glass code, and your local labor market all live at your specific address. The best move is to get two or three itemized quotes that spell out material, glass package, and whether they're pricing insert or full-frame — then compare apples to apples.
And when the money changes hands, structure it so you're protected. Paying into escrow that releases as work is completed keeps both you and the contractor honest, especially on a multi-week job with a big deposit up front.