Money
What it costs, and what moves the number
Nobody can quote a window without seeing the opening. What can be said beforehand is the range, and which four things decide where inside it you land.
The ranges
Industry figures for 2026 put a single replacement window, fitted, in the region of $700 to $1,200, and a whole house somewhere between $8,000 and $15,000. Both spans are wide because they cover everything from a small vinyl slider in a bedroom to a bay unit that carries part of the wall.
Resale figures are steadier than that. The annual Cost vs Value report has vinyl window replacement recouping roughly two thirds to three quarters of its cost at sale, which is high for a project that also lowers a bill while you live there.
Treat all of this as a range to sanity-check a quote against, not as a quote. An estimate that comes in far below it is usually quoting a different job.
What actually moves the price
Insert or full frame. An insert goes inside the existing frame and keeps the trim; a full-frame replacement takes everything back to the rough opening. The second costs substantially more and is the only option when the frame has rot, which is a thing found on the day, not guessed at beforehand.
What the label has to say. A window certified for a cold zone and one certified for a hot zone are different products at different prices, and the requirement is set by where the house is, not by preference.
Coastal requirements. Where a code calls for impact-rated glazing, the same opening costs appreciably more, and in the two Florida counties with the strictest standard the product itself has to carry a specific approval.
The age of the house. Anything built before 1978 brings the federal lead rule with it: the firm has to be certified, and the containment and cleanup that rule requires take time that appears on the invoice.
Why one number for "windows" is not a quote
A quote worth comparing is itemised by opening, names the product line, and states the U-factor and solar heat gain for each unit. Two single-line totals cannot be compared with each other at all — they may not even describe the same work.
What happens at the measurement
- 01
Measuring, every opening
Inside and out. A house settles, and by the end no two openings are the same width — which is why a quote given without measuring is a guess.
- 02
What is behind the trim
Rot at the sill, a dropped header, aluminium wrap over wet wood. Found now it is a line on the quote; found on installation day it is a change order.
- 03
The numbers, written down
U-factor and solar heat gain for your climate zone, per unit, on the paperwork. Both are certified by the NFRC and printed on the glass, so both can be checked afterwards.
- 04
Itemised by opening
With the product line named. A single total for "windows" cannot be compared with a second quote, because the two may not describe the same work.
- 05
What happens if the price changes
Ask before signing, not after: what triggers a change order, and whether the quoted price holds if the measurement finds rot. This is the most common reason a number moves.
- 06
Who pulls the permit
And whether its cost is inside the quote. A permit taken out in the homeowner’s name puts the compliance on the homeowner.