How to Price a Window Replacement Job | Reddit & LinkedIn
Short answer
Knowing how to price a window replacement job starts with counting and measuring each opening, choosing insert or full-frame replacement and the window line, then pricing units, trim, flashing, disposal, and labor per opening. Frame condition, custom sizes, and trim work drive the cost. Add your markup and present one signable quote.
- Measure and price every opening individually. Averages hide the oddball windows.
- Insert versus full-frame is the biggest scope and price decision.
- Rotted or out-of-square frames turn a simple swap into carpentry.
- Interior and exterior trim and finish work are easy to underbid.
- Add markup on cost, plus a contingency for hidden rot behind the trim.
What goes into a window replacement quote?
A window replacement quote has five cost buckets: the window units, trim and flashing material, removal and disposal, finish carpentry, and labor. The units are the obvious line, but trim, flashing, and finish work are where tight bids lose money because they are easy to eyeball and underprice.
Price each opening as its own line rather than a per-window average. A house with ten standard double-hungs and two custom arched windows is not twelve identical units, and a line-item quote keeps the oddball openings from eating your margin.
How do you measure windows for a quote?
Measure the width, height, and square of every opening, and note the interior finish, exterior cladding, and whether any bedroom window must meet egress size. Measuring each opening prevents the expensive mistake of ordering a stock size that does not fit a slightly racked frame.
Also flag second-story and hard-access openings. They take longer, need more setup, and sometimes require staging, so they should carry more labor than a ground-floor swap you can reach from a short ladder.
How do insert and full-frame replacements differ in price?
An insert, or pocket, replacement sets a new window into the existing frame and is faster and cheaper when the frame is sound. A full-frame replacement removes the window down to the rough opening and is required when the frame is rotted, out of square, or you are changing size.
Decide per opening, because one job can need both. Quoting every opening as a cheap insert and then discovering rot on install day is how you end up doing unpaid carpentry. Inspect, and price the frame condition you actually find.
How much should you mark up a window job?
Window and remodeling markup for a small contractor commonly runs 18% to 30% on top of direct cost, but your overhead and target profit set the real number. Remember markup is not margin: a 25% markup is a 20% margin, so price from the margin you need to keep.
Build in a contingency for hidden rot behind the trim and siding. It is common enough that pricing a small allowance, or a clear unit rate for sill and jamb repair, is more honest than surprising the client with a change order on install day.
How can software speed up a window quote?
The fastest path to a signed quote is to draft against your own templates. ContractShield lets you photograph each opening, say or type the counts and sizes, and get an AI draft of units, trim, flashing, and labor priced per opening in about 25 minutes total. You approve each line, and every line shows where its price came from.
Once the client accepts online, milestone payments and automatic reminders are built in, and Collections handles any past-due balance so the finished job actually turns into cash.
Frequently asked questions
Should I measure every window or use an average?
Measure and price every opening. Averages hide custom sizes, egress windows, and hard-access openings that cost more, and ordering by a wrong stock size is an expensive mistake.
What is the difference between insert and full-frame?
An insert sets a new window into a sound existing frame and is cheaper. A full-frame replacement goes to the rough opening and is needed when the frame is rotted, out of square, or resized.
What drives window job cost the most?
The window line and glass package, insert versus full-frame scope, trim and finish work, access height, and any hidden frame rot you find on removal.
How much markup should I add?
Many small contractors run an 18% to 30% markup on window work, but set yours from your own overhead and target profit. Markup is not margin: a 25% markup is a 20% margin.
Can ContractShield quote a window job for me?
Yes. Photograph the openings, describe counts and sizes, and the AI drafts units, trim, flashing, and labor per opening from your templates in about 25 minutes. You approve each line.
How long does a window replacement job take?
Simple insert swaps can run several openings a day, while full-frame replacements with trim and finish work take longer per opening. Price by opening and access, not a flat per-window day rate.
Quote, run, and get paid on one platform
ContractShield: build an AI quote in about 25 minutes, run the job from the truck, and collect on milestones.
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