Window Installer Estimate Template
A window installer estimate forecasts the price before work starts: 8 lines for replace eight double-hung windows and one sliding patio door, totalling $8,540.00, with products the largest share (59%). It states its assumptions and stays valid for 30 days. Edit the lines and download the PDF.
Pre-filled for a window installer: replace eight double-hung windows and one sliding patio door. Example prices: replace them with your own.
From
Summit Window Installation
244 Market Street
Springfield, IL 62704
billing@example.com
(615) 555-0144
Estimate
Prepared for
Casey Nguyen
27 Birch Avenue
Georgetown, TX 78626
client@example.com
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Vinyl double-hung window, low-E, argon-filled | 8 each | $425.00 | $3,400.00 |
| Insert installation, double-hung | 8 each | $175.00 | $1,400.00 |
| Sliding patio door, 6 ft, low-E glass | 1 each | $1,650.00 | $1,650.00 |
| Full-frame patio door installation | 1 each | $650.00 | $650.00 |
| Exterior aluminum trim capping | 9 each | $95.00 | $855.00 |
| Interior stops, foam and caulk | 9 each | $30.00 | $270.00 |
| Lead-safe setup, pre-1978 home | 1 each | $180.00 | $180.00 |
| Disposal of old windows | 9 each | $15.00 | $135.00 |
- Subtotal
- $8,540.00
- Estimate total
- $8,540.00
Notes
A window estimate should list every opening with size, style, glass package and energy rating, the installation method, trim work and disposal of the old units.
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Window Installer estimate at a glance
| Scope estimated | Replace eight double-hung windows and one sliding patio door |
|---|---|
| Estimate total | $8,540.00 before tax |
| Valid for | 30 days from the estimate date |
| Deposit on acceptance (50%) | $4,270.00 |
| Products (2 lines) | $5,050.00, 59% |
| Labour (2 lines) | $2,050.00, 24% |
| Services (2 lines) | $1,035.00, 12% |
| Priced in | each |
Estimate breakdown for replace eight double-hung windows and one sliding patio door
| Item | Type | Est. quantity | Est. amount |
|---|---|---|---|
| Vinyl double-hung window, low-E, argon-filled | Products | 8 each | $3,400.00 |
| Insert installation, double-hung | Labour | 8 each | $1,400.00 |
| Sliding patio door, 6 ft, low-E glass | Products | 1 each | $1,650.00 |
| Full-frame patio door installation | Labour | 1 each | $650.00 |
| Exterior aluminum trim capping | Services | 9 each | $855.00 |
| Interior stops, foam and caulk | Materials | 9 each | $270.00 |
| Lead-safe setup, pre-1978 home | Services | 1 each | $180.00 |
| Disposal of old windows | Fees | 9 each | $135.00 |
| Estimated total | $8,540.00 |
What to write on a window installer estimate
A window estimate should list every opening with size, style, glass package and energy rating, the installation method, trim work and disposal of the old units.
Materials and products are $5,320.00 of this $8,540.00 estimate (62%), so say how long those prices hold: supplier prices can move before the job starts.
Prices replacement windows per opening by size and type, with the installation method, exterior trim and disposal itemized.
Assumptions behind each line
Write these next to the 8 lines so the customer sees what the $8,540.00 depends on.
- Vinyl double-hung window, low-E, argon-filled: 8 each at $425.00 ($3,400.00); another grade or brand changes this line.
- Insert installation, double-hung: 8 each at $175.00 per each ($1,400.00); extra each at the same rate.
- Sliding patio door, 6 ft, low-E glass: 1 each at $1,650.00 ($1,650.00); another grade or brand changes this line.
- Full-frame patio door installation: 1 each at $650.00 per each ($650.00); extra each at the same rate.
- Exterior aluminum trim capping: 9 each, $855.00.
- Interior stops, foam and caulk: 9 each at $30.00 ($270.00); another grade or brand changes this line.
- Lead-safe setup, pre-1978 home: 1 each, $180.00.
- Disposal of old windows: a flat $135.00.
Changes, overruns and change orders
If the customer adds work, put it on a signed change order first. Pricing the extra in each keeps it comparable with the $8,540.00 you estimated.
A 10% rise in material prices would add $532.00 to this job, which is why many window installers limit how long an estimate stays valid.
Tips from window replacement billing
- Print each unit's U-factor and solar heat gain coefficient, because energy tax credits and utility rebates often require them together with the product label.
- Say whether each opening was an insert or a full-frame replacement; the labor and the finished result differ, and owners comparing quotes need to know which they received.
- Made-to-measure units cannot be returned, so put the order date and a reference to the signed measurement sheet on the invoice in case a size is later questioned.
- List interior trim, painting or drywall repair as separate or excluded items, since a full-frame replacement often disturbs finished walls around the opening.
Turning the window installer estimate into an invoice
-
Get it approved
Ask Casey Nguyen to sign or reply in writing to estimate EST-6391.
-
Record the changes
Update quantities to what was actually used across the 8 lines.
-
Switch the document type
Change Estimate to Invoice in the tool; the lines and parties stay.
-
Deduct what was paid
Enter the $4,270.00 deposit as amount paid so the balance shows $4,270.00.
Frequently asked questions
How do I write a window installer estimate?
Describe the job (Replace eight double-hung windows and one sliding patio door), list each line with an estimated quantity and rate, total it ($8,540.00 in the sample), state how long it is valid and what it assumes, then send it as a PDF for approval.
Is a window installer estimate binding?
An estimate is a forecast, not a fixed price, so the final invoice can differ when the work or materials change. Rules vary by country and state; to stay safe, get written approval before billing noticeably more than the $8,540.00 you estimated.
How long should a window installer estimate be valid?
Thirty days is common and is what this template uses. With 62% of the price in materials, a shorter validity protects you if supplier prices rise.