Built for window and door installers

Window and door estimates your customers sign from their phone.

Type the openings the way you would text them. BidWriter Pro turns it into a clean estimate the customer signs and pays a deposit on, so you can place the order.

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Legally binding e-signature
Flat $29/month
Deposit by card at signing
Sample window and door installer proposal

What your customer sees from the notes above.

Only what you typed, cleaned up and laid out. Nothing gets added that you didn't say.

Mike's Windows and Doors LLC
Proposal #2474 · September 13, 2026
Prepared for Gloria Patel
Scope of work
• 8 vinyl double-hung insert replacements, white, low-E argon glass.
• 1 patio slider, 6 feet.
• Remove and haul the old units.
• Interior caulk and touch-up, exterior capping.
• Lead time 4 to 6 weeks after deposit.
Total
$8,400
Timeline
2 days on site, after the order arrives
Payment
50% upfront, 50% on completion
Warranty: 2 years on workmanship, manufacturer warranty on units · Deposit at signing: $4,200
Type your full name to accept this proposal. This is a legally binding electronic signature.
Full name
Accept and pay $4,200 deposit

Common headaches for window and door installers, and what this does about them

1

Orders waiting on a deposit check in the mail

The deposit is paid by card when they sign, so the money is down before you buy anything or put them on the schedule. Taking checks or Venmo instead works too.

2

Customers who thought the trim was included

Type it rough on your phone. It comes out as a proposal in about two minutes, with your company name, terms, and warranty already on it.

3

Writing eight openings out by hand every time

Your terms, warranty, and fine print are saved once and go on every bid. Save the jobs you do often and start the next one from there.

What to spell out on a window and door installer bid

Useful whatever you write your bids in. These are the lines that keep a job from turning into an argument.

Put it in writing
  • Count, size, style, and glass package for each opening
  • Full-frame versus insert, and what happens to the trim and the siding
  • Lead time, and that the order is placed when the deposit clears
  • Haul-off of the old units and interior touch-up
Common jobs
Window replacementEntry door installPatio sliderStorm doorWindow repair and glass

Lead times on custom windows are long and the deposit is what starts the clock. Say that on the bid so nobody is surprised at week six.

Free windows and doors proposal template · How much deposit to ask for · Four finished windows and doors estimates · Job price calculator · How to follow up on an estimate · Options on one estimate · Deposit calculator

Questions from window and door installers

Before you sign up.

Can I put the lead time on the estimate?

Yes. It goes in the timeline, and the deposit date is on the signed copy, so the clock is in writing.

Can I list each window separately?

Yes. One line per opening in the scope. The price stays one number at the bottom.

Is the signature legally binding?

Yes. The customer types their full name and clicks Accept, and we record the name, date, time, and the exact proposal they agreed to. That meets the U.S. E-SIGN Act, the same law behind DocuSign.

Does my customer need an app?

No. They tap the link in your text or email, the proposal opens in their phone's browser, they read it and sign.

Does it change what I wrote?

It fixes spelling and lays your notes out cleanly. It does not add scope, exclusions, or promises you didn't make.

What does it cost?

$29 a month, flat. Unlimited proposals. Your first 30 days are free with no card, and you can cancel anytime.

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