Is a signed quote legally binding?

Why signing a quote usually creates a contract

A contract needs mutual assent — an offer and an acceptance — plus consideration, meaning something of value exchanged, along with parties who have capacity and a lawful purpose. A quote supplies the offer: New Zealand's Consumer Protection describes it as an offer to do a job for a specified price. Your signature, an email reply or a click on an Accept button supplies the acceptance, and the work in exchange for the price is the consideration.

So the signature itself isn't magic. An unsigned quote accepted by a clear email can be just as binding, and a signed quote can fail to become a contract if your “acceptance” changed the terms. In contract law a reply that materially changes the offer is a counteroffer, which rejects the original quote.

What a signed quote usually commits each side to

The business: to do the work described, for the quoted price, on the stated terms — extra charges only for changes you agree to.

You: to pay the price on the agreed schedule and let the work go ahead. Backing out later can cost money.

Both of you: to handle changes in writing. Anything outside the described work needs a new agreement, usually a change order.

What the business is bound to

Once you accept a quote, the business generally can't raise the price for the same work. New Zealand's Consumer Protection says the provider can't charge more than an accepted quote unless you agree to extra work or the scope changes. Citizens Advice in the UK says a trader can't charge more than they quoted unless there is a good reason — such as extra work you agreed to pay for, or a price mistake so obvious that most people would notice it — and that rising costs since the quote aren't a reason.

The protection covers what the quote describes. Exclusions, allowances and conditions (“subject to site survey”) are part of the deal too, which is why they are worth reading before you sign.

What you are bound to — and when you can still cancel

You are generally committed to letting the work go ahead and paying for it on the agreed terms. Cancelling a contract without a legal right to do so can be costly: Citizens Advice notes that for a contract made at the trader's premises, the trader may ask for a cancellation fee or the profit they lose, for example if they kept the time free for your job.

Some sales come with a cooling-off period. In the US, the FTC's Cooling-Off Rule gives you until midnight of the third business day to cancel many sales made at your home (from $25) or at temporary locations such as fairs (from $130); it doesn't cover sales finished after negotiations at the seller's permanent place of business. In the UK, work agreed away from the trader's premises, online or by phone generally has a 14-day cooling-off period; if you asked for work to start during those 14 days you pay for the part already provided, and if the trader never gave you the cancellation information, the period can extend by up to a year. In Ontario, a home renovation or repair contract of $50 or more signed in your home can be cancelled within 10 calendar days.

Signed estimates

A signed estimate is usually binding too, but what binds you is the work and the way the price is worked out, not a fixed total. Consumer rules limit the drift in some places: in Ontario a consumer can't be billed more than 10% above an estimate without agreeing in writing, and in the UK the final price for estimated work should be reasonable. The practical protection is a written ceiling next to your signature.

Does it matter that the signature was electronic?

In most situations, no. The US E-SIGN Act (15 U.S.C. § 7001) stops a contract from losing its validity merely because it was formed with an electronic signature. Article 25 of the EU's eIDAS Regulation gives the same protection to electronic signatures that aren't of the qualified kind. English and Welsh law reached a similar place in a 2019 Law Commission report: e-signing a document is a valid way to execute it, provided the person means it to authenticate the document and any required formalities, such as a witness, are followed. Signing a quote on this site produces a simple electronic signature. If a dispute ever arises, the argument is almost always about what the quote promised and whether you agreed to it — not about whether the signature was drawn with a pen or a finger.

Sources

• Cornell Law School, Wex: Contract
• Cornell Law School, Wex: Counteroffer
• Cornell Law School, Wex: Offer
• Consumer Protection (New Zealand): Quotes and estimates
• Citizens Advice: Problem with building work, decorating or home improvements
• Citizens Advice: Cancelling building or decorating work
• FTC: Buyer's remorse — the FTC's Cooling-Off Rule
• Ontario: Your rights when starting home renovations or repairs
• Ontario: Business guide to consumer protection — estimates
• 15 U.S. Code § 7001 (E-SIGN Act)
• Regulation (EU) No 910/2014 (eIDAS), Article 25
• Law Commission: Electronic execution of documents