Backup offers: how to structure, hold, and use them

What a backup offer is and isn’t

A backup offer is a complete, signed offer that the seller accepts in second position. It sits behind the accepted contract and becomes the contract only if the first deal ends, under the terms of a backup addendum both parties sign.

It isn’t a promise to consider the buyer later, a verbal “let us know if anything changes,” or a way to keep negotiating with the first buyer. And it isn’t free for the backup buyer: while they wait, they may be passing on other homes, so the hold needs to be clear and fair to them too.

The addendum and hold period

Most state associations and many brokerages have a backup addendum; use yours rather than writing your own. Whatever the form, it should answer these questions in writing:

• Position: first backup, second backup, and so on.
• How it becomes primary: usually written notice from the seller that the first contract has ended.
• When the clock starts: the backup’s deadlines (earnest money, inspection, financing, closing) usually run from that notice, not from the day it was signed.
• How long the hold lasts: a set date, or until the first contract closes or ends. Pick one and write it down.
• Whether the backup buyer can withdraw before it becomes primary, and how.
• Earnest money: whether it’s deposited now or only when the backup becomes primary.

Standard of Practice 1-7 of the REALTOR® Code of Ethics says listing agents should recommend that sellers get legal advice before accepting a later offer, except where acceptance is contingent on the first contract ending. A proper backup addendum is exactly that kind of contingent acceptance, which is one more reason to use one.

Source: NAR 2026 Code of Ethics and Standards of Practice.

Backup offers and kick-out clauses

A backup offer is sometimes confused with a kick-out clause. They solve different problems. A backup offer sits behind an accepted contract and steps in if that contract ends. A kick-out clause (sometimes called a right of first refusal) goes in the first contract itself, usually when the first buyer needs to sell their own home: the seller keeps marketing, and if a better offer arrives, the first buyer gets a set time to remove their home-sale contingency or step aside.

The two can work together. A seller who accepts an offer with a home-sale contingency and a kick-out clause may take a backup as well, knowing the backup can move up if the first buyer steps aside.

Ranking multiple backups

You can hold more than one backup, in order. Rank them the way you ranked the offers in the first place: by what the seller would net and how likely the deal is to close. That usually means the strongest financing and fewest contingencies rise, even above a slightly higher price. The offer summary sheet sorts offers by net and rates their risk, which makes the ranking easy to explain.

Put the ranking and the reason for it in the file, so anyone reviewing it later can see why each buyer landed where they did.

Tell each backup buyer their position, and tell them when it changes. If the first backup withdraws, the second becomes first; if the first contract ends, the first backup becomes primary and the others move up.

What to tell the backup buyer

A backup buyer needs honest, regular updates, not false hope. When you ask for the backup, tell their agent the position, how the hold works and when it ends, all in writing. Our backup offer request template covers it.

Then keep them informed at the milestones that matter: when inspection and financing contingencies are removed on the first contract (the backup’s chances drop sharply), and immediately if the first contract ends. Don’t share the first contract’s terms or problems beyond what the seller has authorized, and don’t hint at trouble to keep them waiting.

When the first deal ends, step by step

1. Get the termination in writing. A signed release or termination of the first contract, with the earnest money handled as the contract says. Don’t move the backup up on a phone call.
2. Send the backup written notice in the form the addendum requires. The backup’s deadlines usually start from that notice, so date it.
3. Collect the earnest money if it wasn’t deposited at signing, and restart the inspection and financing clocks.
4. Tell the other backups that their position has moved up, if you’re holding more than one.
5. Update the file with the release, the notice and the new timeline.

The backup buyer’s side

Agreeing to be a backup costs a buyer something: time, attention, and sometimes other homes they pass on. Buyer’s agents should make sure their client understands that most backups never become primary, that they can usually keep looking at other homes, and what the addendum says about withdrawing. A buyer who finds another home should withdraw from the backup in writing before making a new offer, so they aren’t bound to two homes at once.

Listing agents who remember this get better backups: a clear, fair addendum and honest updates keep the backup buyer from quietly moving on.

What a backup is worth to the seller

The obvious value is time: if the first deal falls apart, the seller doesn’t go back on the market, lose momentum and field questions about why the last buyer walked away. There’s a quieter value too. A seller who knows a backup is waiting negotiates repairs and appraisal gaps from a calmer place, and calm sellers make better decisions.

That value fades as the first deal moves forward. Once the first buyer has removed their inspection and financing contingencies, the chance they’ll walk away drops, and the backup matters less. Tell the seller that, so they don’t overestimate what the backup is worth.

Ethics and disclosure

• Never use a backup to pressure the first buyer. “We have another buyer waiting” as a negotiating lever during repairs or the appraisal invites complaints and can sour a deal that would have closed.
• Present backup offers promptly. The Code requires listing agents to keep submitting offers to the seller until closing, unless the seller has waived that in writing.
• Treat every buyer the same. If you ask one runner-up to be a backup, offer the same chance to the others the seller would accept.
• Disclose what the seller authorizes, and nothing else. The backup buyer is a party you owe honesty to, but not the seller’s confidential information.

How often deals fall through

NAR’s monthly survey of REALTORS® has recently found 5% to 7% of contracts terminated over the prior three months, and a similar share delayed by appraisal issues. That’s roughly one deal in fifteen to twenty ending before closing.

A backup costs little to set up when you already have several offers. The odds you’ll need it are modest; the cost of not having one when you do is starting over.

Source: NAR REALTORS® Confidence Index, monthly surveys.

How ranked backups work in an offer round

In an offer round on BindingOffers, every offer is already signed and timestamped, so the backups are sitting in front of the seller when they choose. The agent records the seller’s choice and ranks the backups in order, and each backup buyer confirms their hold from their own link. When a backup is needed, the agent knows who’s next, and the record shows how the order was set.

Questions