By Prerna Kapoor, CLHMS | REAL Brokerage | June 29, 2026
A seller in Highlands Ranch accepts a solid offer on a Friday. By Monday, two more buyers who toured the home that weekend call their agents wanting in. The seller’s first reaction is usually disappointment, then a question: is there anything I can do with these other buyers, or did I just miss my best shot?
The answer in Colorado is yes, and it has a name: the backup offer. It is one of the most underused tools in a contract, and right now, with Denver-area inventory still running higher than it was a year ago and more buyers touring multiple homes before committing, backup offers are showing up more often than they used to.
When a Backup Offer Makes Sense
A backup offer is exactly what it sounds like: a fully negotiated, signed contract that sits behind the primary contract and only takes effect if the primary deal collapses. It is not a bidding war and it does not pressure the buyer who is already under contract. The seller keeps performing on the active deal, and the backup buyer waits.
Sellers should consider one any time a second strong buyer surfaces after they are already under contract, especially if the primary buyer’s financing, appraisal, or inspection contingencies are still open. Those open contingencies are exactly where deals fall apart, and a backup offer means a fall-through does not send the seller back to square one. For a fuller picture of how often that happens and why, see our guide to Colorado home sales falling through.
How Colorado’s Backup Offer Addendum Works
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Colorado uses a standard form for this, the Notice of Buyer’s Termination or Contract Status, alongside a Backup Contract addendum that the Colorado Real Estate Commission attaches to the standard Contract to Buy and Sell. The backup contract has its own dates, its own deadlines, and its own contingencies; it does not simply copy the terms of the first contract. The backup buyer’s inspection and financing clocks do not start until the seller delivers written notice that the primary contract has terminated.
This matters because it protects the backup buyer from being locked into deadlines for a property they may never close on, and it protects the seller from a backup buyer who tries to walk after activation citing a contingency that should have already passed. If you are unfamiliar with how contingency timing generally works in a Colorado contract, our Colorado real estate contract guide walks through the standard deadlines line by line.
What Happens If the Primary Contract Falls Through
The moment the primary buyer terminates, walks on an appraisal gap, or fails to perform, the seller sends written notice to the backup buyer’s agent that the backup contract is now active. The backup buyer then has the negotiated window to do their own inspection, secure financing, and move toward closing on the original terms they signed. There is no renegotiation unless both sides agree to one. That is the entire appeal: the seller does not lose weeks re-listing and re-marketing the home, and the backup buyer does not have to compete in a fresh round of multiple offers.
Risks and Etiquette for Sellers
A backup offer is not free of friction. The seller has to be transparent that a backup contract exists, particularly if other interested buyers later ask whether the home truly has no path forward. Listing agents typically keep the showing schedule limited but not fully closed once a primary contract is signed, since a strong backup is worth having on file. We cover how that showing decision plays into a seller’s broader negotiating position in our multiple offers playbook for sellers.
It is also worth saying plainly to any buyer asked to go second: a backup position is a real, binding contract, not a runner-up consolation prize. Some buyers walk away rather than tie up their search; others, especially in a market with more competition than there was a year ago, are glad to have a documented place in line on a home they already love.
Quick Answers
Does a backup buyer have to pay earnest money up front? Yes, the backup contract is fully executed and earnest money is typically due on the same short timeline as any other Colorado contract, even though the contract may never activate.
Can a seller accept more than one backup offer? Yes, sellers can stack backup positions, with each one activating in the order it was accepted if the one ahead of it also falls through.
Can the seller still show the home to other buyers after accepting a backup offer? Generally yes, since the backup buyer is not yet under an active obligation to close, but agents should disclose the existing contracts to anyone touring.
Prerna Kapoor | REALTOR® | Luxury Home Specialist
REAL Brokerage | 720-949-5450 | info@prernakapoor.com
CLHMS • RENE • PSA • ABR | International Sterling Society Award Winner
Prerna specializes in residential real estate across Parker, Aurora, Lone Tree, Castle Pines,
Highlands Ranch, Cherry Creek, Greenwood Village, and Centennial. She speaks English, Japanese,
and Hindi.
