The Simultaneous TransactionTreasure Valley, Idaho
The most logistically complex part of moving up — how the simultaneous close works, what can go wrong, and how to protect yourself on both sides.
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Dennis Fomin
Fomin & Company · Associate Broker, GRI, RSPS · 2026
Quick Answer
How do I sell my current home and buy the next one at the same time in Idaho?
A simultaneous close — also called a concurrent close or double close — coordinates the closing of your current home sale and the closing of your next home purchase on the same day or within days of each other. Your proceeds from the sale fund the down payment on the purchase. The sequence typically is: accept an offer on your current home, identify and go under contract on your next home with a closing date aligned to your sale, and close both transactions on coordinated dates. It requires an experienced agent managing both sides and a lender who understands the sequencing.
Dennis Fomin — Founder, Fomin & Company. The simultaneous close is the most technically demanding transaction in residential real estate. I have coordinated them successfully and I have seen them fall apart. The difference is almost always in the sequencing — and in having the right lender on the purchase side. See also the seller timeline: The Idaho Home Selling Timeline.
The Two Paths for a Simultaneous Move-Up
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Path 1: Sell First, Buy Second (Most Common)List your current home, accept an offer, then identify and contract your next home with a closing date 3-5 days after your sale closes. You receive your proceeds, wire them to the title company for your purchase closing, and close on the new home. Clean sequence, but requires short-term housing between closings unless a rent-back is negotiated.
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Path 2: Contract Both SimultaneouslyGo under contract on the next home contingent on your current home selling, or with a bridge loan covering the down payment. Both closings are scheduled for the same day or within days. More complex but eliminates the housing gap.
The Simultaneous Close Sequence — Step by Step
1
List and sell your current home firstGet your current home under contract before going under contract on the next one. This gives you certainty about your proceeds before committing to the next purchase price.
2
Request a rent-back on your current homeNegotiate a 14-30 day rent-back from your buyer, staying in your current home after closing while you move into the new one. This eliminates the housing gap and gives you breathing room.
3
Go under contract on the next home with aligned closing dateOnce your current home is under contract, move quickly on the next purchase. Your closing date on the new home should be set 1-3 days after your sale closes.
4
Notify your purchase lender immediatelyYour lender needs the signed sale contract to update your loan file. Your debt-to-income ratio changes when the current home’s mortgage is eliminated — this often improves your qualifying position on the new loan.
5
Coordinate title companies on both sidesYour agent coordinates with both title companies to ensure funds from the sale close in time to wire to the purchase closing. Same-day wires are standard in Idaho.
6
Close the sale, receive proceeds, close the purchaseSale funds wire to your account or directly to the purchase title company. You sign purchase documents and take keys.
What Can Derail a Simultaneous Close
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Your buyer’s financing falls throughIf your buyer cannot close on your current home, your purchase contract is at risk. Mitigated by accepting buyers with strong, verifiable pre-approvals from local lenders.
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Inspection contingency on your current home triggers exitA buyer who exits during inspection leaves you without proceeds. Mitigated by a pre-listing inspection and thorough disclosure on your current home.
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Appraisal issue on the next homeIf the next home does not appraise at contract price, you face renegotiation or a gap. Mitigated by accurate offer pricing based on comparable sales.
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Timeline misalignment between the two closingsIf your sale closes but the next purchase is delayed, you have proceeds but no home to move into. Mitigated by conservative closing date buffers and clear communication between both agents and title companies.
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An experienced agent is the primary risk mitigantThe agent coordinating a simultaneous close manages both timelines actively. A less experienced agent who treats them as two independent transactions misses the coordination requirement.
Frequently Asked Questions
Can I close on both homes on the same day in Idaho?+
Yes. Same-day double closes happen regularly in Idaho. They require precise coordination between both title companies, both lenders, and both agents. Funds from the sale morning close wire in time for the purchase afternoon close.
What happens if my sale closes but my purchase falls through?+
You have your proceeds in hand but no home under contract. You then search for a new purchase — with cash in hand, which is a strong position. The stress comes from being in transition, not from financial risk.
Do I need to rent between selling and buying?+
If your closing dates are within days of each other and a rent-back is negotiated on your current home, often no. If there is a gap — your sale closes before you find the next home — short-term rental or staying with family is the bridge.
What is a rent-back agreement in Idaho?+
A rent-back allows you to stay in your sold home as a tenant for a period after closing, typically 14-60 days, while paying rent to the new owner. It gives you transition time without finding temporary housing. The terms are negotiated in the purchase contract.
How do I handle the down payment if the sale closes after the purchase?+
Bridge financing — a short-term loan against your current home’s equity — covers the down payment until your sale closes and you repay the bridge. This enables you to close the purchase first if necessary.
Coordinating a Simultaneous Buy-Sell in the Treasure Valley?
Dennis Fomin — Founder, Fomin & Company. Associate Broker, GRI, RSPS. Free 2026 This Is Boise Area Guide.
- —Experienced simultaneous close coordination — Dennis has managed them in multiple market conditions
- —Rent-back negotiation to eliminate the housing gap between closings
- —Timeline alignment between both transactions from day one
Serving Boise, Meridian, Eagle, Nampa, Caldwell & the Treasure Valley.
Summary
The simultaneous close is manageable with the right sequencing and the right team. The most reliable path: sell first, negotiate a rent-back, go under contract on the next home with a closing date timed to follow your sale. The most common failure: treating two connected transactions as two independent ones.
A simultaneous close is not two transactions that happen at the same time. It is one coordinated process with two closings. The difference in framing determines whether it goes smoothly.
