Reverse 1031 Exchange — Buy First, Sell Later

You can't own both properties at once and still call it an exchange — so in a reverse exchange, an entity affiliated with your intermediary (an "exchange accommodation titleholder," or EAT) takes temporary title to one of them, usually the new purchase, and "parks" it. You then sell your old property and complete the swap. The IRS blessed this structure with a safe harbor (Rev. Proc. 2000-37) as long as the parking lasts no more than 180 days.

The same deadlines, mirrored

From the day the EAT takes title to the parked property, you have 45 days to identify which property you'll sell and 180 days to complete that sale and unwind the parking. Same clock, opposite direction — and just as unforgiving. If your old property doesn't sell within 180 days, the safe harbor lapses and you simply own two properties with no deferral.

The two practical hurdles

Cost: reverse exchanges typically run several thousand dollars in accommodator fees — often $3,500–$7,500+ — because an entity must be formed, insured, and hold title. Financing: you must fund the new purchase without your sale proceeds, and because the EAT is on title, many lenders balk. Cash buyers and those with strong credit lines have a much easier time.

When it earns its cost A rare building in a supply-starved market, a seller who won't wait, or a deferred gain large enough that losing the exchange would cost tens of thousands. Against those stakes, the accommodator fee is cheap insurance.

Compare the tax stakes first →Run your numbers — if the deferral is large, a reverse structure may be worth its cost

Common Questions

Why can't I just buy the new property and sell the old one whenever?

Because owning both at once means no exchange happened — you simply bought and later sold. The parking arrangement exists precisely so that, on paper, you never hold both properties simultaneously.

What happens if my old property doesn't sell within 180 days?

The safe harbor ends. You keep the new property, keep the old one, and get no deferral when the old one eventually sells. Some investors proceed outside the safe harbor with professional guidance, but it is riskier territory.

Can I do a reverse exchange with a mortgage on the new property?

Sometimes, but the lender must accept the accommodation titleholder on title during the parking period. Expect extra underwriting friction — or plan to close with cash or a credit line and refinance after the unwind.