How to Buy a House Before Selling Yours

Every move-up buyer hits the same wall: the down payment for the next house is locked inside the current one, and the current one can't sell until you've somewhere to go. Selling first means moving twice or writing offers with a contingency that sellers toss aside in any competitive market. Buying first means briefly carrying two mortgages. The good news: this problem is old, well understood, and has at least five working solutions. The right one depends on your equity, your income, and your appetite for moving boxes.

The purpose-built tool. A bridge loan borrows against your current home's equity to fund the next purchase — typically a short-term loan of six to twelve months, repaid the day your old house closes. It's fast and decisive, and you pay for that: rates and fees run above standard mortgages, and you'll want a realistic sale timeline before signing. Bridges shine when the new purchase can't wait and your current home will genuinely sell quickly.

A home equity line of credit on your current house can fund the next down payment at a far lower cost than a bridge — with one catch that trips people constantly: lenders won't open a HELOC on a home that's already listed for sale. The move is chess, not checkers: open the line months before you plan to list, while the house is just a house. Draw it for the new purchase, sell, repay the line at closing. Same bridge, fraction of the cost, but it demands planning ahead.

If your income qualifies you to carry both homes temporarily, you don't need the old equity at all — yet. Close on the new home with a smaller down payment, accept the bigger payment for a month or two, then apply the sale proceeds to the new mortgage and request a recast: the servicer re-amortizes the loan on the new balance, your payment drops to where it would have been, and you keep the rate you locked. No second closing, no refinance costs. This play is standard practice in the jumbo world and criminally underused everywhere else.

Writing an offer contingent on selling your current home is free and safe — and in a competitive market, it's often a losing ticket, because the seller is comparing you against buyers with no strings attached. Contingencies work in slower markets, on longer-sitting listings, or when you can sweeten other terms. Just know what you're trading: certainty for competitiveness.

• Your current home may be a better rental than a sale — especially if you locked a low rate that transfers to landlord math beautifully.
• A DSCR loan reframes the old house entirely: it qualifies on its own rental income, not your personal debt-to-income — so it stops competing with your new mortgage application.
• Lenders can also offset the old payment with documented rent when you qualify for the new home, easing the two-mortgage squeeze.
• You keep the appreciation, the amortization, and the low rate — and your next move builds a portfolio instead of closing a chapter.

Five doors, one decision — and the best one is rarely obvious from the outside. It depends on your equity position, how fast homes move in your market, and whether the old house deserves to stay in your life as a rental. Tell me your numbers — current home value, what's owed, the target price range — and I'll map every route side by side, including the ones that keep the first house working for you. The move-up doesn't have to be a leap of faith.