Yes, you can buy a house before selling your current one. I see this all the time, and there are five ways to do it: a bridge loan, a HELOC on the home you're leaving, a cross-collateral loan, buying with a larger first mortgage and recasting after the sale, or a contingent offer. Which one fits comes down to two numbers: how much equity is in the departing home, and whether you can carry both payments for a few months.
The trap is the order. The HELOC has to be in place before the sign goes in the yard, and some of the others only work once you've got a signed contract on the old house.
What is a bridge loan and how does it actually work?
A bridge loan is a short-term loan, usually secured by the equity in the home you're leaving, that funds the next home's down payment and gets paid off when the old house sells. The federal definition is temporary financing "with a term of 12 months or less, such as a loan to finance the purchase of a new dwelling where the consumer plans to sell a current dwelling within 12 months" (CFPB, Regulation Z, 12 CFR 1026.43).
Because it's temporary, it's exempt from RESPA and from the ability-to-repay rules, so underwriting is lender-defined. Depending on the lender and whether the loan is consumer-purpose, you may get a Loan Estimate and Closing Disclosure or only a term sheet. Read whichever you get. The ones I see run six to twelve months with interest-only or deferred payments, sized against the equity in the departing home, and they vary by lender.
A bridge loan is a timing tool, and with timing tools the rate isn't the point. Execution is. Under Fannie Mae's guidelines it can't be cross-collateralized against the new property (Selling Guide B3-4.3-14), and the lender on the new home has to document that you can carry "the payments for the new home, the current home, the bridge loan, and other obligations."
Bridge loan vs HELOC: which one should you set up, and when?
A HELOC on the departing home does the same job, and for most move-up buyers it's cheaper. The difference is timing and cost.
A HELOC has to be opened while the home is still your primary residence and isn't listed (next section). Draw periods of ten years are common, payments during the draw are typically interest-only, and there's usually no prepayment penalty. The fee to watch is different: the CFPB lists a "cancellation fee" for "terminating the HELOC early, usually within the first two or three years." Some lenders claw back waived closing costs if the line closes inside that window, and a sale closes the line. Get that number before you sign.
A bridge loan can be opened later, even after the house is listed or under contract, because the bridge lender is underwriting the sale. That flexibility is what you pay for. Bridge financing costs more than a HELOC, the term is short, and if the home doesn't sell in time you're refinancing or extending under pressure.
My order for a client with equity and a few months of runway: open the HELOC first, while it's still just your house. If that window has passed, the bridge loan still works. HELOC mechanics are in HELOC questions answered.
Can you get a HELOC on a house that is already listed for sale?
Usually not, and this is the most expensive thing to learn late. No agency rule forbids it. It's lender policy.
Most HELOC lenders won't open a line on a home that's listed, and some look back six months. Some lenders on file require the listing to be pulled before you apply, and some cap loan-to-value at about 80% if the home was listed in the prior six months. Specifics vary by lender. So open the line before the sign goes in the yard. The lookback exists to catch people who pull a listing to game it.
How do lenders qualify you while you still own the first house?
Both payments count, until they don't. When your current home is pending sale but won't close before the new loan does, Fannie Mae requires that "the current PITIA and the proposed PITIA must be used in qualifying the borrower" (Selling Guide B3-6-06, effective September 2, 2026). PITIA is principal, interest, taxes, insurance, and association dues. The departing payment drops out once the lender has "the executed sales contract for the current residence" and "confirmation that any financing contingencies have been cleared." That means a signed buyer with approved financing, not a listing. A bridge loan gets the same treatment. Fannie Mae calls it "a contingent liability that must be considered part of the borrower's recurring monthly debt obligations" (Selling Guide B3-6-05, effective August 5, 2026), waived under the same two-document test. A HELOC payment counts too, on whatever you've drawn, and some lenders qualify you on a fully amortizing payment instead of the interest-only one.
Departing-residence rent can offset the old payment. Keep the old house as a rental and Fannie Mae will credit rent, though not how most people expect. Under Selling Guide B3-3.8-05 (effective September 2, 2026), "lease agreements are not permitted for any departing residence." The credit is based on market rent, documented with an appraiser's Single-Family Comparable Rent Schedule (Form 1007), multiplied by 75%, minus the departing PITIA. A positive result can "offset the departing residence PITIA only." It can't be added to income for a bigger new loan. Freddie Mac gets to the same 75% from a signed lease instead, and also caps the credit at offsetting the payment for a first-time landlord. Reserves stack here: six months of the old home's PITIA if you have under 12 months of landlord experience, plus 2% of the loan balances on it (B3-3.8-05, B3-4.1-01). Renting it also starts the capital-gains clock, covered in the golden handcuffs article.
So get the new-home approval underwritten with the departing payment in it from day one. That's the argument in the preapproval edge. Qualify carrying both and every path is open. Qualify only once the old payment drops out, and your path is the contingent offer.
Is a contingent offer really a losing offer this fall?
Not automatically. A home-sale contingency makes your offer depend on the old house closing, so you never carry two mortgages. It loses bidding wars.
The National Association of Realtors put August 2026 housing supply at 4.9 months, and Realtor.com's August report put median time on market at 60 days. A seller who isn't drowning in offers reads a clean contingent offer with a short kick-out clause differently than they did three years ago. That's my read of the data, not a rule, and the seller you want may still say no. More in is fall 2026 a good time to buy a house.
The cost of a contingent offer is the house you don't get. The cost of a bridge or HELOC is a number you can run today. Let me break it down with an illustrative example, not an offer or a rate/APR quote. Say your departing home's full payment is $2,400 a month and the new one is $3,600. Carrying both is $6,000 a month plus the interest on whatever you drew. At a 60-day median, plan for two to four months: three months of double payments is $18,000 plus the line's interest. Selling first and renting six months at $3,000 runs $18,000 plus two moves, storage, and half a year of price risk. The real question is how many months you carry both, and a HELOC opened before listing keeps that number cheap. Run your own numbers in the mortgage calculators.
What happens after the old house sells?
Escrow pays off the bridge or HELOC from the proceeds first. If you bought with a larger first mortgage and planned to pay it down with the proceeds, there's one more step: the recast.
A recast (re-amortization) means you make a big principal payment and the servicer recalculates your monthly payment over the remaining term at the same rate. Fannie Mae allows it when the only changes are the lower balance and payment and you were "fully qualified based on the original note amount" (Selling Guide B2-1.5-02; Servicing Guide C-1.2-01).
The Guide sets no minimum, fee, or timeline. Those are servicer policy. Servicers commonly require a minimum lump sum, often around $10,000, charge a processing fee of a few hundred dollars, and take roughly 45 to 90 days. Government-backed loans (FHA, VA, USDA) generally don't offer a voluntary recast. The recast path's quiet advantage: no bridge, no HELOC, no closure fee, provided you qualify for the bigger loan while carrying the old payment.
Which path fits your numbers?
Sorted by the cost if the old house takes six months to sell.
| Path | When to set it up | Qualify carrying both payments? | If the house sits six months | Best fit |
|---|---|---|---|---|
| Contingent offer | Any time; written into the offer | No; the old payment drops out once the contingency clears | Only the house, if the seller walks | Thin reserves; sellers with few offers |
| HELOC on the departing home | Before the listing goes live | Yes, drawn-balance payment in your ratio | Two payments plus interest on the draw; possible closure fee | Equity, not yet listed, can carry both |
| Bridge loan | Any time, including after listing | Yes, unless the two-document exception applies | Two payments plus the bridge cost; the term may run out | Already listed, or needs funds fast |
| Recast after the sale | At purchase; recast after closing | Yes, for the full loan amount | A bigger new payment plus the old one; no bridge cost | Strong income, conventional loan, no second lien |
| Departing-residence rental income | Before closing: market-rent appraisal (Fannie) or signed lease (Freddie) | Yes; the rent credit offsets the old payment only | Not selling, so the reserve stack applies | Wants to keep the house and holds the reserves |
One more, not in the table: the cross-collateral loan, one private-money loan secured by both homes and released on the old one at sale. It can't sit behind a Fannie Mae purchase loan, so it's a whole-purchase private loan, refinanced afterward. Ask me whether your situation fits it.
FAQ
What if the house doesn't sell before the bridge loan comes due? Then you extend, refinance, or drop the price. Extension terms vary by lender, so ask before you sign, not at month eleven. That risk is why a HELOC opened before listing is the calmer version of this tool.
What if my numbers don't fit the agency box? Non-QM programs underwrite the departing home differently. Some I work with will count rent from a signed lease with a collected deposit, and some accept a third-party bridge or a HELOC on the departing home as the down-payment source. Specifics vary by lender. Start at the Non-QM program page.
Bring Me Both Addresses and Your Target Close Date
Math is what I do. Send me both addresses, your rough equity, and the date you want to close, and I'll run every path against your numbers, including the ones the calendar has already closed. Among the 100+ lenders I have access to, roughly 30 are hard-money, private-money, and commercial sources, the shelf this problem needs. No obligation. Call or text (949) 990-6030, or schedule a call. Knowledge is power.
Disclosures: Randy Mathis, NMLS #1516760 | DRE #02236644. Lumin Lending, Inc., NMLS #2716106 | DRE #02291443. Equal Housing Opportunity. Licensed in AL, AZ, CA, CO, FL, ID, MD, MI, OR, PA, TN, TX, UT, VA, WA. This article is educational and is not a commitment to lend, a rate quote, or an APR disclosure. Bridge, HELOC, Non-QM, and conventional loan terms, agency guidelines, and lender overlays vary by lender, program, and property, change frequently, and are subject to credit approval and income and property qualification. Bridge and hard-money financing carries higher cost, a short term, and the risk that the departing home does not sell within the term. Nothing here is a prediction or representation of approval for any borrower. All dollar figures are illustrative examples only, not an offer of credit or a representation of terms available to any borrower. Housing-market statistics cited are published third-party figures as of their stated months and describe the market, not any individual transaction. Sources: CFPB, Regulation Z, 12 CFR 1026.43(a)(3)(ii), and Regulation X, 12 CFR 1024.5(b)(3); CFPB, "What fees can my lender charge if I take out a HELOC?"; Fannie Mae Selling Guide B3-4.3-14 (Bridge/Swing Loans), B3-6-06 (Qualifying Impact of Other Real Estate Owned, effective September 2, 2026), B3-6-05 (Monthly Debt Obligations, effective August 5, 2026), B3-3.8-05 (Rental Income from Non-Subject Property: Departing Residence, effective September 2, 2026), B3-4.1-01 (Minimum Reserve Requirements), and B2-1.5-02 (Loan Eligibility); Fannie Mae Servicing Guide C-1.2-01 (Processing Additional Principal Payments); Freddie Mac Seller/Servicer Guide 5306.1; National Association of Realtors, August 2026 Existing-Home Sales (released September 10, 2026); Realtor.com August 2026 Monthly Housing Trends Report (released September 2, 2026); lender HELOC and servicer recast policies on file, aggregated and anonymized. Information current as of September 23, 2026.
