Bridge Loan vs. HELOC: Which Fits Your Move?

Fanus GonethReal Estate Broker, Capitol Realty & InvestmentsOctober 22, 202613 min read

Bridge Loan vs. HELOC: Which Fits Your Move?

Homeowners comparing financing estimates at home

A bridge loan is a short-term loan that covers the gap between buying your next home and selling your current one. A HELOC is a revolving credit line you open against your equity and can use for almost anything. If you are buying first and need a down payment fast, a HELOC is usually cheaper, but only if you open it before you list. A bridge loan is the option for when you are already under contract and the timing is tight.

The details decide which one works. Below we cover how each product works, what each costs you in risk, and the alternatives that often beat both.

TL;DR

A bridge loan is a one-time, short-term loan built around a pending sale. A HELOC is a revolving line you draw on over time, often at a variable rate.
A HELOC is generally the cheaper tool, but many lenders will not open one once your home is listed, so timing matters more than the product.
The biggest bridge-loan risk is carrying several payments at once if your current home sits unsold.
Before choosing either, look at a buy-first mortgage followed by a recast, or at a sale-timing strategy. Both can cost less.
Whichever route you take, talk to a mortgage lender before you make an offer, not after.

The core difference in plain terms
How a bridge loan works
How a HELOC works
Which one fits which situation
Two worked scenarios
Alternatives that often cost less
What the Seattle-area market means for your plan
Our perspective
Questions to ask a lender before you decide
Get the number first
FAQ
Sources

The core difference in plain terms

Both products let you tap the equity in the home you own. They are built for different jobs.

New American Funding describes a bridge loan as a short-term loan secured by your current home's equity that provides temporary funds for buying the next home before the first one sells. It assumes a sale is coming. The sale is how the loan gets repaid.

The Consumer Financial Protection Bureau explains that a home equity line of credit is an open-end line of credit that lets you borrow repeatedly against your home equity. It does not assume a sale. You could use it for a down payment, a renovation or an emergency, and you could keep it after you move.

That one assumption drives most of the other differences.

	Bridge loan	HELOC
Purpose	Cover the gap between buying and selling	Flexible borrowing against equity
Structure	One-time loan	Revolving line with a draw period
Term	Short, built around the sale	Longer, often with a multi-year draw period
Repayment	Typically paid off from the sale proceeds	Interest on what you draw, then principal later
Typical cost	Generally higher rates plus setup fees	Generally lower, often variable rate
Available when your home is listed?	Designed for it	Often not
Main risk	Overlapping payments if the sale drags	Variable payments, and losing access at the wrong time

Lenders set their own terms, so treat the table as a map of how the products are generally structured, not a quote.

How a bridge loan works

With a bridge loan, you borrow against your current home so you can put money toward the next one. Depending on the lender, that might pay off your existing mortgage and provide the down payment, or it might sit as a second lien next to your existing mortgage. Ask each lender which structure they use, because it changes your costs and your payments.

The point is speed and strength. A bridge loan can help you make an offer without a sale contingency, which matters in a market where sellers have options.

What a bridge loan costs

Bridge loans are generally priced above HELOCs and standard mortgages, and they often carry origination or setup fees. Because the loan is short, those fees weigh heavily on the cost per month you actually use the money. Ask for a written estimate of the rate, all fees, the term and what happens if the term ends before your home sells.

The real risk: stacked payments

Experts quoted by New American Funding say a bridge loan works best when you have a realistic, short exit, meaning a home likely to sell quickly. The risk grows if your current home lingers, because you are still responsible for debt on more than one property.

Picture the worst version. You owe your existing mortgage, the bridge loan and the new mortgage at once. Lenders count those obligations when they judge whether you qualify, so even approval can be harder than you expect.

How a HELOC works

A HELOC has a draw period, during which you borrow and repay as needed, followed by a repayment period. The CFPB's HELOC explainer covers the mechanics, and its mortgage key terms page defines equity as what your property is worth minus the amount of any mortgage on it.

HELOC rates are generally variable and move with a market index, so your payment can change. That is the trade-off for the lower starting cost: less predictability. If you only need the money for a few months, that matters less. If you leave a balance for years, it matters a lot.

The timing trap

The most common mistake we see described is waiting too long. According to FastExpert's guidance on buying before selling, HELOCs are frequently unavailable once a property is listed for sale, because lenders may read the listing as a plan to close the line. The advice is to open the line well in advance if you plan to use it for a down payment or closing costs.

If you might move in the next year, call a lender about a HELOC before you list, even before you decide for certain. An open line you never use is a very different position from a request you make once the sign is in the yard.

A tax note on HELOC interest

Interest on a HELOC is deductible only in specific cases. IRS Publication 936 says home mortgage interest generally must be on a loan secured by your home, and the CFPB notes the deduction depends on the money being used to buy, build or substantially improve the home that secures the line. If you borrow against your current home to fund the down payment on a different one, that may not qualify. Ask a tax professional (a CPA or enrolled agent) how this applies to your return.

Which one fits which situation

Choose a HELOC if

You already have meaningful equity and you have not listed yet.
You can open the line months before you need it.
You can handle a payment that moves with the market.
You expect to repay quickly from the sale, and the line will cover only the down payment or closing costs, not the whole purchase.

Consider a bridge loan if

You are already listed, or about to be, and a HELOC is no longer on the table.
You found a home you want, and a non-contingent offer is what makes it competitive.
Your current home is in a condition and location where you have good reason to expect a quick sale.
Your income can carry the overlapping payments for longer than planned. Run the numbers for the scenario where the sale takes twice as long.

Neither may be right if

Your equity is thin, since both products depend on it.
Your debt-to-income ratio is already tight.
You would be borrowing against the very home you need to sell in a soft market, with no margin for delay.

Two worked scenarios

These are illustrations of the logic, not quotes. They use no real lender's figures.

Scenario one: planning ahead. A family in Shoreline thinks they will outgrow their house next spring. In the fall, they open a HELOC while the house is not yet listed. When they find a home in spring, they draw only what they need for the down payment, make a clean offer, list their house, and repay the line at closing. The plan worked because the line was in place before the listing.

Scenario two: moving fast. A homeowner finds the right house and has not yet listed. A HELOC application now would take time they do not have. A bridge loan is the tool built for this, but they also ask a lender whether a buy-first mortgage with a later recast would cost less. The answer depends on whether they can qualify for the higher loan during the overlap.

Timelines comparing planned and fast moves

Alternatives that often cost less

Before you pay bridge-loan fees, check these.

Buy first, then recast

FastExpert's guidance describes a path many people miss: if you buy first with a bigger loan than you want, you may not need to refinance to fix the payment. A recast lets you apply the proceeds of your home sale to your new principal, and the loan is re-amortized over the remaining term at the original rate. That avoids a refinance's costs and credit re-underwriting.

Two cautions. First, recasting is a lender policy, not a right, so get it confirmed in writing with the servicer before closing. Second, you must be able to qualify for the larger debt load during the overlap.

Sell first, then rent or negotiate

Selling first removes the double-payment risk. The price is logistics: you may need short-term housing, or a negotiated rent-back or extended closing so you are not in limbo. In a market with more choices for buyers, it can be a calmer path.

Contingent offers and buy-before-you-sell programs

The same FastExpert page notes that offers contingent on a sale often lose in competitive markets like Seattle. Some buyers use buy-before-you-sell programs, where a third-party company advances equity or backs the offer. Read the fee structure closely, beyond the marketing, before you commit.

What the Seattle-area market means for your plan

Market conditions change how risky the gap is. The Northwest Multiple Listing Service reported in October 2026 that active listings rose 24.5% from a year earlier to 24,965, while sales fell 15.1% to 6,231. More choice helps buyers. It also suggests that sellers should not assume a home will go quickly, which is exactly the assumption a bridge loan depends on.

That is a reason to price your exit conservatively. If your plan only works when your house sells in a week, it is not a plan with margin.

Our perspective

We see this decision go wrong in one way more than any other: people choose the loan before they know what their home is worth. Every option above depends on a number, the equity you really have and the price you can realistically get. A generic online estimate can be off by a lot on a specific block, and a financing plan built on a wrong number inherits the error.

Our perspective — overview diagram

That is why we start with a walk-through valuation based on block-level comparables rather than an algorithm. Once you have a believable sale price and a believable timeline, the financing question gets much simpler. You can tell your lender what you will net, and you can judge how long the overlap might last.

Our advice is to look at the worst-case timeline first. If you could carry two homes for three months comfortably, you have options. If you could not, a contingent offer or selling first may be the better move, however much a bridge loan feels like the faster route. We are brokers, not lenders, so we will point you to the right questions and let a licensed mortgage professional quote the loan itself.

— Fanus

Questions to ask a lender before you decide

If I list my home, will you still open or keep a HELOC?
What are the rate, the fees and the term on a bridge loan, in writing?
What happens if my home has not sold when the term ends?
How will my existing mortgage, the new loan and any bridge debt count toward my debt-to-income ratio?
Do you allow a recast on the new mortgage, and will you confirm it in writing before closing?
Can I repay early without a penalty?

Get the number first

If you are weighing a move in Lynnwood, Seattle or the surrounding North Sound communities, the first step is knowing what your home would sell for. Fanus offers a home valuation based on in-person, block-level comparables. If you are buying, our buyer guidance covers budget, home comparisons and offer strategy. If you are selling, see how we approach selling your home. First-time buyers can start with our Seattle first-time buyer guide, and anyone listing can read how to sell a house in Seattle.

FAQ

Is it better to get a HELOC or a bridge loan?

It depends on timing and risk. A HELOC is generally cheaper, but it is often unavailable once your home is listed, so it suits people who plan ahead. A bridge loan suits a tight, time-sensitive gap when you have a realistic expectation of a quick sale.

Can I get a HELOC if my house is already on the market?

Often not. Lenders frequently see a listing as an intent to close the credit line, so opening one before you list is the safer approach. Policies vary by lender, so ask directly.

Is HELOC interest tax deductible if I use it for a down payment?

Not necessarily. Under IRS Publication 936, the deduction generally applies when the funds are used to buy, build or substantially improve the home that secures the loan. Using a HELOC on your current home toward a different purchase may not qualify, so check with a tax professional.

What is a loan recast, and can it replace a bridge loan?

A recast applies your sale proceeds to the new mortgage principal and re-amortizes the loan at the original rate, without a full refinance. It can replace a bridge loan for some buyers, but only if you qualify for the larger loan during the overlap and the servicer agrees in writing before closing.

Bridge Loan vs. HELOC: Which Fits Your Move?