HELOC vs. Cash-Out Refinance: How King County Homeowners Should Tap Their Equity in 2026

Most King County homeowners are sitting on  well over six figures of equity. Here’s how to use it without giving up the mortgage rate you fought for.

If you bought your home in King County more than a few years ago, you’re probably wealthier than you think. The typical American homeowner with a mortgage is holding around $212,000 in equity they could actually borrow against. In King County, where the median home sits near $835,000, plenty of homeowners I work with in Renton, Kent, and Covington are well past that number.

The question I hear all the time: how do I get to that money without wrecking the 3% mortgage I locked in years ago? There are two main answers. A home equity line of credit, or a cash-out refinance. They sound similar. They are not. Pick the wrong one and it can cost you hundreds of dollars a month for decades.

I price homes every day as a BPO field agent, so I see what equity positions actually look like across South and East King County. Let me walk you through how each option works, what each one costs, and the simple math that tells you which one fits your situation.

How a HELOC Works (and What It Costs)

A HELOC is a line of credit secured by your house. Think of it like a credit card with a much lower rate and your home as collateral. The bank approves you for a limit, often up to 80% or 85% of your home’s value minus what you owe. You draw what you need, when you need it, and you only pay interest on what you’ve actually used.

The national average HELOC rate in June 2026 is sitting around 7.25% to 7.4%, not far off the 2026 low of 7.19% from March. HELOC rates are variable. They move with the prime rate, which is currently 6.75%. If the Fed cuts, your rate drops. If the Fed hikes, it climbs. That flexibility cuts both ways, and you need to be honest with yourself about whether your budget can handle a rate that moves.

Costs are the quiet advantage here. Most HELOCs come with low or no closing costs. Compare that to what you’ll see below for a refinance, and the gap is real money.

How a Cash-Out Refinance Works (and What It Costs)

A cash-out refinance replaces your entire existing mortgage with a new, bigger one. You owe $400,000 and want $100,000 in cash? Your new loan is $500,000, and the whole thing carries today’s rate. In 2026 that means roughly 6.8% for most borrowers, with the best-qualified getting closer to 6.25%.

That word “entire” is the trap. You’re not borrowing $100,000 at today’s rate. You’re re-borrowing all $500,000 at today’s rate, including the $400,000 you already had locked at something much lower.

Then come the closing costs. A cash-out refinance typically runs 2% to 5% of the full new loan amount. On a $500,000 loan, that’s $10,000 to $25,000. On a HELOC, you’d often pay close to nothing to open it.

The core difference: a HELOC adds a second loan, a cash-out refinance replaces your entire mortgage at today’s rate.

HELOC vs. Cash-Out Refinance: The Math That Decides It

Here’s a real-world King County example. Say you own a home worth $850,000, you owe $400,000 at 3%, and you want $100,000 for a remodel.

So when does the refinance win? Two cases. First, if your current rate is already high. Buyers who purchased in late 2023 or 2024 at 7% or above can sometimes refinance today, pull cash out, and barely change their payment. Second, if you need one large fixed sum and you want one predictable fixed payment for 30 years. Some people sleep better with that, and that’s a legitimate reason.

The Tax Rules Most Homeowners Get Wrong

A lot of people still believe HELOC interest is automatically deductible. It isn’t. Under current IRS rules, interest on a HELOC or cash-out refinance is only deductible if the money goes toward buying, building, or substantially improving the home that secures the loan. A kitchen remodel in your Kent home can qualify. Paying off credit cards or buying a car does not.

Two more catches. You have to itemize your deductions to claim it, and most households take the standard deduction instead. And the burden of proof is on you, so keep every contractor invoice and receipt. If you’re borrowing a meaningful amount, a one-hour conversation with a CPA before you sign is worth far more than it costs. I’m a real estate agent, not a tax advisor, and this is exactly the kind of decision where the right professional pays for itself.

The Local Angle: King County Equity in 2026

King County’s median home price has come down about 7.5% from last year. I know that sounds like bad news for equity. Here’s the context that matters: if you bought in Renton or Auburn before 2021, your home is still worth dramatically more than you paid. A pullback from the peak hasn’t erased years of gains. Most long-term owners in South King County are still holding $200,000 to $400,000 or more in usable equity.

What I see in the field is homeowners using that equity three ways. Remodels are the big one, especially kitchens and primary suites in 1980s and 1990s homes in Covington and Maple Valley, where an updated home sells noticeably faster. Second is debt consolidation, which can make sense at 7.4% against credit cards charging 22%, as long as the spending that built the debt stops. Third, and growing fast, is move-up buyers using a HELOC as bridge money to buy their next home before selling their current one. If that’s your situation, I broke down how that strategy works in my contingent offer guide for King County, and I compared the keep-or-sell decision in renting out your King County home vs. selling.

One more local note. Where prices go from here affects how much cushion you have. My King County housing market forecast for 2026 covers the inventory and price trends that matter if you’re deciding whether to tap equity now or wait.

Kitchen and primary suite remodels are the most common use of equity I see across South King County.

What This Means for You

If you’re a King County homeowner with a mortgage rate under 5.5%, start with the HELOC conversation. Keeping your existing rate is worth real money every month, and the rate math above shows how much. Get quotes from at least three lenders, including a local credit union, because HELOC rates and fees vary more than first mortgage rates do.

If your rate is 6.5% or higher, run both options side by side. A cash-out refinance might lower your rate and put cash in your pocket at the same time. Current rate context is in my King County mortgage rates guide.

And before either one, get a real valuation. Every dollar of borrowing power depends on what your home is actually worth, and online estimates in our market routinely miss by tens of thousands. If you’re also weighing what a sale would net you instead, my guide to capital gains on home sales in Washington covers the tax side of that decision.

FAQ

Your home equity is a tool. Used well, it funds the remodel, clears the expensive debt, or bridges you into your next home. Used carelessly, it puts the roof over your head at risk. The right first step is knowing your real number.