How to pay for a basement renovation

Finishing a basement is a big project. Most cost somewhere between $20,000 and $60,000, and a bathroom or rental unit pushes that higher. Remodeling industry surveys such as NARI’s Remodeling Impact report have long put typical basement projects in that range. Few people pay entirely in cash, so the real question is which kind of borrowing costs the least for your situation. The main options, in rough order from cheapest to most expensive, are savings, home equity, personal loans and contractor financing.

Here’s how the options compare in the calculator for borrowing $35,000 at the example rates for good credit:

Your financing options

Savings or cash

Paying cash is the cheapest way to finish a basement, with no interest, fees or risk to your home. Many homeowners use a mix: savings for part of the project, or a phased approach where they finish the basement in stages as money allows.

Home equity line of credit (HELOC)

A HELOC works like a credit card secured by your home. You’re approved for a credit limit and draw from it as bills come due, usually during a 10-year draw period, and you only pay interest on what you’ve actually used. That flexibility suits a remodel where costs arrive in stages. Rates are usually variable, so payments can rise, and many HELOCs allow interest-only payments during the draw period, which feel cheap but don’t pay down the balance. Because your home secures the loan, falling behind puts it at risk.

Home equity loan

A home equity loan gives you a lump sum up front with a fixed rate and a fixed monthly payment, usually over 5 to 20 years. It’s a good fit when you have a firm contractor quote and want predictable payments. Expect some closing costs, and like a HELOC, it’s secured by your home.

Cash-out refinance

A cash-out refinance replaces your mortgage with a larger one and gives you the difference in cash. It can make sense if current mortgage rates are close to or below your existing rate. If your current rate is much lower, refinancing the whole balance to fund a basement usually costs more than a separate HELOC or home equity loan.

Personal loan

Personal loans are unsecured, so your home isn’t on the line, and funding is fast. Terms are shorter, typically 2 to 7 years, which means higher monthly payments, and rates are higher than home equity options, especially with fair credit. Many lenders charge an origination fee of around 1% to 8%, taken out of the loan amount.

Contractor financing and 0% promotions

Many remodelers partner with lenders to offer financing, sometimes with 0% interest for 12 to 24 months. That’s a genuinely good deal if you can pay the balance off within the promo period. Read the fine print, though: many promotions use deferred interest, which means missing the deadline by even a small amount can trigger interest on the entire original balance at a high rate.

FHA 203(k) renovation loan

An FHA 203(k) loan rolls renovation costs into a new FHA mortgage, either when you buy a home or when you refinance. The Limited 203(k) covers up to $75,000 in repairs and improvements (the cap was raised from $35,000 in 2024), and the Standard 203(k) handles larger projects with a HUD consultant. Down payments can be as low as 3.5% and credit requirements are flexible, but there’s more paperwork, you must use a licensed contractor, and you’ll pay FHA mortgage insurance.

Credit cards

Credit cards are the most expensive way to carry a balance. They’re fine for buying materials to earn cash back, as long as you pay the statement in full each month. Don’t use them to finance the project itself.

How much home equity can you borrow?

Most lenders let you borrow until your total mortgage debt reaches about 80% to 85% of your home’s value. For a $400,000 home with a $250,000 mortgage, 85% of the value is $340,000, so you could borrow up to about $90,000 against the home. Your credit score, income and debt-to-income ratio also affect how much you’re approved for. The calculator above runs this check automatically.

Tips before you borrow

• Get your project quotes first, then borrow the total plus a 10–15% contingency. Running short halfway through is stressful and expensive.
• Compare official Loan Estimates from at least three lenders, including credit unions. Look at the APR and closing costs, not just the rate.
• Match the loan to the project. Use a HELOC for costs that come in stages, a home equity loan for a fixed quote, and a personal loan for smaller projects or when you have little equity.
• Check for prepayment penalties so you can pay the loan off early if your budget allows.
• Ask about tax treatment. Under current IRS rules, interest on a home equity loan or HELOC may be deductible if the money is used to substantially improve the home securing the loan. A tax professional can tell you whether it applies to you.

Thinking of renting the space out? Rental income can help pay back the loan. See what a basement unit could earn with our basement apartment ROI calculator.

Related guides

• Basement finishing cost calculator
• Basement apartment ROI calculator
• Basement bathroom cost calculator
• 12 steps to finish a basement in order

Frequently asked questions