What is a first-lien HELOC?

A first-lien HELOC is a home equity line of credit that replaces your existing mortgage. It becomes the primary loan on your property, and it functions as revolving credit. 

When you borrow against your home, the lender places a lien on your property. That’s normal with any mortgage. This lien gives them the right to repayment if the home is sold for any reason.

First-lien HELOCs hold the primary lien position on a property. That means if your home is sold, this lender gets paid before any other lenders who might have a lien against your home.  

This is different from a traditional HELOC, which sits behind your primary mortgage in second lien position. Here's what you need to know about first-lien HELOCs. 

How lien position works in a HELOC

A lien is a lender’s legal right to your property if you don’t repay a loan. When you borrow against your home, the lender records that claim. The order in which claims are recorded determines who gets paid first when the home is sold.

First-lien position means first in line to be paid. If the home is sold, that loan is repaid before any other outstanding loans against the home. Second-lien position means second in line. If there’s enough money after the first lienholder is repaid, the second lienholder gets repaid. 

Lien order affects the lender’s risk of loss, which is why it also can influence interest rates.

First-lien HELOC vs. second-lien HELOC

Most HELOCs are second mortgages, so they sit behind an existing primary mortgage. A first-lien HELOC takes a different position and could be one of the following situations:

• The HELOC replaces the primary mortgage

• The HELOC stands alone when no mortgage exists (for example, if you owned your home outright when you got your HELOC)

Neither structure is inherently better. The right fit depends on your existing loans, how much equity you have, and how you plan to use the credit line.

When might someone use a first-lien HELOC

A first-lien HELOC is uncommon, but here are two scenarios where it might be ideal:

• Home fully paid off. If you've fully paid off your home, a HELOC automatically takes first-lien position since there's no existing mortgage to stand behind. This is when you’d usually find a first-lien HELOC.

• Refinancing a primary mortgage into a HELOC. Some borrowers choose to replace a traditional mortgage with a first-lien HELOC. Instead of a typical mortgage, the borrower gets a revolving line of credit. This is very uncommon because HELOC rates are usually a little higher than mortgage rates.

Is a first-lien HELOC riskier?

All mortgages carry foreclosure risk if the borrower doesn’t make payments. Lien position affects the order in which lenders are repaid, but it doesn't change the fundamental nature of the risk for the borrower.

For the lender, a first-lien HELOC is less risky. This is because they’re first in line for payment if the home gets sold. 

How first-lien HELOCs differ from refinancing

A traditional cash-out refinance replaces your existing mortgage. You get a new mortgage that’s bigger than your old one, and you receive the difference in cash you can spend. Mortgages are installment loans  

A first-lien HELOC also replaces the primary mortgage. The HELOC is revolving credit, not an installment loan.

That structural difference is important. With an installment loan, you borrow a set amount and repay it over a fixed term. With a HELOC, you borrow up to your credit limit during the draw period, then repay what you've borrowed. You can borrow, repay, and borrow again as often as you like during the draw period, which usually lasts for a few years. 

A first-lien HELOC combines the flexibility of revolving credit with the simplicity of a single loan on your home. For the right borrower, it can be a smart way to put home equity to work.