What Happens to an Existing Home Equity Line When You Refinance the First Mortgage

When you refinance, the old first mortgage is paid off and released, and a brand new loan is recorded in its place. Liens are ranked by recording date, so if nothing else is done, the home equity line, which was recorded second, moves up into first position and the new refinance lands in second. That is the entire problem in one sentence.

A lender writing a first mortgage is pricing and underwriting on the assumption that it sits in first position, meaning it gets paid first if the property is ever sold or foreclosed. It will not fund a loan that quietly becomes a second lien.

So before your refinance can close, something has to happen to the equity line: it either agrees in writing to stay behind the new loan, or it gets paid off and closed. Those are the two doors.

Subordination is a recorded agreement in which the equity line holder consents to remain in second position behind your new first mortgage. The line stays open, your available credit stays available, and the account number does not change. This is the path most people want when the line has a favorable structure or when they intend to keep using it.

You request it through the institution holding the line, usually with a subordination request form, and the request is underwritten. The lender is deciding whether it is still comfortable sitting behind a new loan, so it typically looks at your credit, the new first mortgage amount, the current value of the home, and the combined balances against that value.

Subordination requests take time, often weeks, and they are not guaranteed. If the combined lending against the property is climbing meaningfully, or the line has terms the holder would rather not preserve, it can decline. Building that timeline into the refinance from the start is more comfortable than discovering it late.

The other path is folding the equity line balance into the new first mortgage, so the line is paid off and closed at closing and only one lien remains. For borrowers who drew on the line for a project years ago and have been carrying the balance since, this can be the cleaner outcome, since it consolidates two obligations into one.

One thing worth understanding: when a refinance pays off a home equity line, many lenders treat that transaction as cash-out rather than rate-and-term, particularly if the line was ever drawn on for something other than buying the home. Cash-out has different underwriting standards and different pricing, so it changes the shape of the file even when no money reaches your pocket.

Whether the line stays or goes is not purely a math question either. A seasoned line with a long draw period left is an option you already hold, and closing it means reapplying later under whatever conditions exist then.

A common surprise: an equity line with a zero balance still holds a recorded lien. An untouched line you opened years ago and forgot about still has to be subordinated or formally closed and released before a new first mortgage can record in first position.

A zero balance does simplify things. There is nothing to pay off, so if you no longer want the line, closing and releasing it is straightforward. If you want to keep it, you are still filing a subordination request and waiting on that decision.

The practical step is checking your title early. A property search shows every lien recorded against the home, including old lines you may have assumed were closed when you stopped using them.

Because a subordination is an outside approval, it usually sets the pace of the refinance rather than following it. The request generally cannot go in until the new loan terms are known, and the equity line holder works on its own schedule, so the sequencing matters.

If you would rather not depend on another institution's timeline, paying the line off inside the refinance removes that variable entirely. If keeping the line matters more than speed, subordination is worth the wait.

Either way, the decision is better made at the beginning of the process, alongside how much equity you want to access and what you want the structure to look like afterward. You can see the general product landscape on our loan options page.