Second Lien (Junior / Second Mortgage)
A subordinate loan recorded behind a first mortgage, repaid only after the first lien is satisfied in a foreclosure. Riskier and pricier than first-position debt; used for gap funding and equity access.
A second lien — also called a junior lien or second mortgage — is a loan secured by a property that sits behind the first lien in priority. In a foreclosure or sale, the second-lien holder is paid only after the first lien is fully satisfied. That subordinate position makes it riskier for the lender and therefore more expensive for the borrower.
How it's created
Second position comes from recording order (lien priority). When a property already has a first mortgage, a new loan recorded afterward takes second position. Common examples: a home-equity loan or HELOC behind a primary mortgage, or gap funding recorded behind a hard money first lien on a flip.
Why it's riskier and pricier
Foreclosure proceeds pay liens in order. If a property sells for less than the combined debt, the second lien absorbs the shortfall first:
| Lien | Position | Balance | Recovers at $215k sale |
|---|---|---|---|
| First mortgage | First | $200,000 | $200,000 |
| Second lien | Second | $40,000 | $15,000 (loss) |
Because the junior lender can be partially or fully wiped out, second liens carry materially higher rates and tighter terms than first-position debt.
How investors use second liens
- Gap funding on flips. A second-position loan can cover the down payment or rehab shortfall above a primary fix-and-flip loan — though many first lenders restrict or forbid junior financing, so it requires their consent.
- Accessing equity without refinancing. A second lien (or HELOC) lets an owner tap equity while keeping a low-rate first mortgage in place — useful when refinancing the first would mean giving up a good rate.
- Seller financing. A seller may carry back a second lien for part of the price.
Key cautions
- First-lender consent. Most senior loan documents prohibit additional liens without approval. Recording a second lien in violation can trigger a default on the first loan.
- Combined leverage. Add the first and second balances to get your true combined LTV (CLTV) — that's the leverage that actually matters for risk. Stacking a second lien on a highly leveraged first can leave almost no equity cushion.
- Subordination. When you refinance the first lien, the second-lien holder must usually sign a subordination agreement to stay junior to the new first loan; they aren't obligated to, which can complicate a refinance.
Used carefully on a high-margin deal, a second lien adds leverage; used carelessly, it compounds risk and can violate your senior loan terms.
Frequently asked questions
What is a second mortgage?
A loan secured by a property that's recorded behind an existing first mortgage. In a foreclosure it's repaid only after the first lien is fully paid, so it's riskier for the lender and carries a higher rate. Home-equity loans, HELOCs, and gap funding are common second-lien examples.
Can I get a second-lien loan on a fix-and-flip?
Sometimes, as gap funding behind your primary loan — but many first-position lenders prohibit or restrict additional liens, so you need their consent. Recording a junior lien without approval can trigger a default on your first loan. Always check your senior loan documents first.
Why is a second lien more expensive than a first?
Because it's subordinate. If the property sells for less than the combined debt, the second-lien holder absorbs the loss before the first lien does — and can be wiped out entirely. To compensate for that higher risk, second liens carry materially higher rates than first-position loans.