A second mortgage means you borrow money against your home while you still have your original mortgage. It’s an extra loan secured by the same property, so if you fail to repay, the lender can claim the home after the first mortgage lender gets paid first.

What it means

  • Your first mortgage is the main home loan you used to buy the house.
  • A second mortgage is another loan on top of that, usually based on the equity you’ve built in the home.
  • It does not replace your original mortgage; it adds a second repayment obligation.

Why people use it

People often take out a second mortgage to cover big expenses like:

  • Home repairs or renovations.
  • College tuition.
  • Debt consolidation or other major costs.

Main risk

Because the loan is tied to your house, missing payments can put your home at risk. Second mortgages are also usually riskier for lenders, so they can come with higher rates or stricter requirements than a first mortgage.

Simple example

If your home is worth $400,000 and you still owe $250,000 on the first mortgage, you may have $150,000 in equity. A lender might let you borrow part of that equity as a second mortgage.

If you want, I can also explain the difference between a second mortgage , HELOC , and home equity loan.