A Home Equity Loan (also known as a 'second mortgage') is a type of consumer debt that allows homeowners to borrow against the equity they have built up in their property. Equity is the difference between the home's current market value and the amount you still owe on your mortgage. Essentially, you're using your house as collateral to secure a new loan. Lenders provide the full loan amount upfront in a single lump-sum payment. In return, the borrower agrees to a fixed repayment schedule over a set term, typically 5 to 20 years, at a fixed interest rate. This predictability is a key feature; your monthly payment remains the same for the life of the loan, making it easy to budget for. However, it's crucial to remember that failing to make these payments puts your home at risk of foreclosure.
Tapping into your home's equity is a straightforward process, but it all starts with understanding how much value you actually have available to borrow against.
At its core, your home equity is the portion of your home that you truly “own.” The calculation is simple: Home's Appraised Value - Outstanding Mortgage Balance = Your Home Equity For example, if your home is appraised at $500,000 and you still owe $300,000 on your mortgage, you have $200,000 in home equity. Lenders won't let you borrow against this full amount. They use a metric called the Loan-to-Value Ratio (LTV) to protect themselves. Most lenders cap the combined LTV—your original mortgage plus the new home equity loan—at around 80-85%. Using the example above:
So, even with $200,000 in equity, you could likely borrow a maximum of $125,000.
It's easy to confuse a home equity loan with its close cousin, the Home Equity Line of Credit (HELOC). While both use your home's equity, they function very differently. Think of it as a lump sum versus a credit card.
From a value investing standpoint, debt isn't inherently good or bad—it's a tool. How you use that tool determines whether it builds wealth or destroys it. A home equity loan can be a powerful way to unlock “lazy capital” tied up in your home and put it to productive use.
The critical question is: Are you using the loan to acquire an asset or to fund consumption?
The most important consideration is risk. When you take out a home equity loan, you are placing a second lien on your property. If you default, you can lose your house. This dramatically reduces your personal Margin of Safety, a concept championed by Ben Graham. Before signing the papers, you must be absolutely certain that your plan for the money is sound and that you can comfortably afford the monthly payments, even if your financial situation changes unexpectedly.