How Old Do You Have to Be to Buy a House?

Are you starting out as an adult and looking to get a jumpstart on home ownership? Or do you have a child who wants to buy a home and you want to know the rules? Regardless of your situation, the legal requirements and mortgage qualifications are largely the same: you need to be at least 18 years old.

How old do you have to be to buy a house?

In the United States, you must be at least 18 to enter into a legally binding contract, which includes a purchase agreement and mortgage. Some states have different age thresholds — 19 in Alabama and Nebraska — but 18 is the standard. There is no maximum age limit.

Age is just one part of mortgage qualification

Meeting the age requirement is the easy part. What lenders really evaluate includes:

Credit score

Your credit score needs to meet a minimum threshold depending on the loan type. Most conventional loans require a 620+, while FHA loans accept scores as low as 580 with 3.5% down.

Young buyers often struggle here because they haven't had time to build credit history. Starting early matters — even a teenager building credit through a secured card or credit builder account will be in a much stronger position at 18.

Credit history length

Beyond just the score, lenders look at credit history length. A thin file with only a year or two of history makes qualification harder, even if the score is decent.

Income and employment

Lenders want to see stable income. Young buyers who are just starting their careers may need to demonstrate consistent employment, often 2+ years in the same field.

Down payment

You'll need funds for a down payment — typically 3.5% for FHA or 3–20% for conventional loans. First-time buyer programs can help reduce this requirement.

Debt-to-income ratio

Lenders evaluate your debt-to-income ratio (DTI). Student loans can weigh heavily here for young buyers.

How to prepare as a young buyer

The best way to prepare is to build credit as early as possible. Open a credit account, make every payment on time, and keep balances low. Even 12–18 months of positive history can be enough to qualify for your first mortgage when combined with stable income and a down payment.

Review the full first-time home buyer tips checklist and consider getting pre-approved early to understand exactly where you stand.

Conclusion

You need to be 18 to buy a house in most states — but the real preparation happens in the years before that. Start building credit early with Kikoff — no credit check required to sign up.