Buying isn’t about age, it’s about need, income and finances.

Your down payment is already fine. Regarding need, you should be stable in the area, stable in your job, and anticipate owning this property at least 5 years. Regarding income, your monthly mortgage payment (including taxes, homeowners and HOA) should be under 28% of your gross (not net) monthly income.

If all that’s true, it doesn’t matter if you are 22 or 82.