At a 50,000 high level view, appr 2% of your income. Add to that taxes and insurance and the total should not be more than 36% of your monthly income. That hugely vague number will represent about 80% of the price of the home you can buy.
Those numbers will let you know if you are in the ball park. There are 1,0000 reasons and 1,000 more that a big bank lender can and will create to guarantee you are left at the buyers alter 4 days before closing. Don't allow your shadow to cross the threshold of a big bank.
What you should do is pick up the phone and call a Freehold REALTOR to discuss your situation and real estate needs. Your REALTOR will be able to direct you to the lender with a proven record of delivering financing solutions for folks just like you, needing real estate just like yours, with goals mirroring yours....and hold the lender accountable for their actions.
In this market it will prove essential your lender is able to provide for you the resources allowing you to make an authoritative purchase offer. Such authority is not present in a pre-qualification or a pre-approval. Both have allowed lenders to abandon buyers at the alter. Have your lender, or my lender, provide you a 'CLEAR TO CLOSE' before you start shopping for a home, This means you have passed the lender underwriting FIRST and you can now, with the assurance you have the money, close in DAYS! Now that is a purchase offer with authority.
Pick up the phone and call a Freehold REALTOR.
Best of success,