If you are working full time, then $13.50/hr comes out to $28,080/year ($13.50/hr x 40hrs week x 52 weeks) or $2,340/mo - and depending on the sales price range you are looking in, how much of a down payment you are planning on putting down, and your monthly consumer debt payments (car loan, student loans, credit cards, etc.) that may just be enough to qualify. If there is overtime income and you've received it for at least 2 years, then that can also help you qualify too.
KC, MO has a wide range of sales prices - what is the sales price range you are looking in? Depending on the other variables, you could be looking as high as a $140k sales price.
What type of total monthly payment were you looking to have? That includes principal & interest on the mortgage, property taxes (annually divided by 12), homeowners insurance (annually divided by 12), and homeowners association fees (HOA fees they will be often abbreviated as).
As a general rule lenders prefer that to be no more than 31% of your gross monthly income, which would be about $725/mo based on $2,340/mo of income. However up to about 45% can qualify if you have good credit, which would be about $1,050/mo based on your income.
Using FHA financing (low down payment at low interest rates for people who don't have perfect credit) you could expect about a $100k sales price with a 3.5% down payment to equal a monthly payment of about $725/mo.
Using FHA financing you could expect around a $140k sales price with a 3.5% down payment to equal a monthly payment of about $1,050/mo.
What are your monthly consumer debt payments? Do you have a car/auto loan? Student loan payments? Carry balances on credit cards? The more of those payments you have, the lower your "buying power" will be.
Have you been saving up for a down payment? How much are you looking to put down?
Credit is also important, you don't have to have perfect credit, but your credit in the past 12-24 months needs to be relatively clean (longer for events such as a bankruptcy or foreclosure), and of course the higher your credit scores are generally the more easily of a time you'll have in regards to your credit being approved.