Maybe you could get a part time job somewhere. It will be tough as we have about 10% unemployment and it is closer to 20-25% for the youth. Legally in my state under 18 can only work a limited number of hours a week by law.
Your father would be making about $52k a year. If he has good credit and a dependable income he might be able to get a loan for about 3 times that amount. That would be around a $150k house.
I would consider living in a trailer on either its own or a rented lot. It might be a lot cheaper than the apartment. However, It looks like you could get a condo or normal house for what should be an easy monthly payment for your father.
He will need a down payment. That is money in the amount of 3.5% of the purchase price.
Below is a place to look for many different kinds of homes for sale. It is set for a 2 bedroom with 10 miles of your city. On the left column you can change the search settings for a more precise search.
Below is a 3 bedroom condo for $50k.
Below is a 3 bedroom normal house for sale in Vallejo for $58k.