how many years since you completed the BK process?

If you apply for a loan (and they 'pull credit') and you are turned down, the lender is REQUIRED BY LAW to provide a reason you were denied.  have you asked them? 

They said I was denied because of the price I paid for my home. I only paid 11,000 because it was a foreclosure. We gutted it and rebuilt it. Most sites state it’s now worth 90,000 besides the work on the outside, we had a survey done and we own more land than what was originally listed in 1968. I’m confused and getting impatient. I don’t know how else to get a loan to finish the construction I would like, not what it needs. 

My bankruptcy was in 2015. I understand it stay there for years but I’ve busted my butt to make all payments in time and have 0 credit card debt and all my student loans are paid off.

the fact that the BK was only 4-5 years ago is the problem.  Normally, it's 7 or so years under traditional lenders feel comfortable lending to someone who has gone through BK.

But that is 'traditional' lenders.  What you'll need to do is ask around - start with mortgage brokers - and see if they know a non-traditional lender (and I am not talking 'loan shark!) who is willing to lend in this situation.

do you have a recent appraisal to substantiate that the home is worth $90,000?