I am going to buy a fixer upper and want to customize the house as per my specific needs.

How do i obtain financing for the remodeling since I will have only 10% equity (which is the downpayment) in the house?

Does the remodeling company offer financing?
Can i get a loan from the mortgage company itself to remodel the house? I don’t have equity in the house so if there is a provision to do something like this then can someone please explain it to me

Thanks