Is there anything I can do to ideally get them to not list the house and sell to me, I’m assuming there might not be many options, especially since the sister and I had agreed on a price that was below market value given I was planning to invest money to remodel the home and was planning to honor his wishes of not having the home knocked down to make a townhome or new home.

Cold call, Door knock, contact people you know, make videos about the area and then message your followers

But if you have this in writing from the builder that you have received a waterproof basement and it's not waterproof, it seems to me you should be knocking on the builder's door to fix that problem.

I also think I’m going to knock out the debt I have hanging around to lower my DTI… and hopefully those two things combined will help us qualify! 

Contact the homeowner via postcard or door knocking.

Personally, if I had the chance to do it again I would put down more money to knock off private mortgage insurance and increase my cash flow.

Long story short, my rate was knocked back to 2023 and policy will be renewed.

Depending on your skill set and time would you be able to go and knock out what is needed in a couple weeks?

Im not knocking these people, but there is a reason there are professionals around doing this all day long in the first place 

Living on-site will have you being interrupted with door knocks on a regular basis.Now, if your PM is mediocre or worse, plan on doing a lot of learning or find a better one.