Are there any legal and logistical considerations I need to be aware of in this situation?

I don’t have detailed financials on the laundromat as they just did the bare minimum to keep it open, and I want to go in and add value.

I'm sure you only intend on helping people so, this shouldn't apply to you.Home Matters USA | The Department of Financial Protection and Innovation (ca.gov)

We encourage all potential investors to conduct thorough due diligence, assess their own risk tolerance, and consult with financial professionals before making any investment decisions.As for our number of investors, we are fortunate to have a large and diverse investor base.

Make sure you get your financial house in order first -- decrease debt, increase income, & maintain a good credit score.

I've done a lot of searching, but havn't found anyone with a situation quite this niche.I am a 100% commission sales person for a new home builder.

You could certainly "be in the right" regarding getting screwed over by the builder but this is a situation that is going to be very very risk for a hard money lender - typically stay away from unfinished rehabs/builds due to running out of money.Your best bet I would say is to find a local private money partner (maybe as more of an equity investor) or to try to finish one first and then re-evaluate, instead of trying to borrow for rehab on both

Today, I wrote to Joy Gendusa, CEO/Founder and explained the situation.  

Jesse,Depending on the situation it may be possible to get some kind of Group purchase. 

what we do if we want to waste time on this is to get the judgement at small claims.then there are methods to garnish.. although I will say its rare that anyone collects anything in these situations.