What can you do with the equity in a house when it is signed over in a subject to agreement??

When you renew a lease, then you can choose to not renew or raise rents (may be subject to local laws).

I would reach out to a local RE attorney who specialized in evictions as like you said the courts are very backed up and youll have to still go through the Diversion Program (https://eviction-diversion.phi...). 

Subject property is not in NJ.

I'm not really interested in the topic but had to comment on your choice of subject title.

Make an offer with a refundable deposit of $5,000 subject to a 10 day inspection period so they know you’re serious.

Can I myself purchase the home from my husband and his sister (whom are the executers of the estate) using "Subject to" financing or have my husband seller finance it to me?

Your numbers are solid for some investors, others maybe not, very subjective.

Subject property (3 unit condo building in chicago Which I’m trying to sell , have it professionally staged and fully rehabbed 2 months ago I own a duplex down 42% of the building We ran into an issue with the unit above me stating that water had leaking form his kitchen sink . ( he stated that he water “dripping “ before he left for a 7 day vacation).

Another vote for rent. 2 more reasons. 1) They decide they don’t want internet, get it free from work, see it advertised everywhere for $50, or your version isn’t fast enough, so no longer pay for it. 2) you suddenly become subject to rent increase caps and you’ve set the rent below market forever.