Biggest hurdle for me right now is that I'm not at accredited investor status yet. 2022 will be the first year that my wife and I meet the joint income requirements.

Time to accept that the knees and body are shot and retire to my wood shop and VR headset.Sold my first one last year to the current tenant without a broker on either side and it worked out well for each of us.My second one is up for sale now, tenant wasn't interested.Tried a broker and that was not a great experience, he listed it on MLS and never once did a showing or visited it after the initial contact, I had to meet all appointments and do the walk throughs and sales pitch. 

I have some ideas and could be interested in a joint venture. 

Was the referenced bank account a joint account?

To satisfy the law you will need to open a new account and have it either be a joint account, or a proper escrow account to satisfy MGL. 

Another option may be to have them give you the $100k, put it as a loan on the property then have a joint venture agreement that states what percentage of rent they get and when you sell the property they get a percentage of the profit.

Thus far, we've been investors purchasing our own properties but we have an opportunity in that a family member is open to selling their 30-unit apartment building. It's our largest deal yet and to be able to pay in w...

You can also consider a joint venture to leverage your funds.I’m doing this now.

My first deal I needed 2 Joint Venture partners to get it done (one for capital and one for experience).

Etc.Once you have gone through those initial questions, I would visit a real estate attorney who specializes in entity creation or joint venture agreements with real estate.