I would be more concerned about the brother in law potentially moving out mid-lease and leaving the couple.

Hello need suggestions/advice...own a business with property...Land next door was approved for Mixed Use Construction (Retail on bottom residential on top)..Construction has begunMy business is slow and is affecting bottom line..may need to relocate business and have developer build on my property...Would like to keep property and build same as next door(numbers will be easy to get including approvals) ...looking for investor ..Afterbuild units can be sold or rented...For exist plan total improvements $2.3+MPlease let me know thoughts....suggestions time sensitive..Thank you

Why is this new partner wanting to be added to the lease.  

So, the sooner you evict the better.If you are worried about embarrassing holiday events, hire a Property Management Company and let them be the bad guys.

But to really answer your question - from an outsider's view - things have tightened up and continue to be tight....deals are harder to find, and interest rates make some good deals just average.  

If they can do it and be a resource for you, there is no reason you can't. 

With a Condo, couple things to note:1) Financing can be a challenge, but as long as the building is in good condition, you should be fine.

Picking the right agent is key because, let’s be real, everyone sounds great until it’s time to deliver.

Welcome to the community and be ready for a huge amount of information at your finger tips.

I would not consider a house that cheap to be near a B.