We didn't furnish the individual rooms, but as both my business partner and I are living here, communal areas are completely furnished. 

I'm under contract for an apartment that has 20 bedrooms. 15 of which share 3 communal bathrooms and a kitchen and are all upstairs (2 stories total).

. - No communal spaces were affected during the renovation.- The city inspector looked over the work and has said everything is up to code - so no issues there I just have to get the permits processed. 

.- New doors, new windows everywhere- all new plumbing everywhere- Foundation repair for main fourplex -Brick repair for fourplex-Brick and complete exterior painting of all structures-Awning repair-Communal entryway to fourplex remodel -Replace beams for detached unit and replace with one larger beam that allows for 2 full size vehicles to be parked there, then refinish the space with paved concrete and add commercial rollup garage doors to be able to fully secure the spaces.

I guess my question is how would you structure a lease in this situation where they all communally pay for the whole house together, equally, but do not all have equaly "skin in the game" when it comes to security. any feedback would be so appreciated, thank you  

I buy 2-4 units, rehab all the units, professionally design each unit as well as the shared communal spaces and rent out as short term or medium term rentals.

Now my problem is I remodel houses and materials are expensive and often you have useful supplies that you don't want to throw away like half a sheet of drywall a third of a bucket of red guard, etc.Has anybody else who hates to throw good stuff out but who lacks warehouse space ever thought it would be great to have an app or communal warehouse were the local construction guys could just trade stuff like a college share box?

I am not sure sellers will be forced to meet demand, they could just pull off the home and sit tight until the market equilibrates.

Although this is a single family home, I rent it by the room to college students at the local university who want a communal living space, functioning similarly to a frat house.

All the common areas are communal use and basically you are hoping everyone gets along.