Does your lease have a house rules provision like the one below that would allow you to insert a rule governing how the tenant can water plants responsibly to ensure neighbors enjoyment are not harmed by the tenant's actions?

@Bernardo MazonYou may install a flue-less gas-fired insert (But it has to be under 40K BTU).

There are window inserts that don't require siding removal, but they may not be possible or as good from a water/air tight situation.Due to the age of the property, it is very possible that vinyl siding is installed over another siding.

Do not insert general phrases, such as “subject to inspections,” that do not identify specific repairs and treatments.)Looking forward to your feedback.

In this case, the first person's COC calculations, assuming a 'standard' 5% for repairs (or insert whatever number you want) will reflect lower returns than they will actually yield in those first 5-10 years.

Each unit has separate utilities and electric.2 units with tenants get all new appliances, new kitchen cabinets/granite counters, new light fixtures and a 'light' bathroom update (resurface tubs, update vanity and light). 2 units that were vacated were completely gutted and redone, including the above mentioned and new shower/tub inserts and plumbing. 

The other thing to do is a google search for "we buy houses (insert area here)" Go to all of the websites, and 9 out of 10 of them will have an area to sign up for their buyers list.

The fireplace, I just got one quote that it needed to be redone or get an insert, but I guess I can board it up and call it good. 

The sounds either like a dummy or trying to insert himself in the deal fir a commission. 

Insert it into your conversations.