They’re heated on a hot surface, usually a nail, and then inhaled through a dab rig. "   not legal...These are condo'd units, where we own several but there are other owners/tenants. 

As it stands, the house is a 1960's 3/2 - 1525 Sq' completely gutted, has no AC, no central heat, not flooring and original windows... just exterior walls, roof, and bare studs.

The house was renovated a bit in 2012 (nothing too fancy), including a new roof, has window unit a/c, gas heat, and includes lake rights to a chain of lakes (although its not right on the water). 

I use The Mackey Team A/C & Heating and have found them to be down to earth and reasonably priced.

Older buildings what will kill you is underestimaing essential capital expenditures like roof, heating systems etc.

If they lose their job or get reduced hours and have little or no savings, they will buy food, keep the heat on and car going before they pay your rent. 

Seller pays water & garbage for all units and heat & electric for Unit 2.

It is 49 years old copper wiring and I have heavily invested in extensive rehab outside and inside, replaced most a/c and heating, Fully gated, no pool, also just put an all new roof in it without any insurance help. 

I am looking to add heat to my attic and I have so far had 3 companies come out to look at the project and provide me with a quote.1 of them gave me an answer on the spot but the other 2 have not reached back out to me and it's been long enough for me to think they won't be reaching out at all.Is this common?

2) This building is being heated by 1 big gas boiler and is relatively new.