But, it's not waterproof, not even very water resistant.

Therefore water/energy efficiency is of the tenant's concern and not mine, in addition to the condition of fixtures within the suite. 

Say, let me just say take your pick, the AVAC market is flooded with great companies more than qualified to take own such small fry.

I have made a number of capital project improvements including insulating the entire building, renovating one unit, and installing two new water heaters.

HVAC - you should be able to check the year that a furnace, boiler, or water heater was installed.

You when then need to determine the expenses on the property such as taxes, water, trash, electric, maintenance and etc.

I am long time listener of the podcast and I am so excited to connect with likeminded people.I am a part of the Quiet Waters Realty Group team through eXp out here on the east coast of North Carolina.

Values depend on location/gulf access, bridges, water/sewer assessments paid already, etc. 

It had a old oil boiler now putting in a gas boiler, using a new electric water heater for hot water.

Engineering, fire hydrants, water, sewer, office, landscaping, dirt work, water/sewer/electric to property, etc, etc.