I see these companies offering to help you build your business credit by offering to sell you an "aged corporation," as if the simple fact that a corporation is old is going to induce a lender to make a loan.

Homes that have sold recently that are similar in age, and size.

(with names, relationships, ages, phone numbers, addresses, etc.)3.

What makes discernment difficult is the age of our buildings (100+ years old with unusual building methods, etc.)Thanks so very much for this advice.

This has nothing to do with any depreciation you've taken on the property and everything to do with the age and lifetime of the damaged items. 

Great question @Rick Turman  Are all the duplexes and the SFR built from the same materials, similar age of HVAC systems, plumbing systems, electrical systems, same roof type & age, similar appliances, etc?

Hughes told one of his earliest investors, Alaska’s state oil fund, that he imagined the sort of tenants he wanted—families with school-age children—and then went looking for suitable houses in good school districts.Nashville’s foreclosure rate never exceeded 2%, so American Homes approached a local builder, John Maher, who had been renting unsold homes in his subdivisions.

I have set up some pretty specific searches for clients based on areas they want to buy/invest, age and type of homes, features, price, days on market, even types of utility service and such (gas, oil, electric), etc.

That mostly has to do with "tech" but those people are aging fast. 

I stepped out in 1997 at the age of 29 when my kids were 2 and 4 and have never looked back.