I am not a licensed realtor, I am just speaking from experience - Resale is a consideration, however it can be a negotiating factor to help a deal - you could have it installed in lieu of offering closing costs?

The cost of this can vary quite a bit based on a number of factors, but especially if the property has older wooden windows (it can take a while to test all their components). 

Terry thanks for the link it's pretty much excatly what I've been looking for.

I would think this multiple might be applicable to other markets, but as with everything else in real estate, there are probably a lot more factors to consider. 

Would you choose to live in the top or bottom and what factors would influence your decision?

After all our expenses are factored in including insurance, management, etc. 

@Jim Jaworowicz I don't see any reason to be wary of it, but I would acknowledge that it's a strong factor in my decision. 

At Origin, we use sophisticated risk models and the deep knowledge of our acquisition team spread over eight markets to account for the many variables involved in evaluating the potential returns of a new property.Here are eight risk factors investors should consider when evaluating any private real estate investment:1.

The boiler on premises resembles the setup in the picture in the link. 

If so, any agent can look into the agent view on a property and see the numbers you are looking for.If this is a deal you are looking to buy directly from an owner you will have to depend on them to get you the info you need.Either way, when purchasing properties with inherited tenants make sure if you get any inclination that the tenants are undesirable that you are factoring into your offer and underwriting the cost of getting the current tenants out, the turnover cost of renovation, and the money lost from the vacancy.