If you wanted to, you can even skip-trace the bad addresses to find where the owner moved to and target the right address.For fulfillment you can do it yourself to save money if you're broke, but ultimately if you want better response rates and focusing your time on value-add, then you'll want to outsource fulfillment to a shop that has economies of scale and can offer you great rates.Remember, a campaign usually doesn't get a response until 3+ mailings.

They are aging on the market, if they ever get rented I imagine they will face turn over when the tenants start getting their electric bill.Additionally, I had a neighbor's tenant with electric heat skip out on a $500 electric bill and they threatened to not turn on the service until he proved they were evicted (which the weren't because they left), eventually he convinced them to do a walk through.If you are pulling radiators then any competent plumber can switch the unit over to natural gas baseboards, the boilers are super efficient and you will have an advantage by supplying heat.

My mistake when I read mulitfamily is skipped right over the 2 family part.

And likewise, don't skip on an improvement either.  

Some said the guy died some said he just skipped town.

I guess if I'm going to be a personal guantor regatdless, I'll probably skip the llc and get insurance. 

@Alex Hamilton I had to skip to a reply before I read all the responses after yours because I really love this, "Buy something below market, sell it or rent it for a profit.  

Skip any national Bank like Wells Fargo, Bank of America etc. 

@Clayton Smith -  Skip all the guessing and speculating and take this to the best commercial broker in your area. 

Depending on the size of the complex, no one likes to do more pro bono work.I'd say skip and buy something else not in an HOA.