From there, I had extra time and made some mistakes trusting sub contractors with the demo, my electrician took forever and overcharged for the majority of items done.

I took it upon my self to do all the work and saved a ton (demo, new floors and tile, stainless steel appliances, fresh paint and renovated kitchen/bathroom) it was a lot of work but I was done in about 2-3 weeks with some long hours after my day job.

I just bought a extreme case were owner lived there 10 years and acquired over 250,000 lbs of crap I had to haul to the dump cost me 60k  this included demo ing the house but the haul off charge alone was 40k .. if your putting 100 a month away 10%  for turn over which you should  and another 10% for cap ex which you should. 

I don't understand why those concepts are so hard for people to understand, it's HARD WORK, it's expensive, and sometimes it sucks because all your peers are going to Europe, buying huge amazing houses, and you're doing demo in a gross house finding drug paraphernalia!    

This small kitchen demo requires one guy 1-2 days maximum, and a garbage trailer.

Or perhaps in the demo phase, items are found that were not able to be seen prior to.

It could be a city department wanting to build a new library for example and they want to avoid the demo cost so they will offer the house free or at a very deep discount like maybe $2K to whoever show to have the wherewithall to move it and has a legal lot to move it onto. 

A bit more info.Rehab Estimate:$165k (more on this below)Timeline: 4 monthsWe've completed demo and are ready to begin the structural repairs and additions.

He has been paid $7000 for demo, new roof, and putting up drywall as well as mold/ water remediation.

@Darwin CrawfordCertainly would be a good idea to hop over here and check out the places to be sure you are getting what you paid for, heard a similar story a couple years ago here in Youngstown about an out of state investor buying up "renovated" section 8 property who ended up buying 2 vacant lots since the city razed the 2 homes before he ever made it out here since they were on the demo list.However.... a good property manager of course can be your boots on the ground here and save you the trip if you don't feel it necessary.