Sweat equity included - framing, windows, siding, roofing, concrete flatwork, painting, trim, etc...Of course it was a lot of hard work building a house and working fulltime but we managed.

And a flat room for a nice, sunny roof deck ;)

Although I placed a 30 FT antenna on my roof top and I have one of the tallest building in the area, I wasn't able to get my WiFi signal out very far because the trees got in the way.Maybe you can avoid the interference issues I encountered, but how will you compete if Google give out free Wi-Fi?

All new electric, plumbing, subfloors, floors, wall covering, roof...everything!

My first rental has a roof leak , my regular roofer is on vacation for a month .

She did not know the age of the roof.

I have a property identified for potential purchase. 1920 2bed/1bath new roof,  pipes,  water heater. 

The 10% is good for regular maintenance but when the roof, the HVAC or the plumbing goes you had better have some capital reserves.

Just always ensure the property fits your strategy and meets your standard baseline criteria (roof, mechanicals, bones, neighborhood, interior, rental market of area, and desired CAP.) 

You're going to want to look at the expected life on the major systems...plumbing, electrical, HVAC, roof, etc.