For me plenty of guys can do demo, hang cabinets, move non structural walls, framing, tile work without pulling a permit.

@Damir Kamber  I haven't used it yet but judging by the demo both Newbie and Vet could benefit form this SS.  

.$1 / sq ft for painting (double if you're priming) (no materials)$1 / sq ft for carpet install & old carpet haul off (materials)$3 / sq ft for tile demo, install (no materials)$400 tub / shower tile surround (no materials)$25 / sq ft for granite demo, install (materials & labor)$35 per light fixture (resell grade)$100 per ceiling fan (resell grade)$16 avg. per blind - aluminum$42 avg. per blind - 2" faux wood$.70c / sq ft 18" tile$150 tub (no labor)$1.75 hard wood floor refinish (materials & labor)$275 per home inspection$50 per window pane replaced (standard size)Hope that helps

One day he needed help demoing a unit...

@Rashard Miller If this property is in Baltimore City, you will need all of the following to calculate what is owed: title search (for mortgages, judgments); lien certificate (for taxes, tax sale status, citations, violations, construction/demo/misc. liens, more).

In the case I mentioned, the flipper effectively demoed the building... and the concerns in your post really didn't apply. 

I found a few incredibly cheap houses- some need full demo and rebuild.

Hello,I bought a fix and flip property last year, did some demo to it and found that the property was not worth renovating(too much structural damage).

This is demo, paint, flooring, kitchens bathrooms, fixtures.

I have focused in on two properties, one is substantial acreage with a defunct house on it (I would consider it of no value and probably a liability for demo) and it has no lien.