Since the tear off is done you can probably find someone to roof it for pretty cheap.

For example, I almost always tear out carpet and replace with tile or trafficmaster, so my flooring costs are often higher than other landlords (at least initially).  

Most people will not foot the bill, usually in the $3-5K range, to tear down a Mobile.. move it.. and then set it back up.  

Seller has also agreed to a 1yr home warranty and termite treatment as evidence of termites were found during inspection)*roof is old, will need complete tear off when it's time to replace.

Most of the homes here were built in the 50's and 60's but within the last 5-7 years, there have been many tear down/new build projects in the area with very large homes (3000-4000 sqft) ranging anywhere from 500,000-1.2 million.

Keep in mind some things won't show themselves for awhile, a house usually gives up most of it's ghosts in a 1 year cycle, this allows it to go through the seasonal changes of moisture, expansion and contraction and tear itself apart where it needs to, tile floors will show cracked grout within a year, letting you know they weren't installed with proper underlayments, drywall will crack at doors and windows showing the house movement do to soil getting wet and drying out where it shouldn't, the basement will get wet showing you where the freeze thaw is effecting it, paint in bathrooms will show mold in a year showing you that the flipper didn't vent exhaust fans properly and the list will go on and on... 

It involves tearing down and rebuilding completely, so its alot of work for my partner. 

There isn't much land left in the city so builders are buying dilapidated houses and tearing them down.

Bad extreme; tenants are students and if not screened good could really tear the place up and make maintainence a big issue.

Either gut and convert to single family or tear down and build new.