Please come to terms with that because if you're looking to turn that 10K into 20K or 100K, it won't happen overnight and it wont happen easily.

If it is the main entrance for 2 units, people are moving in and out, linoleum is easily damaged moving large objects in and out.

Watching his RE instructional youtube videos I've learned a wealth of information that would easily cost 1000's of dollars alone at seminars, meetings etc.

Replace easily accessible lines asap,  buried stuff as needed or if doing major remodel. 

It is easily ventilated outdoors without any consequences. 

Learn From IKEA:  Your homes must be easily accessible, appointments must be easy to get, you must work around their schedule, and absolutely must answer your phone.  

A lot will depend on how far they got with the plumbing and electrical, what was already permitted and inspected, and what was just abandoned.You will certainly need a GC to deal with the permitting and inspections.It could easily be $50k to $100k or more, depending on what has been done, what hasn't been done, and what has to be re-done.That being said, a friend gave me some excellent advice about estimating rehab costs once that I've never forgotten: "Add up exactly what you think it's going to cost, then double it!".

This can easily add $1,000+/yr to your annual expenses.

Price data, and rent value can easily be found on zillow, but market based data is a bit harder to find.I've been scouring the web for economic and city planning information (Iowa market mostly), but most of it seems like promotional material for getting businesses into my state.Here is the sites of been using to pull basic city data, statistics etc.http://www.deptofnumbers.com/rent/http://www.city-data.comhttp://www.bestplaces.netWould love others to chime in as well.Best,Michael

However, it could just as easily be acquired through a contribution of new capital by stakeholders (shareowners).