I believe I've found my niche and I've read many articles regarding BRRRR as well as case studies.

Not wanting to go down too low and banking on the fact that the husband believes in the saying "happy wife, happy life" I countered with 150k and luckily, they accepted.

Although I believe Philadelphia does lis pendens, not sure what Act6/ Act 91 are. 

The guy on the lease has leased the 2bed/2bath apartment for 1.5 years now and I believe he has done this for a quite a while to save money.

I am not familiar with the CO code, but I believe this is on the landlord.In Colorado, the Colorado Revised Statutes (CRS) include a definition of habitability and legal remedies for tenants living in units that do not meet the definition of habitability. 

However, I have a no-excuse mentality and believe there are tremendous opportunities to be successful for those that are willing to grind for them.

If she's got a business though she is able to reinvest any profits back into the company or she could buy stocks with it, etc. and wont need to claim income until its cashed out to herself I believe.

Yes, because the homeowners (wrongly) believe that their incentive to own a home has been removed.

With all the work and oil out here they are building like crazy.

Im located in Houston, Tx and believe its a great market to invest in.