However the aesthetics of modular houses are more modern (sell easier) and the turn around time reduces carrying costs substantially.

They will suck you in and waste your time and energy if you allow it.  

Raise revenue or reduce operating expenses or both.You might run into explanation that seems circular - value is calculated based on cap rate but cap rate is calculated based on value, it's like watching a dog chasing its own tail over and over again ... at some point your brain will explode :-) As stated above, the breakdown in the logic is the fact that some people think they can alter and calculate cap rate, this is incorrect.

.- Watersense or other water conservation methods with showerheads (the biggest drain on water bills other than leaks and loos) are often cheap and easy ways to reduce the bill with little to no impact on the tenants' lives.- LLC name can be anything you want, but I'd certainly think purchasing this and holding title as an LLC makes sense for a 14-plex.   

In Pennsylvania, you can apply for homestead exemption at your local assessment office and it will reduce your school property tax for your primary residential residence. 

Down the road as you do more deals, then yes you have a reputation.You will also hear people say on podcasts that leverage reduces risk.

I just got a triplex under contract in Tacoma, Washington, and during my VA loan process I learned that I can get up to $6k in energy-efficient improvements attached to my mortgage.

I follow the BRRRR strategy so most of the properties have been rehabbed which I believe reduces calls.  

Exterior landscaping and hardscaping but mostly just better maintenance and reduced expenses (negotiating vendor contracts and just being more responsive so that little issues don't become big ones).

There's so much to learn about real estate in general, that I think the initial learning is really done best in our own back yard, and then once you feel your learning is tapering off, and feel reasonably confident about being able to buy a decent investment in your local area, then I'd say at that point it would possible be OK to branch out to other areas - if you're willing to put the time, money and energy into becoming familiar with those markets.I hope this helps, and as I said, lots of people have different opinions on this topic.