I found BiggerPockets on YouTube and immediately transitioned to the podcasts, I listen to at least one a day. 

I would like to do substantial improvement to the property by building additionand increasing square footage by about 200%.

Lastly, be flexible in TI (Tenant Improvement) you're willing to provide to your potential tenant.  

If I could go back in time I would have sold all my luxury lease options before getting stuck with 14 houses, when the market tanked back in 2007, I lost everything but I am now looking forward to doing it all again now that the market is improving, so I know how to get in but knowing when to get out is more important.

I meant depreciate 2/3 of costs for building improvements. 

So she has not had any tenants in house as she does not want to be a landlord.What should I look out for, as well as what improvements should I look into to help attract good tenants?

I have read number of blogs, YouTube videos, countless hours of research, deep thinking on RE (big picture stuff), also been to a real estate workshop.

It's in an area I am fighting to improve.   

I understand wanting to improve your primary residence.  

From what I have seen so far, this site has has incredibly awesome members helping others and improving their own lives in the process.May this new year be a prosperous one for you,Cloud