The approved contractors have to meet insurance guidelines (often not met by an average company), typically are certified by national and state agencies in home energy efficiency, and invest around $10k in energy testing equipment just to participate.

A general maintenance tech or handyman may not have the expertise to certify a leak that is especially mysterious. 

Often times you can (if you wish) adjust other aspects to compensate for a needed change.

It doesn't take long to make tiny adjustments on the dashboard.

@Bridget Grant - in terms of your plans going forward, I recommend doing a risk adjusted minimum investment to get up and cash flowing while you get things sorted out with your lawyer.

Hello @Greg Scott Thank you so much for taking time to review and provide insights. i have made adjustments to my analysis based on the provided feedback. here is the updated  Chart. please suggest if i am missing any thing else.

Make sure they are certified with the American Society of Cost Segregation Professionals (ASCSP).

These are absolutely very valuable information to help me adjust my strategies!

I had to learn to adjust my numbers based on those factors and more. 

Tenant “Lock-In”: Long-term tenants may prevent investors from adjusting rents to market rates, limiting income potential even as property expenses increase.