If you were only measuring on principal pay down I guess you’re guaranteed to hold for about 7-8 years before you sell.

Should all energy efficiency measures be a choice? 

L&I isn't measuring building heights.

GC quoted ~$1200 in labor, so we've saved ~$1k on window and install costs but I've had to source and pick up the windows as well as help my day labor measure them all.

At the small multi family level (2-4 units), comps are a more reliable measure of value.  

Rents are not as high as the sale price in proportionate measure.

The guide should help you measure that.

What are some of the measures i can take to ensure it does not get worse.I am just scared that some day the house will just fall off.Please advice if i should sell the property or what measures i cant take for this.

Whether they list a property incorrectly, don't know how to fill the forms out, over price it, don't ant to actually measure the actual sq footage, don't understand how investors buy (for properties that don't qualify for a residential loan), skip bed/baths in an illegal unit, don't have enough experience to understand market rents/value ect ect ect.  

Have you Dad give you a loan for around 100 million dollars and inherit part of his properties as well as your grandfather's organization (Trump Organization), and there you go.With the 100 million and real estate network already in place, you have the sufficient leverage and wiggle room to take the necessary risks and scale at a fast pace, then make cutesy catch phrases to impress naive teens and the uneducated.In conclusion, prey on the poor and weak, take aggressive measures against them, keep raising rents in these units while avoiding maintenance, and use the large cash flow to buy marquee properties in cities after multiple generations and 50 years of the money working for you.Capiche?