Those databases are not even currently interconnected and accessible to the federal government.

Illinois is a booming market for solar, you have great interconnection, net metering, and SREC policies there. 

It looks like Cincinnati you MUST have photo, they RECOMMEND both photo and ion, they RECOMMEND interconnect only the carbon monoxide alarms (does this make sense), you CANNOT install in a  kitchen or within 10 feet of heat, you MUST have smoke in the bedrooms, you MUST have Carbon Monoxide outside the bedrooms. 

For better or worse, the markets are now completely interconnected.

I'm new to BiggerPockets and find the site vast with tremendous interconnectivity for RE enthusiasts - from new to highly experienced.

You may find the answers you seek there and of coarse on the vast interconnecting cables we call the internet.

Ex: hardwired/interconnected smokes, window screens and blinds, exterior paint, etc- ARV - your ARV of $110 seems pretty accurate to me, but definitely a good idea to connect at the meetup with others that have had appraisals done and see what their appraisals are coming back in at.Good luck and hope to see you this week at the meetup!

At the end of the 10 years you throw away the entire smoke detector and install a new one.One place here requires that smoke detectors be hard wired AC and interconnected to every detector in the building.

Any grid-tied form of generation needs to have an interconnection agreement/net metering contract with the utility in order to benefit from net metering.

In the simplest terms, it is the assembly of building components produced in a controlled environment into modules from which the finished modules or units are shipped to the building site and installed and set by cranes and interconnected to construct the finished building.The number one reason why this alternative method of construction is beneficial is the speed of which the finished building is constructed.