As a vague, broad and more of a science fiction reference we have the sun that is continually putting inputs into our system and entire planets that are within reach that dwarf the resources that we have.

This answers so many questions I probably would have had in the future.If I could jump on and also ask a question:What is the best system for paying general contractors during a project?

HelloI'm learning that organizational systems are key to managing property and that side of the business.

An ISP would just drop a router in there and already have an authentication system built for your type of setup.

Oh.. .we actually encourage it and think it's one of our most unique and valuable commodities.  

I'm sure we'll figure this out, I'm thinking it's a matter of restructuring our systems and schedules.Is this your first?  

@Robert, don't mean to point out the obvious, but if you have an address and/or a name you can get the phone number from the local phone book. www.intelius.com allows you to do reverse searches and I am sure there are many other sites that can provide that info.To all...I have found that most counties have what is called Geographic Information System or (GIS).

In my experience communication will be very form based and system based.

Keep in mind that many companies have salespersons to do their estimates (and @Nicole W. and @Russell Naylor) and may not ever step foot on the roof (if only for insurance reasons).Unless there is something pretty unique, estimating roof work is fairly simple.  

Nina is passionate about real estate as one of the best investments over time and feels very fortunate to be living and working in this city of a culturally diverse population, unique architectural beauty, breathtaking historical buildings and museums, and astounding lifestyles.