Solar Panels

This also is becoming a very popular item being added to homes where home owners are environmentally aware or just looking to reduce costs. There are some concerns however: 

First is the roof structure adequate to support the added weight? Ensure the installation is done by competent contractors as moisture is the enemy of the home and once you even walk on a roof damage can be done, let alone when mounting a myriad of supports and structure up there.

Is the roof in a serviceable condition prior to installing the panels? Although given 10 - 15 days the installer likely will be willing to remove the panels and then reinstall them after the re shingling is complete at no charge ( check contract for specific details) I'm sure they wouldn't like to be doing this after 6 months or less

Is the roof optimum for solar panel installation. Facing true South and a large flat uninterrupted roof is best, with limited shading from adjacent trees

Ensure you contact your insurance company as some are definitely anti Solar Panels due to concerns from some Fire Departments especially volunteer groups that are apprehensive about accumulated electrical charges especially if the panels are charging a battery pack system
All fasteners should be stainless steel and wiring copper not aluminum, both to limit corrosion and the associated issues

Note there have been some reports of health issues when people are sensitive to Electromagnetic Fields also. 

Some lending companies are uneducated in this process so your lender, or the new home owners lender may have a hard time evaluating the risk/ reward relationship. Ensure that transfer can be carried out seamlessly as usual periods of 20 years lease are common