This is where utilizing Google Street View may be very beneficial. How so? That is an excellent question.

First,  you can usually see what the street was like and if parking was available. This allows for proper planing to assure an on time arrival which is a great way to start off the relationship with the potential client. Second, it often allows visibility into the type of property where the estimate is going to be made. This also allows for some strategic planning prior to arrival on scene. Third, if you are in the roofing industry this technology often allows you to see exactly which type of roof is present on the property as well as other important roofing variables needed to make a sound estimate. This information can allow you to be prepared to offer a customized estimate to the potential client without having to take unnecessary time to do so due to already having knowledge of the roof type. Fourth,  you can often determine obvious structural defects from the photos available. Again, this type of due diligence saves you time on site but also helps you to project a very professional image. Fifth, using this technology allows you to be completely prepared in terms of what equipment you will need to make the best estimate possible. For example, Google Street View may allow you to determine what size ladder(s) may be needed to make an inspection/estmate. Finally, this technology allows you to capture an image of the property for any client files you may be keeping for the estimate and any subsequent work.

I suggest you give this technology a look to see if you can implement it to make a very positive impression on your prospective clients.