When Meg Grady ’s clients saw solar panels on the roof of a four-bed, three-bath seaside Colonial in Winthrop, the prospective buyers were less than enthused.

“It was not the most positive reaction,” said Grady, an agent with Lantern Residential/Eastielove, who explained that the home had not been owner-occupied, making it difficult to know what upkeep was required for the panels.

There was also the question of the contractual details between the owner and the solar panel company. The home’s location near the beach added additional complexity, since the roof already needed to withstand the natural elements, in addition to the weight of the panels.

In neighborhoods across America, salespeople walking door-to-door selling solar panels are almost a dime a dozen. For some Massachusetts ho

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