The thing about greenhouses is that they don't do well anywhere that the "wind can come sweeping down the plains."
If you Look closely, you will notice that many people do very well with a greenhouse in their back yard and a 6 ft fence around the back yard protecting it.
If you look at Eliot Coleman's Greenhouses, they are all on the east side of a forest which protects them from the west wind. In fact he cleared forest to create a ground for agriculture.
I Know that the NE recently had a bad drought, but we in the Midwest and you in the East DON'T KNOW what a drought is like out west.

You have nice soil and usually plenty of rain.
IF you didn't hear already California wasn't even in a problem drought.
The large California population needs a great deal of water and their government spent all of the money that the voters had allocated to build new water resources. The Pacific Palisades reservoir was bone dry before the fire.
THIS was a man made disaster, not an act of God.
Pretty bone headed to not take care of the people's needs, but I wouldn't worry too much about a fire taking your greenhouse out in Massachusetts.