NESC, (National Electrical Safety Code) in a nut shell they are going around and correcting the code from the past. What is happening is people are putting in swimming pools, and large decks underneath these power lines. The code in the past I believe read 8′ or 10′ from ground or deck to power line. The new code is 12’6″ above the ground or deck. These have been slowly been taken care of over the past few years. Only lately have the letters started going out. The power company will reconnect and disconnect your power at the pole. It is your responsibility for the wire and the connection to the house. Depending on how high you have to raise the mast at the house this could cost anywhere from $400.00 to $750.00. Hope this helps.
Sincerely, Andy Love