Ocean County has the newest housing of the 14 counties we cover. The median house dates to 1982, eleven years after the state median, and a quarter of all homes went up in 2000 or later. In Barnegat the median is 1998 and nearly half the homes are that new. Lakewood's median is 1994 and Jackson's 1989.
A house built in the late 1980s or 1990s may still be on its first roof, and shingles that age are often near the end of their life. A first roof usually comes off as a single layer, so the tear off is simpler. The deck is the open question, since nobody has looked at it since the day it was covered.
Near the water there is more to it. The State Climatologist describes the shore as a zone where land and ocean weather fight it out day to day, with nor'easters most often between October and April. On a shore house that means rain blown in under the shingle edges, tabs lifted at the eaves and the ridge, and salt air on the flashing and the nails.
So an Ocean County roof gets priced from on top of it. We go up when it is safe to, look in the attic, and check the edges and the ridge before anything else.