Seabrook has a broader mix of property ages than its neighbour, and what goes wrong depends very much on which era your home belongs to.
The original villas
Villas from the seventies and eighties are now at the age where original fittings are giving out together — shut-off valves seized, supply lines never changed, shower cartridges untouched since the building went up. In a shared building those are worth replacing before they fail rather than after.
Homes from the polybutylene era
If yours has grey pipe, we will be straight with you: repairing one failed fitting is fine as an immediate measure, but it does not make the rest of the pipe any younger.
Newer construction
Modern pipe, where what fails is the equipment attached to it — recirculation pumps, filtration, irrigation controllers and outdoor kitchens.
Intermittent use is hard on fittings
Valves and cartridges that sit unused for months seize more readily than those in daily service. A check before a season of use is worth more here than a routine annual visit would be elsewhere.