Mariner's Harbor-Arlington-Graniteville, Staten Island

The median recorded building in Mariner's Harbor-Arlington-Graniteville dates to 1975, the exact year that marks the end of the postwar boom window used across this file — meaning at least half of its recorded stock was built at or after that cutoff. The three broad era shares split more evenly here than in most of the neighborhoods in this set: 26% of buildings predate 1940, 24% fall inside the 1945-to-1975 boom itself, and 20% have been recorded since 2000, leaving a substantial middle stretch of construction between the boom and the present that the three headline shares don't fully capture. That evenly split timeline is one of the more unusual construction profiles in this file, where most neighborhoods cluster heavily around one era instead. Few other neighborhood files in this set land their median construction year exactly on that boundary.

The file counts 16,153 residential units across roughly 6,400 tax lots, one of the higher unit totals recorded in this group relative to its lot count. Residential use covers 88% of lots, and building classes lead with 57% one-family and 28% two-family, with a small vacant-land share of 5% rounding out the top three. Land use mirrors that pattern: 85% one- and two-family residential, 5% vacant, and 2% multi-family walk-up.

Development headroom covers 71% of lots, with a median residual FAR gap of just 0.2 — one of the tightest margins recorded in this set, suggesting less unused floor-area capacity per lot than in some of the more land-banked neighborhoods nearby. Flood exposure is minor, with just 1% of lots sitting inside a mapped special flood hazard area on the federal map. Together, the tight residual margin and modest flood share describe a neighborhood that has already used up more of its allowed floor area than most of its neighbors, without much exposure to the flood boundary running through parts of the borough's North Shore. Lot sizes run a median of 3,067 square feet, with the larger recorded lots reaching 7,281 square feet.

No lots here carry a historic-district designation on record. Mariner's Harbor-Arlington-Graniteville borders New Springville-Willowbrook-Bulls Head-Travis, Port Richmond, and Westerleigh-Castleton Corners, three neighborhoods in this same file, some of which cluster more tightly around a single construction era than the split recorded here. That variation is worth noting for anyone comparing construction timelines across the borough's western North Shore. Reading those three files together shows how sharply construction timing can vary even among adjoining North Shore neighborhoods.