Full Roof Replacement in Southampton, NY

In 2026, a full tear-off and replacement on Long Island runs about $530–795 per square (100 sq ft) for architectural asphalt, $900–1,620 for cedar, $1,050–1,785 for standing seam metal and $1,155–1,890 for synthetic slate; natural slate is $2,000–3,500 per square nationally. A typical 2,500–4,000 sq ft East Hampton roof is 25–40 squares, so asphalt lands around $13,250–31,800 and cedar or metal well above that. East Hampton jobs tend to sit at the top of the ranges because of access, roof complexity and material grade.

The work itself is quick: asphalt 1–3 days (one day for a simple roof, two or three for a complex one), cedar 3–6 days, slate 6–10 days, plus weather. The calendar is dominated by what comes before: a permit (2–4 weeks in the Village of East Hampton; a reported 16–20 week backlog in the Town of East Hampton; the Town of Southampton is generally faster), design review in the villages' historic districts, and material lead time, which is longest for cedar, slate and copper. Book a spring roof in winter.

Usually yes for a tear-off. Across Suffolk County the pattern is that a replacement that goes down to the sheathing needs a building permit, while a shingle-over-shingle recover often does not. In the Village of East Hampton permits typically take 2–4 weeks when the application is complete; the Town of East Hampton (Springs, Wainscott, Amagansett, Montauk, Northwest) has reported a backlog of 16–20 weeks against a statutory 15-day clock. In the village's four historic districts, a visible change of roof material also needs a Certificate of Appropriateness; a new wood-shingle roof is exempt. Confirm with the building department before ordering material.

By age and evidence together. Architectural asphalt is usually done at 20–30 years, cedar at 20–40, EPDM or TPO at 20–30, standing seam at 40–70+, slate rarely (hard slate 75–200 years; restore it instead). Replace sooner if you see widespread curling or cupping, granules or shakes in the gutters, daylight in the attic, repeated leaks at different spots, or a second layer already on the roof. Insurers also start asking questions at 15–20 years, and some will not renew without an inspection or replacement.