Half of the 493 homes in Shrewsbury Township were built before 1957. The rules below decide how much of the old roof has to come off and what goes under the new one.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
This number connects homeowners who are planning a new roof or a full roof replacement with independent local roofing contractors. It is not for leak repairs or patch jobs. The call must come from the homeowner who decides on the roof. Calls may be recorded.
Permit
New Jersey treats a new covering on a detached one- or two-family house as ordinary maintenance: no permit, no notice (N.J.A.C. 5:23-2.7). In Shrewsbury Township, 4% of homes are detached. An attached house, or work on rafters and beams, is not covered.
Source: N.J.A.C. 5:23-2.7
Layers
New Jersey deletes the IRC’s reroofing definitions (N.J.A.C. 5:23-3.21(c)2.xxii); its layer rule for existing houses is in the Rehabilitation Subcode, which this site has not read yet. 84% of Shrewsbury Township’s homes were built before 1980: ask how many layers yours has and whether the price is for a tear-off to the deck.
Source: N.J.A.C. 5:23-3.21
Ice barrier
New Jersey requires the eave membrane only where January averages 25 °F or colder, which the state says is Sussex County (DCA Bulletin 07-3). In Shrewsbury Township it is the installer’s and the manufacturer’s call; ask whether the quote includes it.
Source: N.J.A.C. 5:23-3.21; NJ DCA Bulletin 07-3
Rules as read on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in New Jersey.
Of 456 occupied homes in Shrewsbury Township, 315 (69%) are owner-occupied. By year built, 9% before 1940, 53% before 1960, 84% before 1980; 3% went up in 2000 or later. (ACS 2020–2024.)
By building type: 4% detached houses, 63% attached single-family houses (rowhouses, twins and townhouses), 14% buildings of two to four units.
With 63% of homes attached, many roofs here meet a neighbor’s roof at a party wall. Say so on the call, and ask the contractor how the new roof will be tied in where it meets the house next door. New Jersey’s no-permit rule for reroofing covers detached houses only, so an attached house is outside it.
Of the 48 Monmouth County municipalities on this site, Shrewsbury Township has the 2nd largest share of homes built before 1980: 84%, against a county range of 22% to 87%.
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Shrewsbury Township | 1957 | 84% | 69% | 63% | 10 |
| Shrewsbury Borough | 1969 | 54% | 86% | 6% | 10 |
| Eatontown | 1971 | 65% | 58% | 15% | 11 |
| Red Bank | 1958 | 80% | 50% | 9% | 10 |
| Little Silver | 1958 | 80% | 96% | 9% | 10 |
| Oceanport | 1971 | 60% | 83% | 12% | 10 |
Median built: median year the homes were built. Before 1980: share of homes built then. Owners: share of homes that are owner-occupied. Row, twin: share of homes that are rowhouses, twins or townhouses. Census ACS 2020–2024. Hail days: days with hail of 1 inch or larger within 10 miles, 2006–2025, NOAA Storm Prediction Center.
Within 10 miles of Shrewsbury Township, hail of an inch or more was reported on 10 days between 2006 and 2025, the biggest stones 1.75 in on June 29, 2019. The most recent was April 1, 2023.
Remnants of Hurricane Ida (DR-4614, September 2021) is the latest of 7 federal storm declarations covering Monmouth County since 2006. (OpenFEMA.)
A report says hail fell near Shrewsbury Township, not that it damaged a roof. When wind or hail damage means a new roof.
Useful life is HUD’s planning figure, not a warranty. More in the guides to shingles, metal, slate and flat roofs.
| Material | HUD useful life | Fits a house like | Watch for |
|---|---|---|---|
| Asphalt shingles | 20 years | Most pitched roofs; 4% of homes here are detached | Wind class set by the design wind speed (IRC Table R905.2.4.1) |
| Metal (standing seam, panels) | 50 years | Roofs that will carry solar later | Standing seam that carries its own loads can skip the tear-off (R908.3.1) |
| Slate | 75 years | Older houses; 9% here predate 1940 | Never a base for a new layer (R908.3.1.1); heavy |
| Flat roof: EPDM or TPO | 15 years | Low-slope roofs and rear sections (63% of homes here are attached) | Seams at walls and drainage |
Any business offering home improvements in Shrewsbury Township must be registered with the New Jersey Division of Consumer Affairs, with the number on its contracts and ads (N.J.S.A. 56:8-138, 56:8-144); 47,473 registrations were active in October 2026.
The price side is in what a new roof costs in New Jersey; the paperwork side in checking a roofing contractor.
No permit for a detached house. New Jersey treats a new covering on a detached one- or two-family house as ordinary maintenance: no permit, no notice (N.J.A.C. 5:23-2.7). In Shrewsbury Township, 4% of homes are detached. An attached house, or work on rafters and beams, is not covered.
By the Census Bureau’s American Community Survey (2020–2024), the median home in Shrewsbury Township was built in 1957, 84% of homes were built before 1980, 69% are owner-occupied.
Hail of 1 inch or larger was reported on 10 days within 10 miles of Shrewsbury Township from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
Any business offering home improvements in Shrewsbury Township must be registered with the New Jersey Division of Consumer Affairs, with the number on its contracts and ads (N.J.S.A. 56:8-138, 56:8-144); 47,473 registrations were active in October 2026.
The full list: before you call.
Checked October 24, 2026. Laws and code editions change; the date says when these were last read at the source.