Permit
A permit from Hanover
Massachusetts exempts sheds, fences and finish work from permits (R105.2), not roofing. Hanover’s building department issues it, and the application carries the contractor’s HIC registration number.
Roof Replacement in Hanover, MA
Half of the 5,131 homes in Hanover were built before 1978. Below: what the code asks of a replacement here, the permit, and the town’s own records.
New Roofing Costs connects homeowners with independent local roofing contractors. We do not perform roofing work.
Call (833) 781-1806 Replacement and new roofs only · homeowners
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.
The rules for a reroof in Hanover
Layers
One old layer can stay; two cannot
A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). 52% of Hanover’s homes were built before 1980; many have been reroofed before.
Source: IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes); 780 CMR 51.00, Chapter 9 amendments
Ice barrier
Required statewide
Massachusetts answers “yes” to the ice barrier for every town. That is a self-adhering membrane, or two cemented layers of underlayment, from the eave to at least 24 inches inside the wall line (IRC R905.1.2).
Source: 780 CMR 51.00, Chapter 3 amendments (Tables R301.2(1) and R301.2(2)); IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes)
Wind and snow
124 mph design wind, 35 psf ground snow
Hanover’s code design values are a 124 mph ultimate design wind speed and a 35 psf ground snow load (30 psf minimum flat-roof snow load). At that wind speed the code calls for asphalt shingles labeled ASTM D7158 Class G or H (Table R905.2.4.1).
Source: 780 CMR 51.00, Chapter 3 amendments (Tables R301.2(1) and R301.2(2)); IRC 2021, Chapter 9 (Pennsylvania edition, UpCodes) (780 CMR 51.00, Table R301.2(2))
Checked against the code text on October 24, 2026. Code edition, permit and contract rules for the whole state: roof replacement in Massachusetts.
Homes and roofs in Hanover
Of 5,015 occupied homes in Hanover, 4,236 (85%) are owner-occupied. Counting by decade, 9% before 1940, 19% before 1960, 52% before 1980 of the housing was in place, and 21% dates from 2000 on. (ACS 2020–2024.)
The housing is 80% detached houses, 5% attached single-family houses (rowhouses, twins and townhouses).
Of the 27 Plymouth County municipalities on this site, Hanover has the 19th largest share of homes built before 1980: 52%, against a county range of 42% to 81%.
ZIP codes: 02339
Hanover and the towns around it
| Place | Median built | Before 1980 | Owners | Row, twin | Hail days |
|---|---|---|---|---|---|
| Hanover | 1978 | 52% | 85% | 5% | 10 |
| Rockland | 1962 | 68% | 77% | 11% | 9 |
| Norwell | 1968 | 68% | 92% | 3% | 6 |
| Pembroke | 1974 | 59% | 90% | 6% | 8 |
| Hanson | 1972 | 61% | 89% | 7% | 8 |
| Abington | 1970 | 63% | 73% | 8% | 9 |
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.
Hail and storms near Hanover
NOAA’s storm reports show 10 days since 2006 with hail of at least 1 inch inside a 10-mile circle around Hanover, topping out at 1.75 in on July 24, 2012. The most recent was August 14, 2025.
Plymouth County has had 8 federal major-disaster declarations for storms since 2006; the latest was DR-4651, Severe Winter Storm and Snowstorm (April 2022). (OpenFEMA.)
Storm reports are what observers logged, not a measure of damage to any roof. When wind or hail damage means a new roof.
What goes on the roof next
Lifespans come from HUD’s capital-needs table, not from a brochure. 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; 80% of homes here are detached | Class G or H at 124 mph design wind (IRC Table R905.2.4.1) |
| Metal (standing seam, panels) | 50 years | Simple roofs with long, unbroken slopes | A complete standing-seam system may go over the old roof (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 | Additions and porch roofs | Coating is not a replacement |
Checking a contractor in Massachusetts
Two numbers to ask for in Hanover: the HIC registration (M.G.L. c. 142A, for owner-occupied homes of one to four units) and the construction supervisor license (CSL) with the roof covering specialty.
Contracts, deposits and the right to cancel: checking a roofing contractor. What moves the price: new roof cost in Massachusetts.
Questions about a new roof in Hanover
Do I need a permit to replace a roof in Hanover?
A permit from Hanover. Massachusetts exempts sheds, fences and finish work from permits (R105.2), not roofing. Hanover’s building department issues it, and the application carries the contractor’s HIC registration number.
Is a roof-over allowed in Hanover, or is it a tear-off?
A new roof may go over one existing layer; with two or more, or over slate, clay or cement tile, everything comes off to the deck (IRC R908.3.1.1). 52% of Hanover’s homes were built before 1980; many have been reroofed before.
When were most homes in Hanover built?
By the Census Bureau’s American Community Survey (2020–2024), the median home in Hanover was built in 1978, 52% of homes were built before 1980, 85% are owner-occupied.
How many hail days has Hanover had?
Hail of 1 inch or larger was reported on 10 days within 10 miles of Hanover from 2006 through 2025 (NOAA Storm Prediction Center). A report means hail fell nearby, not that a roof was damaged.
What license or registration should a roofer in Hanover have?
Two numbers to ask for in Hanover: the HIC registration (M.G.L. c. 142A, for owner-occupied homes of one to four units) and the construction supervisor license (CSL) with the roof covering specialty.
What they will ask on the phone
- Your address or ZIP code in Hanover
- One story or two (or more), detached or attached
- The roof you have today, shingle, metal, slate, tile or flat, and its rough age
- How many layers are on it, if you know
- Your timing for a complete replacement
- Whether the house is in a historic district or an HOA
- That you own the home and decide on the roof
The full list: before you call.