Water damage repair and restoration in Portsmouth, NH
Water damage in Portsmouth, NH usually starts in one of a few places: a failed supply line or water heater, a roof or window leak, or water that gets into a basement or crawl space. 52% of Portsmouth's 11,094 homes were built before 1960, and 34% before 1940, so galvanized pipe, cast-iron drains, plaster walls and older foundations are common. Restoration companies in our network serve 4 Portsmouth ZIP codes in Rockingham County.
Quick answer
For water, fire or smoke damage in Portsmouth, NH, shut off the water or power if it's safe, then call (833) 462-1975. We connect you with an independent restoration company that serves your ZIP; 4 Portsmouth ZIP codes are covered. With many older homes here, hidden pipe and drain leaks are common, so ask for a moisture check behind walls.
Census data
Portsmouth homes by the numbers
- Homes
- 11,094
- Median year built
- 1958
- Built before 1960
- 52%
- Owner-occupied
- 52%
Among the 9 New Hampshire cities with pages on this site, Portsmouth ranks #6 by number of homes and has older housing than 100% of them (median build year 1958). Its share of pre-1960 homes (52%) is well above the 37% average for those cities, which points to more pipe, drain and foundation leaks.
Source: U.S. Census Bureau, American Community Survey 2019–2023 5-year estimates (tables B25034, B25035, B25003); 22,938 residents per the 2024 population estimate.
Local risks
What causes water damage in Portsmouth
Older foundations and pipes
In a city where 52% of homes were built before 1960, the usual suspects are corroded supply lines, cracked cast-iron drains and foundations that let water in after heavy rain.
Burst pipes in cold snaps
Pipes in exterior walls, over garages and in crawl spaces are most at risk during multi-day subzero stretches.
Ice dams
Older capes and colonials with little attic insulation are prone to ice dams that push water into top-floor ceilings.
Seasonal risks, licensing and FEMA history across the state are on the New Hampshire page.
Common calls
Most requested in Portsmouth
FAQ
Portsmouth water damage questions
Who do I call for water damage in Portsmouth?
For water, fire or smoke damage in Portsmouth, NH, shut off the water or power if it's safe, then call (833) 462-1975. We connect you with an independent restoration company that serves your ZIP; 4 Portsmouth ZIP codes are covered. With many older homes here, hidden pipe and drain leaks are common, so ask for a moisture check behind walls.
How old are homes in Portsmouth?
The median home in Portsmouth was built in 1958. About 52% of its 11,094 homes were built before 1960 and 13% in 2000 or later, according to the Census Bureau's American Community Survey. Older homes are more likely to have corroded pipes and drains; newer homes see more appliance and supply-line leaks.
Do you cover all of Portsmouth?
Restoration companies in our network cover 4 Portsmouth ZIP codes. Coverage is set ZIP by ZIP, so enter yours in the ZIP checker or call to confirm a company serves your address.
ZIP codes covered in Portsmouth
03801, 03802, 03803, 03804
Water damage help near Portsmouth
- Water damage restoration in Hampton, NH8 mi
- Water damage restoration in Dover, NH10 mi
- Water damage restoration in Somersworth, NH14 mi
- Water damage restoration in Rochester, NH19 mi
- Water damage restoration in Haverhill, MA25 mi
- Water damage restoration in Derry, NH28 mi
- Water damage restoration in Gloucester, MA30 mi
- Water damage restoration in Lawrence, MA31 mi
Also covered in Rockingham County: Hampton · Seabrook
Guides for Portsmouth homeowners
Water damage in Portsmouth?
Stop the source if you can, then call. We'll connect you with a local restoration company that serves your ZIP.
Fast callback on emergency requests