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Water Damage, Mold and Restoration Companies in Portsmouth, New Hampshire

Portsmouth and the Seacoast has 13 restoration and remediation companies in our listings across 5 cities, with 549 public reviews between them.

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What Makes Portsmouth, New Hampshire Different

Portsmouth is one of the oldest cities in the country, and many homes on the Seacoast are well over a century old. Granite and brick foundations seep in wet seasons, old roofs leak around chimneys, and lead paint is common in homes built before 1978. Old plaster, pipe wrap and floor tile may contain asbestos, so test before you tear anything out.

Winters bring nor’easters, heavy wet snow and many freeze and thaw cycles. Ice dams form along the eaves of older homes with little attic insulation, and meltwater backs up under the shingles into ceilings and walls. Pipes in exterior walls and unheated spaces freeze and split, and the leak usually shows up when things warm up.

Coastal storms push high tides into low streets along the harbor, the Piscataqua and the beaches. Floodwater from outside is contaminated, and a standard homeowners policy does not cover it. Salt water corrodes wiring fast, so have an electrician check anything that was under water before the power goes back on.

Most Reviewed in Portsmouth and the Seacoast

  1. 1

    Paul Davis Restoration of Southern New Hampshire, Maine & Boston North (Essex County)24/7

    3560 Lafayette Rd Ste C · Portsmouth, NH

    4.4 from 126 public reviews

    Water DamageMoldMold TestingFire and SmokeStorm

  2. 2

    Elite Restoration Inc24/7

    12 Elm Rd · North Hampton, NH

    5.0 from 118 public reviews

    Water DamageMoldFire and SmokeSewageBiohazard

  3. 3

    Insurcomm Restoration24/7

    290 Heritage Ave #1 · Portsmouth, NH

    4.5 from 76 public reviews

    Water DamageMoldMold TestingFire and SmokeSewage

  4. 4

    E-Z Clean Carpet & Upholstery LLC

    45 Lafayette Rd #155 · North Hampton, NH

    4.8 from 72 public reviews

    Water DamageMoldOdor

  5. 5

    All Dry Services of Southern Maine24/7

    647 US-1 Unit 14 · York, NH

    5.0 from 63 public reviews

    Water DamageMoldMold TestingFire and SmokeSewage

  6. 6

    Groundworks

    Service area business · Portsmouth, NH

    4.9 from 49 public reviews

    Water DamageMoldMold Testing

  7. 7

    MB2 Restore LLC24/7

    933 Islington St · Portsmouth, NH

    5.0 from 30 public reviews

    Water DamageMoldMold TestingFire and SmokeStorm

  8. 8

    Garvey Construction llc

    20 Remicks Ln · Kittery, NH

    5.0 from 9 public reviews

    Water DamageFire and SmokeStorm

  9. 9

    XDD Environmental

    22 Marin Way #3 · Stratham, NH

    4.0 from 3 public reviews

    Water Damage

  10. 10

    Apple Painting and Restoration, LLC

    52 Taft Rd · Portsmouth, NH

    5.0 from 2 public reviews

    Water Damage

  11. 11

    1-800-BoardUp of The Seacoast24/7

    290 Heritage Ave · Portsmouth, NH

    2.0 from 1 public review

    Water DamageMoldMold TestingFire and SmokeSewage

  12. 12

    Puro Clean

    Service area business · Portsmouth, NH

    No public reviews yet

    Fire and Smoke

Checking a License in Portsmouth and the Seacoast

New Hampshire does not license general contractors at the state level, though plumbers and electricians need state licenses. Maine is the same, with no statewide general contractor license but state licenses for plumbers and electricians. On either side of the river, check with your city or town building department about permits before rebuild work starts. Neither state has a separate mold license, so ask whether the technicians hold industry certification in water damage and mold remediation, and ask for proof of liability and workers compensation insurance. If the home was built before 1978, ask whether the crew is certified for lead safe renovation.