Mold Remediation in New Hampshire
281 zip codes with active providers out of 238 total (118.1% coverage). Ranked #28 of 45 states by avg bid.
State Avg
$126
National Avg
$143.28
Coverage
118.1%
vs National
-12.1%
State vs National Average
Dashed line = National Avg ($143)
Mold Remediation Specialist Costs in New Hampshire
Typical cost range: $1,500–$9,000 depending on affected area
When to Hire a Mold Remediation Specialist
Emergency service available in most areas
What to Look For
Common Mold Remediation Specialist Problems in New Hampshire
Attic mold from inadequate roof ventilation or bathroom exhaust fans venting into the attic instead of outside
Basement and crawl space mold from poor drainage, foundation cracks, or lack of vapor barriers
Bathroom mold behind tile and around tub/shower enclosures where grout has failed and moisture penetrates the wall
Mold inside HVAC ducts that spreads spores throughout the entire house every time the system runs
Hidden mold behind wallpaper, under carpet padding, or inside wall cavities after a slow plumbing leak
Mold in rental properties that landlords have painted over instead of properly remediating
Questions to Ask Before Hiring a Mold Remediation Specialist in New Hampshire
“Will you identify and address the moisture source, or just remove the visible mold?”
Mold is a symptom of a water problem. If the source isn't fixed, the mold will return — sometimes within weeks. A professional should diagnose the cause before quoting removal.
“Do you perform post-remediation verification testing, and who does it?”
A third-party post-remediation test proves the air quality is back to normal. Some companies skip this step. Ideally, the testing company is independent from the remediation company.
“What containment methods will you use during the work?”
Professional remediation requires negative air pressure, HEPA air scrubbers, and physical barriers to prevent cross-contamination. If they don't mention containment, they're not following protocol.
Red Flags When Hiring a Mold Remediation Specialist
- ✖Claims they can test for mold AND do the remediation — this is a conflict of interest. Testing should be independent
- ✖Recommends 'mold-killing' paint, encapsulant, or ozone treatments as a standalone solution without removing contaminated materials
- ✖Uses bleach as their primary treatment method — bleach is ineffective on porous materials where mold roots grow
- ✖Cannot explain their containment procedures or doesn't use HEPA air scrubbers during removal
- ✖Quotes a fixed price without inspecting the full extent of the mold growth or testing to identify the species
DIY vs Hiring a Professional Mold Remediation Specialist
You can clean mold from non-porous surfaces (tile, glass, metal) smaller than 10 square feet with soap and water or a borax solution. Never use bleach on porous materials — it kills surface mold but the roots survive. Any mold on drywall, wood framing, insulation, carpet, or in HVAC systems requires professional remediation. Black mold (Stachybotrys) should always be handled by certified professionals due to serious health risks including respiratory damage and neurological symptoms.
Mold Remediation Specialist Safety Tips
- Never disturb large areas of mold without proper containment — you can release millions of spores into your home's air and make the problem dramatically worse
- Stachybotrys (toxic black mold) exposure can cause serious respiratory damage, neurological symptoms, and immune suppression — always get professional testing if you suspect it
- Immunocompromised individuals, children, and elderly people should not be in the home during active mold remediation
Best Time to Hire a Mold Remediation Specialist in New Hampshire
Mold thrives in warm, humid conditions — spring and summer are peak seasons, especially in southeastern and coastal states. Indoor humidity above 60% creates ideal mold conditions. Run dehumidifiers in basements and crawl spaces year-round. After any storm or flooding event, dry affected areas within 24–48 hours to prevent mold growth. Winter brings its own risks: condensation on cold windows and walls, and ice dam moisture penetrating attics.
Mold Remediation Specialist Licensing in New Hampshire
Mold remediation licensing varies widely by state. Some states (TX, FL, LA, MD, VA) require specific mold remediation licenses. Others have no licensing requirements at all. Regardless of state law, always hire companies with IICRC S520 or ACAC certification. Ask for proof of liability insurance with a minimum $1M policy and workers' compensation coverage.
City-by-City Costs (253 cities)
| City | Avg Bid | Max Bid | Min Bid | Zip Codes |
|---|---|---|---|---|
| Acworth | $126.00 | $126.00 | $126.00 | 1 |
| Alstead | $126.00 | $126.00 | $126.00 | 1 |
| Alton | $126.00 | $126.00 | $126.00 | 1 |
| Alton Bay | $126.00 | $126.00 | $126.00 | 1 |
| Amherst | $126.00 | $126.00 | $126.00 | 1 |
| Andover | $126.00 | $126.00 | $126.00 | 1 |
| Antrim | $126.00 | $126.00 | $126.00 | 1 |
| Ashland | $126.00 | $126.00 | $126.00 | 1 |
| Ashuelot | $126.00 | $126.00 | $126.00 | 1 |
| Atkinson | $126.00 | $126.00 | $126.00 | 1 |
| Auburn | $126.00 | $126.00 | $126.00 | 1 |
| Barnstead | $126.00 | $126.00 | $126.00 | 1 |
| Barrington | $126.00 | $126.00 | $126.00 | 1 |
| Bartlett | $126.00 | $126.00 | $126.00 | 1 |
| Bath | $126.00 | $126.00 | $126.00 | 1 |
| Bedford | $126.00 | $126.00 | $126.00 | 1 |
| Belmont | $126.00 | $126.00 | $126.00 | 1 |
| Bennington | $126.00 | $126.00 | $126.00 | 1 |
| Berlin | $126.00 | $126.00 | $126.00 | 1 |
| Bethlehem | $126.00 | $126.00 | $126.00 | 1 |
| Bow | $126.00 | $126.00 | $126.00 | 1 |
| Bradford | $126.00 | $126.00 | $126.00 | 1 |
| Bretton Woods | $126.00 | $126.00 | $126.00 | 1 |
| Bristol | $126.00 | $126.00 | $126.00 | 1 |
| Brookline | $126.00 | $126.00 | $126.00 | 1 |
| Campton | $126.00 | $126.00 | $126.00 | 1 |
| Canaan | $126.00 | $126.00 | $126.00 | 1 |
| Candia | $126.00 | $126.00 | $126.00 | 1 |
| Canterbury | $126.00 | $126.00 | $126.00 | 1 |
| Center Barnstead | $126.00 | $126.00 | $126.00 | 1 |
| Center Conway | $126.00 | $126.00 | $126.00 | 1 |
| Center Harbor | $126.00 | $126.00 | $126.00 | 1 |
| Center Ossipee | $126.00 | $126.00 | $126.00 | 1 |
| Center Sandwich | $126.00 | $126.00 | $126.00 | 1 |
| Center Strafford | $126.00 | $126.00 | $126.00 | 1 |
| Center Tuftonboro | $126.00 | $126.00 | $126.00 | 1 |
| Charlestown | $126.00 | $126.00 | $126.00 | 1 |
| Chester | $126.00 | $126.00 | $126.00 | 1 |
| Chesterfield | $126.00 | $126.00 | $126.00 | 1 |
| Chichester | $126.00 | $126.00 | $126.00 | 1 |
| Chocorua | $126.00 | $126.00 | $126.00 | 1 |
| Claremont | $126.00 | $126.00 | $126.00 | 1 |
| Colebrook | $126.00 | $126.00 | $126.00 | 1 |
| Concord | $126.00 | $126.00 | $126.00 | 4 |
| Contoocook | $126.00 | $126.00 | $126.00 | 1 |
| Conway | $126.00 | $126.00 | $126.00 | 1 |
| Cornish | $126.00 | $126.00 | $126.00 | 1 |
| Cornish Flat | $126.00 | $126.00 | $126.00 | 1 |
| Danbury | $126.00 | $126.00 | $126.00 | 1 |
| Danville | $126.00 | $126.00 | $126.00 | 1 |
| Deerfield | $126.00 | $126.00 | $126.00 | 1 |
| Derry | $126.00 | $126.00 | $126.00 | 1 |
| Dover | $126.00 | $126.00 | $126.00 | 3 |
| Drewsville | $126.00 | $126.00 | $126.00 | 1 |
| Dublin | $126.00 | $126.00 | $126.00 | 1 |
| Dunbarton | $126.00 | $126.00 | $126.00 | 1 |
| Durham | $126.00 | $126.00 | $126.00 | 1 |
| East Andover | $126.00 | $126.00 | $126.00 | 1 |
| East Candia | $126.00 | $126.00 | $126.00 | 1 |
| East Derry | $126.00 | $126.00 | $126.00 | 1 |
| East Hampstead | $126.00 | $126.00 | $126.00 | 1 |
| East Kingston | $126.00 | $126.00 | $126.00 | 1 |
| East Wakefield | $126.00 | $126.00 | $126.00 | 1 |
| Eaton Center | $126.00 | $126.00 | $126.00 | 1 |
| Effingham | $126.00 | $126.00 | $126.00 | 1 |
| Elkins | $126.00 | $126.00 | $126.00 | 1 |
| Enfield | $126.00 | $126.00 | $126.00 | 1 |
| Enfield Center | $126.00 | $126.00 | $126.00 | 1 |
| Epping | $126.00 | $126.00 | $126.00 | 1 |
| Epsom | $126.00 | $126.00 | $126.00 | 1 |
| Errol | $126.00 | $126.00 | $126.00 | 1 |
| Etna | $126.00 | $126.00 | $126.00 | 1 |
| Exeter | $126.00 | $126.00 | $126.00 | 1 |
| Farmington | $126.00 | $126.00 | $126.00 | 1 |
| Fitzwilliam | $126.00 | $126.00 | $126.00 | 1 |
| Francestown | $126.00 | $126.00 | $126.00 | 1 |
| Franconia | $126.00 | $126.00 | $126.00 | 1 |
| Franklin | $126.00 | $126.00 | $126.00 | 1 |
| Freedom | $126.00 | $126.00 | $126.00 | 1 |
| Fremont | $126.00 | $126.00 | $126.00 | 1 |
| Georges Mills | $126.00 | $126.00 | $126.00 | 1 |
| Gilford | $126.00 | $126.00 | $126.00 | 1 |
| Gilmanton | $126.00 | $126.00 | $126.00 | 1 |
| Gilmanton Iron Works | $126.00 | $126.00 | $126.00 | 1 |
| Gilsum | $126.00 | $126.00 | $126.00 | 1 |
| Glen | $126.00 | $126.00 | $126.00 | 1 |
| Glencliff | $126.00 | $126.00 | $126.00 | 1 |
| Goffstown | $126.00 | $126.00 | $126.00 | 1 |
| Gorham | $126.00 | $126.00 | $126.00 | 1 |
| Goshen | $126.00 | $126.00 | $126.00 | 1 |
| Grafton | $126.00 | $126.00 | $126.00 | 1 |
| Grantham | $126.00 | $126.00 | $126.00 | 1 |
| Greenfield | $126.00 | $126.00 | $126.00 | 1 |
| Greenland | $126.00 | $126.00 | $126.00 | 1 |
| Greenville | $126.00 | $126.00 | $126.00 | 1 |
| Groveton | $126.00 | $126.00 | $126.00 | 1 |
| Guild | $126.00 | $126.00 | $126.00 | 1 |
| Hampstead | $126.00 | $126.00 | $126.00 | 1 |
| Hampton | $126.00 | $126.00 | $126.00 | 2 |
| Hampton Falls | $126.00 | $126.00 | $126.00 | 1 |
| Hancock | $126.00 | $126.00 | $126.00 | 1 |
| Hanover | $126.00 | $126.00 | $126.00 | 1 |
| Harrisville | $126.00 | $126.00 | $126.00 | 1 |
| Haverhill | $126.00 | $126.00 | $126.00 | 1 |
| Hebron | $126.00 | $126.00 | $126.00 | 1 |
| Henniker | $126.00 | $126.00 | $126.00 | 1 |
| Hill | $126.00 | $126.00 | $126.00 | 1 |
| Hillsborough | $126.00 | $126.00 | $126.00 | 1 |
| Hinsdale | $126.00 | $126.00 | $126.00 | 1 |
| Holderness | $126.00 | $126.00 | $126.00 | 1 |
| Hollis | $126.00 | $126.00 | $126.00 | 1 |
| Hooksett | $126.00 | $126.00 | $126.00 | 1 |
| Hudson | $126.00 | $126.00 | $126.00 | 1 |
| Intervale | $126.00 | $126.00 | $126.00 | 1 |
| Jackson | $126.00 | $126.00 | $126.00 | 1 |
| Jaffrey | $126.00 | $126.00 | $126.00 | 1 |
| Jefferson | $126.00 | $126.00 | $126.00 | 1 |
| Kearsarge | $126.00 | $126.00 | $126.00 | 1 |
| Keene | $126.00 | $126.00 | $126.00 | 2 |
| Kingston | $126.00 | $126.00 | $126.00 | 1 |
| Laconia | $126.00 | $126.00 | $126.00 | 2 |
| Lancaster | $126.00 | $126.00 | $126.00 | 1 |
| Lebanon | $126.00 | $126.00 | $126.00 | 2 |
| Lee | $126.00 | $126.00 | $126.00 | 1 |
| Lempster | $126.00 | $126.00 | $126.00 | 1 |
| Lincoln | $126.00 | $126.00 | $126.00 | 1 |
| Lisbon | $126.00 | $126.00 | $126.00 | 1 |
| Litchfield | $126.00 | $126.00 | $126.00 | 1 |
| Littleton | $126.00 | $126.00 | $126.00 | 1 |
| Lochmere | $126.00 | $126.00 | $126.00 | 1 |
| Londonderry | $126.00 | $126.00 | $126.00 | 1 |
| Loudon | $126.00 | $126.00 | $126.00 | 1 |
| Lyme | $126.00 | $126.00 | $126.00 | 1 |
| Lyme Center | $126.00 | $126.00 | $126.00 | 1 |
| Lyndeborough | $126.00 | $126.00 | $126.00 | 1 |
| Madbury | $126.00 | $126.00 | $126.00 | 1 |
| Madison | $126.00 | $126.00 | $126.00 | 1 |
| Manchester | $126.00 | $126.00 | $126.00 | 8 |
| Marlborough | $126.00 | $126.00 | $126.00 | 1 |
| Marlow | $126.00 | $126.00 | $126.00 | 1 |
| Melvin Village | $126.00 | $126.00 | $126.00 | 1 |
| Meredith | $126.00 | $126.00 | $126.00 | 1 |
| Meriden | $126.00 | $126.00 | $126.00 | 1 |
| Merrimack | $126.00 | $126.00 | $126.00 | 1 |
| Milan | $126.00 | $126.00 | $126.00 | 1 |
| Milford | $126.00 | $126.00 | $126.00 | 1 |
| Milton | $126.00 | $126.00 | $126.00 | 1 |
| Milton Mills | $126.00 | $126.00 | $126.00 | 1 |
| Mirror Lake | $126.00 | $126.00 | $126.00 | 1 |
| Monroe | $126.00 | $126.00 | $126.00 | 1 |
| Mont Vernon | $126.00 | $126.00 | $126.00 | 1 |
| Moultonborough | $126.00 | $126.00 | $126.00 | 1 |
| Mount Washington | $126.00 | $126.00 | $126.00 | 1 |
| Nashua | $126.00 | $126.00 | $126.00 | 5 |
| Nelson | $126.00 | $126.00 | $126.00 | 1 |
| New Boston | $126.00 | $126.00 | $126.00 | 1 |
| New Castle | $126.00 | $126.00 | $126.00 | 1 |
| New Durham | $126.00 | $126.00 | $126.00 | 1 |
| New Hampton | $126.00 | $126.00 | $126.00 | 1 |
| New Ipswich | $126.00 | $126.00 | $126.00 | 1 |
| New London | $126.00 | $126.00 | $126.00 | 1 |
| Newbury | $126.00 | $126.00 | $126.00 | 1 |
| Newfields | $126.00 | $126.00 | $126.00 | 1 |
| Newmarket | $126.00 | $126.00 | $126.00 | 1 |
| Newport | $126.00 | $126.00 | $126.00 | 1 |
| Newton | $126.00 | $126.00 | $126.00 | 1 |
| Newton Junction | $126.00 | $126.00 | $126.00 | 1 |
| North Conway | $126.00 | $126.00 | $126.00 | 1 |
| North Hampton | $126.00 | $126.00 | $126.00 | 1 |
| North Haverhill | $126.00 | $126.00 | $126.00 | 1 |
| North Salem | $126.00 | $126.00 | $126.00 | 1 |
| North Sandwich | $126.00 | $126.00 | $126.00 | 1 |
| North Stratford | $126.00 | $126.00 | $126.00 | 1 |
| North Sutton | $126.00 | $126.00 | $126.00 | 1 |
| North Walpole | $126.00 | $126.00 | $126.00 | 1 |
| North Woodstock | $126.00 | $126.00 | $126.00 | 1 |
| Northwood | $126.00 | $126.00 | $126.00 | 1 |
| Nottingham | $126.00 | $126.00 | $126.00 | 1 |
| Orford | $126.00 | $126.00 | $126.00 | 1 |
| Ossipee | $126.00 | $126.00 | $126.00 | 1 |
| Pelham | $126.00 | $126.00 | $126.00 | 1 |
| Peterborough | $126.00 | $126.00 | $126.00 | 1 |
| Piermont | $126.00 | $126.00 | $126.00 | 1 |
| Pike | $126.00 | $126.00 | $126.00 | 1 |
| Pittsburg | $126.00 | $126.00 | $126.00 | 1 |
| Pittsfield | $126.00 | $126.00 | $126.00 | 1 |
| Plainfield | $126.00 | $126.00 | $126.00 | 1 |
| Plaistow | $126.00 | $126.00 | $126.00 | 1 |
| Plymouth | $126.00 | $126.00 | $126.00 | 1 |
| Portsmouth | $126.00 | $126.00 | $126.00 | 4 |
| Randolph | $126.00 | $126.00 | $126.00 | 1 |
| Raymond | $126.00 | $126.00 | $126.00 | 1 |
| Rindge | $126.00 | $126.00 | $126.00 | 1 |
| Rochester | $126.00 | $126.00 | $126.00 | 4 |
| Rollinsford | $126.00 | $126.00 | $126.00 | 1 |
| Rumney | $126.00 | $126.00 | $126.00 | 1 |
| Rye | $126.00 | $126.00 | $126.00 | 1 |
| Rye Beach | $126.00 | $126.00 | $126.00 | 1 |
| Salem | $126.00 | $126.00 | $126.00 | 1 |
| Salisbury | $126.00 | $126.00 | $126.00 | 1 |
| Sanbornton | $126.00 | $126.00 | $126.00 | 1 |
| Sanbornville | $126.00 | $126.00 | $126.00 | 1 |
| Sandown | $126.00 | $126.00 | $126.00 | 1 |
| Seabrook | $126.00 | $126.00 | $126.00 | 1 |
| Silver Lake | $126.00 | $126.00 | $126.00 | 1 |
| Somersworth | $126.00 | $126.00 | $126.00 | 1 |
| South Acworth | $126.00 | $126.00 | $126.00 | 1 |
| South Newbury | $126.00 | $126.00 | $126.00 | 1 |
| South Sutton | $126.00 | $126.00 | $126.00 | 1 |
| South Tamworth | $126.00 | $126.00 | $126.00 | 1 |
| Spofford | $126.00 | $126.00 | $126.00 | 1 |
| Springfield | $126.00 | $126.00 | $126.00 | 1 |
| Stoddard | $126.00 | $126.00 | $126.00 | 1 |
| Strafford | $126.00 | $126.00 | $126.00 | 1 |
| Stratham | $126.00 | $126.00 | $126.00 | 1 |
| Sugar Hill | $126.00 | $126.00 | $126.00 | 1 |
| Sullivan | $126.00 | $126.00 | $126.00 | 1 |
| Sunapee | $126.00 | $126.00 | $126.00 | 1 |
| Suncook | $126.00 | $126.00 | $126.00 | 1 |
| Swanzey | $126.00 | $126.00 | $126.00 | 1 |
| Tamworth | $126.00 | $126.00 | $126.00 | 1 |
| Temple | $126.00 | $126.00 | $126.00 | 1 |
| Thornton | $126.00 | $126.00 | $126.00 | 1 |
| Tilton | $126.00 | $126.00 | $126.00 | 3 |
| Troy | $126.00 | $126.00 | $126.00 | 1 |
| Twin Mountain | $126.00 | $126.00 | $126.00 | 1 |
| Union | $126.00 | $126.00 | $126.00 | 1 |
| Walpole | $126.00 | $126.00 | $126.00 | 1 |
| Warner | $126.00 | $126.00 | $126.00 | 1 |
| Warren | $126.00 | $126.00 | $126.00 | 1 |
| Washington | $126.00 | $126.00 | $126.00 | 1 |
| Waterville Valley | $126.00 | $126.00 | $126.00 | 1 |
| Weare | $126.00 | $126.00 | $126.00 | 1 |
| Wentworth | $126.00 | $126.00 | $126.00 | 1 |
| West Chesterfield | $126.00 | $126.00 | $126.00 | 1 |
| West Lebanon | $126.00 | $126.00 | $126.00 | 1 |
| West Nottingham | $126.00 | $126.00 | $126.00 | 1 |
| West Ossipee | $126.00 | $126.00 | $126.00 | 1 |
| West Peterborough | $126.00 | $126.00 | $126.00 | 1 |
| West Stewartstown | $126.00 | $126.00 | $126.00 | 1 |
| West Swanzey | $126.00 | $126.00 | $126.00 | 1 |
| Westmoreland | $126.00 | $126.00 | $126.00 | 1 |
| Whitefield | $126.00 | $126.00 | $126.00 | 1 |
| Wilmot | $126.00 | $126.00 | $126.00 | 1 |
| Wilton | $126.00 | $126.00 | $126.00 | 1 |
| Winchester | $126.00 | $126.00 | $126.00 | 1 |
| Windham | $126.00 | $126.00 | $126.00 | 1 |
| Winnisquam | $126.00 | $126.00 | $126.00 | 1 |
| Wolfeboro | $126.00 | $126.00 | $126.00 | 1 |
| Wolfeboro Falls | $126.00 | $126.00 | $126.00 | 1 |
| Wonalancet | $126.00 | $126.00 | $126.00 | 1 |
| Woodstock | $126.00 | $126.00 | $126.00 | 1 |
| Woodsville | $126.00 | $126.00 | $126.00 | 1 |
Showing 253 of 253 rows
Coverage Gaps
11 zip codes without coverage
These areas in New Hampshire have no active mold remediation providers.
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Frequently Asked Questions
How much does mold remediation cost in New Hampshire?
The average bid for mold remediation in New Hampshire is $126, compared to the national average of $143.28. Prices range from $126 to $126 depending on location. Typical cost range: $1,500–$9,000 depending on affected area.
What cities in New Hampshire have mold remediation coverage?
New Hampshire has mold remediation providers in 253 cities across 281 zip codes, representing 118.1% coverage of the state. Top cities include Acworth, Alstead, Alton, Alton Bay, Amherst.
How does New Hampshire compare to the national average for mold remediation?
New Hampshire is 12.1% below the national average for mold remediation. It ranks #28 out of 45 states by average bid.
Are there areas in New Hampshire without mold remediation providers?
Yes, 11 zip codes in New Hampshire currently have no active mold remediation providers. Underserved cities include Zcta 030hh, Zcta 031hh, Zcta 032hh, Zcta 032xx, Zcta 033hh.
When should I hire a mold remediation specialist in New Hampshire?
You see visible mold growth larger than 10 square feet or it's spreading behind walls, in the attic, or in HVAC ducts Emergency service is available in most New Hampshire areas. Mold thrives in warm, humid conditions — spring and summer are peak seasons, especially in southeastern and coastal states.
What should I look for in a mold remediation specialist in New Hampshire?
IICRC (Institute of Inspection Cleaning and Restoration Certification) or ACAC certification — the industry gold standard. A company that performs pre- and post-remediation air quality testing to verify mold levels return to normal. Mold remediation licensing varies widely by state.
Can I do mold remediation work myself instead of hiring a pro?
You can clean mold from non-porous surfaces (tile, glass, metal) smaller than 10 square feet with soap and water or a borax solution. Never use bleach on porous materials — it kills surface mold but the roots survive. Any mold on drywall, wood framing, insulation, carpet, or in HVAC systems requires professional remediation.
What warranty should I expect from a mold remediation specialist in New Hampshire?
Expect a warranty of at least 1 year on remediation work, contingent on the moisture source being resolved. The warranty should cover re-treatment if mold returns in the same area.