Mold testing or inspection in Maryland

Westminster, MD / 4.9 rating from 997 reviews / Water damage restoration service

Best for: Westminster and central Maryland homeowners dealing with water damage or mold who want a woman-owned IICRC firm with 24/7 response and insurance documentation handled for them.

Service area: Clean Sweep is headquartered in Westminster, Maryland (Carroll County). They serve Carroll, Frederick, Baltimore, Harford, Howard, Anne Arundel, and Montgomery counties in Maryland, plus Adams and York counties in Pennsylvania. That is a large footprint for an independent company, covering roughly a 60-mile radius.

Review snapshot: Rob Doyle draws consistent praise across dozens of reviews for clear communication and fast water damage work, but 4 of the 5 recent one-star reviews describe surprise out-of-pocket bills after being told insurance would cover everything.

Germantown, MD / 4.9 rating from 112 reviews / Water damage restoration service

Best for: Germantown homeowners who want mold inspection, testing, and remediation from a long-running local carpet cleaning operation with published pricing and 7-day-a-week availability.

Service area: Based in Germantown, MD 20874, dispatching from Wisteria Dr. The website focuses on Germantown and surrounding areas but does not name specific neighboring cities or counties. The domain name and all page content are Germantown-specific.

Review snapshot: Walfred draws repeated praise for punctuality and care across dozens of reviews, with Ofir and Curtis also named for strong carpet work. But zero negative reviews in the past 18 months means no complaint pattern to report (0 of 112 reviews at 4.9★).

Frederick, MD / 5 rating from 97 reviews / Water damage restoration service

Best for: Frederick homeowners dealing with water damage or mold who want a single company to handle cleanup through restoration, backed by 34 years in the area and a 12-person crew.

Service area: Headquartered at 5702 Industry Ln B-21 in Frederick, MD 21704. They serve Frederick and the surrounding area, though specific coverage boundaries are not listed on their website. Chamber memberships in the Greater Brunswick Area and Greater Mt. Airy chambers suggest they serve those communities as well.

Review snapshot: Josh, John, and Daniel draw repeated praise for fast, friendly carpet and restoration work across 97 reviews at 5.0 stars. But zero negative reviews in the last 18 months means there is limited complaint data to assess.

Timonium, MD / 4.8 rating from 97 reviews / Water damage restoration service

Best for: Baltimore-area homeowners dealing with basement flooding or mold who want a family-run restoration company that handles insurance claims and offers Wisetack financing.

Service area: EcoClean Restoration is headquartered in Timonium, Maryland. They list service area pages for Baltimore, Owings Mills, Perry Hall, Pikesville, Ellicott City, Randallstown, Reisterstown, Cockeysville, Hunt Valley, Woodlawn, Westminster, Columbia, and Timonium. This covers Baltimore County, parts of Howard County, and Carroll County.

Review snapshot: Shiv draws repeated praise for fast response times and honest assessments, with Willy and Alex frequently named for cleanup work. But the company left 4 recent 1-star reviews unanswered out of 97 total at 4.8 stars, and one reviewer reported property damage during carpet removal.

Lusby, MD / 4.8 rating from 93 reviews / Water damage restoration service

Best for: Southern Maryland homeowners in Calvert, Charles, or St. Mary's Counties dealing with water damage that has led to mold, where insurance claim navigation and 24/7 owner-level response matter.

Service area: Raines Restoration is based in Lusby, Maryland, in Calvert County. They serve Charles County, St. Mary's County, and Calvert County. Their website says "and beyond" but does not name specific areas outside these three counties.

Review snapshot: Trey and Stephanie draw consistent praise for fast response and hands-on communication across 93 reviews. But one recent reviewer reported Trey visited once and never followed up with a quote (1 one-star review out of 93).

Glen Burnie, MD / 4.9 rating from 80 reviews / Water damage restoration service

Best for: Central Maryland homeowners dealing with water damage or basement flooding who want a locally owned restoration company in Glen Burnie that answers calls 24/7 and dispatches crews within an hour.

Service area: Headquartered in Glen Burnie, Maryland. Serves Anne Arundel County, Baltimore County, Baltimore City, Howard County, and Prince George's County. Specific cities include Annapolis, Arnold, Bowie, Catonsville, Columbia, Crofton, Dundalk, Edgewater, Elkridge, Ellicott City, Greenbelt, Laurel, Linthicum, Middle River, Odenton, Pasadena, Pikesville, Rosedale, Severn, Severna Park, and Towson. The list covers over 40 communities across Central Maryland, which is a wide footprint for a locally owned company.

Review snapshot: Thomas draws consistent praise for honest assessments and detailed quotes, with Lenny and Lou also named for responsive field work. But 3 of 80 reviews are 1-star, including one reviewer who never received a follow-up after an initial visit.

Baltimore, MD / 5 rating from 71 reviews / Water damage restoration service

Best for: Baltimore and Annapolis homeowners who want a plant-based, low-demolition mold treatment from an owner-operated franchise with a 5.0-star Google rating across 71 reviews.

Service area: Headquartered in Baltimore, MD (21207). Serves the Baltimore metro and Annapolis areas including Lutherville-Timonium, Towson, Parkville, Reisterstown, Owings Mills, Pikesville, White Marsh, Catonsville, Glen Burnie, Severna Park, Annapolis, Bel Air, Forest Hill, Monkton, and surrounding communities in Baltimore, Anne Arundel, and Harford counties.

Review snapshot: Jason and Jay draw consistent praise across 71 reviews for honest assessments, same-day availability, and not upselling, with zero 1-star reviews on record.

Columbia, MD / 5 rating from 56 reviews / Water damage restoration service

Best for: Columbia-area homeowners and DC metro home buyers who want a family-run mold company known for telling customers when they don't need remediation.

Service area: MoldGone is headquartered in Columbia, Maryland. They serve the DC metropolitan area including Montgomery, Howard, Baltimore, Anne Arundel, and Prince George's Counties in Maryland, Washington DC, and Northern Virginia including Arlington, Alexandria, Fairfax, Falls Church, Herndon, Reston, Springfield, Tysons Corner, Vienna, McLean, and Great Falls. That's a wide footprint from a single office in Columbia.

Review snapshot: Jon, Mike, Kevin, and Jay draw consistent praise for honesty and willingness to turn away unnecessary work, with zero 1-star reviews across 56 total at 5.0 stars.

Mount Airy, MD / 4.9 rating from 54 reviews / Water damage restoration service

Best for: Central Maryland homeowners from Frederick to Bethesda looking for a veteran-owned franchise that uses plant-based enzyme treatments instead of harsh chemical demolition for mold remediation.

Service area: Based in Mount Airy, MD 21771. Serves central Maryland including Frederick, Columbia, Ellicott City, Gaithersburg, Germantown, Rockville, Bethesda, Potomac, Westminster, Bowie, Crofton, Silver Spring, Olney, Clarksburg, Clarksville, and surrounding communities. This is a large coverage area spanning multiple counties.

Review snapshot: Brian and Brandon draw repeated praise for patient explanations and non-pushy consultations across 54 reviews. But 1 reviewer at 1 star described a dispute over inspection fees and methods used during an assessment.

Silver Spring, MD / 5 rating from 48 reviews / Water damage restoration service

Best for: Silver Spring homeowners and landlords dealing with mold after water damage who want a national chain with IICRC-trained technicians and same-day or next-day scheduling.

Service area: FDP Mold Remediation of Silver Spring dispatches from Georgia Ave in Silver Spring, MD. They list coverage for Takoma Park, Adelphi, Colesville, Fairland, Kemp Mill, Wheaton-Glenmont, White Oak, Beltsville, Chillum, Greenbelt, Hyattsville, and Langley Park. Reviews also mention Bethesda jobs. The parent company operates locations across the DC metro, Baltimore, Northern Virginia, New Jersey, New York, Florida, and Texas, so jobs at the edge of this location's area may be routed elsewhere.

Review snapshot: Alex Cruz and Abraham draw consistent praise for clear explanations and fast turnaround across dozens of reviews. But with zero negative reviews among 48 total at 5.0 stars, there is no complaint pattern to report.

Bel Air, MD / 5 rating from 39 reviews / Water damage restoration service

Best for: Northeast Maryland homeowners dealing with water damage or basement mold who want a family-owned outfit with 24/7 emergency response and competitive pricing.

Service area: Headquartered in Bel Air, Maryland (215 Red Pump Rd). Serves Northeast MD including Aberdeen, Havre de Grace, Edgewood, Fallston, Perry Hall, Joppatowne, Middle River, Elkton, Perryville, Rising Sun, Charlestown, Chesapeake City, North East, and Port Deposit. The claimed area spans most of Harford and Cecil counties plus parts of Baltimore County.

Review snapshot: Austin draws consistent praise across 39 reviews for fast response, clear communication, and fair pricing. But with zero negative reviews on record, there is no complaint data to evaluate.

Gaithersburg, MD / 4.9 rating from 28 reviews / Water damage restoration service

Best for: Gaithersburg-area homeowners who want a single company to handle mold testing, remediation, and water damage under one roof, with three offices spanning Frederick to Lanham.

Service area: Headquartered in Gaithersburg, MD with additional offices in Frederick and Lanham. The company lists Frederick, Hagerstown, Urbana, Damascus, Gaithersburg, Germantown, Bethesda, Rockville, Potomac, Chevy Chase, Olney, Columbia, Annapolis, and Silver Spring as service areas. They also claim to serve Washington DC, Virginia, and Pennsylvania, though the extent of that coverage is unclear.

Review snapshot: Tommy and Jesus draw consistent praise across 28 reviews for fast response times and honest pricing, but with zero negative reviews to weigh, the 4.9-star rating is untested by public criticism.

Rockville, MD / 4.7 rating from 27 reviews / Water damage restoration service

Best for: Rockville-area homeowners dealing with water damage that led to mold, since Superior handles both the water extraction and mold work under one contract with $199 air quality testing.

Service area: Superior operates from Rockville, Maryland (15733 Crabbs Branch Way). The website claims coverage across Washington DC, Baltimore, Virginia, and Fairfax VA. That is a service radius of 40-60 miles in multiple directions, so confirm availability and response time for your specific location.

Review snapshot: Shawn and Luis draw praise for basement mold and water leak fixes, with reviewers noting on-time arrivals and clean work areas. But 1 of 27 reviewers reports mold returning months later with no callback.

Stevensville, MD / 4.7 rating from 24 reviews / Water damage restoration service

Best for: Maryland Eastern Shore and Annapolis-area homeowners needing water damage dried and mold addressed by a single PuroClean franchise with 24/7 response from the Stevensville base.

Service area: Based in Stevensville, Maryland (Queen Anne's County, Eastern Shore). Lists service coverage for Annapolis, Baltimore, Hyattsville, Laurel, Bowie, and surrounding areas. The office sits on the eastern side of the Chesapeake Bay Bridge, which means Annapolis and points west require a bridge crossing. The claimed coverage area spans over 60 miles from the Stevensville base.

Review snapshot: Benny draws repeat praise for communication and thoroughness on water mitigation jobs, and Orlando gets called out for being informative and punctual. But with only 24 total reviews, the sample is small for a franchise that has operated since at least 2015.

Baltimore, MD / 4.8 rating from 22 reviews / Water damage restoration service

Best for: Baltimore and Annapolis homeowners who want a plant-based mold treatment that avoids demolition, run by franchise operator Jason Toliver.

Service area: Based in Baltimore, MD 21207, serving the Baltimore and Annapolis metro areas. The website lists coverage across multiple counties including Lutherville-Timonium, Towson, Owings Mills, Ellicott City, Columbia, Severna Park, Glen Burnie, Annapolis, Bel Air, and many other communities. That is a wide footprint for what appears to be a small operation — confirm availability and scheduling for your specific location.

Review snapshot: Jay Toliver draws consistent praise for communication and knowledge from reviewers like Ian Chaput and Carrie Tollett, but 22 total reviews is thin for a company covering this wide a territory.

Waldorf, MD / 4.8 rating from 21 reviews / Water damage restoration service

Best for: Southern Maryland homeowners in Charles County dealing with mold after water damage who want an ACAC-credentialed owner personally running the job.

Service area: Headquartered in Waldorf, MD. Serves Charles County, St. Mary's County, Calvert County, Prince George's County, and Washington DC. The company also holds a Virginia mold inspector credential, though the primary service area is Southern Maryland.

Review snapshot: John Paul draws consistent praise across 21 reviews at 4.8 stars for hands-on involvement and fast response times, with zero complaints in the last 18 months.

Gaithersburg, MD / 5 rating from 16 reviews / Water damage restoration service

Best for: Gaithersburg-area homeowners dealing with water damage that led to mold, who want one company to handle extraction, remediation, and rebuild under a single insurance claim.

Service area: Headquartered in Gaithersburg, Maryland. Serves Montgomery County and Frederick County as primary areas, with dedicated service pages for Carroll County and Washington County. The mold remediation FAQ also names Silver Spring, Bethesda, Rockville, and Frederick as specific cities served.

Review snapshot: Olga draws repeat praise for fast on-site response, and Miguel and Dan get called out for quality finish work. But with only 16 reviews since 2016, the sample is thin — 0 of 16 are negative at 5.0★.