Provider profile
Maryland Mold and Waterproofing
Provider snapshot
What this listing says
Central Maryland homeowners dealing with basement mold, water intrusion, or crawl space problems who want a family-owned company that also handles foundation repair and waterproofing under one roof.
Best for
- Homeowners in Anne Arundel, Howard, Baltimore, Prince George's, or Montgomery counties who need mold remediation combined with the waterproofing or foundation work that caused it.
- Real estate agents and buyers under contract who need fast mold clearance before closing -- several realtors in the reviews describe repeat use for exactly this scenario.
- Anyone with a wet crawl space who wants encapsulation, drainage, and dehumidification handled by the same crew rather than coordinating multiple contractors.
- Homeowners who want an honest initial assessment -- reviewers repeatedly note that Nick and John told them they did not have a mold problem when they expected one, saving them money.
- Emergency water damage situations where you need same-day extraction and follow-up mold prevention.
About this company
Maryland Mold and Waterproofing is a family-owned company based in Odenton, MD, founded by Kristi and John Rivers after their own experience with water damage. They serve the Annapolis, Baltimore, and broader central Maryland market. Their core work splits between mold remediation, basement waterproofing, crawl space encapsulation, and foundation repair -- making them one of the few companies in the area that handles all four under one roof.
They hold ACAC certifications (CMR/CMI) for mold work and are an Authorized Grate Products Preferred Contractor, which gives them access to patented interior drainage systems with flushable drains. Their mold remediation process includes HEPA-filtered negative air pressure, controlled demolition, antimicrobial application on a case-by-case basis, and post-remediation testing. They also run a 24/7 water damage restoration service with IICRC-trained technicians and work with insurance companies, including public adjuster partners. They offer free visual mold inspections and financing with 12 months of no payments and no interest.
John Rivers stays directly involved in jobs -- multiple reviewers describe him personally conducting inspections, providing estimates, and overseeing remediation. The company also offers annual maintenance packages for waterproofing systems, which is less common among mold-focused firms.
4.9 stars across 251 Google reviews is unusually strong. Only one review at three stars or below has appeared in the last 18 months. Multiple real estate agents in the review pool use them repeatedly for transaction-related mold clearances, which suggests consistent turnaround times on deadline-sensitive work.
Services
Service area
Based in Odenton, MD (Anne Arundel County). They list service coverage across Anne Arundel, Howard, Baltimore, Prince George's, Montgomery, Harford, Carroll, Frederick, Queen Anne's, Kent, and Talbot counties -- with specific city pages for over 100 locations. Core coverage centers on the Annapolis-Baltimore-Columbia corridor, with outer reach extending to Frederick, the Eastern Shore, and southern Prince George's County.
Review consensus
Nick draws the most individual mentions across reviews -- homeowners and realtors both describe him as honest, knowledgeable, and willing to tell people they don't have a mold problem rather than upselling. John Rivers shows up personally on inspections and complex jobs, and multiple reviewers credit him with saving them money by diagnosing smaller problems than they expected. On the crew side, Emilio handles waterproofing and remediation jobs and gets praised for keeping customers informed throughout the process. Maurice receives consistent praise for being helpful and detail-oriented on remediation work. Corbin is noted for detailed and responsive crawl space estimates. Sarah in the office is described as responsive and organized. Several real estate agents describe using the company repeatedly for transaction-related work, pointing to reliable turnaround on tight deadlines.
1 found across 251 total reviews at 4.9★. The single recent complaint describes a frustrating scheduling and communication failure: a one-week wait for an initial appointment, followed by alarming claims about mold that turned out not to exist, a promised quote that never arrived, and a voicemail that went unreturned. The reviewer ultimately hired a competitor who resolved the issue quickly. John Rivers responded personally, apologized, and acknowledged the company fell short, but did not dispute any of the specific claims.
The most striking pattern is how often reviewers describe being told they did not have a problem. Nick and John both appear in multiple reviews where the outcome was 'no mold found' or 'smaller issue than expected,' with the company declining to sell unnecessary work. This runs counter to the typical incentive structure for companies that do both testing and remediation. John Rivers responds to the one negative review with a personalized apology rather than a template, which tracks with the owner-involved culture visible across the positive reviews.
Nick (consultant/estimator -- consistently praised for honesty, knowledge, and not upselling), John Rivers (owner -- praised for personal involvement, honest assessments, and saving customers money), Emilio (crew lead -- praised for on-time work and keeping customers informed), Maurice (remediation crew -- praised for thoroughness and friendliness), Corbin (estimator -- praised for detailed crawl space estimates), Dylan (crew -- praised for timely work), Hugo (crew -- praised for timely work), Jordy (crew -- praised for professionalism and clean work), Peter (crew -- praised for friendliness), Sarah (office staff -- praised for responsiveness)
With 251 reviews at 4.9 stars and only one negative in the last 18 months, this is one of the strongest review profiles you will find for a mold company in central Maryland. The pattern of honest assessments -- multiple reviewers describe being told they don't need work -- is a strong trust signal, especially given the testing-and-remediation conflict of interest. Ask for Nick or John on your initial inspection, confirm scheduling commitments in writing, and get an independent test if the remediation scope is large.
Keep in mind
- They do both mold testing and mold remediation. This creates a financial incentive to find problems. Consider getting an independent mold test if their inspection identifies a large remediation scope.
- Their one recent negative review describes a week-long wait for an initial appointment followed by unreturned calls and a quote that never arrived. John Rivers responded with a personal apology but did not dispute the timeline. If you're on a deadline, confirm turnaround commitments in writing.
- They claim service coverage across 10+ Maryland counties, from Frederick to Kent County on the Eastern Shore. Jobs at the outer edges of that range may face longer scheduling windows than those near their Odenton base.
- Free mold inspections are visual only. Lab-based air or surface testing for mold is a separate service. Ask upfront what is included before assuming testing is part of the inspection.
- Financing terms advertise 12 months with no payments and no interest, but interest starts on day 366. Read the agreement carefully if you plan to pay over time.