Cornerstone Testing Solutions

What They Do

MoldMold TestingAsbestosLead Paint

• Environmental due diligence
• Water quality monitoring
• HPD Lead Violation Clearance
• XRF Lead Paint Testing
• Local Law 31 Compliance Testing
• Post-Abatement Lead Dust Sampling
• Lead Dust Wipe Clearance Testing
• EPA RRP Lead Inspections
• Mold Assessment & Moisture Mapping
• Indoor Air Quality Testing
• Asbestos Screening & Inspections
• Toxic Mold Sampling
• Hazardous Materials Inspection
• Special Inspections Agency Testing
• Pre-Renovation Environmental Screening
• Property Management Compliance Audits
• XRF Lead Testing
• XRF Analysis
• Lead Dust Wipe Clearance
• Local Law 31 Inspection
• Local Law 55 Compliance Testing
• HPD Violation Removal
• Mold Assessment
• Mold Testing
• Asbestos Inspection
• Environmental Inspection
• Environmental Site Assessment

In Their Own Words

Cornerstone Testing Solutions LLC is NYC’s premier independent environmental inspection firm specializing in building compliance, violation removal, and hazard testing. We provide fast-track lead paint inspections using advanced XRF analysis, post-abatement lead dust wipe clearance sampling, and certified water testing services. Serving property managers, general contractors, and residential owners across all five boroughs, our licensed team delivers accurate reporting and expert consulting services to resolve HPD and municipal violations quickly. We also provide certified mold assessments, indoor air quality testing, and hazard screening to keep your properties fully aligned with the latest city regulations.

Written by the business on its public profile. We have not verified these claims.

Before You Call Cornerstone Testing Solutions

1. Where do you think the moisture is coming from, and who fixes it?
2. Will you set up containment and negative air, and how will you protect the rest of the home?
3. Do you also do remediation? If so, who checks your work?
4. How many air samples will you take, and will you take an outdoor control sample?
5. Is your company licensed for asbestos abatement here?

For mold jobs over 10 square feet, New York State requires a licensed mold assessor and a separate licensed remediation contractor. Ask for both license numbers.

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Read This While You Wait

• DIY with careSafe DIY Mold Cleanup for Areas Under 10 Square FeetA step by step method to clean up mold under 10 square feet safely, with the gear to buy, what to throw away, why bleach is not the default, and when to stop.
• Call a proMold Testing, When It Is Worth It and How to Read a Lab ReportWhen a mold test is worth paying for, which kind to ask for, why store kits mislead, and how to read spore counts, outdoor controls and a lab report yourself.
• Call a proAsbestos in Older Homes, Where It Hides and What Not to TouchWhere asbestos hides in older homes, why intact material is often safest left alone, how lab testing works, and what never to sand, scrape, drill or break.
• DIY with careLead Paint in Homes Built Before 1978What lead paint means in a home built before 1978. Who is most at risk, how to test, what the EPA RRP rule requires, and which practices are banned.