Harper Inspect

What They Do

Mold TestingAsbestosLead Paint

• Asbestos sampling
• Lead-based paint testing
• Manufactured home inspections
• Mold sampling
• Multi-unit inspections
• New construction inspections
• Pre-listing inspections
• Rental property inspections
• Bacterial clearance testing
• Bed Bug Test
• Bed bug inspections
• Drywall Inspection
• Home Inspection
• Hydraulic Load Test
• Infrared Inspection
• Lead Test
• Mold Inspection
• Mold Testing
• Pipe Inspection
• Radon Test
• Radon testing
• Roof Inspection
• Septic Inspection
• Sewer Pipe Inspection
• Termite Inspection
• Water Test
• Water quality testing

Compare Them With Others in King of Prussia

• All 8 mold inspection and testing companies in King of Prussia

In Their Own Words

Our thorough inspections will provide you peace-of-mind for your home purchase.

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

Before You Call Harper Inspect

1. Do you also do remediation? If so, who checks your work?
2. How many air samples will you take, and will you take an outdoor control sample?
3. Is your company licensed for asbestos abatement here?
4. Who takes the samples, and which lab tests them?
5. Is your firm certified under the federal lead renovation rule?

In Pennsylvania ask for the contractor’s state home improvement registration number, and in Philadelphia also ask for the city contractor license. Also ask for proof of insurance and industry certification for the technicians.

They list no storefront. Ask where the business is based and whether the crew is their own.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• 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.
• DIY with careAttic Mold on Roof Sheathing, Causes and FixesWhy mold grows on attic roof sheathing, how to find the cause, the fixes that stop it for good, and how to tell a cosmetic stain from a roof that needs work.