National Property Inspections

What They Do

Mold Testing

• 11th month warranty inspections
• Annual maintenance checkup
• Manufactured home inspections
• Mold sampling
• Multi-unit inspections
• New construction inspections
• Pre-listing inspections
• Rental property inspections
• Sewer line scope
• Sprinkler system inspection
• Air Conditioning
• Commercial Building Inspections
• Home Seller's Inspection
• Inspection Process
• Inspection Reports
• Parking Lots
• Residential Services

Compare Them With Others in Kennewick

• All 9 mold inspection and testing companies in Kennewick

In Their Own Words

National Property Inspections Tri-Cities is Washington's premier name in home and commercial property inspections. Our professionally trained inspectors have years of experience identifying the condition of hundreds of your homes most vital systems. With fast turnaround, comprehensive, easy-to-understand reports and friendly service, our team is here to answer all of your questions any time in the inspection process. Our goal is simple to give you the information you need when you need it, so you can make the right decision with your investment. Whether you're buying your family's new home or renting a commercial building for your growing business, NPI Tri-Cities gives you peace of mind.

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

Before You Call National Property Inspections

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?

Ask for the company’s contractor registration number and look it up with the Washington State Department of Labor and Industries. 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.
• 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.