Western States Inspection Authority

Trust Your Home Inspection To The Experts

We provide detailed inspection reports and industry knowledge to support home buyers and sellers, realtors, mortgage professionals, fix-and-flippers, and anyone else needing a home inspection.

We Are The Industry Leader In Home Inspection.

WSI Authority is a leader in property condition inspections providing physical verification of the safety and condition of residential property prior to purchase. At Western States Inspection Authority the safety and health of your home is our top priority. We know you’re ready to buy a new home. Which is why we inspect over 4,000 homes every month to make sure your purchase meets all relevant building codes and includes no hidden surprises.

Complete Home Inspection

We are committed to exceeding your expectations of a home inspection by using the latest technologies and procedures to make your purchase as smooth as possible.

Commercial Building Inspection

We are experts at capturing the current conditions of a commercial property so you have accurate, reliable information for purchasing, financing, leasing, and operating properties.

Environmental Inspection

Families and businesses have a right to know if they are living in a healthy environment. WSI Authority provides mold and radon assessment services to verify your home or business is safe.


Get an Inspection Quote.

Is your property worth what you think? Lets start with a free quote.


About Us

In the world of business one needs to always focus on what is important. For us, what is important is our clients and their satisfaction. We owe our clients the continued success of our business and it is for them that we make sure to never waver in our commitment to excellence. Before we perform any job or service for our clientele we map out a detailed plan to ensure that the work is done efficiently and with the expertise the people of have come to expect from Western States Inspection Authority.

Our Mission.

We are changing the way people buy homes by helping buyers make a more informed purchasing decision, while providing home sellers with peace of mind that their home is thoroughly inspected.

Fast Response

24 Hour Turn Around Time

Detailed & Accurate Reporting


Who Will Benefit From Inspections?

Inspections will provide you with a breakdown of where the problems are in your house or building.


Frequently Asked Questions.

Do I Have To Be There?

While it’s not required that you be present for the inspection, it is highly recommended. You will be able to observe the inspector and ask questions as you learn about the condition of the home and how to maintain it.

Why Do I Need A Home Inspection?

Buying a home could be the largest single investment you will ever make. To minimize unpleasant surprises and unexpected difficulties, you’ll want to learn as much as you can about the newly constructed or existing house before you buy it. A home inspection may identify the need for major repairs or builder oversights, as well as the need for maintenance to keep it in good shape. After the inspection, you will know more about the house, which will allow you to make decisions with confidence.

Can A House Fail A Home Inspection?

No. A professional home inspection is an examination of the current condition of a house. It is not an appraisal, which determines market value. It is not a municipal inspection, which verifies local code compliance. A home inspector, therefore, will not pass or fail a house, but rather describe its physical condition and indicate what components and systems may need major repair or replacement.

When Do I Call A Home Inspector?

Typically, a home inspector is contacted immediately after the contract or purchase agreement has been signed. Before you sign, be sure there is an inspection clause in the sales contract, making your final purchase obligation contingent on the findings of a professional home inspection. This clause should specify the terms and conditions to which both the buyer and seller are obligated.

Our Service Areas

Alameda County, Alpine County, Amador County, Butte County, Calaveras County, Colusa County, Contra Costa County, Del Norte County, El Dorado County, Fresno County, Glenn County, Humboldt County, Imperial County, Inyo County, Kern County, Madera County, Marin County, Mariposa County, Mendocino County, Merced County, Modoc County, Mono County, Monterey County, Napa County, Placer County, Sacramento County, San Francisco City & County, Santa Clara County, Santa Cruz County, Shasta County, Sierra County, Siskiyou County, Solano County, Sonoma County, Sutter County, Yolo County, Yuba County



If you still have questions, we'll be glad to answer them by phone or by email:

Serving All Of Northern California