OCS Janitorial

Let's make a visible difference in your business.

An eco-friendly janitorial service that cleans and sanitizes commercial spaces in the Greater Seattle Area.

seattle office cleaning

Our Promise

Your office should have employees and customers feeling comfortable and cared for. You should be able to walk into a freshly cleaned office every morning and get to work right away. 


At OCS, we make cleaning a breeze. Once we establish a plan and schedule service for your space, we do our best to stay invisible to you, your staff, and your customers while making your office shine. It is a difference that you can see, feel, and smell.


OCS is an invisible cleaning service that will make a visible difference in your business.

Professional Janitorial Service in King County, WA

OCS Janitorial provides commercial cleaning and disinfecting services for King, Pierce, and Snohomish Counties.


“I don’t want to have to think about cleaning – I just want it done and done well.”


If that sounds like something you would say, OCS is your kind of janitorial service. Our team of professional cleaners will have a detailed plan for your space. Each cleaner is well-compensated and invested in the quality of their work. And if you have a request or a concern, Barbara, the owner of OCS, is standing by.


In addition to keeping your building polished, our job is to make your job easier. That means working around your schedule and being invisible to employees and clients. The only evidence of us being there is a cleaner, sanitized space. 

professional janitorial service in king and snohomish counties
detailed cleaning
We recommend an initial deep cleaning which often includes services like furniture detailing, steam cleaning bathrooms, and wiping down walls. We typically recommend a detailed cleaning once per quarter.
Scheduled Cleaning
Based on the needs of your space, we will recommend a frequency for regular cleanings. Our services range from daily to monthly.
desk and office cleaning - janitorial service

We specialize In...

Eco-Friendly Cleaning Services

Nothing is more important to us than the health and safety of our clients and community. That’s why we choose eco-friendly cleaning solutions and practice proper disposal procedures. Being good stewards of the environment is important to us.

Commercial office cleaning

A professionally cleaned office can make a visible difference in your business. It projects a positive image to your clients and partners, and it provides your employees with a safe and healthy environment where they can feel safe and comfortable.

Day-porter service

Keeping your restrooms and lobbies clean and maintaining conference rooms are just a few of the tasks that day porters accomplish every day. Our day porters complement the work environment and blend in well with the atmosphere.

Health and medical facilities

The professional cleaning of a medical or dental office requires an astute attention to detail. OCS is highly experienced in cleaning medical offices.

churches and religious buildings

Don’t risk having your church less than spotless for weekly services by entrusting your building’s cleaning needs to just anyone. OCS is a church cleaning service you can trust. 

HOA Cleaning

Your homeowners or leaseholders should always be reminded that they have chosen a first-class HOA. We specialize in cleaning common areas of condos.


Pressure Washing

We offer pressure washing around the exterior of our clients' offices and buildings to make a great first impression on visitors.

Carpet Cleaning

If your carpets are in need of a deep clean, we can make them look like new.

Bathroom Steam Cleaning

The cleanliness of a restroom can make or break the reputation of a business. Our steam cleaning service makes bathroom sparkle.

Detailing Furniture

Restore the original luster of your office furniture with our proprietary furniture detailing process.

Door & Wall Maintenance

Keeping stains and grime off walls and door is a fundamental part of cleaning. Regular door and wall wipe down are part of our services.

Window Washing

We provide regular interior window cleanings and offer periodic external window washings.