Medical-grade cleaning. Built for King County. Done right, guaranteed.
Walk into a spotless building every morning without chasing anyone. We handle janitorial and clinical-grade disinfection for King County clinics and offices. Behind us: MSNW Group, trusted at 5,000+ locations across the Pacific Northwest.
- Same-day make-it-right guarantee
- Free quotes within 24 hours
- Crews work evenings & weekends
- Bonded, insured & licensed in WA
Three decades of accreditation behind every clean.
King County Janitorial is part of MSNW Group, held to the standards of the industry's leading building-service, healthcare, and facility associations. Ask any other bidder to show you the same.
Two things, done impeccably.
Most cleaning companies do everything for everyone. We don't. We keep medical and professional spaces consistently, verifiably clean, with protocols built for the places people come to feel better.
Janitorial & office cleaning
Nightly, weekly, or on your schedule: a consistent crew that learns your building and keeps it looking its best every single morning. You never have to ask twice.
Disinfection & sanitization
EPA-registered disinfectants and clinical protocols for the spaces that can't cut corners: exam rooms, waiting areas, and every high-touch surface in between. Documented, verified, and done right.
Trust, built into every visit.
The people who run clinics don't have time to worry about the cleaning. Here's why they stop worrying once they call us.
PNW owned since 1995
Washington born and raised, part of MSNW Group. We answer our own phone and show up to your King County walkthrough in person.
Bonded & insured
Fully bonded, insured, and licensed in Washington. Your facility, your staff, and your patients are always protected.
A stable, dedicated workforce
Low turnover means familiar faces, greater accountability, and consistent quality. Every crew member is vetted, background-checked, and trained to BSCAI standards.
Technology-driven quality assurance
Multi-tiered inspections, CompanyCam-documented site reports, real-time Cleancode accountability tracking, and quarterly clinic manager surveys. You see what we see.
Responsive support, 24/7
Routine request or urgent need, our team answers around the clock. Uninterrupted service and peace of mind, never a voicemail black hole.
Our make-it-right guarantee
If something isn't right, we make it right the same day. No arguments, no excuses. That's the promise behind every clean.
Trained in a clinic before they ever touch yours.
We train janitorial staff assigned to medical and healthcare accounts through hands-on, in-person instruction in a mock clinical environment before they ever step onto a live site. Working through realistic exam rooms, patient areas, and clinical fixtures under direct supervision, staff build the muscle memory and precision that healthcare environments demand.
They practice terminal cleaning and infection-control protocols until they are second nature. This immersive training model is central to how we prepare our people for clinical work, and we continue to invest in and expand it.
Every technician assigned to a medical account completes the training center before their first shift in your building.
We care for your space like it's our own backyard. Because it is.
Our crews work evenings and weekends, so your doors open to a spotless space every morning.
From first call to spotless, in four steps.
Free on-site walkthrough
We visit your clinic, learn your priorities, and send a clear, no-obligation quote within 24 hours.
A plan built for your space
Scope, schedule, and protocols tailored to your facility, from the exam rooms to the front desk.
Your vetted crew arrives
The same background-checked team, trained on your plan, showing up on schedule like clockwork.
We check our own work
Routine quality inspections and a direct line to us. Standards never slip, and you're never left guessing.
A Washington company, keeping King County well since 1995.
We opened in 1995 with a simple idea: treat every space like it belongs to someone we care about. Three decades later, that idea has grown into MSNW Group, trusted to care for more than 5,000 locations across the Pacific Northwest.
Across King County, we focus on the spaces that demand the most: clinics and medical offices. The people who trust us with them deserve a team that never cuts corners. And because our crews stay for years, the faces you see stay familiar.
Trusted in waiting rooms across King County.
“Our exam rooms have never turned over so cleanly. Patients notice, and so do our providers.”
“The first vendor in years I never have to follow up with. It's just done, every single morning.”
“Vetted, consistent, and genuinely kind to our staff. Exactly what a medical office needs.”
Every corner of King County, covered.
From the Sound to the foothills: if your building is in King County, we clean it. Here are a few of the communities we serve:
Get your free quote.
Tell us a little about your space. We'll get back to you within 24 hours to schedule a free, no-obligation walkthrough.