Commercial janitorial & floor care — Pleasant Hill, CA
Krystal clear floors.
Spotless everything else.
Nightly janitorial, deep cleans, and post-construction cleanup for offices, schools, medical, gyms, churches, and HOAs across Northern California — built on 14+ years of stripping, sealing, and polishing commercial floors.
Trusted by Grace Cathedral School for Boys · Grace Cathedral · 111 Deerwood
Request a Free Quote
Free walkthrough · Flat quote · No pressure
Licensed · Bonded · Insured
COI on request
Floor care expertise
14+ years
Service scope
Commercial only
Crew schedule
Nights & weekends
Commercial Cleaning Services
Everything your facility needs under one roof — recurring janitorial contracts, one-time deep cleans, and the specialty floor work other companies subcontract to us.
Commercial Janitorial Services
Recurring nightly and weekly janitorial programs for offices, schools, churches, and commercial buildings — licensed, bonded, insured crews that show up every time.
Learn moreOffice Cleaning
Nightly and weekly office cleaning for suites, floors, and full buildings — restrooms, breakrooms, workstations, and glass handled by consistent, trusted crews.
Learn moreFloor Stripping & Waxing
Full VCT strip-outs, sealing, and multi-coat finish application by floor specialists with 14+ years in the trade. High-gloss results that hold up to traffic.
Learn morePost-Construction Cleaning
Rough, final, and touch-up phase cleaning for commercial construction and tenant improvements — dust-free, streak-free, and ready for walkthrough on your deadline.
Learn moreCommercial Deep Cleaning
One-time and periodic deep cleans that reach what routine janitorial never touches — vents, baseboards, grout, high dusting, and behind everything.
Learn moreCommercial Floor Care
The floor specialists: VCT, concrete, marble, natural stone, tile, and hardwood — maintained, restored, and polished by a company built on 14+ years of floor work.
Learn moreOur Specialty
The Floor Care Specialists Other Companies Call
Before KCS existed, our founder spent 14+ years stripping, sealing, and polishing floors across the Bay Area. That expertise is still the heart of the company: VCT stripping & waxing, diamond-ground concrete polishing, and marble & natural stone restoration done in-house — never subcontracted.
Strip & Wax
Full VCT strip-outs, sealing, and multi-coat finish application by floor specialists with 14+ years in the trade. High-gloss results that hold up to traffic.
Concrete Polishing
Diamond grinding, densifying, and polishing that turns bare concrete into a durable, light-reflective floor — for warehouses, showrooms, offices, and retail.
Stone Polishing
Restoration honing and polishing for marble, granite, terrazzo, and travertine — etching, wear paths, and dullness removed, natural clarity restored.
Carpet Cleaning
Hot water extraction and low-moisture interim cleaning for commercial carpet — traffic lanes lifted, spots treated, dry by morning, scheduled around your hours.
Who We Clean For
From Class-A office towers to private school campuses, our crews are trained for the facilities that demand more than a mop and a promise.
Office Buildings & Suites
Nightly janitorial and floor care for Class-A towers, suburban office parks, and multi-tenant suites — delivered by licensed, insured crews after your tenants go home.
Private & Charter Schools
Trusted by Grace Cathedral School for Boys. Background-checked night crews, gym floor care, and cleaning schedules built around the academic calendar.
Medical & Dental Facilities
Cross-contamination-conscious cleaning for medical and dental offices — trained crews, EPA-registered disinfectants, and protocols that respect clinical spaces.
Gyms & Fitness Centers
Sweat-zone disinfection, rubber flooring care, and locker rooms members trust — cleaned overnight so your gym opens fresh at 5 a.m.
Churches & Places of Worship
Trusted by Grace Cathedral. Sanctuary stone and hardwood floor care, weekly service resets, and fast turnarounds between weddings, funerals, and worship.
HOAs & Community Associations
Common-area cleaning for HOAs: lobbies, clubhouses, fitness rooms, and pool decks maintained on a schedule your board and residents can see working.
Property Management Companies
One janitorial vendor across your whole portfolio: consistent standards, day porter support, fast tenant-turnover cleans, and a single point of contact.
Retail & Restaurants
After-hours cleaning for storefronts and dining rooms: polished concrete programs, grease-safe floor care, and spotless glass that sells before customers walk in.
Serving Northern California
Headquartered in Pleasant Hill with crews across the east bay, tri-valley, downtown san francisco, solano county, sacramento, and the central valley.
Frequently Asked Questions
Do you offer residential cleaning?
No — KCS is 100% commercial. We clean offices, schools, medical facilities, gyms, churches, HOA common areas, and retail spaces. Keeping our focus commercial means our crews, equipment, and processes are built for business facilities.
What areas do you serve?
We serve The East Bay, Tri-Valley, downtown San Francisco, Solano County, Sacramento, and the Central Valley — from our Pleasant Hill headquarters we cover Contra Costa County, the Tri-Valley, Oakland and the East Bay, downtown San Francisco, Solano County, the Sacramento area, and the Central Valley down to Modesto.
How does pricing work?
Every facility is different, so we start with a free walkthrough. We look at square footage, floor types, traffic, and your schedule, then send a flat monthly or per-job quote. No hidden fees and no lock-in surprises.
Are you licensed and insured?
Yes — KCS is licensed, bonded, and insured. We're happy to provide certificates of insurance for your property manager or building requirements before we start.
Can you clean after hours?
Absolutely. Most of our janitorial accounts are serviced at night or on weekends so your business never skips a beat. Day porter-style visits are available too.
What makes KCS different from other janitorial companies?
Floors. Our founder spent 14+ years mastering floor care — stripping and waxing, concrete polishing, marble and stone restoration — before building KCS. Most janitorial companies subcontract floor work; we're the specialists others call.
Free walkthrough · Flat quote
Walk the floor with us.
Tell us about your building and we'll schedule a free walkthrough — then send a flat, no-surprises quote.