Massachusetts · Commercial & Janitorial
GSJ Cleaning Services keeps offices, medical facilities, and retail spaces across Massachusetts spotless, with in-house, background-checked teams, structured quality control, and a single point of contact who answers. Trusted by businesses for over 20 years.
Trusted by leading institutions
One of the world's most renowned universities counts on GSJ for reliable, professional cleaning, the same standard we've delivered to businesses across Massachusetts for over 20 years.
Sound familiar?
Most businesses come to GSJ after the same frustrations. We built our entire operation to remove them.
GSJ replaces all of it with reliable in-house teams, a documented cleaning scope, and a dedicated account manager who owns your results.
Commercial cleaning
One provider, one standard, tailored to the way your space is used, the hours you keep, and the compliance you answer to.
Presentable, productive workspaces, cleaned around your schedule with zero disruption to your team.
Learn moreClinic- and dental-grade disinfection with the protocols and documentation your compliance requires.
Learn moreRecurring day-porter and after-hours janitorial that keeps high-traffic facilities consistently spotless.
Learn moreSpotless storefronts and showrooms that protect your brand and elevate the customer experience.
Learn moreLobbies, hallways, elevators, and shared spaces kept immaculate for tenants and visitors alike.
Learn moreFine-dust and debris removal that turns a finished build into a move-in-ready space, on your handover date.
Learn moreThe same trusted, background-checked standard, brought home, recurring maintenance, deep cleans, and move in/out.
Built for facility managers
When you're accountable for the building, you need a vendor who makes you look good, not one who creates fires. GSJ is structured for the people who sign off on the work.
Why clients stay
A formal, insured operation. Your business and our team protected on every single visit.
Trained, uniformed, background-checked staff, never anonymous subcontractors.
Documented checklists and scheduled inspections keep results consistent, week after week.
After-hours, overnight, and weekend service that works around your operation, not against it.
How it works
Tell us about your facility. We reply within 24 hours to schedule a visit, no obligation.
We assess your space, traffic, and priorities in person, so the plan fits how you actually operate.
A clear, documented scope and transparent proposal, you know exactly what's covered before we start.
Your dedicated team maintains the facility on schedule, backed by inspections and a direct line to us.
Social proof
“Our offices have never been cleaner, and I never have to chase them. GSJ shows up, communicates, and just handles it. Exactly what I needed.”
“As a practice, hygiene is non-negotiable. GSJ follows the protocols to the letter and keeps our clinic spotless. Fully professional team.”
“We manage several properties and GSJ handles all the common areas. Reliable, insured, and easy to deal with across every site.”
Ready when you are
Request a free, no-obligation walkthrough. We'll assess your space and send a clear proposal within 48 hours, so you can finally stop worrying about the cleaning.