SD Advance Corp
Long Island commercial cleaning
Long Island's trusted commercial cleaning company.
Office cleaning, medical office cleaning, banquet hall cleaning, daycare cleaning, and urgent care cleaning across Nassau County. Licensed, insured, and 5-star rated on Google.
5.0 Google rating
Trusted by Long Island offices, venues & medical practices
Licensed & insured on Long Island
5.0 Google rating
Free on-site walkthrough
Same-day callbacks · 24/7
Real Long Island commercial properties
Office buildings, medical suites, and event venues we keep guest-ready.
Why owners call
A clean building protects your business.
On Long Island, your building is your reputation. We make sure it shows up clean every single day.
Cleaner image
Spotless lobbies, polished floors, and bathrooms tenants and clients actually trust.
Licensed & insured
Fully insured Long Island commercial cleaning. Trained crews. CDC-compliant products.
Same-day callbacks
Real phone, real follow-through. We answer fast and show up when we say we will.
Specialties
Commercial cleaning we specialize in.
Niche, sensitive, and high-standard cleaning jobs across Long Island.
Licensed & insured in New York
NY State certified
Follows all CDC guidelines
Green Pro certified cleaners
All staff trained & certified
Cross-contamination protocols
Services
Commercial cleaning services on Long Island.
Commercial cleaning
Office cleaning, medical office cleaning, day porter, and after-hours commercial cleaning across Long Island.
Banquet halls & event venues
Banquet hall cleaning, Bar/Bat Mitzvah and Brisk cleanup, pre-event prep, and fast venue turnarounds.
Floor strip, wax & detailing
Floor stripping, waxing, polishing, window washing, and storefront cleaning that keeps your property guest-ready.
About
A Long Island cleaner you can actually reach.
Steven runs SD Advance Corp himself — no call centers, no runaround. Just a licensed, insured Long Island commercial cleaning company that picks up the phone.
5.0
Google rating
24/7
Availability shown on business profile
Proof of work
Real Long Island buildings. Real results.
How it works
Quote today. Walkthrough this week.
Fast response
Tell us about your building, schedule, and trouble spots. We call back same-day so the job actually moves.
Free walkthrough
Steven walks the property, scopes the cleaning, and sends a clear written quote inside 24 hours.
Consistent cleaning
Trained crews, CDC-compliant products, and a clean building your tenants, guests, and clients can feel.
Service area
Commercial cleaning across Long Island & Nassau County.
Offices, medical suites, banquet halls, daycares, urgent cares, and worship spaces — wherever Long Island businesses need dependable commercial cleaning.
East Meadow, NY
1788 Albermarle Ave, East Meadow, NY 11554
Google business profile shows a 5.0 rating and 24-hour availability.
Reviews
5.0 on Google. Trusted across Long Island.
5.0
Google rating
"Showed up on time, did the job right, and the office has looked sharp ever since. Easiest commercial cleaning company we've worked with."
Property manager
Office building · Nassau County
"Steven is the real deal. We use SD Advance for our weekly cleaning and the Sabbath turnovers — never had an issue."
Synagogue administrator
Long Island
"Booked them for a Bar Mitzvah cleanup and the hall was spotless before the next morning's service. Worth every dollar."
Banquet hall owner
Nassau County
No-pressure offer
Book a free walkthrough. No pressure.
Steven walks your property, flags trouble spots, and sends a written cleaning quote in 24 hours. If we're not the right fit, you keep the notes.
"They showed up when they said they would, did exactly what we agreed on, and the building has looked sharp ever since. Easiest cleaning company we've worked with."
Property manager · Nassau County
Verified from 5.0 Google rating
Request service
Request a quote or book a walkthrough.
Fill this out and Steven can follow up with pricing, a walkthrough, or the next best time to connect.