Manantial Cleaning Services Inc
“They threw out trash, deep cleaned every room, scrubbed walls and floors (my mom is a 30 year indoor smoker), threw out expired food b the kitchen and organized everything.”
Best Commercial & Office Cleaning near Smithtown, NY
3 of these companies are based in Smithtown; the others serve Smithtown from towns including Hauppauge (4 mi), Ronkonkoma (7 mi) and Setauket- East Setauket (7 mi).
4 open 24/7 · 8 open weekends · 14 rated 4.5+ · 1 shows a license
Data verified October 18, 2026
XYZ Cleaning Contractors
Long Island Cleaning Crew
“Excellent job cleaning up after my daughters 13th birthday party!”
Iac-Indoor Air Care Professionals
“Renzo and Oscar did an amazing job cleaning out our 2 system air ducts.”
Deluca Cleaning Systems
“I am a property manager and recommend Deluca for all of your cleaning needs.”
M.E Janitorial Cleaning Services
“Great service and my floors look like brand new (although they are 20 years old lol)”
Listed for businesses in and around Smithtown, NY, these 15 companies hold commercial cleaning contracts. Contract cleaning is priced off a written scope and a frequency schedule, so two quotes are only comparable when both are working from the same specification.
Area overview: Smithtown, NY
The 15 companies on this page are rated from 4.0 to 5.0 across 901 reviews; 7 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these companies on specific qualities, they most often praise professionalism (87%), quality (87%) and responsiveness (70%). The topics that come up most in reviews of the companies on this page are "price", "communication" and "efficient". 4 are open around the clock; 8 are open on Saturdays and 7 on Sundays. 1 shows a license on its website and 1 has a BBB rating of A or A+. Domain records put 6 websites of the companies on this page at ten or more years old; the oldest dates from 2003. 4 offer emergency call-outs; 6 give free estimates; 3 are family- or locally-owned and 3 list coupons or special offers. We have a website on file for 14 of the companies on this page; 14 publish a contact page; 9 list a public email and 2 take bookings online. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book.
Does a contractor need an address in Smithtown?
An address in Smithtown is given by 3 of the 15 commercial cleaning companies here; the others come from other towns within 15 mi. For nightly work, the supervisor's drive matters more than the office address, since a site that is an hour from the nearest manager gets inspected less often.
Cleaned To Perfection
“As a small business owner who works from home, freeing my time to focus on my business and to do things I love without having to worry about cleaning up is such a relief.”
Universal Maids
“They are very responsive and easy to arrange a cleaning.”
Samter Cleaning Services
“Samantha is also super communicative and is always so flexible and accommodating to our crazy schedules.”
Kear Solutions
“They were great with communication and making sure my needs were met.”
National Janitorial
“I would whole heartedly recommend National Janitorial to anyone looking for powerwashing services.”
We Maid It
“They also organized all my WASHED CLOTHES AND PLACE THEM NICE ON MY BED TO PUT AWAY!”
Executive Cleaning Services
“After years of recurring issues with our cleaning, we finally found a company that was willing to take on our unique cleaning requests.”
Olympic Dependable Maintenance
“The crew did a thorough job with attention to detail, fast response to our needs with friendly service.”
Supreme Deep Cleaning Services
“I can always count on Supreme Deep Cleaning Services to get my home ready for special occasions.”
Why these companies made our list
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