Every new Connecticut business filing, every dayMSK Janitorial Services
Mark Kleinhenz, Principal
MSK Janitorial Services LLC provides professional commercial and residential cleaning, janitorial services, floor care, and facility maintenance throughout Connecticut. The business is operated by Mark Kleinhenz and is based at 246 Goose Lane in Guilford, CT.
Filed July 20, 2026 · Guilford, CT · New Haven County
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Connecticut Secretary of the State (business.ct.gov) · Entity 3482778 · Retrieved July 27, 2026
About MSK Janitorial Services
MSK Janitorial Services LLC was filed in Connecticut on July 20, 2026, as a janitorial services company for commercial and residential cleaning. The domain was registered three days after the filing, on July 23, 2026, through IONOS SE. The website is modern and confirmed to match the filing name and address. The principal, Mark Kleinhenz, is listed as the owner. No annual report or EIN on file yet. We estimate revenue under $100K and 1 to 5 employees, with a brick-and-mortar footprint.
- Domain registered three days after the filing date.
- Website confirmed to match the filing name and address.
- Principal Mark Kleinhenz listed as owner.
- No annual report or EIN on file yet.
- We estimate revenue under $100K and 1 to 5 employees.
Compiled from the state record, the company's public web presence, and our own research; revenue, employee, and footprint figures are estimates, not verified financials. Updated August 23, 2026.
One of 25 new businesses registered in Guilford in July 2026, and the only janitorial services business registered there that month.
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Filing Details
Verified Business Profile
Contact Information
Verified Website Profile
We matched this business to its website and pulled the domain's registration (WHOIS) record. Domain age is one of the strongest signals that a filing is a truly new business and not a re-filing or paperwork change.
Officers / Authorized Persons
Frequently Asked Questions
When was MSK Janitorial Services registered?
MSK Janitorial Services was registered as LLC on July 20, 2026 in Connecticut.
Where is MSK Janitorial Services located?
MSK Janitorial Services is based in Guilford, CT, 06437-2186, in New Haven County.
What type of business is MSK Janitorial Services?
MSK Janitorial Services is classified as a janitorial services business (commercial and residential cleaning).
Does MSK Janitorial Services have an EIN on file?
No EIN was found on file for MSK Janitorial Services at the time of registration.
Who Sells to This Business
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