National Janitorial

National Janitorial National is a complete facilities management company. Serving commercial and residential locations. Servicing Tri State Area.

Over 30 years of experience and knowledge of the building services industries. Serving customers with small store fronts to largest companies! National can accommodate companies with custom daily, weekly or monthly service programs that can fit any budget. Services include and are not limited too. Floor waxing and stripping, carpet cleaning, nightly porter services, window cleaning, flood restorat

ion, mold inspections and remediation, IAQ testing, all janitorial equipment and supplies. National Janitorial is a fully insured and bonded company.

Guy is a legend!
04/05/2026

Guy is a legend!

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

04/05/2026

Call or DM Today for your free estimate. 631-666-5200 Serving since 1988

04/05/2026

DM for free estimate!

National Janitorial provides comprehensive power washing and soft washing services, encompassing roof cleaning, paver cl...
04/05/2026

National Janitorial provides comprehensive power washing and soft washing services, encompassing roof cleaning, paver cleaning, house washing, and fence washing. As the trusted janitorial service provider on Long Island since 1988, we pride ourselves on offering industry-leading service and competitive pricing. Schedule your appointment today to experience the National Janitorial difference that earns us the title of New York's Cleanest. For more information, please call 631-666-5200 or send a direct message.

02/14/2026
Thank you George & Nick!
09/22/2025

Thank you George & Nick!

Thank you Commack! Call National for all you house washing, paver cleaning needs. Free estimates. Servicing Long Island ...
05/09/2025

Thank you Commack!
Call National for all you house washing, paver cleaning needs. Free estimates. Servicing Long Island since 1988!
Office 631-666-5200
Cell 631-492-7005

05/09/2025

Da grind!

Schedule your complimentary estimate today. 631-666-5200. Comprehensive Soft Washing and Pressure Washing Services avail...
04/16/2025

Schedule your complimentary estimate today. 631-666-5200. Comprehensive Soft Washing and Pressure Washing Services available! Save 20% on all Jobs booked before May 1st

04/06/2025

Address

1347-5 Lincoln Avenue
Holbrook, NY
11741

Opening Hours

Monday 9am - 4pm
Tuesday 9am - 4pm
Wednesday 9am - 4pm
Thursday 9am - 4pm
Friday 9am - 4pm

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