Commercial cleaning company, nationwide
Janitorial, day porter, floor care, and disinfection for offices, clinics, schools, warehouses, and public buildings, with one account manager for your facility.
Free facility assessment
We walk your building and send a written quote.
(202) 968-1190info@national-cleaning.com- Insured and bonded
- Background-checked staff
- Trained crews
- Supervisor inspections
One company for the whole building
National Cleaning Group is a commercial cleaning company for buildings across the United States. One company handles the nightly clean, daytime porter coverage, floor care, and disinfection for your facility. We work under recurring contracts with businesses, property managers, and public agencies, not homeowners.
Call (202) 968-1190 to book a free facility assessment.
- A dedicated account manager
Each client has one person for questions, changes, and the day-to-day running of the account.
- One contract, one invoice
Janitorial, porter coverage, floor care, and disinfection run on a single agreement with one invoice.
- Fast response to urgent requests
Spills, leaks, and last-minute cleanups are handled by the team that already knows your building.
- Schedules that fit your building
Night, early-morning, weekend, or daytime service, set around your hours and access rules.
Facility services
Most facilities start with janitorial service and add porter coverage, floor care, or disinfection where the building needs them.
Janitorial services
Recurring cleaning scheduled around the hours your facility runs.
Restrooms, trash, floors, and high-touch surfaces, usually after close or before opening.
Office cleaning
Lobbies, suites, conference rooms, and break rooms, ready for employees and visitors.
Day porter
On-site coverage during the day for lobbies, restrooms, and common areas.
Floor care
Scheduled care for hard floors and carpet, from burnishing to strip and refinish.
Disinfection
Disinfection of the surfaces people touch most, on the schedule your facility needs.
Light facility maintenance
Small upkeep handled by the team already in your building.
Larger repairs go to your licensed trades.
Need exterior windows, pressure washing, or a post-construction clean? Ask during your assessment. Comparing contractors? Start with how to hire a commercial cleaning company and what janitorial services include.
Industries we serve
Every building type has its own traffic, hours, and rules. The program is built around yours.
Offices and corporate campuses
Lobbies, work areas, conference rooms, and restrooms, on the schedule your tenants expect.
Medical offices and clinics
Waiting rooms, exam rooms, and restrooms, cleaned around patient hours.
Schools and universities
Classrooms, corridors, and restrooms, scheduled around the school day.
Warehouses and manufacturing
Docks, aisles, break rooms, restrooms, and attached offices, timed around your shifts.
Retail and grocery
Sales floors, fitting rooms, restrooms, and entrances, cleaned around opening and close.
Hospitality
Lobbies, public restrooms, meeting rooms, and back-of-house corridors, kept guest-ready.
Government and municipal buildings
Public lobbies, offices, and restrooms, with your access rules built into the plan.
Different kind of building?
Tell us how the building is used and we build the program around its traffic and hours.
(202) 968-1190
Janitorial service and day porter
Janitorial service is the recurring clean, usually after hours or before opening, so the building is ready when people arrive.
A day porter covers the building while it is open: spills, restrooms, conference room resets, and the lobby. Busy lobbies, clinics, and stores often use both. Compare the two in day porter vs night janitor.
Floor care and disinfection
Nightly cleaning maintains your floors. Scheduled floor care restores them: scrub and recoat, burnishing, strip and refinish, and carpet extraction, done when the floor can be closed.
Disinfection focuses on the surfaces people touch most, such as door handles, restroom fixtures, and break room counters. Add it to the nightly program or schedule it as its own service.
How a facility assessment works
Getting a price starts with a free walkthrough, so the number is based on your building, not a formula.
- Tell us the address, the building type, and the days you want cleaned.
- We walk the facility with you: restrooms, floor types, entrances, access hours, and anything your current cleaner misses.
- You receive a written quote for your building.
- Work starts on the date you approve.
Have an RFP? Send the site list, square footage, current schedule, and start date to info@national-cleaning.com. Want a budget benchmark first? Read how much commercial cleaning costs.
Facilities across the United States
We serve commercial facilities nationwide, from a single building to a multi-site portfolio. Call (202) 968-1190 to book your walkthrough. Browse metro details under service areas.
Questions facility managers ask
What is a commercial cleaning company?
A commercial cleaning company cleans business and public buildings under a recurring contract: offices, clinics, schools, warehouses, stores, and government buildings. Unlike a residential maid service, it works around business hours, follows building access rules, carries commercial insurance, and handles nightly janitorial work, daytime porters, floor care, and disinfection as one program.
What does National Cleaning Group clean?
Offices, medical offices and clinics, schools, warehouses, retail stores, hotels, and public buildings across the United States. One program can include janitorial service, a day porter, floor care, disinfection, and light maintenance.
How much does commercial cleaning cost?
It depends on cleanable square footage, how many nights a week you need service, restroom count, floor types, and whether you add a day porter or periodic floor work. We quote each building as a price for its scope after a free walkthrough. Our commercial cleaning cost guide shows the typical ranges and what moves them.
How do you choose a commercial cleaning company?
Ask for a walkthrough before any price, a written scope by area and frequency, proof of insurance and bonding, background checks for anyone with keys, how supervisors inspect the work, and who your single point of contact will be. Then compare bids line by line on the same scope.
What is the difference between commercial cleaning and janitorial service?
Janitorial service is the recurring daily or nightly clean: restrooms, trash, floors, and touchpoints. Commercial cleaning is the wider term and also covers day porters, periodic floor care, carpet extraction, disinfection, and one-time projects. Most buildings need both on one contract.
Do you clean at night, during the day, or on weekends?
Whatever fits the facility. Janitorial service usually runs after close or before opening. Day porters work while you are open. Weekend schedules are set at the assessment.
Where do you provide service?
Commercial facilities across the United States, from a single building to a multi-site portfolio. Call (202) 968-1190 to book a walkthrough.
How do we get started?
Call (202) 968-1190 or email info@national-cleaning.com with the address, the building type, and the days you want cleaned. We book the walkthrough and send the proposal.
Tell us about your facility
Call (202) 968-1190 or request a free facility assessment. We walk the building and send the proposal.