Commercial Cleaning
& Facilities Services
All Seasons Corporation provides a comprehensive range of janitorial and facilities services to commercial properties across the DC Metro region. Every service is performed by our own trained, uniformed, and insured staff — never subcontracted. We customize each program to match the specific needs, schedule, and budget of your building.
Our Services
All services are available throughout Washington DC, Northern Virginia, and Maryland. We serve commercial office buildings, multi-tenant properties, trade associations, government contractor facilities, and mixed-use developments of all sizes.
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Our core offering — recurring janitorial services tailored to your building's needs and schedule. We service commercial office buildings, multi-tenant properties, trade associations, and mixed-use facilities 5 to 7 days per week, including weekends and holidays when required. All work is performed by supervised, uniformed All Seasons staff under a clear scope of work and service agreement.
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A dedicated on-site Day Porter is your building's first line of maintenance during business hours. Our Day Porters handle restroom checks and restocking, lobby and common area upkeep, spill response, trash removal, light maintenance coordination, and anything else that keeps your building looking its best while tenants and visitors are present. All Seasons Day Porters are trained, uniformed, and professionally supervised.
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After-hours cleaning performed by supervised crews under the direction of a qualified foreperson. Night cleaning includes office areas, restrooms, kitchens and break rooms, common areas, lobbies, and stairwells. Our supervisors perform nightly walkthroughs and maintain an on-site communication log so that any conditions requiring attention are flagged before your staff arrives the next morning.
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Our Lobby Attendants provide professional front-of-house coverage for your building's main entrance and reception areas. Available in shift configurations from single coverage to 24/7 multi-attendant arrangements, our lobby staff maintain the cleanliness and presentation of high-visibility areas throughout the day. This service is especially valued in Class A office buildings and association headquarters where first impressions matter.
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Comprehensive hard-surface floor maintenance including stripping, waxing, burnishing, and high-speed buffing. We work with all floor types — vinyl composition tile (VCT), polished concrete, natural stone, ceramic tile, and more. Our technicians are trained on the specific care requirements of each surface type and use professional-grade equipment to deliver results that go beyond standard janitorial cleaning.
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Professional carpet cleaning and maintenance using hot water extraction, encapsulation, and dry cleaning methods depending on the fiber type and condition. Our technicians perform pre-cleaning inspections, apply appropriate pre-treatments, address stains, and extract residue to leave carpets clean, deodorized, and dry as quickly as possible. We schedule around your building's occupancy to minimize disruption.
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Interior and exterior window cleaning for commercial buildings of all sizes. Our window cleaning technicians use environmentally responsible cleaning solutions, squeegees, and water-fed pole systems to clean glass surfaces at ground level and on upper floors. We schedule window washing projects to coordinate with your building's operations and avoid peak occupancy hours.
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High-pressure cleaning services for building exteriors, garages, parking structures, entrances, sidewalks, loading docks, and hardscaped surfaces. Pressure washing is essential for maintaining the appearance and safety of exterior areas — removing oil, gum, mold, algae, and accumulated grime. All work is authorized by signed work order prior to scheduling.
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Fast-turnaround cleaning services following conferences, meetings, receptions, and building events. Our post-event crews restore conference rooms, auditoriums, lobbies, and common areas to full operational condition — removing food and beverage waste, resetting furniture, cleaning restrooms, and addressing any special conditions left by the event. We coordinate scheduling directly with building management to meet your turnaround requirements.
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Detailed cleaning following construction, renovation, or tenant improvement projects. Post-construction cleanup requires a different level of thoroughness than standard janitorial work — removing construction dust, debris, adhesive residue, paint overspray, and protective film from all surfaces, windows, floors, and fixtures. All Seasons has experience coordinating with general contractors and property managers to deliver move-in-ready spaces on schedule.
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Custom scope projects that fall outside the standard recurring service program. This includes deep cleaning initiatives, seasonal projects, move-in/move-out cleaning, emergency response cleaning, and any other special requirement your building may have. All special projects are scoped in writing, priced separately, and authorized by signed work order before work begins.

