What to Include in Your Quarterly Deep Clean Checklist

Routine daily cleaning is essential for maintaining a tidy, safe environment—but every few months, your facility needs a deeper level of attention. A quarterly deep clean goes beyond surface-level maintenance to tackle dirt, buildup, and overlooked areas that can impact everything from employee health to the lifespan of your assets.

Whether you're managing a corporate office, medical building, retail space, or commercial facility, here’s what your quarterly deep clean checklist should include:

1. High-Touch & High-Traffic Surfaces

Even with regular cleaning, these surfaces benefit from an extra layer of disinfection:

• Light switches, elevator buttons, door handles, and railings

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• Break room appliances: microwaves, coffee machines, refrigerator handles

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• Shared office equipment: keyboards, phones, copiers, and touch screens

2. Flooring Deep Clean

Your floors take a beating. Quarterly care helps preserve their appearance and safety:

• Carpet extraction to remove embedded dirt and allergens

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• Stripping and waxing of VCT floors

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• Machine scrubbing of tile or concrete flooring

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• Spot treatment for high-traffic areas and stains

  
  

3. Restroom Sanitation

Restrooms can harbor bacteria and odors that go unnoticed with standard cleaning:

• Deep scrub of tile grout, partitions, and baseboards

• Descaling of faucets, toilets, and urinals

• Replacement of air fresheners and restocking of supplies

• Inspection of plumbing for leaks or slow drains

4. Dusting Beyond Eye Level

Dust doesn’t just settle on desks. Quarterly dusting should include:

• Vents and air returns

• Light fixtures and ceiling fans

• Tops of cabinets, shelving, and partitions

• Behind and beneath office furniture

5. Windows and Glass Surfaces

Sparkling windows improve natural light and overall facility presentation:

• Interior and exterior window cleaning (as access allows)

• Glass doors, partitions, and display cases

• Removal of smudges, fingerprints, and hard water stains

6. Kitchenettes and Break Areas

Food prep and eating spaces need a thorough quarterly refresh:

• Deep clean of cabinets, countertops, and backsplashes

• Sanitization of sinks and faucets

• Refrigerator clean-outs and organization

• Trash can washing and deodorizing

7. HVAC & Ventilation Touchpoints

Poor air quality affects productivity and health. Every quarter, check:

• Air filter replacements or inspections

• Dust and debris removal from vents

• Cleaning of air diffusers and return grills

8. Exterior Entryways and Common Areas

First impressions count. Keep outdoor-facing spaces inviting:

• Pressure washing walkways, entries, and stairwells

• Sweeping and debris removal in parking lots and loading areas

• Cleaning entry mats and door thresholds

Why It Matters

Quarterly deep cleans not only enhance appearance—they also:

• Promote a healthier indoor environment

• Extend the life of finishes, flooring, and equipment

• Boost employee morale and productivity

• Reflect positively on your brand and operations

Leave It to the Pros

At SelectPro Facility Services, we tailor our quarterly deep cleaning programs to meet the specific needs of each property we serve—whether you’re in the Bay Area, Irvine, San Diego, or surrounding communities. Our trained teams use professional-grade equipment and eco-friendly products to ensure every corner of your space gets the attention it deserves.

Ready to schedule your quarterly deep clean?

Contact us today to customize a plan that works for your facility.