One of the most common questions facilities managers and office managers ask when setting up a cleaning contract is: how often does our office actually need to be cleaned? The honest answer depends on five main factors: footfall, type of work carried out, lease or building management obligations, your own standards, and budget. This guide walks through each factor and helps you arrive at the right cleaning frequency for your London office.
Daily Cleaning: When Is It Necessary?
For most London offices, daily cleaning is the baseline standard. Any office with more than ten regular occupants generating daily waste, using shared kitchen facilities and maintaining washrooms to a hygienic standard for staff and visitors will need cleaning every working day. The alternative is a rapid accumulation of waste, surface soiling and washroom deterioration that creates a poor impression and, more seriously, a hygiene risk.
What Drives Daily Cleaning Frequency
Footfall is the primary driver of cleaning frequency. An office with 50 staff generates significantly more surface soiling, bin volume and washroom usage than an office with five. The Health and Safety Executive (HSE) guidance on workplace welfare confirms that cleaning frequency should be proportionate to how quickly dirt accumulates, and that this is determined primarily by the number of people using the space (HSE ACOP L24, 2013).
Food use is a secondary driver. Offices with kitchen facilities, catering staff or a canteen need more frequent kitchen and dining area cleaning than offices where no food is prepared on site. Food residue, grease and organic waste attract pests and create hygiene risks that deteriorate faster than dust or general surface soiling.
Twice-Weekly Cleaning: The Minimum for Small Offices
For very small offices of under ten staff with limited kitchen use, twice-weekly cleaning is often the practical minimum. This keeps waste levels manageable, maintains washroom standards between cleans, and prevents surface dust and soiling from becoming embedded. Once-weekly cleaning is not sufficient for any occupied office space and typically results in a visible and hygienically poor accumulation between visits.
The Once-Per-Week Problem
Weekly cleaning is one of the most common false economies in the commercial cleaning market. An office cleaned once per week has six days of accumulated soiling at each clean, meaning the operative spends a disproportionate amount of time on the heaviest soiling rather than maintaining a consistently clean environment. The result is often a building that is clean on one day and noticeably deteriorating by midweek.
Periodic and Deep Cleaning: The Frequencies That Matter
Beyond routine daily or weekly cleaning, most offices need a programme of periodic and deep cleaning to maintain areas that routine cleaning does not address. Industry guidance recommends the following minimum frequencies for London offices (British Institute of Cleaning Science, 2023):
Weekly or fortnightly: Sanitisation of all touch-point surfaces including door handles, light switches and lift buttons. Internal glass partition cleaning. Kitchen appliance exterior cleaning.
Monthly: Machine scrubbing of hard floors. Full kitchen clean including appliance interiors. Window cleaning for accessible glazing. Air vent grille cleaning.
Quarterly: Full deep clean of all areas. Carpet hot water extraction or encapsulation. Upholstered furniture cleaning. Duct grille inspection and cleaning.
Annually: Strip and reseal hard floor surfaces. Full HVAC filter access cleaning. Specialist periodic treatments as required by your building management.
What Your Lease May Require
Many commercial leases and building management agreements include specific cleaning obligations for tenants. Common requirements include maintaining carpets to a professional standard (often evidenced by annual professional cleaning receipts), keeping common areas and washrooms to a defined standard, and carrying out an end of tenancy clean to the landlord's schedule on vacating the premises.
Building the Right Programme
The most effective approach is a layered cleaning programme that combines the right daily or weekly frequency for your footfall with a periodic schedule that addresses the areas routine cleaning cannot reach. A well-designed programme keeps your office in consistently good condition, avoids the false economy of insufficient frequency, and protects the condition of your building's floors, fixtures and fittings over time.
Office Cleaning London provides a free site survey for all new enquiries, at which we assess your office, discuss your requirements and produce a recommended programme with transparent pricing. Call 020 3900 0000 or submit an enquiry online to arrange yours.