Office cleaning frequency: how often a 5, 20 and 50-desk office really needs cleaning

Most office managers inherit a cleaning schedule rather than design one. The same template that worked for 8 desks in 2019 still runs at 24 desks in 2026, and the cracks show up as smell complaints on a Tuesday morning and a kitchen sink that nobody owns.

We run cleaning contracts for 41 SME offices across Hatfield, Stevenage, Watford and St Albans. The frequency a site actually needs maps almost perfectly to three things: headcount, footfall through reception, and whether food is prepared on site. Square footage barely moves the needle.

5 to 12 desks: 2 visits a week, 90 minutes each

Below 12 desks the bottleneck is touchpoints, not floor area. A two-visit week on Tuesday and Friday keeps washrooms, the kitchen and the bin store inside acceptable hygiene without paying for daily attendance the space does not justify.

• Daily (staff): empty desk bins on Friday into central, wipe own desk weekly.
• Visit 1 (Tue, 90 min): washrooms full sanitise, kitchen surfaces and sink, vacuum traffic lanes, refill consumables.
• Visit 2 (Fri, 90 min): full vacuum and mop, kitchen deep wipe including fridge handles, glass on the front door, bins out.
• Monthly (60 min add-on): high dust, vents, behind kitchen appliances.

13 to 30 desks: 3 visits a week, 2 hours each

This is the band where most clients try to stretch a 2-visit schedule and lose the kitchen by month three. A 3-visit week splits the load so no surface waits 96 hours between cleans.

• Mon, Wed, Fri evening visits after 18:00 to clear the day's footfall.
• Kitchen gets a 25-minute dedicated block per visit. This is the single biggest quality lever.
• Washrooms cleaned and restocked every visit, with a paper log signed inside the cubicle.
• Monthly: carpet spot-treat, internal glass, kick plates.

31 to 60 desks: 5 visits a week, daily

At 30+ desks the maths flips. The cost of a sick-day spike from skipped washroom cleans outweighs the cost of a daily cleaner. We move clients to a 5-night schedule with a dedicated lead cleaner on the site rather than a rotating pair.

• Daily 2.5 hour evening clean covering desks (clear-desk policy required), washrooms, kitchens, breakout, reception.
• One named lead cleaner, one named back-up. Continuity halves quality complaints.
• Day porter for 90 minutes at lunch if reception footfall exceeds 60 visitors a day.
• Quarterly: carpet hot-water extraction, internal window glass, deep kitchen.

What this costs in Hertfordshire, 2026

• 5 to 12 desks, 2 visits/week: £340 to £480 per month.
• 13 to 30 desks, 3 visits/week: £780 to £1,180 per month.
• 31 to 60 desks, 5 visits/week: £1,950 to £2,950 per month.

All figures include consumables (paper, soap, bin liners), public liability, and the monthly compliance pack. They exclude window cleaning above ground floor, carpet extraction, and one-off deep cleans.