A deep clean is not a better daily clean. It is a different job done with different equipment at a time when the building is empty: machine work on floors, everything above head height, inside and behind the things a daily routine never moves, and the parts of the washroom and kitchen that need to be taken apart. Buy it as a scheduled item, not as a reaction to a complaint.
What is in a deep clean and not in a daily one
Hard floors scrubbed, stripped or burnished by machine rather than mopped. Carpets hot water extracted. High level dusting of ledges, pipework, light fittings and the tops of partitions. Internal glass both sides. Chairs and soft seating. Kitchen appliances cleaned inside, including behind and underneath. Washroom descaling and grouting. Air grilles and diffusers wiped. Skirtings, door frames and the backs of doors.
When a premises actually needs one
Twice a year suits most offices, usually before winter and at the start of summer. Sooner if you have had building work, a change of occupier, a pest or water incident, or a period of heavy footfall. A deep clean is also the honest reset when a daily contract has slipped, though repeating one every quarter is a sign that the daily specification, not the deep clean, is what needs fixing.
Floors are usually the whole job
Office floor cleaning is where most of the money and nearly all of the risk sits. Vinyl and safety flooring need the right pad and chemical or you damage the finish. Timber needs almost no water. Stone and terrazzo need pH neutral products. Carpet needs drying time you have to plan for, which is why floor work usually happens on a Friday night. Ask which method the contractor will use before they arrive, not after.
Getting a comparable quote
Give the area in square metres by floor type, the number of washrooms and kitchens, and the access window. Ask for the price to include moving and replacing furniture, because a quote that assumes a clear floor is a quote for a building you do not have. Then ask how long the area is out of use, which is the real cost to your business.
Questions people ask about office deep clean
How often should an office be deep cleaned?
Twice a year is typical for a normal office. More often usually means the daily specification is too thin rather than that the building is unusually dirty.
How long does an office deep clean take?
A single floor is commonly one night for a small team. Carpet extraction adds drying time, so the area may be unusable until the following morning.
Is a deep clean the same as commercial deep cleaning after an incident?
No. Cleaning after flooding, fire or a biohazard is a restoration job with different equipment, different disposal rules and different insurance.
Should a deep clean be in the main contract?
Yes, as a scheduled periodic item with a frequency and a price. Buying it ad hoc costs more and turns a routine into a negotiation every time.