If you are taking a conventional lease in a multi-let office building, you will usually pay a service charge. This will often cover the maintenance, cleaning and repair of the common and external areas of the building you occupy.
The service charges will also contribute to any onsite amenities you use, such as a concierge, lift maintenance, gym facilities etc. Typically, the greater the level of amenities and quality of the building the higher the service charge.
For conventionally leased offices, the service charge is usually quoted on marketing material as a £ per sq. ft. rate.
For serviced offices, the rent, business rates and service charges are usually quoted as a single monthly rate per desk