boxtops is right, as usual.
If you work at, or from, home, the part of the property used for work may be liable to business rates whilst the remainder of the property will continue to be liable to council tax, although an alteration may be made to its banding.
The Valuation Office considers a number of things when deciding whether or not part of your property should be liable to business rates. These include the extent and frequency of the business use of the room, or rooms, and any modifications made to the property to accommodate that use.
Each case is considered on its own merits, and the Valuation Office may visit your property to check the facts before an assessment is made for business rates. Factors they may take into account include:
· extent of use of the relevant accommodation
· frequency and intensity of use of accommodation
· alterations made to the building to accommodate the business thereby losing the domestic character of property
· whether furniture and equipment are of a kind commonly found in domestic properties
· employees or clients coming frequently or regularly to the premises
· hours worked
· advertisement of business at the premises, that is, a nameplate on the door
· planning permission for building works or use of building being obtained. This is not conclusive but is indicative.