Using a room in your house for the property Business

I was involved in a recent webinair for landlord expenses for renting property and one of the questions was can a claim be amde for using a room in your house/study etc., to run yourproperty business. The response from HMRC waqs that yes you can but only a proportionate amount of the house running costs. I just wish to check is this really possible, its the first time I know about this

Hi Kenneth Marwood,

You can claim any expenses that are incurred 'wholly and exclusively' in carrying out your business.
Please see BIM37007 BIM37007 - Wholly and exclusively: overview.
However you must clearly differentiate between business and personal and keep clear records.
I have attached PIM2100 which states what you can claim.
However it must be apportioned clearly, for example if you have four rooms in your house you can claim a quarter of all running costs so long as they are related to your business.
PIM2100 - Deductions: main types of expense: expenses for own home.

Thank you.