If you collect rent or place tenants in vacant spaces on behalf of your landlord client, the answer is yes. (biggerpockets.com)
About a year ago I wrote a post about a case where the Ontario Superior Court issued a permanent injunction preventing the owner of a property management company from appearing before the Ontario Landlord and Tenant Board on behalf of his landlord clients. (slaw.ca)
Peterborough based DB Fire Safety provides businesses and organisations with comprehensive fire safety support and specialises in carrying out fire risk assessments on behalf of landlords of HMOs (Houses in Multiple Occupancy). (qaeducation.co.uk)