The cost of an arborist in British Columbia varies depending on the type and complexity of the job. Generally, a basic tree trimming or pruning service can range from $150 to $400 per hour. More complex services such as stump grinding, removal of large trees, or cabling and bracing may cost up to $1,000 per hour. It is important to note that additional costs may be incurred for travel time and disposal fees. To get an accurate estimate for your specific project, it is best to contact a local arborist for more information.