Our office had a presentation from the Victoria Branch of the North West Environmental Group, with regards to residential hazardous materials assessments. The company obtains and performs sample testing of materials in a home that may contain abestos and other hazardous materials. When you want to do a renovation, the assessment only needs to be done on any part of the home that will be disturbed by the renovation. Such testing ranges from $600-$1200 depending on the number of samples needed. This assessment will be required by the municipality before they issue any building or demolition permits.
If you would like to learn more, You can contact them directly at : http://www.nwest.bc.ca/_index.html