The current B.C. Building Code does not provide sufficient flexibility to allow existing suites to meet Code requirements without incurring significant reconstruction costs.Delta wants to make it easier for homeowners to have secondary suites.
Among Delta's resolutions to the provincial government is to allow secondary suites in side-by-side multi-family buildings such as duplexes, townhouses and row housing.
Delta refers to "Alternate compliance methods" which means accepting a construction method with a reduced performance that is still satisfactory and not attributed to fire safety.
Delta’s secondary suite program has gone through a few revisions in recent years including the requirement for a business licence for all suites, unless they are unoccupied or is occupied by immediate family.
https://www.delta-optimist.com/news/delta-wants-to-remove-barrier-to-secondary-suites-1.24169708