Kamala Rao explains that in Vancouver, one of the main differences between this housing type and other densification techniques is that they "can't be sub-divided or sold separately from the main house on the lot. They can only be used for additional family space or rental income."
Rao explains why this is a smart strategy for cities and towns attempting to add housing without stirring up NIMBY resistance:
"Think about it: what other city has successfully added density to long-established, single-family neighbourhoods filled with $1 million-plus homes? The very thought of it conjures up images of staunch NIMBYism. The City of Vancouver's deft branding and effective outreach smoothed the roll-out of its laneway housing bylaw, keeping NIMBY opposition to a minimum."