Vacancy rates are a key indicator of the health of the rental housing market. A vacancy rate between 3% to 5% is considered to be a sign of a balanced market, where supply is meeting demand. However, persistently low vacancy rates can make it difficult to find suitable and affordable rental housing, especially for lower income households. The data presented here focuses on the purpose-built rental market (apartments and townhomes), which accounts for roughly one-third of all rental units in Metro Vancouver. While vacancy data for privately rented condominiums is available separately, data for other secondary rental types is limited.