Jens von Bergmann ran the numbers on land use in various municipalities in Metro Vancouver. The City of Vancouver is particularly interesting since it has so little land area left undeveloped.

Use City of Vancouver land
single-family attached houses and duplexes 34.0%
roads and right-of-way 28.1%
recreation, open space, and natural areas 15.2%
commercial 3.9%
low-rise apartments (residential or mixed-use) 4.1%
high-rise apartments (residential or mixed-use) 1.9%

See Jens' post for the full charts and comparisons to other Metro Vancouver municipalities.

References