Invisible Density

The Canadians call it "laneway housing", and in the U.S. they're often dubbed "granny units". These smaller homes in underused garage or alley locations are creating new ways to add density to areas without changing community character.

1 minute read

September 8, 2011, 1:00 PM PDT

By Tim Halbur


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."

Thursday, September 8, 2011 in SightlineDaily

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

June 25, 2025 - Diana Ionescu

Map of Western U.S. indicating public lands that would be for sale under a Senate plan in yellow and green.

Map: Where Senate Republicans Want to Sell Your Public Lands

For public land advocates, the Senate Republicans’ proposal to sell millions of acres of public land in the West is “the biggest fight of their careers.”

June 19, 2025 - Outdoor Life

Person wearing mask walking through temporary outdoor dining setup lined with bistro lights at dusk in New York City.

Restaurant Patios Were a Pandemic Win — Why Were They so Hard to Keep?

Social distancing requirements and changes in travel patterns prompted cities to pilot new uses for street and sidewalk space. Then it got complicated.

June 19, 2025 - Diana Ionescu

Close-up of full beer glass with purple train-themed design sitting on bar between two frosty tall cans.

Platform Pilsner: Vancouver Transit Agency Releases... a Beer?

TransLink will receive a portion of every sale of the four-pack.

4 hours ago - Cities Today

Vintage red Toronto streetcar passing in front of Rogers Arena in Toronto, Canada.

Toronto Weighs Cheaper Transit, Parking Hikes for Major Events

Special event rates would take effect during large festivals, sports games and concerts to ‘discourage driving, manage congestion and free up space for transit.”

5 hours ago - blogTO

Map of Berlin with ring roads in green and red.

Berlin to Consider Car-Free Zone Larger Than Manhattan

The area bound by the 22-mile Ringbahn would still allow 12 uses of a private automobile per year per person, and several other exemptions.

6 hours ago - Streetsblog USA

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.