Seattle Is Teardown Town

Mansionization, that conspicuous manifestation of the demand for larger homes, is alive and well in Seattle.

1 minute read

December 3, 2015, 12:00 PM PST

By James Brasuell @CasualBrasuell


Demolition

Adam Foster / FLickr

Gene Balk reports on the rate at which Seattle landowners are tearing down homes and replacing them with newer, much larger models.

According to data from the King County assessor " from 2012 through 2014, more than 1,500 houses were torn down and replaced with something larger — typically at least twice the size." Moreover, 450 of those homes were replaced with a new home at three times the size of the original home.

Balk credits the wave of mansionization to a lack of "unaffordable" housing in the city. That is, "[i]n our increasingly affluent region, there’s growing demand for spacious, amenity-laden new houses, particularly in prime locations on the Eastside and in parts of Seattle. But the existing housing stock in these established neighborhoods is often characteristic of a more modest era — small prewar cottages and midcentury ramblers."

The article includes some heat maps to show where the teardowns are occurring most frequently around town as well as a samples of comparison photos to show how the houses, and blocks, looked before and after renovations. 

Friday, November 27, 2015 in The Seattle Times

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

Use Code 25for25 at checkout for 25% off an annual plan!

Interior of Place Versailles mall in Montreal, Canada.

Montreal Mall to Become 6,000 Housing Units

Place Versailles will be transformed into a mixed-use complex over the next 25 years.

May 22, 2025 - CBC

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.

May 28, 2025 - Diana Ionescu

AI-generated image of high-speed rail trail in elevated track in green hilly farmland.

Four Reasons Urban Planners Can’t Ignore AI

It’s no longer a question of whether AI will shape planning, but how. That how is up to us.

May 28, 2025 - Tom Sanchez

Aerial view of Bend, Oregon.

Bend, Deschutes County Move to Restrict Major Homeless Encampment

City and county officials are closing off portions of an area known as Juniper Ridge where many unhoused residents find shelter, hoping to direct people to housing and supportive services.

5 hours ago - The Bulletin

Metro rail station in Mariachi Plaza with colorful glass pavilion in Boyle Heights, Los Angeles, California.

High Housing Costs Driving Down Transit Ridership in LA

When neighborhoods gentrify and displace lower-income residents, transit ridership suffers, new research shows.

6 hours ago - CALmatters

Des Moines, Iowa skyline viewed from a plaza with two flags on either side at dusk.

Iowa Legalizes Accessory Dwelling Units

A new law will allow property owners to build ADUs on single-family lots starting on July 1.

7 hours ago - Smart Cities Dive

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.

Please login or create a new account to proceed. You will need a Planetizen account to post a job, news, or an announcement.