Portland to Consider New Residential Infill Regulations

The city of Portland's new residential infill ordinance would reduce the number of 1:1 demolitions—which often convert older, affordable homes into expensive McMansions.

1 minute read

October 11, 2017, 9:00 AM PDT

By James Brasuell @CasualBrasuell


Portland

JPL Designs / Shutterstock

Portland is ready to pick up its consideration of an infill development ordinance meant to curb the development of McMansions and spur the development of missing middle housing.

As Michael Andersen reports for Portland for Everyone, the idea behind the ordinance is that "amid a housing shortage, it’s stupid that so many construction sites are spending half a million dollars to replace one house with one house."

The Portland City Council approved the legislation in concept in October 2016, but now the ordinance is back in draft form and ready for finishing touches.

Andersen describes the two big ideas at the core of the new legislation:

  1. The maximum size of new buildings in lower-density residential districts would drop sharply, reducing the total number of demolitions.
  2. In much of the city, the new, smaller structures that are built could legally be duplexes, triplexes and clustered cottages, increasing the total number of homes — especially small ones.

Andersen places the new legislation in context of the city's skyrocketing housing costs—almost every freestanding home in Portland's pre-1940 street grid now costs more than $400,000.

Tuesday, October 10, 2017 in Portland for Everyone

Young Professional

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 and Environmental 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 and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

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

2 hours ago - Zachary Whalen

Overlapping highways

The state-sanctioned urbicide of Austin

People don’t kill cities. Freeways do.

September 8, 2026 - Benjamin Schneider

The Hoover Dam blocking the Colorado River. The river's water level is noticeably low. The cliffs surrounding the blue water are brown and jagged.

US to reduce Colorado River water deliveries to Mexico

A new Colorado Treaty amendment reduces Mexico’s Colorado River water allocation by 250,000 acre feet.

September 11, 2026 - The Arizona Republic

A brick building with a circular sign with the Airbnb logo hanging off of it.

Airbnb launches $250 million 'last-dollar financing' housing accelerator, makes first investment in Austin

The company will put $6.4 million towards affordable housing development in Texas’ capital.

31 minutes ago - Smart Cities Dive

One side of the image shows a Chicago bus stop without a bench, the second image shows the bus stop with a yellow and blue bench.

Guerilla urbanists are building DIY bus stop benches in Chicago

A before-and-after of one of the bus stops with a new bench. The new benches are not officially sanctioned or permitted, but the residents who placed them hope they will be the start of a network of DIY benches across the city.

1 hour ago - Block Club Chicago

NYC Mayor Zohran Mandami speaks behind a blue podium.

Mamdani overhauls NYC's Vision Zero plan with 100 new policy goals

The overhaul aims to reduce traffic deaths and make streets safer for pedestrians, cyclists and drivers through lower speed limits, new safety infrastructure and more.

2 hours ago - ABC 7 Eyewitness News

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.