6 Zoning Keys for Effective Missing Middle Housing

The inventor of the term missing middle housing has advice on writing zoning codes that effectively deliver on the potential of the tool.

1 minute read

March 23, 2020, 11:00 AM PDT

By James Brasuell @CasualBrasuell


Accessory Dwelling Unit

Sightline Institute: Missing Middle Homes Photo Library Follow / Flickr

According to a February article by Dan Parolek, recent legislative efforts to legalize missing middle housing (e.g., the Minneapolis 2040 Comprehensive Plan and Oregon’s HB 2001) illustrate how “Missing Middle Housing can go a long way toward meeting housing needs in a variety of places.”

Parolek, credited with coining the term missing middle housing, writes here to offer a few tips to ensure that zoning changes designed to make new space fo missing middle housing will achieve the desired goals of increasing the number of housing units, addressing the high cost of housing, and not letting that new density also mean huge new buildings.

Parolek lists six tips in total, listed here, but also with a lot more detail in the source article.

  1. Regulate maximum building envelope/form & scale rather than number of units/density
  2. Carefully regulate building width and depth
  3. Be careful about allowed height
  4. Do not allow townhouses or single-family detached homes in which the ground floor is mostly parking
  5. Some single-family contexts are better than others for Missing Middle Housing 
  6. Communication and framing tips

Tuesday, February 25, 2020 in CNU Public Square

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

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

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.

July 9, 2025 - Diana Ionescu

Map of Haussmann's redesign of Paris in the 1850s through 1870s under Napoleon III.

In Urban Planning, AI Prompting Could be the New Design Thinking

Creativity has long been key to great urban design. What if we see AI as our new creative partner?

June 30, 2025 - Tom Sanchez

View of dense apartment buildings on Seattle waterfront with high-rise buildings in background.

King County Supportive Housing Program Offers Hope for Unhoused Residents

The county is taking a ‘Housing First’ approach that prioritizes getting people into housing, then offering wraparound supportive services.

5 hours ago - Real Change

Aerial view of suburban housing near Las Vegas, Nevada.

Researchers Use AI to Get Clearer Picture of US Housing

Analysts are using artificial intelligence to supercharge their research by allowing them to comb through data faster. Though these AI tools can be error prone, they save time and housing researchers are optimistic about the future.

6 hours ago - Shelterforce Magazine

Green bike share bikes parked in a row on a commercial street with outdoor dining and greenery.

Making Shared Micromobility More Inclusive

Cities and shared mobility system operators can do more to include people with disabilities in planning and operations, per a new report.

7 hours ago - Cities Today