A New Form-Based Zoning Code and the 'Conflicted Soul' of the Suburbs

The new form-based zoning code under consideration in the affluent Philadelphia suburb of Lower Merion "has something to teach Philadelphia and other big cities about how to organize density smartly," according to Inga Saffron.

2 minute read

September 9, 2019, 9:00 AM PDT

By James Brasuell @CasualBrasuell


Presidential Blvd Road Diet

A bike lane and a road diet on Presidential Boulevard in Lower Merion, Pennsylvania. | Montgomery County Planning Commission / Flickr

Inga Saffron writes of the new zoning code in the Philadelphia suburb of Lower Merion as an example of the "conflicted soul of the suburbs"—that is, the conflict between a contemporary push for more inclusionary land use regulations with the status quo of politics ruled by residential property owners.

Lower Merion's new zoning code will face a final vote by the Board of Commissioners on September 18. "The rules," writes Saffron, "enshrine some of the most cherished — and exclusionary — features of 1950s suburbia. Big lots. Big houses. Big requirements for off-street parking. Affordable housing and sustainable construction barely rate a mention."

That seems like a full expression of the suburban status quo, but there is one visible sign of reform more in keeping with more recent planning trends: "Lower Merion is also going further than most of its peers to create pockets of density near transit and encourage walkability throughout the township," according to Saffron. Accessory Dwelling Units will also be legalized by the new code. Saffron notes that Philadelphia has only just begun to tackle that issue.

Lower Merio hired Elizabeth Plater-Zyberk, co-founder of the Congress for New Urbanism and Lower Merion native, to write the new zoning code. It follows, then, that Lower Merion's new code is of the form-based variety. Saffron explains:

Because Lower Merion was built around the Pennsylvania Railroad’s “Main Line,” it has always been a unique urban-suburban hybrid, with dense, transit-oriented villages like Ardmore and Bryn Mawr, and rolling country estates farther out in Gladwyne and Penn Valley that are totally car-dependent. The form-based code treats the two halves as different places, preserving the storybook version of the Main Line while still allowing density near the train stations.

The article includes insight from Plater-Zyberk about the city and the new code.

Thursday, September 5, 2019 in The Philadelphia Inquirer

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

Get top-rated, practical training

Close-up of "Apartment for rent" sign in red text on black background in front of blurred building

Trump Administration Could Effectively End Housing Voucher Program

Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

April 21, 2025 - Housing Wire

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.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

1984 Olympics

LA to Replace Inglewood Light Rail Project With Bus Shuttles

LA Metro says the change is in response to community engagement and that the new design will be ready before the 2028 Olympic Games.

34 minutes ago - Newsweek

Close-up on woman in white and blue striped knee-length dress standing next to mint green cruiser bike resting against low wrought iron fence in front of green lawn.

Paris Voters Approve More Car-Free Streets

Paris Mayor Anne Hidalgo says the city will develop a plan to close 500 streets to car traffic and add new bike and pedestrian infrastructure after a referendum on the proposal passed with 66 percent of the vote.

1 hour ago - domus

Close-up of man in manually operated wheelchair waiting at urban crosswalk.

Making Mobility More Inclusive

A new study highlights the challenges people with disabilities continue to face in navigating urban spaces.

2 hours ago - Greater Good Magazine

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.