Designing Homes for the In-between Spaces

"Leftover lots" are the object of one Philadelphia-based architecture firm's fascination.

1 minute read

June 8, 2019, 5:00 AM PDT

By James Brasuell @CasualBrasuell


Philadelphia Rowhouses

Mike Linksvayer / Flickr

Jake Blumgart details the work of the architecture firm ISA, which designs "a new generation of uniquely Philadelphian homes […] as architects confront a dwindling supply of available land in growing neighborhoods and seek ways to squeeze housing into what architect Brian Phillips, founding principal of the firm ISA, calls the 'leftover lots'  — the alleys, the side yards, and yes, the courtyards."

ISA is behind an exhibition that debuted yesterday to celebrate rowhouses, which Blumgart calls "the city’s most ubiquitous housing typology." In May, ISA won a 2019 AIA Housing Award for the Tiny Tower, a "slender new take on the "old old Philly row."

"ISA’s tower stands on a narrow back street of Brewerytown, a North Philadelphia neighborhood that’s experienced extensive reinvestment in recent years. Rowhomes line the west end of the block, but vacant lots surround the ISA lot, on the southeastern portion of the block. The roadway is so tight that cars must ease down it, creating a nice quiet block sheltered from bustling Girard Avenue to the immediate north."

Thursday, June 6, 2019 in PlanPhilly

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

Washington

Washington State’s Parking Reform Law Could Unlock ‘Countless’ Acres for New Housing

A law that limits how much parking cities can require for residential amd commercial developments could lead to a construction boom.

May 1 - Streetsblog USA

Bluebird sitting on branch of green bush.

Wildlife Rebounds After the Eaton Fire

Following the devastation of the Eaton Fire, the return of wildlife and the regrowth of native plants are offering powerful signs of resilience and renewal.

May 1 - AP News

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.

May 1 - Newsweek

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.