Preservation laws often ban additions to designated buildings, which can be counterproductive, says Stephen Smith, who argues that incremental add-ons can protect buildings from future redevelopment driven by market forces.
Smith focuses his attention on New York, which he calls a "hotbed of addition-induced turmoil.":
"The enormous pent-up demand occasionally surges through the legal barriers, with unapproved additions and penthouses popping up throughout the city, and developers sometimes being forced to tear them down."
"A few months ago a building in Dumbo lost six stories that were almost five years old because the owners never got a zoning variance to add residential space to the commercially-zoned property. Developers like Ramy Issac and Ben Shaoul have become infamous as "tenement toppers," and while their tactics are sometimes unsavory and illegal, the fact that anyone is willing to take such a risk is indicative of the extraordinary unmet demand for density in the city."
Thanks to Stephen Smith
FULL STORY: Development as Preservation

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.

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

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?

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.

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.

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.
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.
Central Transportation Planning Staff/Boston Region MPO
Heyer Gruel & Associates PA
Institute for Housing and Urban Development Studies (IHS)
City of Grandview
Harvard GSD Executive Education
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions