Following a similar ordinance signed into law by Mayor Ed Lee last July that dealt with developments that are 100 percent affordable, the new housing density ordinance apples to market-rate developments that have 30 percent affordability.

The housing density ordinance approved by the San Francisco Board of Supervisor on Tuesday was not the first attempt at increasing building heights in exchanging for additional affordable units. It dates back to a proposal by Mayor Ed Lee and Supervisor Katy Tang to craft a density bonus policy to spur affordable housing, proposed to the Board of Supervisors in September 2015.
The Affordable Housing Bonus Program achieved its first success when Lee signed that 100 percent affordable housing bonus ordinance on July 29, 2016.
The resolution by Tang and Supervisor Ahsha Safai "allows developers to build taller residential structures in exchange for making 30 percent of the units affordable," reports Rachel Swan for the San Francisco Chronicle.
Known as HOME–SF, it passed 10-1 on May 23, and is viewed as "a win for developers and pro-growth advocates who say the only way to make San Francisco affordable is to keep building." Tang attributed the success in part to middle class families seeking housing in the city, who saw recent gains when housing for teachers was approved this month.
Hat tip MTC-ABAG Library.
FULL STORY: SF supervisors OK taller buildings in exchange for affordable housing

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

San Francisco's School District Spent $105M To Build Affordable Housing for Teachers — And That's Just the Beginning
SFUSD joins a growing list of school districts using their land holdings to address housing affordability challenges faced by their own employees.

The Tiny, Adorable $7,000 Car Turning Japan Onto EVs
The single seat Mibot charges from a regular plug as quickly as an iPad, and is about half the price of an average EV.

Seattle's Plan for Adopting Driverless Cars
Equity, safety, accessibility and affordability are front of mind as the city prepares for robotaxis and other autonomous vehicles.

As Trump Phases Out FEMA, Is It Time to Flee the Floodplains?
With less federal funding available for disaster relief efforts, the need to relocate at-risk communities is more urgent than ever.

With Protected Lanes, 460% More People Commute by Bike
For those needing more ammo, more data proving what we already knew is here.
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.
Smith Gee Studio
City of Charlotte
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
US High Speed Rail Association
City of Camden Redevelopment Agency
Municipality of Princeton (NJ)