Urban Planning and Design

421-a Maps
Numbers Behind 421-a and Affordable Housing Revealed

In total, the city forfeited more than $1.1 billion in tax revenue in 2014 alone through the 421-a program, 60% of which subsidized buildings in Manhattan
Get the details»»

New timeline depicts major changes coming to Manhattan’s West Side

See the timeline »»
Become part of the Penn 2023 campaign »»


Tara Kelly
Director, Preservation and Design

Positions & Testimony

The MAS staff members testify regularly on a range of issues before city commissions and committees, and in other forums.
See testimony »»

Other Projects

East Midtown

Connect with MAS

Facebook Facebook Twitter Twitter Videos on YouTube Videos