Additions

Philadelphia Rowhouse Owners Embrace the 'Overbuild'
Quarters can be cramped for growing families in Philadelphia's many two-story rowhouses. Rather than decamp to the suburbs, more and more homeowners are simply adding a third story, known as an "overbuild."
D.C. Zoning Code Change Will Further Limit Rear Additions
In a move that will restrict the building envelope of residential properties, the Washington, D.C. Zoning Commission approved limitations to the construction of rear additions.
Urban3
HUD's Office of Policy Development and Research
Washington University
Mpact: Mobility, Community, Possibility
Lassen County Planning and Building Services
City of San Carlos
National Capital Planning Commission
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.