What is the principal idea behind form-based code in urban planning?

• A. Focuses on the physical form and design of neighborhoods rather than solely on land use; aims for predictable urban form and walkability.
• B. Focuses on maximizing land-use efficiency for redevelopment.
• C. Emphasizes height and density along roads with no regard to streets.
• D. Eliminates zoning altogether.

Answer: (D)

Form-based code centers on shaping the built environment through rules about physical form and the public realm, not just on what uses are allowed. It aims for a predictable, human-scale urban fabric by regulating elements like street layout, block size, building placement and massing, build-to lines, setbacks, entrances, and street-facing façades. The idea is that when the form of streets, blocks, and buildings is regulated, the city reads as coherent and walkable, even as different land uses coexist.

That’s why the option describing a focus on the physical form and design of neighborhoods to achieve predictable form and walkability is the best fit. It captures the core aim of form-based coding: prioritize how the city looks and feels in the public realm, not only what activities are allowed.

The idea of maximizing land-use efficiency is more about traditional zoning’s emphasis on density and land-use categories, rather than the primary concern of form-based codes. Emphasizing height and density along roads with no regard to streets contradicts form-based thinking, since streets and their relationship to buildings are central to form-based codes. Finally, eliminating zoning altogether isn’t accurate—form-based codes operate within a zoning framework but shift emphasis toward form rather than only land-use separation.