What is a density bonus in urban planning?

A density bonus in urban planning is a regulatory incentive that allows developers to build more units or more floor area than normally permitted in exchange for providing a public benefit such as affordable housing, public open space, heritage conservation, green building features, or transit-oriented design.

How a Density Bonus Works

• Base zoning allows, say, 100 residential units on a plot
• Developer agrees to include 15 affordable units in the project
• Government grants a density bonus of 20%
• Developer can now build 120 units on the same plot
• The extra 5 market-rate units compensate for the cost of affordable units

Global Examples Influencing Indian Policy

• California Density Bonus Law (USA) : industry benchmark for affordable housing incentives
• Singapore Urban Redevelopment Authority : density bonuses for green and heritage buildings
• UK Section 106 Agreements : planning obligations exchanged for density permissions

Density bonuses are an elegant market-based tool for achieving public policy goals affordable housing, sustainability, heritage preservation without government expenditure. In India's high land-cost cities, well-designed density bonus frameworks can be the difference between affordable housing programmes that remain on paper and those that actually deliver homes.