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Green Area Ratio Overview

GAR overview
What is GAR?

The Green Area Ratio is an environmental sustainability zoning regulation that sets standards for landscape and site design to help reduce stormwater runoff, improve air quality, and keep the city cooler.

Submit Green Area Ratio Plan Information Online

Use the Stormwater Database to submit compliance calculations and supplemental information to DOEE as part of its Green Area Ratio Plan review process.

Submit GAR plans for new buildings during the Foundation-to-grade (FD) or Civil (BCIV) permit to allow coordination with stormwater plan review. Submit GAR plans for additions or interior renovations during the Building Permit (B).

For additional information, please contact Markku McGlynn at or at (202) 535-2242.

For questions regarding the development of the GAR regulation, refer to the Office of Planning.
GAR graphic



Cooler Temperatures  |  Improved Air Quality  |  Reduced Stormwater

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