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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.

Public Comment Process for Guidebook

DOEE is submitting for public review and comment the Draft Revised Green Area Ratio (GAR) Guidebook.  The guidebook provides clarification for the development community and District residents to comply with the regulation.  Additional forms and documents that support administration of the regulation are provided for reference. The public is invited to present its comments in written format and at a public hearing on proposed revisions to the Draft revisions.

  • Summary of Revisions (PDF attached below)
  • Final Draft of Guidebook (PDF attached below)
  • Markup Draft of Guidebook (PDF attached below)
  • GAR Plant List (PDF attached below)
  • Public Hearing – CANCELLED

The Draft revisions are presented within the guidebook as strikethrough deletions or underline additions.  A summary of revisions form identifies all major changes to the guidebook. Read the original Preliminary Draft Green Area Ratio Guidebook.

The deadline for comments is 10/10/2016 at 5:00 P.M. Persons may submit written comments by email, with a subject line of “GAR Guidebook” to the attention of Markku McGlynn at markku.mcglynn@dc.gov. Comments clearly marked “GAR Guidebook” may also be hand delivered or mailed to the Department’s offices at 1200 1st Street NE, 5th Floor. All comments should be received no later than the conclusion of business on Monday, October 10, 2016. The Department will consider all comments received in its final decision.

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.

For additional information, please contact Margie Noonan at margaret.noonan@dc.gov

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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