Green Roofs

Green roof at Rhode Island Row – 2300 Washington Place, NE  WDC.

Green roofs play an essential role in protecting, preserving and restoring our watershed. Covered with soil media and plants, green roofs provide tremendous benefits for our communities, neighborhoods and individual property owners. Every municipality in the watershed is encouraging green roofs and AWS is here to help you learn more and get them installed. 

Green Roofs Benefits

  • Improved stormwater management for buildings – through retention and purification
  • Reductions to the heat island effect
  • Increased health - for people, plants and animals
  • Energy conservation and noise reduction year-round
  • Reduced demand on the municipal sewer systems and potential reductions in fees
  • Extension of roof life
  • Reductions in air pollution and greenhouse gas emissions

Green Roof at 130 M St. NE

Green Roof Tools

Case Studies

Click here (PDF) to learn about our 2009-2011 green roof projects with the World Wildlife Fund, American Chemical Society, Capitol Plaza One and American University.

Click here (PDF) to see a variety of roofs funded in 2011-2012. Projects include Sibley Memorial Hospital and a variety of residential and commercial green roofs throughout the District.

Click here (PDF) to see information on five of the most recent green roofs we’ve helped fund in 2012-2013. Projects include Rhode Island Row, Catholic University’s Aquinas Hall, a residential green roof, the French Embassy and Canal Park.

These and other efforts have resulted in the installation of numerous green roof projects across the District. We have identified a small group of Showcase Green Roof Projects [PDF] – each of which provides practical green roof data and contact information for site visits or further investigations.

Apply Today for the District's 2014-2015 RiverSmart Rooftops Program

We are currently accepting applications for the District Department of the Environment's RiverSmart Rooftops program which provides rebates for the installation of green roofs within the District of Columbia. Rebates of up to $15/square foot are available to eligible projects based on roof size and property location.

To be eligible for this new rebate amount, projects must register after November 1, 2014. Rebates are available for new green roofs on existing buildings of any size. 

*For renovations larger than 5,000 square feet or new construction green roof applications must be submitted to Anacostia Watershed Society before applying for building permits.

Please review the “Application & Rebate Process” (PDF) and complete the Registration Form below. If your roof is under 2,500 ft2, you can also apply for a structural engineer rebate.

Once we receive and approve your completed registration form, we will send an Application. Projects will be placed in the rebate funding queue only after AWS receives a completed Application Form with all supporting documents.

The RiverSmart Rewards Program and Stormwater Retention Credit trading program may increase your savings for installing your green roof. DDOE RiverSmart Rewards and Clean Rivers IAC Incentive Programs

Interactive Targeted Subwatershed Map

Click here to view an interactive map of targeted subwatersheds

Step 1: Learn More about the Program and Find a Greenroof Contractor
 Green Roof Rebate Program Flyer – Overview of the program and Green Roof Benefits.

Application and Rebate Process- Download this for more detailed information about our program.

Structural Engineering Rebate for Buildings under 2,500 sq. ft. – Includes a description of rebate. A list of potential engineers can be found on the Green Roof Contractors pdf below. 

 Green Roof Contractors – Download this for a preliminary list of contractors in the DC area. You can use any licensed contractor you want – whether they are on this list or not. 

Step 2: Fill out and submit registration form
Registration Form – Download and complete this form to begin the application process. 

Step 3: Recieve application form from us and send back completed
Application – Once your registration form is approved, the second step in the rebate process is to complete this form. 

Step 4: Apply for a Discount on your Stormwater Fee

DDOE RiverSmart Rewards and Clean Rivers IAC Incentive Programs

Additional information about the District Department of the Environment’s (DDOE’s) Green Roof Rebate Program is available at DDOE’s Green Roof Website.

Green Roof on Residential Garage in SE DC






Montgomery County

Property owners in Montgomery County can receive technical assistance and funding for Green Roofs and other Landscape Improvements through the Rainscapes Program. AWS is also available to help. Learn More

Prince George’s County

Prince George's County Council unanimously passed bill (CB-45-13) that established a Clean Water Act Fee in 2013 to fund projects that reduce polluted water run-off.  
Stormwater is one of the county's biggest challenges as it causes flooding, property damage and polluted streams. For more information about support for Green Roofs and other LID practices through their RainCheck Program, click here.

If you have questions please contact us by calling 301-699-6204 ext.114 or via e-mail at





We offer a variety of volunteer opportunities that will engage your hands, your head, and your heart in the protection and restoration of our local lands and water.

Upcoming Events

Watershed Wednesday
March 11

More info