Green Roof Tax Incentive Legislation Introduced in the Senate

ASLA Government Affairs

Senator Maria Cantwell (WA) introduced the Clean Energy Stimulus and Investment Assurance Act of 2009 (S.320), legislation geared toward creating high-wage green-collar jobs and revitalizing the economy through clean energy investments. ASLA worked with Senator Cantwell's office to ensure that a section of the bill was dedicated to green roof tax incentives.

Section 506 of the bill gives a 30% tax credit for qualified green roof property expenditures on residential and commercial buildings. The language puts the cap at $5000 on residential buildings, and no cap for commercial buildings. The bill outlines specific, ASLA-recommended language, defining ‘qualified green roofs' to mean any green roof at least 50 percent of which is a vegetated green roof system. The credit applies to any retrofit or new construction green roof.

In addition to the substantial input ASLA received from its expert green roof practitioner members, ASLA also received technical support from the non-profit organization Green Roofs for Healthy Cities.

The legislation was referred to the Senate Finance Committee.


Kevin Fry
Director, PR and

JR Taylor
PR Coordinator