Before installing a green roof, consider the initial construction investment, maintenance cost, return on investment, and financing options, including grants and tax incentives provided by NYC and other entities.
Green Roof Costs & Savings Common Questions
What is the average cost to retrofit a green roof?
The average cost to install a green roof ranges from $15 to $35/sqft for an extensive green roof and $20 to $35/sqft for more intensive green roofs, depending on the size of the building. In addition, a structural assessment usually costs $1,000 to $1,500 for smaller roofs and up to $5,000 for large roofs. If the green roof is integrated into the design in the beginning of the construction, the costs per square foot decreases.
How much does it cost to maintain a green roof?
The average maintenance cost for an extensive green roof ranges from $.75 to $2/sqft, while that of intensive green roofs ranges from $1.25 to $2/sqft. Maintaining a roof with landscape design will be more expensive. Annual maintenance of green roofs costs 21 cents to 31 cents more per square foot a year than maintenance of a black roof. Overall green roof maintenance costs decrease after the first two years.
Do green roofs save energy costs?
By creating a layer of insulation, green roofs reduce extreme heat and lower energy use for building owners. The temperature of a green roof can be 30 to 40°F lower than that of a black roof. This cuts heating and cooling expenses, while prolonging the service life of heating and ventilation systems. Building owners can expect overall building savings of .5 percent in winter and 6 percent in summer.
Will green roofs extend roof longevity?
A green roof doubles the life expectancy of the roof: a standard roof lasts an average of 17 years and a roof with a green roof an average of 34 years.
Do green roofs increase property value?
What is the overall Return on Investment (ROI) for a green roof?
Green Infrastructure Grant Common Questions
What is the DEP Green Infrastructure Grant?
The Green Infrastructure Grant has helped fund over 30 green roofs since its inception in 2011. This grant program, funded by the New York City Department of Environmental Protection (DEP), is an incentive for private property owners to retrofit their NYC rooftops with green roofs.
What are the Green Infrastructure Grant eligibility requirements?
What will the grant cover?
What are the steps to submit an application?
What else should I know before considering an application?
Property owners must execute a funding agreement with the DEP. Included in the funding agreement is a Declaration of Restrictive Covenant, which requires the property owner to commit to maintaining the green roof for at least 20 years. The funding agreement and the Declaration are available on the DEP’s website and should be reviewed by the property owner and their legal counsel prior to submitting an application.
Green Roof Tax AbatemenT
A New York City property tax abatement is available for property owners who install a green roof on their buildings. The current program runs through June 30, 2024, and offers $5.23 per square foot of green roof installed in most parts of the city and $15 per square foot in Priority Community Districts.
Priority Community Districts were established by the City based on need for stormwater management and urban heat island reduction benefits that green roofs can offer. The potential for stormwater management benefits was based on the percent of land area within a Combined Sewer Overflow Priority Area designated by the NYC Department of Environmental Protection. The potential for urban heat island reduction was based on the Heat Vulnerability Index developed by the NYC Department of Health and Mental Hygiene, characterizing risk of heat-related mortality based on a suite of socioeconomic and environmental factors.
Use the map below to see what tax abatement rate applies to your community district, and click on the magnifying glass to enter a specific address.
Additional Green Roof Funding
Are there funding options outside of NYC?
The Hudson River Valley Greenway Grant will provide funding for green infrastructure projects to residents within eligible Hudson Valley communities.
Are there community-specific grants?
Are there grant matching programs?
The Climate Smart Communities Grant is a 50/50 matching grant program for municipalities pursuing projects that support climate change adaptation and the local reduction of greenhouse gas emissions.
Does the Water Quality Improvement Project Grant cover green roofs?
Yes, the Water Quality Improvement Project (WQIP) is a statewide reimbursement grant program that funds projects that directly address documented water quality impairments or protect a drinking water source.
Green roof financing resources
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