Green Roof Benefit Cost Model Inputs
You can generate a crude Green Roof Cost-Benefit Analysis for New York City by filling in the form below. The form offers some guidance for reasonable inputs. Please be advised that this is a crude Beta Model and does not provide a meaningful estimate of the costs and benefits of Green Roofs at this time.

After filling it out you can see the results on our website by clicking http://tinyurl.com/zc9xcem or on Google Sheets at http://tinyurl.com/z2bvdok. Your responses will change the middle (most likely) scenario.

A description of the model is available on pages 41-52 (51-62 of the PDF) at
https://www.nps.gov/tps/sustainability/greendocs/rosenzweig-sm.pdf

We will be refining the model considerably in months to come.

Social Discount Rate
Green Roof Life
Non Green Roof Life in years
Green Roof Cost/Sq. Ft. (typical range $20-$40)
Your answer
Non Green Roof Cost/Sq. Ft. (typical range $7-$18)
Your answer
Green Roof Maintenance Costs/Sq. Ft./year) typically $.20-$.75
Your answer
Non Green Roof Maintenance Costs/Sq. Ft./year) typically $.07-$.25
Your answer
Cooling Costs $ Per Square Foot
Stormwater Reduction Percentage
email (not required)
Your answer
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