Green Roofs - Living Architecture Monitor - Fall 2011 - (Page 13)
FIGURE 1: NET PRESENT VALUE OF VARIOUS GREEN ROOF BENEFITS
$500.000 $400.000 NET PERCENT VALUE $300.000 $200.000 $100.000 $0 ($100.000) ($200.000) ($300.000)
INSTALLATION, REPLACEMENT & MAINTENANCE STORMWATER ENERGY CO2 EMISSIONS, SEQUESTRATION & ABSORPTION INITIAL REAL ESTATE EFFECT (VALUE, RENT ABSORPTION & VACANCY) COMMUNITY BENEFITS (BIODIVERSITY, AIR QUALITY, HEAT ISLAND, ETC.)
technology should all come down while stormwater fees and energy prices are predicted to rise more than inflation. As a result, green roofs currently look to be a net neutral investment when looking at only the basics (installation, maintenance, replacement, stormwater & energy). However, by broadening the scope of financial return (i.e. carbon, real estate impacts, community benefits, productivity), the financial viability of green roofs as compared to conventional black roofs is bound to become increasingly attractive. D
Adam Friedberg, PE, LEED AP, is senior sustainability consultant for Arup in New York, New York. Jordan O'Brien, LEED AP, is senior management consultant, Sustainability & Real Estate, for Arup in San Francisco. GRHC's GreenSave Calculator is a life cycle cost-benefit tool available to members online.
Table of Contents for the Digital Edition of Green Roofs - Living Architecture Monitor - Fall 2011
Green Roofs - Living Architecture Monitor - Fall 2011
Contents
From the Founder
Strata
On the Roof With…
Research
Marketing
Policy: The Game Changer
Policy: Toronto’s Green Roof by-Law
Policy: Energy Code Break-Through
Tools
GRHC: Update
GRHC: Welcome New Members
On Spec
Green Roofs - Living Architecture Monitor - Fall 2011
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