Carbon, Climate Change and City Building (Elizabeth Dunn) - ULI Fall Meeting 102611
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Liz Dunn discusses how older existing buildings can provide climate solutions through retrofitting and reuse. She notes that many older buildings use less energy than assumed, and that reusing existing buildings offers immediate climate benefits over new construction. However, information gaps exist, and new approaches are needed to unlock the potential of smaller older commercial buildings. Dunn advocates for outcome-based energy codes, demonstration projects, and policies to encourage district-focused, locally-owned development as part of leveraging existing buildings for sustainability.
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Carbon, Climate Change and City Building (Elizabeth Dunn) - ULI Fall Meeting 102611
- 1. Old Buildings Thriving Neighborhoods New Climate Solutions Liz Dunn ULI Fall 2011 Annual Conference
- 2. Leveraging our most sustainable assets
- 6. Old buildings, new approaches, new partners
- 7. Many older buildings perform (or could perform) better than we think Energy Use in Commercial Buildings 120 100 80 kBTU per sf 60 40 20 0 Before 1920 - 1945 1946 - 1959 1960- 1969 1970 -1979 1980 - 1989 1990 - 1999 2000 - 2003 1920 Year of Construction Source: U.S. Energy Information Administration, 2003 Commercial Building Energy Consumption Survey
- 8. Information will help level the playing field Source: Cliff Majersik, Institute for Market Transformation
- 9. NTHP LIFE CYCLE ASSESSMENT STUDY Distribution Use End of life Manufacture Extraction Transformation
- 10. The environmental value of reuse Reuse of average performing buildings offers immediate climate change reductions over efficient, new construction. Climate change (kg CO2-eq/ft2 floor space/year) 1.60E+02 1.40E+02 Rehabilitation & retrofit: Base case 1.20E+02 New construction: Advanced 1.00E+02 8.00E+01 6.00E+01 4.00E+01 2.00E+01 0.00E+00 0 10 20 30 40 50 60 70 80 90 100 110 Building lifetime (years) Commercial Building, Chicago
- 11. The ‘new economy’ is happening in old neighborhoods
- 12. Older fine-grained neighborhoods = locally owned business
- 13. The economic multiplier effect of locally- owned business is almost 4x that of chains www.civiceconimics.com
- 15. The future of office is changing
- 16. We need to measure density differently
- 17. New solutions are needed for smaller, older buildings 73% of our existing commercial buildings are less than 10,000 square feet 95% of them are less than 50,000 square feet – representing half of all commercial floor space US Energy Information Administration, 2003 Buildings in Denver’s Historic District. Photo by Wally Gobetz
- 18. OUTCOME BASED ENERGY CODES Objective: To create an alternate, more flexible, building energy efficiency code framework for existing and historic buildings
- 19. DEMONSTRATION PROJECTS Supply Laundry Building, Seattle
- 20. URBAN GRAIN AND PEDESTRIAN ACTIVITY Measuring Urban Grain in Older Neighborhoods Metrics and Measures
- 21. Cover?
- 22. Urban grain and pedestrian activity Measuring Urban Grain in Older Neighborhoods Metrics and Measures
- 24. CAPITOL HILL BUILDINGS AND ENERGY INVENTORY Broadway Light Rail Station TOD Site
- 25. New land use policy to encourage district-focused ‘locavore’ investment in new development models