Sustainable Business Seminar June08


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presented by Jessica Winter of Sustainable Wanaka

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  • Sustainable Business Seminar June08

    1. 1. Measuring the value of sustainable buildings Jessica Winter – Green Building Consultancy
    2. 2. <ul><li>Globally, buildings consume : </li></ul><ul><li>40% of raw resources </li></ul><ul><li>16% of fresh water </li></ul><ul><li>Up to 40% of energy </li></ul><ul><li>55% of timber harvested </li></ul><ul><li>And buildings produce : </li></ul><ul><li>40% - solid waste to landfill </li></ul><ul><li>40% - harmful air emissions </li></ul><ul><li>35% - carbon dioxide emissions </li></ul>
    3. 3. How do your buildings affect you? How does sustainability add value to buildings? The importance of measurement
    4. 4. Environmental? Economic? Social?
    5. 5. Housing, heating & health study, 2007. Wellington School of Medicine <ul><li>412 families with children with doctor-diagnosed asthma and low incomes/poorly heated homes </li></ul><ul><li>Installed insulation in one group, left control group </li></ul><ul><li>Found that family members living in insulated houses had 40-50% reduction in sick days off work and school, fewer GP visits and fewer hospital admissions </li></ul><ul><li>“… health benefits exceed the actual cost of fixing the houses by a ratio of almost 2:1…” </li></ul>
    6. 6. Lower bills are not the main value of sustainable buildings <ul><li>In Offices: </li></ul>building: 10% staff: 85% building running costs: 1%
    7. 7. <ul><li>Pennsylvania Light and Power: paid back the premium for their green building in 69 days through lower absenteeism and higher productivity </li></ul><ul><ul><ul><ul><ul><li>Royal Institution of Chartered Surveyors </li></ul></ul></ul></ul></ul><ul><li>UK hospital study: discharge rates reduced by 20% (1.7 days less on average) </li></ul><ul><ul><ul><ul><ul><li>CABE/ University of Sheffield </li></ul></ul></ul></ul></ul>
    8. 8. <ul><li>1 - 1.5% increased staff productivity from workforce: </li></ul><ul><ul><li>equivalent to approx. $850 per employee per year </li></ul></ul><ul><ul><li>At 5% discount rate, this equals approx. $600/m 2 over 20 years </li></ul></ul><ul><li>Green building costs and financial benefits G Kats, 2003 Massachusetts Technology Collaborative </li></ul>
    9. 9. Measuring sustainability in buildings in New Zealand <ul><li>Green Star </li></ul><ul><ul><li>Measures the environmental responsiveness of office buildings as a Star rating </li></ul></ul><ul><ul><li>Developers using measurable sustainability as a point of difference </li></ul></ul><ul><li>Home Energy Rating Scheme </li></ul><ul><ul><li>In Australia each extra star is said to increase house value by an average o f AU$12,000 </li></ul></ul>
    10. 10. Case Study: Conservation House (DOC), Wellington
    11. 11. <ul><li>Green Star ‘5* standard’ </li></ul><ul><li>Workstations max 8m from street window or atrium </li></ul><ul><li>Roof garden </li></ul><ul><li>Chilled beams for cooling </li></ul><ul><li>Rainwater collection for flushing toilets </li></ul><ul><li>Sorting of construction/demolition waste on site </li></ul><ul><li>Sensors dim lights according to daylight levels </li></ul><ul><li>Finishes: Low formaldehyde MDF, Resene environmental choice paints and Linoleum, PVC-free fittings </li></ul><ul><li>Building Management System (BMS) controls chilled beams, night purges and natural ventilation </li></ul><ul><li>Small wind turbine on roof </li></ul>
    12. 12. Predicted energy savings at Conservation House
    13. 13. Anecdotal reports from DoC suggest that first year’s savings may be in the order of $130,000
    14. 14. The human value <ul><li>Attractive, centralised stairs encourage staff to walk – lift usage is lower than other buildings of similar size </li></ul><ul><li>Layout designed to encourage communication and collaborative working </li></ul><ul><li>Anecdotal reports from DOC indicate lower absenteeism </li></ul>Acknowledgements: Belinda Tuohy, architecture+ Dave Alcock, DoC Original building owner: The Wellington Company Architect: Stuart Gardyne, architecture + Structural, fire and services consultants: Sinclair Knight Merz
    15. 15. Case Study: Conservation House (DOC), Wellington <ul><li>“ ..I hadn't appreciated the significance of the outdoor garden and I’ve been impressed by the benefits it has delivered to the well-being of staff and their enjoyment of the building.” </li></ul><ul><li>Architect Stuart Gardyne </li></ul><ul><li>“ We are also expecting other benefits... in terms of increased productivity and less sick-leave.... People...shouldn't underestimate the difference to staff moral.” </li></ul><ul><li>DOC GM Grant Baker </li></ul>
    16. 16. In commercial buildings: Main economic value is improved occupant performance Also significant energy savings Marketing tool: being seen to be green
    17. 17. <ul><li>You can’t value what you can’t measure </li></ul>“ What gets measured gets managed”