725 Sustainability Presentation


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This presentation provides a brief overview of the LEED for Homes process for 725 Forest St, Denver CO 80206. This house was developed by 3BY LLC (www.3-by.com) and was certified Gold and completed in May 2009.

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725 Sustainability Presentation

  1. 1. 725 Forest St: sustainability overview LEED-Homes (Pilot) - Gold (candidate) Build green. Live well.℠
  2. 2. Project Overview Developer/Architect/Interior Design: 3BY, LLC Speculative, luxury, modern, single family home Design goal: strive for LEED-Platinum, push design envelope, optimize use of 4700 sf lot (no alley), no comfort compromises,entertainment-friendly, low- maintenance Other requirements: Up to 5 bedrooms/5 baths, 2800 sf above grade, 2 car attached garage, open plan, up/down laundry, wine room, media room. Less than $160/sf direct construction costs. More information: http://725.3-by.com
  3. 3. Major LEED strategies High-performance envelope: Insulated Concrete Form foundation, SIP Construction, High-performance windows • Contributed to: Insulation, Air Infiltration, Material-efficient Framing, Environmentally Preferable Products, windows • 6 of 89 LEED-H credits • Incremental cost ~$5,000
  4. 4. Major LEED strategies (cont.) Renewable energy and high-efficiency systems: • Contributed to: space heating/ cooling, water heating, renewable energy • 12 of 89 LEED-H credits • Incremental cost: ~$15,000
  5. 5. Major LEED strategies (cont.) Compact (4700 sf), infill site, in Denver’s Mayfair neighborhood: • contribute to: site selection, preferred locations, infrastructure, community resources, access to open space, and compact development • 15 of 89 LEED-H credits • Incremental cost: masters thesis??
  6. 6. Major LEED strategies (cont.) Water efficiency: • Contributes to: irrigation system, indoor water use • 7 of 89 LEED-H credits • Incremental cost: nominal $, performance, user-experience
  7. 7. Major LEED strategies (cont.) Environmentally preferable materials: • contributes to: Environmentally preferable products. • FSC certified framing, FSC flooring, FSC sheathing, reclaimed wood, 80% recycled MDF, 20% fly ash concrete, Ikea kitchen, regional dry wall • 5 of 89 LEED-H credits • Incremental cost: some $ savings
  8. 8. Financial Analysis 3763 Livable Sq. Ft. (excl. garage) $160 per livable sq. ft. direct construction costs (excl.. all soft costs and general conditions expense) Total cost premium for LEED-Gold versus code-compliant: < 5% Operating cost savings: $1,000+ per year at current prices. (722 therms NG/3226 kwh)
  9. 9. Summary and lessons learned Start with a preferred site Be realistic about what tradeoffs you are willing to make, e.g. toilets, showers, motion sensors, waste management,lighting Follow-up on the details A high LEED rating is not a substantial cost increase, more a matter of focus Why not platinum?
  10. 10. Key Partners / Vendors Energy Logic: LEED Rating/inspection LaFarge Concrete Integra-Spec ICF of Colorado Sutherland’s Lumber ACH Foam Technology: R-Control SIPS Copper Creek Architectural: Gienow windows Cooper Heating & Cooling: HVAC Cronen Plumbing Environmental Designs Inc.: landscaping Bella Energy: solar PVC Ferguson Enterprises: plumbing and appliances
  11. 11. A few pictures of construction