11 ATTACHMENTS 6 TO 13 - Laserfiche WebLink

City's Green Building Ordinance. However, staff does acknowledge that CALGreen (Basic measures only) will be applied to some projects that are currently exempt under our current code, i.e. buildings in Downtown, residential homes under 2,000 square feet, additions, and commercial project under 20,000 square feet. Therefore, the potential increase in construction costs will be applicable to those projects. It is important to note that the City can not exempt those projects from CALGreen and that the increase in construction costs for those projects will be encored State -wide come January 1, 2011. It is also important to note the benefits for building to a green standard. Staff has reviewed an energy- effectiveness study that was prepared by Gabel Associates, LLC and published in April 2010. The study, Climate Zone 12 Energy Cost - Effectiveness Study projected the costs associated with the energy measures and the payback period for those measures. The following is a table to illustrate the information provided in the study: Building Type 15% above Overall cost Payback Period current code increase % Single- family home, 2,025 sf $0.62/sf to $1.41/sf 0.5% to 1.14% 10.4 to 13.4 years Single- family home, 4,500 sf $0.48 /sf to $1.13/sf 0.39% to 0.92% 12.4 to 15.9 years 2 story, 8 unit multi - family building, 8,442 sf $0.58/sf to $1.82 /sf 0.53% to 1.65% 11.0 to 18.7 years 5 story, 40 unit multi - family building, 36,800 sf $0.69 /sf to $2.31/sf 0.55% to 1.85% 8.3 to 17.2 years 1 story office building, 10,580 sf $1.83/sf to $3.84/sf 1.47% to $3.08% 7.2 to 13.8 years 5 story office building, 52,900 sf $0.51/sf to $1.30 /sf 0.36% to 0.92% 2.5 to 3.8 years The study states that regardless of the building design, occupancy profile or number of stories, the incremental improvement in overall annual energy performance of buildings which exceed the 2008 Title 24 Building Energy Efficiency Standards by 15% appears cost - effective. However, the study further notes that each building's overall design, occupancy type and specific design choices may allow for a large range of incremental first cost and payback projections.