Leadership in Energy and Environmental Design for Existing Buildings (LEED-EB) version 3 (v3) encourages the recertification of existing buildings by offering them four bonus points (“bonus approach”). This study investigates the influence of a bonus approach on recertification strategies. We analyzed 112 LEED-EB v3 certification-to-recertification office space projects in Washington, DC; Chicago; and New York City. The percentage of average score (PAS) was used to evaluate the difference in certification strategies between (1) gold certification and recertification (with bonus); (2) silver certification and gold recertification (with bonus); (3) gold certification and recertification (without bonus); and (4) silver and gold certification, and gold recertification (combined data from Cases 1–3). In Case 1, recertification showed worse results in the materials and resources (MR), and indoor environmental quality (EQ) categories. In Case 2, recertification showed better results in the water efficiency, and energy and atmosphere categories. In Case 3, certification and recertification showed the same results. We found that recertification of LEED-EB v3 projects with a four-point bonus system resulted in lower results in the MR and EQ categories. This highlights the need to include additional controls in the LEED-EB v3 and v4.1 bonus systems, possibly including a moderate penalty for diminishing achievements in certain categories.

现有建筑能源与环境设计领先 (LEED-EB) 第 3 版 (v3) 鼓励对现有建筑进行重新认证，为现有建筑提供四个奖励积分（“奖励方法”）。本研究调查了奖励方法对重新认证策略的影响。我们分析了华盛顿特区的 112 个 LEED-EB v3 认证到重新认证办公空间项目；芝加哥; 和纽约市。平均分百分比（PAS）用于评估（1）金牌认证和再认证（有奖金）之间认证策略的差异；（2）银牌认证和金牌换证（有奖金）；（3）金牌认证和再认证（无奖金）；(4) 银牌和金牌认证，以及金牌再认证（案例 1-3 的组合数据）。在情况 1 中，重新认证在材料和资源 (MR) 以及室内环境质量 (EQ) 类别中显示出更差的结果。在案例 2 中，重新认证在水效率、能源和​​大气类别方面显示出更好的结果。在案例 3 中，认证和重新认证显示了相同的结果。我们发现使用四分奖励系统重新认证 LEED-EB v3 项目导致 MR 和 EQ 类别的结果较低。这凸显了在 LEED-EB v3 和 v4.1 奖励系统中包含额外控制的必要性，可能包括对某些类别的成就递减的适度惩罚。认证和重新认证显示了相同的结果。我们发现使用四分奖励系统重新认证 LEED-EB v3 项目导致 MR 和 EQ 类别的结果较低。这凸显了在 LEED-EB v3 和 v4.1 奖励系统中包含额外控制的必要性，可能包括对某些类别的成就递减的适度惩罚。认证和重新认证显示了相同的结果。我们发现使用四分奖励系统重新认证 LEED-EB v3 项目导致 MR 和 EQ 类别的结果较低。这凸显了在 LEED-EB v3 和 v4.1 奖励系统中包含额外控制的必要性，可能包括对某些类别的成就递减的适度惩罚。