Leddy Maytum Stacy Architects 

San Francisco   
Overall Rank: 28th 
Rank in Each Category: 
• Business: 143rd 
• Design: 44th

This firm in San Francisco is proof that you don’t have to be a large firm to make a big impact through sustainable design. With just 16 employees, LMS has embedded the ethos of energy efficiency into its entire practice. Fifty-six percent of the gross square footage of the firm’s projects met AIA 2030 challenge standards; 100 percent used energy modeling and pursued a potable water reduction beyond what was mandated by code. Fifty-six percent of staffers have LEED credentials. “In some ways, staff are preselected because of our reputation and how much emphasis we put on sustainable design,” says Richard Stacy, FAIA, a firm principal. “We don’t have to bug people to pursue accreditation; they are self-motivated.”

LMS is also proof that you don’t have to break the budget to achieve energy efficiency. An affordable senior housing project that the firm designed in Oakland, Calif., was certified LEED Platinum. Last year, the firm completed Sweetwater Spectrum in Sonoma, Calif., a net-zero residential community for autistic adults that was built to LEED Gold standards. “We don’t see budget as an excuse not to do sustainable design,” Stacy says. “We get creative with taking standard materials like fiber-cement siding and coming up with our own inventive ways to make that into a rainscreen.”

Research is another key component of the LMS approach: Several projects, like Sweetwater, are pilot programs that can hopefully be replicated. “We develop our research and our knowledge base primarily by doing research on a case-by-case basis and then sharing that info,” says principal Marsha Maytum, FAIA.

Sustainability is such a core value that principal William Leddy, FAIA, believes the descriptor to be superfluous: “We’re working hard to get rid of the word sustainability, because we believe good design is good design. You cannot think of it as a separate thing.”


Rank Firm Name Score
1 Leddy Maytum Stacy 100.00
2 Lake|Flato Architects 98.71
3 Architectural Resources Cambridge 93.28
4 WRNS Studio 92.77
5 Westlake Reed Leskosky 92.17
6 Pei Cobb Freed & Partners Architects 88.13
7 Meyers + Associates 85.63
8 CO Architects 81.12
9 EYP Architecture & Engineering 81.10
10 SRG Partnership 80.61
11 THA Architecture 80.38
12 William Rawn Associates 79.72
13 RNL Design 76.66
14 Miller Hull Partnership 74.19
15 LPA 71.48
16 Fentress Architects 71.43
17 DLR Group 71.33
18 NAC | Architecture 70.67
19 Payette 70.53
20 Studios Architecture 70.14
21 Mark Cavagnero Associates 69.34
22 Clark Nexsen 69.00
23 SmithGroupJJR 67.23
24 SfL+a architects 67.05
25 Ballinger 66.94
26 Caples Jefferson Architects 66.44
27 Tate Snyder Kimsey 64.99
28 Analogue Studio 64.98
29 Goettsch Partners 64.77
30 Perkins+Will 64.74
31 Richärd+Bauer Architecture 64.21
32 Paul Murdoch Architects 63.71
33 NBBJ 63.46
34 HOK 63.14
35 ZGF Architects 62.47
36 Sorg Architects 62.45
37 HMC Architects 61.93
38 Skidmore Owings & Merrill 61.50
39 ELS Architecture and Urban Design 61.36
40 KPF 60.65
41 Tsoi/Kobus & Associates 59.99
42 Eskew+Dumez+Ripple 59.72
43 BAR Architects 59.51
44 Sasaki Associates 59.49
45 Marlene Imirzian & Associates Architects 59.24
46 John Ronan Architects 58.39
47 NC Office 56.93
48 Sage and Coombe Architecture 56.57
49 Integrated Architecture 55.45
50 Cannon Design 53.47

See all the ARCHITECT 50 results here.