Katy Hollbacher, P.E.


Beyond Efficiency empowers clients to create enduring human-centered buildings.


Super-efficient buildings are critical to ensuring we hand off a planet ready to embrace future generations. When focusing on efficiency, it's important not to get blinded by isolated components and neglect the ultimate goal of optimizing the entire system--from the building to the site, community and beyond. After all, elements of a building are only as efficient as the larger systems they comprise.

Yet a truly successful building--one that's loved and stands the test of time--transcends efficiency. It is healthy, comfortable and filled with natural light; it feels good and improves people’s well-being. It has thoughtfully designed spaces that are smart and functional. It considers and connects to the community.

Efficiency is vital, but without these intangible and "beyond the lot line" human elements a building will not endure (so much for efficiency!). Buildings are for people, and they must be loved to endure. This is the premise of our philosophy and approach.  

Katy Hollbacher founded Beyond Efficiency in 2009 to provide technical consulting services for high-performance building projects, something that was sorely lacking in the marketplace. She has more than fifteen years experience in the A/E/C and green building industries and is passionate about educating clients and team members on building science and best practices.

Prior to founding Beyond Efficiency, Katy spent five years managing Build It Green's suite of technical information programs, including the Ask an Expert green building hotline and Best Builders technical assistance program. She was also an engineer at Wiss, Janney, Elstner Associates, a national consulting firm specializing in the forensic investigation and repair of modern and historic structures. At home in the field as well as the office, Katy has pounded nails, hung drywall, and pulled wires on various construction projects.

She has presented for a broad range of clients including AIA, PG&E, ACI, West Coast Green, Structural Engineers Association of Northern California (SEAONC), and NARI as well as various public agencies, USGBC and Passive House chapters. Katy was a founding board member of the non-profit Passive House California and holds a Master of Science in Civil/Structural Engineering from the University of Michigan.

Contact Katy Hollbacher, P.E.

Contact Katy Hollbacher, P.E.

Beyond Efficiency Inc.
Principal + Founder
1502 Walnut
Suite C
Berkeley, California  94709
Phone: 415-236-1333


Service Area

Statewide service provider in:
  • California