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The HESCHONG MAHONE GROUP, INC. (HMG) provides professional consulting services in the field of building energy efficiency. We specialize in applying our knowledge of building design, construction technology, program design and policy development to the problem of making buildings more energy efficient.  The firm offers direct, personal service to its clients.  Broad experience with both utility and government clients allows HMG to provide customized, expert consulting services tailored to the needs of the project, its budget and schedule.  HMG is a woman-owned small business. 

The firm was founded by two architects, Lisa Heschong and Douglas Mahone, in 1994, and has grown to its current strength of 40 professionals.  As Principals, they continue to manage the growth of the firm, and to provide oversight of its operations.

HMG is focused on five areas of market involvement, all related to making buildings more energy efficient. 


HMG’s staff and leadership are organized into these five market areas, with a Group Manager responsible for each:

Program Design and Implementation – Focused on energy efficiency programs, typically run through utility program administrators.  We have special expertise in the multifamily buildings market, and have also run programs in the single family and commercial existing buildings markets.  Julianne Summerford is the Group Manager.

Measurement and Evaluation – Evaluating the effectiveness and savings of energy efficiency programs, we have conducted process evaluations, impact evaluations, market assessments and potential studies.  We have also coordinated portfolio level evaluations. Catherine Chappell is the Group Manager.

Codes and Standards – Involvement in all aspects of energy efficiency building codes and appliance standards, from code development through enforcement assessment, at both the state and national levels, including policy development for savings evaluation.  Catherine Chappell is the Group Manager.

Building Science Research – Conducting in-depth research in some of the most significant areas of energy efficiency, including daylighting systems and metrics, large-scale hot water systems, whole building energy simulation, and zero net energy buildings Abhijeet Pande is the Group Manager.

Emerging Technology – Assessing promising new technologies for program administrators and manufacturers, such as daylighting controls, window films, absorption chillers, and lighting systems.  Abhijeet Pande is the Group Manager.

While these market areas are focused on different clients and funding sources, they all share the theme of improving the energy efficiency of buildings. There are synergies between these areas of practice that mutually reinforce their strengths and create additional opportunities for the company.

Heschong Mahone Group
p: (916) 962-7001
f: (916) 962-0101

HMG Main Office - Sacramento
11211 Gold Country Blvd., #103
Gold River, CA 95670

HMG Oakland Branch - San Francisco 
436 14th Street, Suite 1020
Oakland, CA 94612

HMG Encinitas Branch - San Diego
539 Encinitas Blvd., Suite 105
Encinitas, CA 92024



Current Job Openings at HMG

Lisa Heschong is announced 2011 Recipient of the James Haecker Award for Distinguished Leadership in Architectural Research


 HMG Programs


CA Benchmarking Work Group

Daylighting Plus Program

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Daylighting & Productivity Studies

Copyright: Heschong Mahone Group, Inc. 2012