MEP · Building Systems Engineering
Engineering a more sustainable built environment.
Energy-efficient engineering designs that contribute to sustainability and cost reduction, paving the way for a more environmentally friendly future.
Education
Alma Del Mar Charter School
Education
Berkley Community School
Education
Braintree East Middle School
Education
Carver Elementary School
Education
Dover High School & Career Technical Center
Education
Early Elementary School
Education
Emerson Umbrella Center for the Arts
Education
Florida Ruffin Ridley School
Education
Holbrook PreK-12 School
Education
Josiah Quincy Upper School
Education
King Open Cambridge Street & Upper Schools Complex
Education
James L. Mulcahey Elementary School
Education
Fuller Middle School
Education
Field Elementary School
Education
Elizabeth Carter Brooks Elementary School
Education
Early Childhood Education Center
Education
Dearborn STEM Academy
Education
Bristol County Agricultural High School
Education
Boston University Children's Center
Education
Barrington Middle School
Founded
Years of Engineering Excellence
Engineering Disciplines
Platinum Project Experience
What we do
Six disciplines, one team.
Mechanical
HVAC, central plants and energy modeling.
Learn moreElectrical
Power, lighting, security and fire alarm.
Learn morePlumbing
Building plumbing and low-flow fixtures.
Learn moreFire Protection
Sprinkler systems and fire pumps.
Learn moreCivil
Site planning, grading and stormwater.
Learn moreCommunications / Technology
Voice, data, AV and building technology.
Learn moreSustainability
Designing for a net-zero future.
We focus on sustainable design practices that reduce energy use and operating costs across every building we touch: carbon-free emissions, energy monitoring and management, load reduction, and energy-efficient MEP systems.
01
Heat pumps
All-electric heat pump plants that move buildings away from fossil fuels.
02
Energy recovery
Energy recovery systems that reclaim heat from exhaust air.
03
LED lighting
Efficient lighting design and LED retrofit systems.
04
Low-flow plumbing
Green low-flow and waterless fixture implementation.
LEED PlatinumFeatured · 900 Washington Street, Boston, MA
Josiah Quincy Upper School
The project consists of constructing a new 178,024 square foot, 6-story high rise school and site work, abatement and demolition of existing buildings and sitework.
View ProjectFeatured work
A look inside our work.
01 · Education
Josiah Quincy Upper School
900 Washington Street, Boston, MA
02 · Community
Medford Public Library
11 High Street, Medford, MA 02155
03 · Recreation
Zeiterion Theatre Rehabilitation
684 Purchase Street, New Bedford, MA 02740
04 · Education
Barrington Middle School
261 Middle Highway, Barrington, RI 02806
Markets served
Buildings that serve communities.
01
Education
02
Municipal
03
Public Safety
04
Recreation
05
Government
06
Housing
News & Highlights
Recent recognition.
1975 — 2025
Honoring 50 years of engineering excellence through today's partnership.
1975
Founded
GGD begins with Civil, Plumbing, and Fire Protection Engineering.
Growth
Expanding disciplines
HVAC, Energy Modeling, Electrical, Security, and Data/Communication Systems join the practice.
Today
50 years
A trusted partner for multidisciplinary building systems design.