The needs of our society are ever-changing: HDJ’s engineering team strives to meet these needs with intentionally-designed living spaces, workplaces, senior living communities, healthcare centers, and commercial spaces.
HDJ’s in-house engineering team of mechanical/plumbing and electrical engineers support projects for clients throughout the United States. Carefully and thoughtfully designed systems have the potential to improve lives – the vision behind everything we do.
To accomplish these goals, our engineers work closely with our architects to bring diverse projects to life. Our engineers design systems that meet codes and requirements across a variety of sectors.
Safety, sustainability, and reliability are at the forefront. Our experience with technology, planning, cost estimating, and problem-solving enables us to provide innovative, efficient, and cost-effective solutions for our clients.
Learn about our Sustainability efforts
HDJ has supported more than $1.2 Billion in construction value in the last four years alone, including projects in:
Supporting projects throughout the United States, HDJ places a tremendous amount of importance on managing costs on behalf of our clients. HDJ has created strategies and processes to work closely with our clients as trusted advisors to provide efficiently-planned and designed projects that maximize value within a budget.
As industry leaders in affordable housing, HDJ designs systems to support affordable housing projects throughout the country. Our passion is improving the lives of our local communities through design, all while driving our client’s bottom line.
Expertly designed systems are key to balancing the resident experience with long-term operational needs. Our engineering expertise encompasses new construction, adaptive reuse, renovation, capital expenditure, and additions
Our Market Rate Multifamily Sector
Retail centers rely on innovative MEP design to bring to life a positive and memorable experience. Our engineers meet the ever-evolving needs of our commercial retail clients with inspired design while maximizing value.
Our engineers work closely with our architects to deliver the best residential care imaginable for senior communities. Our experience in senior living developments spans from a few dozen to several hundred residents, and from $1 million to over $30 million in construction costs.
As healthcare organizations are challenged to deliver an outstanding patient experience, we navigate these challenges by designing spaces that give world-class care for all types of patients. Our extensive healthcare experience includes programming, planning, design and construction administration services.
As healthcare organizations are challenged to deliver an outstanding patient experience, we navigate these challenges by designing spaces that give world-class care for all types of patients. Our extensive healthcare experience includes programming, planning, design, and construction administration services.
Our Government & Education Sector
HDJ is continuously seeking passionate mechanical engineers, electrical engineers, engineering professionals, and engineering interns to share our vision and join our team to help us improve lives through design.
Explore our engineering job openings across the United States
HDJ is an architectural engineering firm with headquarters in Michigan and distributed workforce locations throughout the United States. The HDJ team of engineers supports projects nationwide. Team up with our architects and engineers today to efficiently plan and design your projects to maximize value within budget.
Contact us at any one of our offices, including:
Atlanta, GA
Chicago, IL
Cleveland, OH
Detroit, MI
Grand Rapids, MI
Los Angeles, CA
Muskegon, MI
Phoenix, AZ
Atlanta, GA
Chicago, IL
Cleveland, OH
Detroit, MI
Grand Rapids, MI
Los Angeles, CA
Muskegon, MI
Phoenix, AZ
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September 2, 2025
iLearn more about what it means to be an HDJ intern.
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Homewood Suites | Holland, MI
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December 8, 2024
Nestled in the heart of scenic Holland, Michigan, the newly opened Homewood Suites by Hilton represents the perfect blend of comfort, convenience, and modern design. Whether catering to business travelers or families on an extended stay, this 123-room, four-story hotel delivers a home-away-from-home experience that sets a new standard in hospitality.
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TEN21 | Muskegon, MI
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September 29, 2022
Downtown Muskegon is undergoing an impressive transformation, and the General Capital Group has played a crucial role. Community reinvestment, redevelopment, and revitalization are vital to this change. The heart of Muskegon’s Lakeshore has seen a growing community come alive with history, art, performance venues, and culture. This growth has created the need for more affordable living options. TEN21 Apartments is the General Capital+HDJ team’s latest endeavor and an exceptional example of this growth and transformation.
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