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Looking Ahead Where Shared Values Create Endless Opportunities.

At MacKay Sposito, we believe growth is about more than numbers or projects, it’s about people, purpose, and promise. We’re growing our reach, expertise, technology, and talent in service of a vision that’s much bigger than business. We’re passionate about the opportunity to combine forces with like-minded companies who share our belief in growth that matters—growth that creates new possibilities for clients, meaningful careers for our team members, and a positive impact in the communities we touch.

 Three coworkers in an open-plan office collaborate at a workstation, with a woman in a red top pointing at a large monitor while two colleagues look on.

How We Grow, Together.

Our firm leadership fully understands the deep pride and privilege of responsibility that comes with leading a company, stewarding its legacy, and protecting what makes it special and unique.

  • MacKay Sposito team members collaborate over design plans at a large table in a modern office with exposed wood beams and bright industrial lighting.

    Culture

    We’re guided by the culture we’ve built, the clients we serve, and the team members we champion along the way. These are the things that matter, and the things we’re committed to honoring in every partnership we pursue.

  • MacKay Sposito team reviewing a large aerial site plan together in a bright, modern office with glass walls.

    Relationships

    When exploring a new partnership, we are genuinely excited to learn more about your story, your vision for the future, and the incredible people who have made your firm what it is today.

  • Neighborhood playground with a metal tube slide, rope bridges, and net climbers on a wood-chip surface, featuring green leaf-like canopy tops and houses in the background under a bright blue sky.

    Positive Impact

    Together, we believe we can do something truly special: sustain the best of what’s been built while exploring the potential for growth, innovation, and generating lasting, positive change.
A modern timber house with a steep metal roof and large windows sits amid lush evergreens, a gravel path leading to the entrance, with a snow-capped mountain glowing at sunset in the background.

Better Outcomes for Clients & Communities.

By partnering with firms that share our commitment to excellence, innovation, and meaningful relationships, we’re aiming to elevate our capabilities and expand our efficacy. Ultimately, we’re investing in people, ensuring they have the tools and resources necessary to deliver solutions, unlock opportunity, and create long-term success for our clients and the communities they serve.

Our Services

A modern timber house with a steep metal roof and large windows sits amid lush evergreens, a gravel path leading to the entrance, with a snow-capped mountain glowing at sunset in the background.

Better Outcomes for Clients & Communities.

By partnering with firms that share our commitment to excellence, innovation, and meaningful relationships, we’re aiming to elevate our capabilities and expand our efficacy. Ultimately, we’re investing in people, ensuring they have the tools and resources necessary to deliver solutions, unlock opportunity, and create long-term success for our clients and the communities they serve.

Our Services
MacKay Sposito office lobby featuring a green living wall and logo, with two team members walking past the reception.

Unified, Cohesive & Collaborative.

Our talented, multidisciplinary team spans engineering, landscape architecture, surveying, planning, environmental consulting, and construction management. We’re connected through our shared goals of bringing ideas to life and creating spaces and infrastructure that strengthen the places where we all come together.

Our People
Aerial view of a large sports complex with multiple soccer fields (turf and grass), a cluster of baseball/softball diamonds, extensive central parking lots, and surrounding roads and trees.

Success Stories.

We’re exploring groundbreaking projects, celebrating team accomplishments, and highlighting our ongoing commitment to effecting positive change.

News and Knowledge

Success Stories.

We’re exploring groundbreaking projects, celebrating team accomplishments, and highlighting our ongoing commitment to effecting positive change.

News and Knowledge

Aerial view of a large sports complex with multiple soccer fields (turf and grass), a cluster of baseball/softball diamonds, extensive central parking lots, and surrounding roads and trees.