About Us
Our Journey in Construction, Your Path to Satisfaction
Construction Guided by Experience. Driven by Safety. Delivered with Confidence.
Your Guide Through Complex Construction.
For 25 years, McDonnel Group has helped owners move through construction with clarity, discipline, and a safety-first mindset that protects both people and projects.
With over 5,800 consecutive safe days, an EMR well below the industry average, and a culture where everyone goes home safely every day, McDonnel brings a proven, proactive approach to every jobsite.
Our performance record speaks for itself:
- 100% of projects completed on or ahead of schedule
- 0 claims — never failed a regulatory inspection
- 0 latent defects — no costly surprises after handover
- ABC Accredited Quality Contractor
When the environment is complex and the stakes are high, McDonnel is the partner that brings clarity to the plan, control to the build, and confidence to the outcome.
Guided From Start to Finish
Clients Who Value Safety, Precision & Partnership
McDonnel Group works with owners, developers, and facility leaders across the Gulf Coast, with a strong emphasis on industrial environments where safety, reliability, and uptime are critical.
Typical Clients
- Industrial plant owners & operators
- Healthcare systems
- Hospitality & multifamily developers
- Corporate & commercial building owners
- Municipal and institutional agencies
- Architects, engineers, and development partners
- Trade contractors who share our commitment to safety and quality
Typical Projects
- Blast-resistant buildings
- Hospitals, clinics & medical office buildings
- Control rooms & MCC/switchgear facilities
- Hotels, mixed-use developments & multifamily communities
- Pre-engineered metal buildings
- Office interiors, retail spaces & tenant improvements
- Public facilities, schools & government buildings
Across every sector, our approach stays the same: guide the process, protect the people, and deliver the results you expect.
Our History
Built on Experience. Strengthened by Performance.
Founded in 2000, McDonnel Group began with a simple belief that owners deserve a contractor who communicates clearly, plans proactively, and treats every project like their own.
From our roots in New Orleans to our expansion into Houston and across the Gulf Coast, we’ve grown by staying true to that belief. Today, our leadership maintains a hands-on approach grounded in jobsite excellence.
For more than two decades, we’ve earned a reputation for:
- Building complex industrial and commercial environments
- Delivering work safely (5,800+ safe days)
- Maintaining “Best in Class” financial performance
- Providing clarity and professionalism from preconstruction through closeout
- Guiding owners through difficult decisions with transparency and care
What began as a small, dedicated team has become one of the Gulf Coast’s most trusted construction partners, and we’re just getting started.
Leadership Team
Hands-On. Approachable. Field-Tested.
McDonnel Group is led by a team of builders, not just executives.
Our leaders have walked jobsites, managed schedules, solved field conflicts, and understand firsthand what it takes to deliver complex projects safely and successfully.
Their philosophy is simple: Lead by example. Plan with purpose. Guide with clarity
Allan McDonnel
President
Steven Marse
Vice President – Industrial
Stephen McGarry
Business Unit Manager
Our Proven Process
A Clear Path From Concept to Completion
Every successful project follows a roadmap.
McDonnel Group’s Proven Process of Plan • Build • Deliver provides the project stakeholders with the discipline every project deserves.
This process fosters open communication, ensures transparent decision-making, mitigates risks, and makes outcomes more predictable.
PLAN | Pre-Construction Excellence
Where certainty begins. We align vision, budget, scope, and logistics before construction starts, saving time, reducing risk, and preventing surprises.
BUILD | Construction in Control
Where discipline drives progress. Our teams coordinate all trades, maintain strict safety protocols, manage schedules, and keep the field running smoothly.
DELIVER | Turnover & Long-Term Value
Where your vision becomes reality. We ensure every detail is ready for occupancy, every requirement is closed out, and every stakeholder is confident in the final result.
Plan Includes:
- Owner vision & success alignment
- Budget management
- Strategic sequencing & logistics planning
- Constructability reviews
- Permitting & government interface
- Procurement & subcontractor prequalification
- Risk identification & mitigation
- Expediting long-lead materials
Build Includes:
- Zero-incident safety management
- Systems coordination (BIM + field alignment)
- Schedule & logistics execution
- Quality & compliance controls
- Rapid issue resolution
Ongoing risk management
Deliver Includes:
- Commissioning & use-ready preparation
- Financial closeout & contract fulfillment
- Final walk-through & owner training
- Vision confirmation
- Lessons learned & continuous improvement
Let’s Build What’s Next Together
Whether you’re planning your next project or looking to build your career with a team that values safety, clarity, and growth, McDonnel Group is ready to guide you.