— About Northline —
Built on Discipline. Driven by Results.
A full-service general contractor delivering commercial projects with precision, accountability, and experienced leadership across the Mid-Atlantic and beyond.
— Our Approach
Integrated Delivery. Vertical Alignment.
Our vertically integrated platform supports the full project lifecycle from concept to completion. By managing the entire process from due diligence and design coordination to final construction, we identify inefficiencies early and create stronger alignment between design and execution.
— Core Values
What Guides Every Decision
Northline is guided by core values that shape every decision, ensuring consistency and trust through every project phase.
Vertical Integration
Supporting projects from concept through completion to identify inefficiencies and align design with technical execution.
Technical Transparency
We provide straightforward reporting on budget, risk, and progress so owners always understand exactly where their project stands.
Safety Culture
Safety is embedded into every planning phase and daily operation. We believe the safest projects are the best-managed projects.
— Market Expertise
Diverse Experience. Proven Performance.
NCG brings deep experience across a wide range of asset classes. Our team understands the unique challenges of entitlement, design coordination, and construction phasing for high-stakes developments.
— Safety Commitment
A Culture of Safety
Safety is a core responsibility to our people and communities. We believe the safest projects are the best-managed projects, and our safety performance is a direct indicator of overall project discipline.
— Executive Leadership
Principled Direction. Decades of Expertise.
Northline is led by a veteran executive team with a proven track record in high-stakes commercial development. We combine technical field experience with strategic project controls to ensure predictable results across every asset class.
David DuRant
President
35+ years of experience
Led over $6B in projects from land acquisition through final turnover. Specialist in executive leadership, preconstruction, and risk management.
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Led over $6B in projects from land acquisition through final turnover. Specialist in executive leadership, preconstruction, and risk management.
Michael J. Danyi
VP of Preconstruction
20+ years of experience
Expert in bridging accounting and field trades. Focused on realistic budgeting, early risk identification, and strategic design progression.
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Expert in bridging accounting and field trades. Focused on realistic budgeting, early risk identification, and strategic design progression.
Stephen Kalthoff
VP of Operations
30+ years of experience
Veteran of ground up commercial builds. Oversees schedule and budget discipline, procurement, and high-level subcontractor coordination.
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Veteran of ground up commercial builds. Oversees schedule and budget discipline, procurement, and high-level subcontractor coordination.
Andrew V. Marusak, IV
VP of Construction Management
25+ years of experience
Specialist in base building and complex renovations. Expertly balances field operations with owner-side construction management.
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Specialist in base building and complex renovations. Expertly balances field operations with owner-side construction management.
Ready to Build With Confidence?
Talk to our team about your next project. No obligation, no guesswork. We provide the early-stage clarity and technical oversight needed to turn your vision into a predictable, high-performing reality.
