A disciplined field operation serving serious clients across public and private sectors.
Seylone is a self-performing specialty firm headquartered in New York, delivering field execution at engineering-grade standard for the firms and agencies that build, maintain, and rebuild across eight states. Two integrated operating groups, one accountable team.
Certified DBE, MBE, and SBE. Built for work where conflicts matter and documentation is non-negotiable.
Two divisions. One uncompromising standard. Every service, self-performed.
Seylone Construction Group
Construction-side field services delivered at prime-contractor standard.
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Concrete Coring & Sawcutting
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Structural Probing
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Localized Excavation
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Precision Trenching
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Site Clearing
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Surface Restoration
Seylone Earth & Civil Group
Subsurface investigation, test pits, SUE, and specialty drilling programs.
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Test Pits
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Subsurface Utility Engineering (SUE)
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Vacuum Excavation
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Geotechnical Drilling
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Environmental Drilling
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Limited Access / Interior Drilling
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Monitoring Well Installation
Marquee work across the Northeast. And beyond.
Seylone's project portfolio includes major public infrastructure, private development, and institutional programs across eight states.
Sack Wern Houses
Geotechnical, geophysical, and concrete coring services supporting Bronx redevelopment for Douglaston Development.
Case Study →St. Nicholas Park Staircase Reconstruction
Subsurface investigation and bluestone tread restoration supporting reconstruction of a historic Harlem park staircase.
Case Study →Bayview Correctional Facility Redevelopment
Interior test pit excavation supporting the adaptive reuse of a Sandy-shuttered Manhattan correctional facility.
Case Study →Built to plug into any team. At any scale.
Prime Contractors
Subconsultant execution, integrated into prime-led delivery teams on complex projects.
Engineering Firms
Field support for investigation, exploration, and documentation programs.
Developers
Private sector site preparation, utility investigation, and restoration.
Agencies & Institutions
Direct agency engagement backed by DBE / MBE / SBE certifications.
