About | A. DeLeo Construction Company, Inc.

DeLeo foreman directing night operations

DeLeo excavator on active night job site

1994

Operating
Since

Technical Identity

Underground Utility & Civil Contractors — Built for the Energy Sector

A. DeLeo Construction Company has operated as a union-affiliated underground utility and civil contractor in the Northeast energy sector since 1994 — performing ductbank systems, conduit installation, vault and manhole construction, substation civil work, and heavy civil site development for utilities, fuel terminal operators, and industrial energy facility owners. Civil and underground electrical utility scopes are self-performed under one coordinated operation.

What We Execute

What DeLeo Executes

All scopes are self-performed by DeLeo crews — no subcontracting of primary scope.

Underground Electrical Infrastructure

Concrete-encased ductbank systems, conduit installation and routing, cable pathways for distribution networks. Work is performed within active utility corridors and adjacent to energized infrastructure. This is DeLeo's primary scope and the basis of its IOU client relationships.

Utility Structures

Precast and cast-in-place vaults, manholes, and access chambers — installed to utility specifications with conduit entry, sump, and frame/cover integration. Structure placement is coordinated with ductbank geometry and pull-point spacing requirements.

Substation Civil & System Integration

Conduit entry and ductbank tie-ins at substation perimeters, trenching within station yards under utility protection protocols, and coordination with protection engineers on sequencing and outage windows. Execution in active electrical environments under strict access controls.

Heavy Civil for Energy Facilities

Site preparation, structural concrete (equipment pads, transformer foundations), underground utility installation, access road construction, and facility drainage systems for substations, fuel terminals, and industrial energy sites — scoped to engineering tolerances, not general grading standards.

Storm, Sewer & Utility Infrastructure

Storm drainage, sewer, and underground utility installation integrated into site development, utility, and energy-sector projects. Trenching, pipe installation, structure placement, and tie-in to existing systems — performed across all soil conditions in CT, NY, NJ, MA, and RI.

Emergency Response

24/7 on-call capability for utility clients. Underground electrical failures, storm-related infrastructure damage, and urgent civil utility failures addressed with rapid crew mobilization — executed under the same safety protocols as planned work, without shortcuts.

Leadership

Direct Ownership. Direct Accountability.

Family-owned and operated since 1994.

AD

Albert W. "Al" DeLeo IV

President & Owner

Al DeLeo Jr. serves as President of A. DeLeo Construction Company, bringing nearly two decades of experience in the construction industry. Since taking a leadership role in company operations, Al has helped guide A. DeLeo's continued growth and expansion throughout the Northeast, with a focus on operational excellence, strategic development, and long-term client relationships.

30+ years directing civil & utility construction operations

Headquartered in Hamden, CT · Operating CT, NY, NJ, MA, RI

The Crew