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Our Story
Beginning as O’Hara Construction Co. founded in 1950 by Irish immigrant coal mine electrician Patrick O’Hara as a Chicago commercial electrical contractor. By the early 1960’s the company expanded into general contracting self-performing masonry, concrete and electric for private clients including Large Retailers and the Chicago Archdiocese (Churches, schools). The 1980’s brought additional expansion into public work which continued until the early 2000’s. In 1990 a divisional company was started by a third generation family member to focus on “Specialty” private projects that incorporate design and engineering along with performing electrical trade scope.
What We Do
Commercial Experience
Auto Dealership / Service
Retail Store
Apartments & Condominiums
Assisted Living
House
Residential Building
Single Family Residential
Regions & Counties Serviced
- Chicago, N.W. Indiana
Illinois 1
- Cook
Our CSI Codes
01 24 13 - Value Engineering
01 29 83 - Payment Procedures for Testing Laboratory Services
01 31 13 - Project Coordination
01 31 19.13 - Preconstruction Meetings
01 84 19 - Interior Finishes Performance Requirements
01 85 00.00.01 - Conveying Equipment Performance Requirements
01 87 13 - Equipment Performance Requirements
01 88 16 - Selective Construction Performance Requirements
01 91 23 - Interiors Commissioning
01 91 23.13 - Interior Construction Commissioning
01 91 23.43 - Stairways Commissioning
03 08 00.00.01 - Commissioning of Concrete
04 08 00.00.01 - Commissioning of Masonry
25 05 26 - Grounding and Bonding for Integrated Automation
26 01 10 - Operation and Maintenance of Medium-Voltage Electrical Distribution
26 01 20 - Operation and Maintenance of Low-Voltage Electrical Distribution
26 06 10 - Schedules for Medium-Voltage Electrical Distribution
26 06 20 - Schedules for Low-Voltage Electrical Distribution
26 06 20.26 - Wiring Device Schedule
26 10 00.00.01 - Medium-Voltage Electrical Distribution
26 18 13 - Medium-Voltage Cutouts
26 20 00.00.01 - Low-Voltage Electrical Distribution
26 21 00.00.01 - Low-Voltage Overhead Electrical Power Systems
26 43 13 - Transient-Voltage Suppression for Low-Voltage Electrical Power Circuits
27 05 26 - Grounding and Bonding for Communications Systems
33 71 36 - Extra-High-Voltage Wiring
33 71 36.13 - Overhead Extra-High-Voltage Wiring
33 71 39 - High-Voltage Wiring
33 71 39.13 - Overhead High-Voltage Wiring
33 71 49 - Medium-Voltage Wiring
33 71 49.13 - Overhead Medium-Voltage Wiring
33 81 23 - Aerial Cable Installation Hardware
34 21 16 - Traction Power Substations
34 21 16.13 - AC Traction Power Substations
34 21 16.16 - DC Traction Power Substations
40 95 73 - Process Control Wiring