Civil & Earthwork

On The Wire Services Pty Ltd provides comprehensive solutions for transmission line construction and maintenance, specializing in difficult access and technically challenging work.

Commercial construction firm based in Houston, specializing in full-service commercial construction.

On-Track Earthworx Ltd. is a commercial earthworks contractor specializing in commercial earthworks in and around the Edmonton area.

On Track Safety Ltd. offers complete traffic control solutions focused on higher standards and safer work zones, building partnerships since 1998. The management team and traffic services employees of On Track Safety have played a key role in the Traffic Management of Ontario Freeways and Highways since 1998.

Onward Construction is dedicated to excellence in commercial construction and tenant improvements. Our team collaborates with you right from the start, offering expert guidance and innovative problem-solving to bring your vision to life.

A nationwide full-service commercial and residential paving contractor providing asphalt, concrete, and paver solutions.

ootbox delivers full-service offices and container builds wherever they are needed. They offer standard models and custom builds for commercial, residential, and industrial needs.

OPCMIA Local 72 is a labor organization representing Cement Masons and Plasterers in Central & Eastern Washington, North Idaho, and Montana. It focuses on promoting skilled craftsmanship, safe working conditions, and family wages and benefits. They offer training and apprenticeship programs.

Openshore Pty Ltd is a horizontal directional drilling and civil construction company providing underground service installations using trenchless and conventional construction techniques.

Local 450 has negotiated fair working conditions, wages, and benefits for working men and women while providing the best qualified workforce for our signatory contractors.

Operation Freedom Construction, LLC, is a Federally and NYS certified SDVOSB. They specialize in heavy equipment, hauling, excavation, and general construction services. They also work with landscaping, snow removal, and other seasonal services.

Opperman Construction Co. provides underground utilities, earthwork, and concrete services. They strive to be fair and just, an employer with employees that want to work for them, a company their customers want to work with – guided by confidence in each other, good family values, hard work, and faith in God.

Optimum Air & Water provides certified testing, adjusting, and balancing services to general contractors, mechanical contractors, and independent business owners. They are a client-focused, professional firm dedicated to delivering exceptional performance, quality, and service.

Pegasus Construction, Inc. is a leading Phoenix commercial general contractor that puts people first. They specialize in commercial construction, design-build, remodels, and tenant improvements.

Optimum Seismic, Inc. is a leading earthquake retrofit company in California providing high quality structural engineering, metal fabrication and construction services for multifamily and commercial buildings.

Optimum Services, Inc. is a leading provider of public and private sector land and construction services including earthwork and waterway creation, infrastructure and utility construction and roadway improvements. OSI is also a national expert in disaster relief services including debris removal, demolition and reconstruction. OSI is a fully comprehensive site contractor providing clients with complete project management services.

Option Construction Corp. provides general contracting, petroleum construction, facility maintenance, and upgrade services, primarily serving commercial, light industrial, and downstream oil and gas industries. They operate across British Columbia, Alberta, Saskatchewan, Manitoba, and Ontario.

ORBIN Contracting is a commercial general contracting firm specializing in maintenance and renovations in healthcare, secure spaces, and technical areas. They focus on delivering smarter construction from pre-lease to closeout, particularly in high-compliance, regulated industries. They offer pre-lease test fit analysis, manage field conditions, construction logistics, and trade sequencing.

Orchard City Electric is an electrical contractor based in Kelowna, BC, providing residential and commercial electrical services and lighting solutions.

Orchard Earth & Pipe Corp. is a full-service civil and paving contractor centrally located in New York State, providing a diverse range of construction services.

DSC Builds provides general contractor and commercial pool solutions for industrial and commercial clients throughout Florida.

Local ceiling and acoustical tile installer/reseller. Steel stud construction. Fast, efficient, clean.

Oregon Electrical Contractor focusing on HVAC Controls and low voltage systems.

Orion Construction is a design-build contractor specializing in industrial, commercial, and multi-family construction in the Lower Mainland and beyond. They provide design, permitting, preconstruction, and construction management.

Orion Contracting Corp is a leading contracting company in UAE for general contracting and steel buildings. They specialize in residential, commercial, and industrial projects.

Orion Engineers, PLLC is a civil, structural & construction engineering consulting firm based in the Midwest delivering planning, design, and construction management services.

Orlando Construction LLC is a full-site development company serving Central Florida. They specialize in excavating and construction services for commercial and residential projects.

ORLAN provides professional crane services, truss setting, and heavy hauling, with over 20 years of experience in the industry. They focus on delivering building trusses, setting payloads, and transporting oversized loads, emphasizing logistical support and customer service.

A full-service construction firm dedicated to providing superior building services, focusing on quality, value, energy efficiency and the protection of natural resources.

Ormaza Construction offers design-build services, specializing in commercial, industrial, and mining projects. They provide complete service from conceptual design to the finished project, focusing on cost-effectiveness and client savings.

Ortman Drilling & Water Services is a full-service water supply contractor, working in all phases of water well/system engineering and installation. They also have an elevator drilling division and an ethanol water resource group.

Osage Electrical Contractors is a Native American owned company specializing in commercial electrical installations. They have an extensive background in the casino/gaming environment as well as entertainment facilities, hotels, and multi-family dwellings.

Osborn Consulting is a collaborative team and trusted partner that delivers practical and creative water and land infrastructure solutions. They specialize in stormwater management, natural resources, open space design, and utilities coordination, with a commitment to sustainable solutions.

Oscar Ladouceur & Son Ltd. is a quality driven mechanical contracting company specializing in the commercial and industrial sectors. They offer in-house turnkey service and specialize in value engineering every job.

OS Construction Services specializes in providing top-tier construction services across various industries. They offer expertise in project planning, design, and execution.

Osman Construction Corporation has a commitment to excellence in construction, emphasizing experience, teamwork, client relationships, and quality. They are involved in general contracting, construction management, and sustainable building practices.

Ossa Terra Ltd. is a locally owned and operated company providing site development, demolitions, contaminated soils-reclamation and remediation, excavations and earthworks, deep utilities, trucking of soils and aggregate materials, and heavy equipment lowboy services.

Ostroff Electric is a construction company based out of 102-15 159th Road Howard Beach, NY

OSTROW ELECTRIC COMPANY was founded in 1939 by John Ostrow. The company has transformed from a single-man shop to one of the leading electrical and telecommunications firms in New England. Now under its third generation of leadership, Ostrow Electric is committed to servicing the electrical industry with the highest installation and safety standards. As a NECA contractor, Ostrow Electric services a wide range of clients in sectors such as Healthcare, Educational, Institutional, Biotech, Commercial, Retail, Technology, and Industrial. They engage with customers from the conceptual budget phase through the bidding or design/build process to value engineering processes. They utilize cutting edge BIM modeling to integrate the design team’s intent into their field crew’s production. Their areas of expertise include security systems, photovoltaic systems, wind turbine generators, electrical infrastructure, fire alarm, clean rooms, and telecommunications.

O.T. Neighoff & Sons, Inc. provides painting, construction, and flooring services, specializing in industrial and commercial applications.

Ott Development, Inc. provides construction services for all types of building projects, including industrial, multi-tenant office buildings, institutional, retail, and religious facilities.

Energy modelling and energy advising for new buildings and renovation projects. We provide EnerGuide ratings and compliance reports, REUP forms, pre-permit checklists and as-built checklists. We also offer heat loss & heat gain calculations for mechanical equipment sizing, and HRV commissioning and balancing. We bring a background of mechanical engineering design to the energy advising role, optimizing mechanical systems to meet step code requirements affordably.

Our Rental Pumps is a WBE certified Equipment Rental Company known for providing an impressive fleet of concrete pumps and telebelts. The company focuses on building trust with major contractors in the New York area and expanding its fleet to include various sizes of Earth Moving Equipment and Screening Plants.

Outdoor Contracting specializes in creating custom-designed outdoor spaces with a focus on engineered drainage systems, high-end colorscaping, and sophisticated landscape lighting. They offer solutions for drainage remediation, retaining wall construction, and comprehensive outdoor transformations.

Outer Beach Marine Inc. is a full-service marine construction company with nearly forty years of experience in the marine construction permitting business in Long Island, NY. They provide help with all aspects of the construction process: site evaluation, construction design, photo presentation, drawings and, ultimately submittal of documents as well as follow up to permit acquisition.

Out of the Park Sports designs and builds indoor and outdoor commercial and residential turf and sporting facilities. They specialize in building top-notch training facilities and outdoor landscapes using premium artificial turf.

Founded in Denver, Colorado in 2011, Outpost Construction Supply is your supply support team for your construction, industrial and job site service needs. We are a family owned business and hold tightly to the idea that the customer comes first and nothing will ever replace a trusting relationship. We bring decades of understanding and experience in the construction industry. Our boots on the ground approach keeps our team in the field, actively listening to people who end the day with their hands dirty, learning what the true needs of the contractor are today. Outpost online leads the way in presenting new and innovative products as well as bringing customers the top brands in construction. We believe that people should come first and pride ourselves in being the most dependable partner to our customers. Our mission is to create a competitive advantage for our customers by delivering products punctually and accurately with service that reflects Biblical values.

Outright Surveying is a Victoria-based Engineering Surveying company established in 2009. They provide precise, efficient surveying solutions.

Overhead Crane Solutions Inc. offers reliable quality servicing of overhead cranes, jib cranes, and associated lifting equipment. Their mission is to remain responsive to customer needs and to assume a key role in the industry by meeting and exceeding industry standards and expectations.

The Overhead Door Co of Boston has been dedicated to supplying superior service and products for over 50 years to the Boston and South Shore areas.