Professional General Contracting Services in North America

At A & O Contracting Inc. we take pride in offering general construction services in North America and delivering exceptional workmanship to several industry sectors. We meet and exceed industry standards for the industrial, commercial, institutional, and residential markets. Whether it is a small or large construction or renovation project we accommodate the needs of all our clients. We cover the full spectrum of construction trades allowing us to be an all in one service centre for our clients leaving them piece of mind that the job is complete. Between our in-house experts and vast network of trades there is no service we are unable to provide.


As a contractor already performing environmental abatement and disaster restoration services you can be sure to get the highest level of performance with A & O Contracting Inc.’s demolition services. Our workers are trained to handle high-risk abatement and demolition projects making sure you get the highest safety standards and infection control standards available. With competitive prices and customized estimating, we can handle whatever you throw at us!

Project Management

A & O Contracting Inc. has built an extensive network and team over the years of experts in all aspects of construction. With this network of resources available to us we can offer professional, customized, and innovative construction management services to our customers. No matter the size or complexity let A & O Contracting Inc. help you to bring your ideas to life!

All the Trades You Need with One Point of Contact

The team at A & O Contracting Inc. has spent the last 20 years developing an extensive network of trades and team members that are the best in their field in order to deliver a high level of service and convenience to our customers. Whether it’s a renovation, restoration or new construction, we have the services and trades available to get your project done! Contact us today.

  • Electrical

  • Plumbing

  • Mechanical

  • Elevators/escalators

  • Windows/ doors

  • Drywall

  • Insulation

  • Flooring

  • Framing

  • Painting

  • Demolition remediation /abatement

  • Millwork

  • Glazing

Maintenance Services

Whether you’ve got a leaky faucet or a plugged drain, our team can fix it. We provide routine and reactive maintenance work that can add value to your property. From HVAC and refrigeration to plumbing and electrical work, our workmanship is one of the best in Ontario. Depending on your requirement, the appropriate technician will be sent to your location.

Disaster Restoration Services

Call us for any inquiries.

Contact Us

A & O Contracting Inc.

Unit 6 -2355 Royal Windsor Dr

Mississauga, ON L5J 4S8

 - 1-866-244-6144

Fax - 905-855-1744

Other Phone Numbers

24-Hour Emergency Service

Toll-Free: 1-866-244-6144

Office Hours

Monday - Friday

09:00 AM - 05:00 AM

Operations: 24/7

Service Area


United States of America


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