St. Catharines’ Professional Building Contractors

St. Catharines’ Professional Building Contractors

Build your dream space with new construction and custom designs from Harper Construction - a family-owned and –operated company based in Southern Ontario. With over 50 years of experience in the construction industry, we strive to provide seamless, transparent and quality construction services to our clients. Our reputation has been built on our commitment to our clients by providing them with quality workmanship that is accomplished on-time and within budget. Whether you are planning to build a new commercial space or wish to expand your largescale industrial space, count on the expertise of our building contractors in St. Catharines for precise and exceptional results. Schedule a consultation with us!

Why Choose Us?

When you hire us for your construction project, rest assured that you are not only hiring us to construct your building but also hiring a team member for life. We are committed to being there for you and for the life of your building. We take great pride in getting a lot of work via word of mouth and contract bidding. Take a look at some of the reasons why you should choose us:

  • Five decades of industry experience

  • Client-centred business

  • Design-focused

  • Quality workmanship and transparency

  • Budget-friendly services

  • On-time delivery

Our Services

From design and new builds to renovations and custom-builds, we have the experience in handling projects for a range of clients including:


        Auto shops




        Land developers



        Apartment complexes

Our additional contracting services include:

  • Renovations/remodelling

  • Drywalling

  • Plumbing

  • Electrical

  • HVAC

  • Excavation

  • Roofing

  • Siding

  • Decks and fencing

  • Masonry

We're here to support you throughout your entire home improvement or development process, and give you the peace of mind you deserve! Our team of expert architects can help understand your ideas and work towards turning your vision into life. Ready to get started? Contact us to schedule a design consultation with our team.

Promotions and Special Offers

Free Consultations

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We Care about Your Plan

Our building contractors are approachable, pay attention to your needs and find a solution to execute your vision.

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It’s Time to be Proud of the Place You Live-in

Whether you’re planning an addition or a renovation project, we can help take your ideas on paper and bring them into reality.

Residential Projects
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Handling Your Project from Start to Finish

We offer consultations for design services and provide options that focus on your style and personal taste.


Harper Construction
13 Hiscott St
St. Catharines, ON

L2R 1C7



Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM


St. Catharines and surrounding areas


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