About Us

Your Trusted Partner for Quality Windows and Doors


Years of Experience in the Industry


Member of Fenestration Canada, SAWDAC and Gentek Premium Renovator

In-House Team

No Sub-Contractors

For over five decades, we’ve been enhancing homes throughout the GTA and beyond. Our extensive experience ensures impeccable results, while our affordable prices make your vision a reality.

Custom Window Designs proudly holds membership in Fenestration Canada (formerly CWDMA), an esteemed organization that plays a significant role in setting industry standards and promoting excellence. Additionally, we are a registered member of the Siding and Window Dealers Association of Canada (SAWDAC), which places stringent demands on its member dealers and contractors.

At SAWDAC, the priority is to ensure that quantity never compromises quality. They believe in the importance of safe, trustworthy windows as a crucial investment in making your space feel more like home. We share this commitment, providing cost-effective, high-quality, and dependable products not only in the GTA but across Canada.

Custom Window Designs takes pride in our direct approach, employing absolutely no sub-contractors. All our dedicated professionals are our own employees, giving us full control to guarantee top-notch quality and efficiency, translating to both time and cost savings for you.

Our team collectively boasts over 150 years of experience in custom fabricating and installing our products. We are esteemed Gentek Premium Renovator Gold Club members. With no reliance on sub-contractors, our fully-trained installation specialists ensure the highest quality workmanship to complete your project.

Client Reviews

We take great pride in the glowing reviews from our customers! Their feedback is a testament to the outstanding service and superior quality products we consistently deliver. Our team values transparency and is committed to offering reliable, honest service to each client. We invite you to read through our customer reviews to understand why they repeatedly choose us for their exterior product requirements.

Dejan Dojcinovski


Very satisfied with work done.
Peter from Custom Window Designs came highly recommended from a friend and he delivered beyond our expectations.
He helped us with design from start to finish and we love our new windows and doors and finished sunroom.

Rob Servos


We recently had a Sliding deck door and basement windows installed by Custom window Designs. Peter and John were great to deal with and the installation was quick and efficient. Everything looks great.



Custom window designs supplied and installed all of my windows and doors at my home and I couldn’t be happier with everything! Peter was extremely knowledgeable and his staff were very professional , from the initial quote to the final product I would highly recommend Custom Window Designs to anyone looking to replace there windows and doors!

Google rating score: 4.4 of 5, based on 24 reviews

Discover the Custom Window Designs Advantage

50 Years Experience

Leverage our half-century legacy in the industry, where seasoned expertise meets unparalleled craftsmanship in every window and door project

Manufacture & Install

Benefit from our end-to-end service as we not only manufacture but also expertly install ensuring quality control and lower costs

Financing Available

Ease your investment with our flexible financing options, designed to make our premium window and door solutions accessible for every budget

Lifetime Warranty

Rest easy with our lifetime warranty, offering you enduring security and trust in the lasting quality and performance of our products