in Deck Building & Design
Our Ottawa deck builders have built hundreds of decks of various shapes and styles, and are excited to share our knowledge of what’s possible and popular.
We have the experience, knowledge and skills to do every project the right way: on-time, on-budget and to the highest standards.

A City Porches Company


We stand behind the quality of our work with a warranty on labour for 1 full year.


Our technicians are clean, professional, polite and fully covered by insurance and WSIB.

Up-Front Pricing

We supply free comprehensive, written estimates that are clear and concise.

Deck Building Services

Deck Materials & Info

Do you have questions about which type of deck is right for you? Learn about the different deck materials we work with including: Pressure Treated Decks, Cedar Decks, and Composite Decks.

Deck Features & Solutions

Gillespie Decks specializes in a variety of deck features to make your deck the best that it can be, including: Deck Stairs, Pergolas, Privacy Walls, and Deck Railings.

Need a New Deck, Porch or Patio?
Contact us to schedule a free in-home consultation.

Customers Reviews

We were off all last week, and having the new deck was definitely a great way to enjoy the vacation. Absolutely phenomenal job on it, it looks incredible, and you guys were absolutely great to deal with. We’ll definitely be referring you to anyone who’s interested in having work done!
The new porches at my place look FANTASTIC. Thank you very much for a job well done, we love it. Very happy customer, will tell our friends and neighbours.
I had a small job to do on my deck and this firm did an excellent job. They are very professional and were a pleasure to deal with. I will use them again in the future and have already recommended them to my neighbor.