Ottawa General Contractors
“Everyone was wonderful to work with, the different crews in my home were fantastic and my designer Reem was amazing and so helpful steering me to pick out the right selections.”
Best Architects in Ottawa, ON
23 firms listed · all 23 in Ottawa · 2 open 24/7 · 4 open weekends · 18 rated 4.5+
Data verified October 19, 2026
Oakwood Designers & Builders
“New to renovation, we found the design centre extremely helpful - seeing different room designs and arrays of fixtures, flooring, cabinets etc all in one place allows comparison when one-off pictures do not.”
Ha2 Architecture & Design Inc.
“Houry's attention to detail, her ability to help us see what could be, as well as keeping true to our vision helped us renovate a falling down half story house into a full two story home.”
Dustin Design and Drafting
“I enjoyed working with Dustin as he took my ideas and turned them into permit ready drawings in a professional and efficient process.”
Kariouk Architects
“Worked with Paul on their website, they create truly outstanding, world-class homes.”
Moneca Kaiser Design Build
“I am a general contractor and have worked with Moneca and her design team on a few projects and I must credit them for their attention to detail, unique and functional designs, and plan accuracy.”
The 23 firms listed for Ottawa, ON provide architectural services. The building types they take, the services they include and the registrations they claim are taken from their own websites, and the ratings and quotes come from public reviews.
Area overview: Ottawa, ON
All 23 firms we list here are in Ottawa itself. We have 58 firms in Ottawa on file; this page shows the highest-rated 23. The firms on this page are rated from 4.0 to 5.0 across 604 reviews; 2 have 50 or more reviews and 18 are rated 4.5 or higher. When customers rate these firms on specific qualities, they most often praise professionalism (96%), quality (83%) and responsiveness (83%). 2 are open around the clock; 4 are open on Saturdays and 2 on Sundays. 13 have ten or more years of experience, the longest 28 years. 2 offer emergency call-outs; 2 offer financing or payment plans; 2 give free estimates and 1 is family- or locally-owned. We have a website on file for all 23 of the firms on this page; 22 publish a contact page; 21 list a public email and 1 takes bookings online. We count these figures across the firms on this page; hours and prices change, so confirm the details with the firm before you book.
What can an architect's website tell me?
All 23 firms here give a web address. Look for photographs of finished buildings rather than renderings, and for work of your type and scale. A firm that designs schools and a firm that designs laneway houses are answering different questions, and the portfolio usually says which one you are looking at.
Design Hvac Experts Inc
“A great deal of industry experience and a wealth of contacts for extended knowledge and resources on many topics associated with building trades and sciences.”
Kad+
“KAD+ completed a series of projects at my home, including the restoration of an existing structure, the removal of an old chain-link fence, interior room restoration, drywall repair, patch, sand prep wall to be painted and full deck painting.”
J.L. Richards & Associates Limited (Jlr)
“Extremely professional and well managed company.”
Ardington + Associates Design
“From the first meeting to move in Steve and the team were excellent.”
25:8 Architecture + Urban Design Limited
“They worked on a tight budget and made something amazing out of an old garage!”
Linebox Studio
“Andrew and the Linebox team took our 100+ year old house and with their architectural vision transformed it into a stunning contemporary home while at the same time completely respecting its heritage in the neighbourhood.”
ZG Architecture
“Seen in person what dedication this company offers for their clients.”
Architects DCA
“They were extremely knowledgeable, responsive, and incredibly effective at navigating all the city requirements and approvals that could have easily slowed the project down.”
Marco Ianni Architect LTD
“I am in the preliminary phases of working with Marco's firm for a housing project and have been impressed with his professionalism and impressive portfolio.”
P-Squared Concepts Inc.
“If anyone needs any design services Patrick is the one best in Ottawa .”
Shean Architects Inc.
“Shean Architects is an excellent firm with well-balanced design and technical capabilities, making them a pleasure to work alongside.”
Bbb Architects Ottawa Inc.
Neuf Architectes
“Favorite architectural firm in Ottawa, lots of know how which explains why so many developers choose them as their to go firm!”
GRC Architects Inc.
“Plans are always clear with very few addendums needed.”
Erick McEvoy
Urban Keios Design
“Details and an amazing eye for detail - Nick and his team are fantastic and receptive to deal with.”
RJH Architecture + Planning
“Utilizing the spaces most efficiently, I like their thoughts and always trying to accommodate customer concerns”
Why these companies made our list
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