Calgary · Airdrie · Chestermere
Basement Development Calgary
Make room for the way you want to live.
A basement for family, entertaining or time to yourself. Drawings, permits and the build — handled through one point of contact.
Request A Free EstimateWe’ll call you within one business day.
Care that continues after the build.

Made for your downstairs
More room. More possibilities.
A home theatre for movie nights. A gym that fits your routine. An entertainment room with a wet bar. Tell us how you want to use your basement, and we’ll work through the layout and scope with you.


Your plans. Our starting point.
- Home theatres & entertainment rooms
- Home gyms & personal spaces
- Wet bars & saunas
Tell us what you have in mind. We’ll help you work through the scope.
A clear way forward
Know the next step.
Before work begins.
- 01
Start with a conversation.
Tell us what you’re planning. We’ll discuss your project and a rough price range over the phone.
- 02
Walk through your space.
A site assessment gives us a closer look at your basement and what the project involves.
- 03
Review a written quote.
Receive a detailed written quote within 24 to 48 hours after the site visit.
From an Onyx customer
“The workmanship was excellent, communication was clear, and the project was completed with care.”
James Morgan Google review
Before you begin
A few good questions.
Clear answers for your next step.
Can you develop a basement for personal use?
Yes. Onyx develops and renovates basements for personal use, including home theatres, gyms, entertainment rooms, wet bars and saunas.
Who handles the drawings and permits?
Onyx handles drawings, permits and city correspondence for your project.
How much will my basement cost?
We’ll discuss a rough range on the phone, assess your space and prepare a detailed written quote. The scope of your basement determines the quote.
Where do you work?
These estimates are available for basement projects in Calgary, Airdrie and Chestermere.
Request your free estimate
Your next chapter starts downstairs.
Tell us a little about your plans. We’ll call you within one business day to discuss your project and the next step.
Prefer to speak with us? (403) 244-2156
Serving Calgary, Airdrie & Chestermere.
