Our Specialty
Basement development,
done right.
From bare concrete to income-generating legal suite. One licensed Calgary team for design, permits, construction and inspections.
Quick Quote
Tell us about your project.
We'll do the rest.
Answer a few quick questions and we'll prepare your free consultation, complete with free layout and drawings.
- Takes under a minute
- No obligation, no pressure
- Government program eligibility included
The most valuable
square footage in
your home is downstairs
Your basement is the cheapest space you will ever add to your home: the foundation, walls and roof already exist. Basement development turns that unused footprint into bedrooms, bathrooms, offices, gyms and legal rental suites.
Grains Construction has completed 500+ projects across Calgary, Chestermere, Airdrie, Okotoks and Cochrane. Every build is planned with detailed layout drawings before work starts, fully permitted with the City, inspected at every required stage and backed by our workmanship warranty.
- FAST TURNAROUND
- CUSTOM LAYOUT DESIGN
- STRESS-FREE PERMITTING
- TRANSPARENT PRICING
What's Included
Everything, handled
Free Layout & Drawings
See your basement before we build it, walls, kitchen, lighting and finishes.
Permits Handled
Development and building permits, inspections and approvals managed for you.
Full Construction
Framing, electrical, plumbing, HVAC, drywall and finishing by licensed trades.
Income-Ready
Suites built rental-ready and Airbnb-ready, to code, from day one.
6 to 12 Weeks
A clear timeline in your quote, with updates at every stage.
Warranty Backed
Workmanship warranty and a team that stays a phone call away.
Basement Types
What kind of basement
are you dreaming of?
Legal Secondary Suites
Self-contained legal units with private entrance, kitchen and bath. Long-term rental income or space for family.
Explore
Airbnb Legal Basements
Short-term-rental-ready suites, furnished-friendly layouts, built and registered to Calgary code.
Explore
Legalize an Existing Basement
Bring a finished basement up to code and register it as a legal suite. Calgary only.
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Basement Renovation
Refresh a tired or outdated basement with new finishes, smarter layout and modern systems.
Explore
Wet Bars & Basement Kitchens
Entertainment basements, wet bars, in-law setups and full code-compliant suite kitchens.
Explore
Projects We Did
Projects we did
How It Works
A process with no surprises
-
01
FREE CONSULTATION & VISIT
We visit your home, discuss your goals and measure the space, free of charge.
-
02
FREE LAYOUT & DRAWINGS
Your layout and drawings prepared free, so you see the plan before you commit.
-
03
PERMITS & APPROVALS
City of Calgary applications and approvals handled for you from day one.
-
04
CONSTRUCTION & ROUGH-INS
Framing, electrical, plumbing and HVAC by licensed trades, with a rough-in walkthrough.
-
05
INSPECTIONS & FINISHING
City inspections at every required stage, then drywall, paint, flooring and the details.
-
06
WALKTHROUGH & WARRANTY
Final walkthrough together, backed by our 1-year workmanship warranty.
How much does basement development cost in Calgary?
Every basement is different, so we quote each project individually after a free consultation with free layout and drawings. Your quote is fixed and detailed. With Calgary rental demand and the $80,000 federal loan program, a legal suite often pays for itself.
Do I need a permit to develop my basement in Calgary?
Yes. Adding bedrooms, bathrooms, electrical, plumbing or a suite requires City of Calgary permits. We prepare drawings, submit applications and manage every inspection for you.
How long does basement development take?
Most projects take 6 to 12 weeks depending on scope. Legal suites with new side entrances sit at the longer end; simple developments finish faster.
Can you build my basement as a legal rental suite?
Yes, that is our core specialty. Private entrance, egress windows, fire separation, sound control, kitchen and bath, all built to Alberta Building Code and registered with the city.
Do you serve Chestermere and Airdrie?
Yes. We build across Calgary, Chestermere, Airdrie, Okotoks and Cochrane, and have completed walkout and rental suites in all three.
Ready to start? Get your free consultation, layout and drawings.
Quick Quote
Tell us about your project.
We'll do the rest.
Answer a few quick questions and we'll prepare your free consultation, complete with free layout and drawings.
- Takes under a minute
- No obligation, no pressure
- Government program eligibility included
