OUR SPECIALTY
Basement Development
Unused square footage becomes legal suites, bedrooms, gyms and entertainment space that add real value to your home.
Start your basementConstruction made easy. Basements made easy.
BUILD YOUR DREAM
BASEMENT
Transforming basements into beautiful, functional living spaces across Calgary, Chestermere, Airdrie, Okotoks and Cochrane.
- LICENSED & INSURED
- PERMITS HANDLED
- FREE LAYOUT & DRAWINGS
- 500+ PROJECTS
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
Everything We Build
Seven services.
One accountable team.
Legal Secondary Suites
Self-contained legal units with private entrance, full kitchen and bath. Long-term rental income or space for family.
ExploreKitchen Renovation
Suite kitchens and full renovations with stone counters, custom cabinets and code-compliant services.
ExploreBathroom Remodeling
Space-saving suite bathrooms and spa-style remodels with premium tile and frameless glass.
ExploreInterior
Design, drywall, painting, flooring, tiling and doors. One team for the whole interior.
ExplorePermits & Approvals
Drawings, applications, inspections and sign-offs. We speak City of Calgary fluently.
ExploreSide Entrances & Egress Windows
Private suite entrances and legally required egress windows, engineered, permitted and installed. The details that make a suite legal, done properly the first time.
ExploreThe Transformation
Bare concrete to
move-in ready
Every project follows the same journey: framing, rough-ins, inspections, finishing. Watch one unfold, then drag the sliders to compare real before and afters from Windrow Manor.
BeforeAfter
BeforeAfter
The Math That Matters
A suite that pays you back, month after month
Calgary's rental demand is strong. A legal basement suite turns your lowest-cost square footage into steady monthly income.
REAL PROJECT
Skyview Ranch Blvd NE
Airbnb legal basement suite, hosting guests and generating income for its owners.
See this projectHow 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.
Why Choose Us
Built on four
promises
HIGH-QUALITY WORKMANSHIP
Finishes that photograph well and hold up to real family life.
ALBERTA CODE COMPLIANT
Every build permitted, inspected and compliant from day one.
TRANSPARENT PRICING
Fixed, detailed quotes. The price only changes if you change the scope.
EFFICIENT & ON-TIME
Clear timelines in your quote, updates at every stage of the build.
FREE CONSULTATION
One Calgary team.
500+ basements deep.
Grains Construction builds basements and legal secondary suites across Calgary and area. We handle everything under one roof: consultation, layout and drawings, permits, construction, inspections and warranty.
About UsProjects We Did
Projects we did
0PROJECTS COMPLETED
0YEARS EXPERIENCE
0PERMIT-READY BUILDS
FREECONSULTATION & DRAWINGS
Reviews
What homeowners
say about us
★★★★★
The whole process was exactly what they promised: consultation, drawings, permits, done. Our walkout suite was rented two weeks after handover.
★★★★★
They handled the city permits and every inspection. We never touched a form. The suite passed final inspection first time.
★★★★★
Our Airbnb basement books solid months ahead. Guests mention the kitchen and bathroom in almost every review.
Do I need a permit to develop my basement in Calgary?
Yes. Structural changes, new electrical or plumbing, added bedrooms or a legal suite all require City of Calgary permits. Grains Construction handles every application, inspection and approval for you, from day one.
What makes a basement suite legal in Calgary?
A legal secondary suite needs its own entrance, kitchen and bathroom, proper egress windows, fire separation, sound control and ventilation, all built to Alberta Building Code and registered with the City of Calgary.
How long does a basement development take?
Most Calgary basement developments take 6 to 12 weeks depending on scope. You get a clear timeline in your fixed quote and we keep you informed at every stage.
Can my basement become a rental or Airbnb?
Yes, and it is our specialty. We have built Airbnb-ready legal basements and long-term rental suites across Calgary, Chestermere and Airdrie, fully code-compliant and ready for tenants.
What does a basement development cost?
Every basement is different, so we quote each project individually after a free consultation with free layout and drawings. Your quote is detailed and fixed. See our pricing page for what drives cost.
How does the $80,000 government loan work?
The Canada Secondary Suite Loan Program offers eligible homeowners up to $80,000 at 2% interest over 15 years to add a legal secondary suite. We check eligibility, prepare documentation and manage the application at no extra charge.
Government Incentive Program
Up to $80,000 at 2% to build your legal suite
The Canada Secondary Suite Loan Program helps eligible homeowners finance a legal secondary suite. We handle the entire application at no extra charge.
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
