Planning a legal basement suite in Calgary? ARK Construction can assess the existing basement, identify major design and safety considerations, and coordinate permits, construction and inspections for the approved project.Planning a secondary suite in Calgary? ARK Construction can help compare legal basement, backyard and garage-suite options and coordinate design, permits, construction and inspections for your property.

ARK Construction plans and builds legal basement suites for Calgary homeowners. This service is specifically for creating or upgrading a self-contained dwelling inside an existing basement—not simply finishing the basement for household use.
Some projects begin with an unfinished basement; others involve an existing suite that may require changes. The work needed depends on current conditions, records, approved plans and the requirements identified during municipal review.
Requirements may involve zoning, safe access, emergency egress, ceiling height, fire separation, sound control, ventilation, electrical and plumbing work, smoke and carbon-monoxide alarms and other building-code considerations. Consult the City of Calgary permits page for current guidance. Final decisions rest with the relevant authorities.
Cost depends on existing conditions, suite size, structural changes, window or entrance work, plumbing and electrical upgrades, heating and ventilation, permit review and finish selections. A property assessment is required before providing an estimate.
For a finished basement without a separate dwelling, see our basement renovation service.
Request a legal basement suite consultation for your Calgary property.
An ADU is an additional self-contained living space on a residential property. In Calgary, the applicable category and requirements depend on whether the suite is in the main home, a garage or a detached backyard building.
ARK can plan and build detached backyard or garden suites, garage and carriage suites, and legal basement suites. The suitable option depends on the property, design and required approvals.
Utility arrangements vary by suite type, existing services, design and approval requirements. We review servicing needs during planning and coordinate the applicable work within the project scope.
Yes. Layout, finishes, storage and accessibility features can be tailored to the property, household needs, budget and approved design.
Cost depends on suite type, size, structural and foundation work, site access, utilities, permit requirements and finish selections. A property-specific review is needed before ARK can provide an estimate.
Permit and approval requirements depend on the property and suite type. ARK can help identify and coordinate the applicable design and submission steps, while final decisions remain with the relevant authorities.

Professional Calgary construction company offering commercial construction, home building, basement development, and renovations.