Do I Need A Structural Engineer For A Detached Garage In Calgary?

Do I Need A Structural Engineer For A Detached Garage In Calgary?

Yes, you may need a structural engineer for a detached garage in Calgary, depending on the size, complexity, foundation requirements, and proximity to other structures. Engineering is often required for permit approval, especially if your garage exceeds certain dimensions, includes a loft or secondary suite, or is built on sloped or unstable soil. At Calgary Structural Engineers, we design safe, compliant garage structures tailored to your property.

Detached Garages in Calgary: What's Involved?

What Counts as a Detached Garage?

A detached garage is a freestanding structure separated from the main house, often used for vehicle storage, workshops, or secondary units. They vary in size, design, and function.

Why Engineering May Be Needed

Engineering ensures your garage is structurally sound, especially when the build includes:

• Two-storey construction or lofts
• Secondary suites
• Unusual site grading
• Proximity to property lines
• Complex foundation or roof structures

When Does Calgary Require a Structural Engineer for Detached Garages?

Building Code and Permit Triggers

• Area Over 55 m² (592 sq ft): Larger garages often require an engineer
• Loft or Suite Additions: These require structural analysis
• Soil or Grade Issues: Sloped or unstable soil may require foundation design
• Design Complexity: Non-standard trusses, spans, or materials trigger engineering
• Garage Adjacent to Other Structures: Proximity to homes or fences affects requirements

Permit Types and Documentation

• Development Permit: Needed for location-specific issues (e.g. height, setbacks)
• Building Permit: Needed for most garages, especially over 10m² (107 sq ft)
• Engineered Drawings: Required for structural approval
• Schedule B Letter: Confirms engineer accountability
• Inspections: Conducted to verify structural elements match approved plans

What Our Structural Engineers Provide

Site Review and Consultation

We evaluate site access, soil conditions, zoning regulations, and grading to assess the project scope.

Custom Structural Design

We create engineered drawings, including:

• Foundation and footing specifications
• Framing, roof, and wall construction
• Load calculations
• Structural connections and materials

Permit Assistance and Coordination

We help you navigate the permitting process, working with architects, contractors, and city officials.

Benefits of Hiring a Structural Engineer for Your Detached Garage

Peace of Mind

Our designs are built to last. We help avoid sagging roofs, cracking slabs, or foundation failure.

Code Compliance

We design to Alberta Building Code and City of Calgary bylaws, ensuring faster permit approvals.

Added Property Value

Engineered garages are more appealing to buyers and appraisers.

Long-Term Savings

Well-designed structures reduce maintenance, insurance risk, and costly corrections.

What Happens If You Don’t Hire an Engineer?

Permit Delays or Denials

The City may reject plans lacking structural details, delaying your build.

Risk of Structural Failure

Improper framing or footing design may lead to long-term damage or collapse.

Liability and Insurance Issues

An unpermitted or unengineered garage could affect coverage or resale.

6 Common Questions About Detached Garage Engineering in Calgary

Can I build a garage without a structural engineer in Calgary?
You might not need one if it’s under 55 m², on flat land, and without a loft—but most garages benefit from engineering.

Is engineering required for a two-storey garage?
Yes. Additional levels introduce complex loads, requiring structural analysis and stamped drawings.

What does a structural engineer do for a garage build?
We provide soil evaluation, load calculations, engineered drawings, and permitting support to ensure safety.

How much does it cost to hire a structural engineer for a detached garage?
Costs range from $1,200–$3,000 depending on size, complexity, and soil conditions. We offer custom quotes.

Does the City of Calgary inspect detached garages?
Yes. For permitted garages, inspections ensure compliance with approved structural designs and code.

Can I add a loft or suite later without engineering?
No. Any structural modification (including lofts, suites, or increased loads) requires updated engineering approval.

Final Thoughts

So, do you need a structural engineer for a detached garage in Calgary? If your project involves a large footprint, complex design, lofts, or tricky soil conditions—the answer is yes. Structural engineering ensures safety, avoids delays, and increases long-term value.

Calgary Structural Engineers is a trusted choice for residential structural engineering services in Calgary, Alberta. You can request a quote by calling us or requesting one online:

Request A Quote Online: https://calgarystructuralengineers.ca/request-a-quote

Call Us For A Quote: (587) 355-2031

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