Hire a Legal Suite Contractor Calgary Owners Actually Trust
OAF Construction is a Calgary legal suite contractor with 200+ completed secondary suites, a 4.9★ HomeStars rating with Best of HomeStars 2024 & 2025, and a fixed-price contract on every job. We are licensed with the City of Calgary, WCB covered, $5M liability insured, and registered with the Secondary Suite Incentive Program. If you have already decided to build a legal suite and you are now choosing the contractor, this page is for you. The cheapest quote is rarely the best quote. Here is how to vet a legal suite contractor Calgary properly.
Non-Negotiables When Hiring a Legal Suite Contractor
A legal suite is one of the most regulated residential builds in Calgary. The contractor you choose must hold every one of these credentials. If they cannot produce documentation on request, walk away.
- City of Calgary business licence (current, in good standing)
- WCB Alberta coverage for every worker on site, not just employees
- Commercial general liability insurance of at least $2M (we carry $5M)
- SSIP registration if you want the $10,000 grant
- Trade certifications for electrical (Master Electrician on staff or sub) and gas (B-pressure or higher)
- Fixed-price contract in writing, with payment schedule tied to milestones
- Written warranty of at least 60 months on workmanship
OAF meets every one of these. We will hand you the documentation in your free consultation, before you sign anything.
Red Flags in Legal Suite Quotes
The Calgary legal suite market attracts inexperienced contractors because the demand is high. Watch for these warning signs:
- “Time and materials” instead of fixed price. Translation: the final number is unknown.
- No mention of permits in the quote. They expect you to pull permits yourself, which voids most homeowner insurance during construction and risks an illegal suite.
- Vague allowances (“$3,000 for plumbing fixtures”). Real contractors quote specific products.
- Cash discounts. Indicates no GST registration, no WCB, no insurance.
- No mention of SSIP. They are not registered, so you forfeit the $10,000 grant.
- No fire separation line item. This is a code requirement. If they did not quote it, they did not plan it.
- Door-knocking or unsolicited bids. Reputable Calgary contractors have a waitlist.
For more detail, read our breakdown of contractor red flags before signing anything.
What OAF Includes That Most Calgary Contractors Skip
| Line Item | OAF Standard | Typical Competitor |
|---|---|---|
| Permits (Development + Building) | Included, we file | ”Owner responsibility” |
| Engineered drawings | Included, stamped | Often “extra” |
| Fire separation | Included | Sometimes skipped |
| Egress windows | Quoted line-item | Often allowance |
| HRV / mechanical balance | Included where required | Frequently missed |
| SSIP grant application | We file it | Not registered |
| Occupancy inspection | Included, we attend | Owner attends alone |
| Workmanship warranty | 60 months | 0 to 60 months |
This is why two quotes can differ by $20,000 on the same scope. The cheaper number usually has half the deliverables.
OAF’s Legal Suite Contractor Process
- Free on-site consultation. 30 to 45 minutes. We measure, we walk the basement, we discuss layout, we run a Land Use Bylaw check on your address.
- Fixed-price proposal. Within 5 to 7 business days. Detailed scope, line items, payment schedule, exclusions clearly stated.
- Contract signing and design. We finalize drawings with our in-house designer. You approve before we submit permits.
- Permit submission. OAF files Development and Building Permits with the City of Calgary.
- Construction. Our in-house framing crew starts. Trade partners (plumbing, HVAC, electrical) arrive on a published schedule.
- Inspections. OAF schedules and attends framing, insulation, electrical, plumbing, gas, and final occupancy inspections.
- Handover and SSIP claim. Final walkthrough with you, deficiency list closed, SSIP application filed.
You receive weekly updates with photos. Your project manager is reachable by text seven days a week.
Why OAF Construction
- 200+ Calgary legal suites delivered since 2018. We have seen every basement type, every zoning district, every City inspector.
- Fixed-price guarantee. The number you sign is the number you pay. No “unforeseen conditions” upcharges.
- In-house team. Framers, finishers, and project managers are T4 employees on staff. Not contractors we met on Kijiji.
- WCB + $5M liability + Calgary business licence. We carry the paperwork that protects you.
- Calgary specialists. We do not chase work in Edmonton or Lethbridge. Calgary is what we know.
Frequently Asked Questions
How do I verify a Calgary contractor’s licence? Search the contractor’s legal name at calgary.ca/business-licence-search. The licence must be current and in the “Construction Services” category. Cross-reference with WCB Alberta’s online clearance check at wcb.ab.ca to confirm coverage. Both checks take under five minutes. OAF is happy to walk you through the lookup live during your consultation.
Why is the OAF quote higher than my $40K bid? Because the $40K bid almost certainly excludes permits, engineered drawings, fire separation, egress windows, mechanical balance, or all of the above. When you add those back, the bids are usually within 5 percent. Read every line of every quote. We will go through ours line by line with you.
Can OAF take over a stalled legal suite project from another contractor? Yes, sometimes. We assess each takeover individually. We will inspect the work in place, identify code deficiencies, and quote completion as a fixed-price scope. Be aware that fixing another contractor’s framing or rough-in often costs more than starting fresh. We will tell you honestly which option is cheaper.
What does the SSIP registration actually mean? The Secondary Suite Incentive Program requires the contractor to be registered with the City of Calgary as an SSIP builder before applying for the $10,000 grant on your behalf. Owner-applied grants are also possible, but a registered builder simplifies the documentation. OAF has filed SSIP claims on eligible projects since the program launched, with a consistent approval track record.
Do you offer financing for legal suite construction? OAF does not offer in-house financing. Most clients use a HELOC or a cash-out refinance. Some use the Canada Greener Homes Loan ($40,000 interest-free) for envelope upgrades on the basement. We can recommend a Calgary mortgage broker who specializes in renovation financing during your consultation.
Are you available for 2026 starts? Yes, with limited spots. Our 2026 build calendar usually fills 6 to 10 weeks ahead. Booking a consultation is non-binding. It locks your assessment date and gives you a real fixed-price quote you can compare against any other legal suite contractor Calgary offers.
Related OAF Resources
- Legal Suite Development service
- Contractor red flags: what to watch for in Calgary
- Legal vs illegal suites: what Calgary owners need to know
- SSIP grant eligibility and details
- How much does a legal basement suite cost in Calgary in 2026?
Get a Free Quote
Skip the four-quote shuffle. Book a 30-minute consultation with OAF, hand us your address, and walk away with a fixed-price proposal that includes permits, fire separation, mechanical, and the SSIP grant filing. Calgary’s most reviewed legal suite contractor is one click away.