The Bedroom Question: 1BR vs 2BR
One of the biggest decisions you’ll make when planning a basement suite is bedroom count. Do you go with one bedroom or two? The difference isn’t just about square footage-it’s about rental income, cost, and resale appeal.
I’ve seen Calgary homeowners make both decisions and regret them. Too often, they optimize for cost and build a 1BR when a 2BR would have paid for itself. Other times, they over-build when a 1BR was all they needed.
Let’s break down the real numbers.
Cost Difference: 1BR vs 2BR
A single-bedroom basement suite in Calgary typically runs $45,000 to $55,000 for a full build-out (600 to 700 sq ft).
A two-bedroom suite costs $65,000 to $85,000 (800 to 1,000 sq ft).
The difference? $20,000 to $30,000 additional cost, or about $35 to $40 per square foot.
OAF Data: What Drives the Cost Difference
Extra bedroom: ~$8,000 to $12,000 (framing, drywall, paint, flooring)
Larger HVAC ductwork: ~$3,000 to $5,000
Additional plumbing: ~$2,000 to $3,000 (extra washroom fixtures)
Egress window (if required): ~$4,000 to $6,000
Electrical (more outlets, circuits): $2,000 to $3,000
Overall project management & permits: Minimal change ($500 to $1,000)
Rental Income Comparison
This is where the equation flips.
In Calgary, a 1-bedroom basement suite rents for $1,200 to $1,500/month (2026 market rate).
A 2-bedroom suite rents for $1,600 to $2,100/month.
That’s an extra $300 to $600 per month-or $3,600 to $7,200 annually.
| Suite Type | Build Cost | Monthly Rent | Annual Income | 5-Year Income | 10-Year Income |
|---|---|---|---|---|---|
| 1-Bedroom (650 sq ft) | $50,000 | $1,350 | $16,200 | $81,000 | $162,000 |
| 2-Bedroom (900 sq ft) | $75,000 | $1,850 | $22,200 | $111,000 | $222,000 |
| Difference (2BR) | +$25,000 | +$500 | +$6,000 | +$30,000 | +$60,000 |
“The 2-bedroom pays back its extra cost in 4 years of rental income. After that, it’s pure profit.”
ROI Analysis: When Each Makes Sense
Build a 1-Bedroom If:
- Your basement space is tight (under 700 sq ft)
- You only need $500 to $800/month to break even financially
- The suite is primarily for aging parents or adult children (not rental)
- You want to minimize upfront cost ($45K vs $75K)
- Local renters demand studio/bachelor over family units
Build a 2-Bedroom If:
- You have 850+ sq ft of basement space
- You plan to rent long-term (10+ years)
- You want maximum rental income (families prefer 2BR)
- You care about future resale value
- Upfront capital isn’t your constraint
- You want more flexibility (rent as family unit OR individual rooms)
Resale Value Impact
This is where many Calgary homeowners overlook the 2-bedroom advantage.
A home with a 2-bedroom legal suite is worth $30,000 to $50,000 more than one with a 1-bedroom, all else equal. Buyers see rental income potential. They see flexibility.
A 1-bedroom suite? It’s valued more conservatively. Some buyers skip it entirely.
Over 10 years, the 2-bedroom pays for itself through rent AND gives you a $40,000 resale boost. That’s powerful.
OAF Recommendation
If your basement is 800+ sq ft and you can afford the extra $20 to $30K, build 2BR. The ROI math wins. If you’re basement is under 700 sq ft or budget is tight, 1BR is smart. But don’t let a $25K difference stop you if the space exists-it pays for itself.
FAQ
Can I start with 1BR and upgrade to 2BR later?
Technically yes, but it’s expensive. You’d need to reconfigure plumbing, electrical, ductwork. Plan it right the first time. Add the extra framing and rough-ins during initial construction-finishing can always wait.
Do 2-bedroom suites rent faster?
Yes. In Calgary, families actively seek 2BR suites. Vacancy for 2BR is typically 3 to 6 months. 1BR can sit 6 to 9 months. Larger pool of renters = less downtime.
What if the bedroom is very small?
A bedroom must be minimum 70 sq ft to meet code. Anything smaller won’t legally count as a bedroom. Make sure your second bedroom is 80+ sq ft to attract families.
Do I need 2 bathrooms?
For a 2BR suite, one full bathroom + one powder room is acceptable. Two full baths is ideal but not always necessary. With only 1 full bath, expect slightly lower rent (10 to 15%).
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