Basement Renovation
Basement renovation & legal suite construction in Metro Vancouver — waterproofing, permits, fire separation, separate entrance. 2026: $50K–$200K typical, premium legal suites with full ensuite $250K+.
Metro Vancouver basement renovations — from finishing an unfinished space to a fully legal secondary suite with separate entrance, full kitchen, and ensuite. We pull permits, handle fire-separation and egress requirements, coordinate the inspection schedule, and deliver a code-compliant, rentable space.
Every basement project includes a written scope, fixed-price contract, BC Building Code §9.36 (low-rise residential) permit package, fire-separation per §9.10, $5M CGL, WorkSafeBC, and our 3-year workmanship warranty.
Real Vancouver Basement Costs (2026)
| Tier | Scope | Total Investment |
|---|---|---|
| Basic finishing (no kitchen / bath) | Drywall, electrical, lighting, flooring, paint, baseboards, optional rec room | $50,000 – $90,000 |
| Finishing + 1 bathroom | Above + 3-piece bathroom rough-in + finish | $80,000 – $130,000 |
| Legal secondary suite (1 bed) | Full kitchen, 3-pc bath, separate entrance, fire separation, egress windows, separate panel | $130,000 – $200,000 |
| Legal suite (2 bed) + ensuite | Above + 2 bedrooms with code-compliant egress + premium finishes + ensuite for primary | $180,000 – $280,000 |
| Premium suite + entertainment area | Wet bar, theater room, gym, sauna, premium finishes throughout | $200,000 – $350,000+ |
What's Included
1. Pre-construction
- Existing-conditions assessment (moisture, ceiling height, wiring age)
- BC §9.36 + §9.10 code review
- Permit package (City of Vancouver / Surrey / Burnaby — varies by jurisdiction)
- Structural assessment if low ceilings (raising the basement floor)
- Soundproofing planning (especially for legal suites above bedrooms)
2. Critical Code Items (Included in every legal suite)
| Item | What it does |
|---|---|
| Fire separation between units | 5/8" Type X drywall on ceiling + smoke-sealing penetrations |
| Interconnected smoke + CO alarms | Hardwired throughout both units |
| Egress windows in bedrooms | Min 0.35 sq m clear opening, 0.55m wide, sill ≤ 1m above floor |
| Separate entrance | Direct from outside, no shared corridor with main unit |
| Separate panel + meter (sometimes) | Permits separate billing |
| Sound transmission rating STC 50+ | Floor/ceiling assembly between units |
| Ventilation per BC §9.32 | Bathroom + kitchen exhaust direct to exterior |
| Heat source | Independent thermostat OR shared with proper zoning |
3. Waterproofing
| Issue | Solution | Added cost |
|---|---|---|
| Existing damp or musty smell | Interior dimple board + drainage to sump | $4K–$12K |
| Active leak / efflorescence | Interior + spray foam + dehumidifier system | $6K–$18K |
| Major moisture / failed exterior membrane | Exterior excavation + new waterproofing | $25K–$60K |
| Slope grading toward house | Re-grade + downspout extensions | $1K–$3K |
4. What Drives Price Up
- Low ceiling (under 7 ft) → underpinning to lower floor: +$30K–$80K
- Knob-and-tube rewire: +$10K–$25K
- Asbestos in popcorn ceiling / pipe insulation: +$5K–$25K
- Egress window cut in concrete: +$3K–$6K each
- Separate panel + service for suite billing: +$4K–$8K
- Underpinning for additional ceiling height: +$30K–$80K
- Fire suppression (some jurisdictions require for legal suite): +$8K–$15K
5. Timeline
| Scope | Duration |
|---|---|
| Basic finishing | 6–10 weeks |
| Finishing + bath | 8–12 weeks |
| Legal 1-bed suite | 12–18 weeks |
| Legal 2-bed + ensuite | 16–22 weeks |
6. Why Our Floor is $50K and Not $35K
Below $50K in 2026 Vancouver, you're either:
- Skipping permits (puts your home insurance at risk and kills resale value of any rental income)
- Cutting fire separation / egress (illegal as a suite, dangerous to occupants)
- Using uninsured trades
We do permitted, code-legal basements. The $50K floor reflects 2026 BC trade rates + permit cost + minimum code-compliant materials.
7. Free In-Home Quote
Basement projects start with a 90-minute walkthrough — moisture check, ceiling-height measurement, electrical age assessment, scope discussion, and a written estimate.
What We Do
Why Us
Our Projects
Explore our portfolio of exceptional renovation projects across the Lower Mainland.
Frequently Asked Questions
Do I need a permit to finish my basement in Vancouver?+
Yes, basement finishing requires building permits in Vancouver. We handle all permit applications and inspections as part of our service.
How do you handle basement moisture issues?+
We assess moisture levels and implement appropriate solutions including drainage improvements, vapor barriers, and proper insulation before finishing.
Can I add a bathroom to my basement?+
Yes, we can add bathrooms to basements. If below the sewer line, we install sewage ejector systems. All plumbing meets Vancouver building codes.
Get a Quote for Basement Renovation
Let us transform your vision into reality with 20 years of experience.
