Project Overview
In Prince George, British Columbia, where rugged terrain and extreme northern climates define many properties, transforming a sloped backyard into a functional outdoor oasis requires innovative engineering and local expertise. This case study examines a recent two-level deck project completed by PG Home Solutions, a leading renovation company specializing in decks, fences, and outdoor structures. The homeowner faced a steep grade drop of approximately 8 feet from the house to the yard, limiting usable space for gatherings, relaxation, and play. The solution: a multi-tiered deck system maximizing square footage while adhering to BC Building Code requirements for snow loads, frost protection, and seismic considerations.
The upper level extended directly from the patio doors, providing seamless indoor-outdoor flow, while the lower level created a spacious entertainment area. Total footprint: upper deck at 20 ft x 16 ft (320 sq ft) and lower deck at 24 ft x 12 ft (288 sq ft), connected by a wide staircase. This design not only resolved the slope issue but also enhanced property value in Prince George's competitive housing market, where outdoor living spaces are prized despite long winters.
Site Assessment and Challenges
Initial evaluation revealed classic northern BC challenges: heavy clay soil prone to shifting, a 25-degree slope, mature trees requiring preservation, and exposure to FortisBC region winds and snowfall exceeding 200 cm annually. Soil tests confirmed moderate frost depth (around 4-5 ft per BC codes), necessitating deep footings to prevent heaving.
Key challenges included:
- ✓Drainage issues: Poor natural runoff risked pooling and ice formation.
- ✓Privacy: Overlooking neighbors and street view.
- ✓Access: Narrow side yard for material delivery.
- ✓Climate resilience: Materials had to withstand -40°C temperatures, UV degradation, and moisture without warping.
PG Home Solutions recommended a geotechnical survey and integrated permeable pavers under the lower level for water management, aligning with Canada Greener Homes Grant eligibility for eco-friendly outdoor features.
Design Phase
Collaboration with the homeowner emphasized functionality, aesthetics, and safety. Using 3D modeling software, the team proposed:
- ✓Upper level: Attached to the house with ledger board flashing for waterproofing, featuring built-in benches and a gas fire pit cutout.
- ✓Lower level: Elevated on posts for airflow, with space for a hot tub foundation.
- ✓Staircase: Stringer-supported with 36-inch width, composite treads, and code-compliant risers (7.75 inches max).
- ✓Railings: Tempered glass panels (42-inch height) on upper level for unobstructed views; aluminum balusters below for durability.
Materials selected for Prince George's demands:
- ✓Pressure-treated lumber (SPF #2 grade) for framing, rated for ground contact.
- ✓Trex Transcend composite decking in composite boards for low-maintenance, slip-resistant surfaces.
- ✓Helix steel helical piles for supplemental support in soft spots.
Design incorporated BC Building Code Section 9.26 for guarding (gaps <4 inches) and load-bearing (40 psf live load + 30 psf snow). Estimated timeline: 4-6 weeks, weather permitting.
Permitting and Preparation
Securing permits from the City of Prince George involved submitting engineered drawings, highlighting compliance with Part 9 residential standards. Key approvals covered setbacks (1.2m from property line), eavestrough integration, and electrical for LED lighting (eligible for BC Hydro rebates).
Site prep included:
- ✓Clearing vegetation and staking layout.
- ✓Excavating for Sonovault footings (24-inch diameter, 48-inch deep).
- ✓Installing silt fences and erosion control per municipal bylaws.
- ✓Utility locates to avoid buried lines.
Construction Process
Foundation and Framing
Construction began with pouring 12 concrete footings using high-strength mix (4000 PSI), reinforced with rebar. Post bases secured beams: doubled 2x12 PT lumber for upper ledger and 3-ply 2x10 for lower beams, spaced 12-16 inches on center per span tables.
Framing highlights:
- ✓Joist hangers (Simpson Strong-Tie) for hurricane ties.
- ✓Blocking every 8 ft for lateral stability.
- ✓Cantilevered edges (up to 12 inches) for curved lower deck perimeter.
Decking Installation
Trex decking was laid in a picture-frame border pattern, with hidden fasteners (Camo system) for seamless finish. Boards acclimated 48 hours on-site to match 15-20% humidity. Expansion gaps: 1/8 inch at ends, per manufacturer specs.Railings, Stairs, and Features
- ✓Glass railings anchored to PT posts with stainless steel stands, top/bottom rails in black powder-coated aluminum.
- ✓Stairs: 5/4x6 composite risers, 2x12 stringers cut for 36-degree pitch.
- ✓Electrical: Recessed low-voltage LED strips under railings and stairs, wired to outdoor GFCI.
- ✓Privacy: Cedar lattice screens on sides, treated for rot.
Challenges overcome:
- ✓Slope adjustment: Laser level ensured <1/4 inch per 10 ft pitch.
- ✓Tree roots: Adjusted footings around spruce roots.
- ✓Weather delays: Tarps protected during rain; heated enclosures for concrete cures below 5°C.
Finishing Touches and Quality Checks
Final inspections confirmed handrail graspability (1.25-2 inch diameter), no splinters, and proper drainage (2% slope away from house). Stainless steel screws throughout prevented corrosion. Homeowner added patio furniture and BBQ station, completing the vision.
Cost Breakdown
Total investment: $52,000 CAD (approx. $110/sq ft, premium for northern materials and engineering). Breakdown:
- ✓Materials: $28,000 (55%) – Trex $12k, lumber $8k, railings $5k, concrete/hardware $3k.
- ✓Labor: $20,000 (38%) – 160 man-hours at skilled rates.
- ✓Permits/Engineering: $2,500 (5%).
- ✓Extras: $1,500 (electrical, delivery).
Savings potential: Canada Greener Homes Grant up to $5,000 for energy-efficient lighting/insulation; FortisBC rebates for eco-materials. Prices reflect 2023 Prince George market, 10-15% above southern BC due to logistics.
Results and Client Feedback
The deck transformed a underutilized slope into 600+ sq ft of year-round potential (snow-melt mats for winter access). Post-project survey: 5/5 stars, with comments on "exceptional durability" and "seamless process." ROI estimated at 70% upon resale, per local appraisers.
This project exemplifies PG Home Solutions' commitment to resilient, code-compliant outdoor structures tailored to Prince George's northern climate.
> Request a free estimate or contact PG Home Solutions to get started on your Prince George project.