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Decks · Multi-Level · Hamilton
Multi-Level & Raised Deck Builders in Hamilton
Raised and multi-level decks turn walkouts, second-storey doors and sloped escarpment or ravine lots into connected outdoor rooms. Material pricing follows the typical Ontario installed ranges (2026), while multi-level layouts add roughly 25–40% versus a comparable single level.
How a deck is built, from footings to railing
Shown: Multi-level deck — Step 1 of 5 — Footings
- Footings or helical piles reach below the frost line so the deck can't heave in winter.
- Posts carry the load up from the footings.
- Beams and joists frame the structure under the boards.
- Decking boards and a picture-frame border finish the walking surface.
- A black metal safety railing (guard) goes up last, where required.
Est. 2020Footings below frostPermit drawings handledDeck + landscape design
Quick answer
Raised and multi-level decks turn walkouts, second-storey doors and sloped escarpment or ravine lots into connected outdoor rooms. Material pricing follows the typical Ontario installed ranges (2026), while multi-level layouts add roughly 25–40% versus a comparable single level. Your exact price comes from an on-site quote.
Fit before finish
Is this deck right for you?
May not suit
- A simple level yard where one platform works better
- Projects without room for longer stair runs
- Budgets that do not account for guards, bracing and height
Profiles & details
Styles and options
Zoned levels
Dining, lounge and hot-tub areas step with the grade instead of competing on one platform.
Walkout decks
An upper deck preserves the main-floor connection while stairs lead to the yard below.
Under-deck rooms
Storage, screened skirting or a drainage ceiling can make tall space useful when planned early.
Landscape landings
Interlock landings and retaining walls resolve long stair runs at the bottom.
Balanced guidance
Honest pros & considerations
Advantages
- Makes difficult slopes useful
- Creates distinct outdoor rooms
- Preserves views from elevated doors
- Can shelter practical space below
Considerations
- Multi-level design adds roughly 25–40% versus a comparable single level
- A full stair run typically adds $1,500–$3,000
- Tall posts and beams need bracing and closer structural attention
- Guards are 900 mm up to 1.8 m and 1,070 mm above 1.8 m
Typical Ontario installed range (2026)Material table below; multi-level +25–40%
Approximate lifespanVaries by selected surface
MaintenanceDepends on surface and exposure
Feel & heatElevated views with defined activity zones
Material decision
Compare the closest alternatives
Composite
Lifespan 25–30+ yrs
Maintenance Occasional washing
Cost band $$$ · $65–$95/sq ft
Look: Uniform boards, wood-look colours
Heat & comfort: Darker colours get warmer in full sun
Pressure-Treated Wood
Lifespan 15–20 yrs
Maintenance Regular staining/sealing
Cost band $$ · $45–$65/sq ft
Look: Classic wood, stains to suit
Heat & comfort: Stays comfortable underfoot; needs regular sealing
Lifespans are approximate, with proper installation and maintenance. Prices are typical Ontario installed ranges (2026); your exact price comes from an on-site quote.
| Material | Look | Lifespan (approx.) | Maintenance | Typical range |
|---|---|---|---|---|
| Pressure-Treated Wood | Classic wood, stains to suit | 15–20 yrs | Regular staining/sealing | $45–$65 / sq ft |
| Cedar | Warm natural grain | 15–25 yrs | Regular staining/sealing | $55–$80 / sq ft |
| Composite | Uniform boards, wood-look colours | 25–30+ yrs | Low — occasional washing | $65–$95 / sq ft |
| PVC | Crisp, premium finish | 30+ yrs | Low — occasional washing | $80–$110 / sq ft |
Planning range
Estimate your deck
Estimated range for ~192 sq ft$17,180 – $27,240
- Deck surface: $12,480–$18,240
- Stairs: $1,500–$3,000
- Railing: $3,200–$6,000
Raised decks need guards above 600 mm, taller posts and bracing, which push the per-sq-ft rate up. Confirmed on site.
Per-sq-ft rates usually drop as decks get larger; height, stairs, railings and complex shapes push them up.
Typical Ontario installed ranges (2026), not a quote. Your exact price comes from a free on-site visit.
Below the surface
How we build multi-level & raised decks
Height changes every connection. We establish loads, stair landings and guard lines first, then coordinate footings, bracing and the landscape below as one system.
- 01
Survey the slope, doors, setbacks and permit path
- 02
Set zones and stair landings against finished grades
- 03
Size below-frost supports, tall posts, beams and bracing
- 04
Frame each level with flashed attached or freestanding support
- 05
Install selected boards, guards and safe stair transitions
- 06
Finish interlock landings, drainage and under-deck options
What's inside a deck, from the ground up
Everything below the boards — footings, posts, beams and joists — is what keeps a deck safe and level for decades; click a layer to see why it matters.
- Native soil: Undisturbed native soil carries the load. Topsoil and fill are not used as bearing.
- Frost line (~1.2 m): Footings must bear below frost depth — about 1.2 m / 4 ft in this region — so freeze–thaw can't heave the deck.
- Pier or helical pile: Concrete piers are poured below frost; helical piles are screwed down to bearing depth with little excavation and can be loaded right away.
- Post + bracket: Posts sit in a bracket on the footing so they stay dry and positively connected.
- Beam: Beams gather joist loads and carry them to the posts.
- Joists + joist tape: Pressure-treated joists; on composite and PVC builds we add joist/beam protection tape to shed water from the tops.
- Ledger + flashing / freestanding: An attached deck needs a properly fastened and flashed ledger. A freestanding design uses its own beam instead of the house.
- Decking, fasteners, gapping: Hidden fasteners and correct gapping on composite/PVC let boards drain and move with temperature.
- Guard: 900 / 1,070 mm + 100 mm sphere: Guards are required above 600 mm. Minimum 900 mm high up to 1.8 m above grade, 1070 mm above that; openings must stop a 100 mm sphere.
- Stair stringers: Stairs must meet Ontario Building Code rise/run and handrail rules; we frame them to code with solid landings.
2. Frost line (~1.2 m)
Footings must bear below frost depth — about 1.2 m / 4 ft in this region — so freeze–thaw can't heave the deck.
Ownership timeline
Care & maintenance
Inspect movement
Check tall posts, braces, stairs, guards and drainage after freeze–thaw.
Keep water moving
Clear under-deck drains, stair landings and debris at posts.
Maintain the surface
Follow the selected wood, composite or PVC care guidance.
Hamilton · Burlington · Oakville
Permits and guard requirements
Hamilton
Any attached deck needs a permit. New or replacement guards also require a permit. Building Division: 905-546-2720.
Burlington
Attached decks and decks more than 600 mm above grade or over 10 m² commonly need a permit. Confirm with City of Burlington Building.
Oakville
Any attached deck needs a permit; detached decks over 10 m² and higher than 61 cm above grade also need one.
Confirm current requirements with your municipality before building.
Review the complete deck permit guide →How high your deck railing (guard) must be
- Railing (guard)
- Height rule — see key
- Up to 600 mm (2 ft) above the ground: Railing not required by height alone.
- 600 mm – 1.8 m (2–6 ft) above the ground: Railing at least 900 mm (3 ft) tall.
- More than 1.8 m (6 ft) above the ground: Railing at least 1,070 mm (3.5 ft) tall.
- Any gap in the railing must be too small for a 100 mm (about 4 in) ball to pass through.
Planning guides
Deck guides for homeowners
Type-specific answers
Multi-Level & Raised FAQ
Do raised decks need engineering?
Some do, depending on height, spans, loads, soil and municipal review. Tall posts, bracing and unusual conditions deserve closer structural attention.
How much more does a multi-level deck cost?
The research brief allows roughly 25–40% over a comparable single-level deck. Material, stairs, guards, height and access determine the actual quote.
What railing height do I need?
Ontario guards are 900 mm where the deck is up to 1.8 m above grade and 1,070 mm above 1.8 m, with a 100 mm opening limit.
Can the space under a deck be used?
Yes. Options include open planting, storage, screened skirting or an under-deck drainage ceiling, provided access and ventilation are planned.
What affects second-storey deck cost?
Taller supports, bracing, guards, longer stairs, equipment access and the structure at the house all affect scope.
Can you build on a slope?
Yes. The slope must be surveyed and footings, stair landings, drainage and any retaining walls coordinated before construction.
Local deck building
Hamilton, Ancaster, Burlington & Oakville
Hamilton
Hamilton MountainAncasterDundasStoney CreekWaterdownBinbrookFlamboroughWestdaleKirkendallGlanbrook
Burlington
AldershotBrant HillsTyandagaMillcroftApplebyLaSalle
Oakville
BronteGlen AbbeyRiver OaksPalermoOld OakvilleKerr Village
Start on site
Plan your multi-level & raised deck.
Share the approximate size, height, stairs, railings and city. We’ll arrange a free on-site design consult and exact quote.