Understanding timelines, stages, and what actually affects the build
One of the most common questions homeowners ask is: “How long does it take to build a deck?”
The short answer: Most custom decks take 2–3 weeks from first shovel to final board.
The long answer: It depends on design, materials, inspections, weather, and how complex the build is.
Here’s a clear breakdown of what really determines your timeline.
1. The Planning & Design Phase (1–2 Weeks)
Before any construction starts, the design, measurements, material selections, and engineering details need to be finalized. This stage goes quickly for simple decks, but a bit longer for larger or multi-level builds.
Typical steps include:
- Site visit & measurements
- Design sketches or 3D drawings
- Material selection (composite, PVC, wood, railing styles)
- Engineering if required
Homeowners often underestimate this stage, but solid planning prevents issues later.
2. Permits & Approvals (1–4 Weeks)
This is the biggest variable — and often outside the builder’s control.
In Ontario, deck permits can take anywhere from a few days to a few weeks, depending on the municipality and season.
Factors that affect approval time:
- How busy the local building department is
- Whether the deck attaches to the home
- Structural complexity
- Height of the deck
- Whether stairs or multiple levels are involved
If you’re planning a deck for spring or early summer, starting the permit process early is key.
3. Site Prep & Footings (1–3 Days)
Once permits are approved, construction begins with setting the foundation.
This includes:
- Marking the layout
- Digging or drilling holes
- Installing footings or helical piles
- Leveling and inspection if required
Helical piles often speed up this stage because they require no concrete curing time.
4. Framing the Deck (2–5 Days)
Framing is where the project starts to look real.
A simple rectangular deck can be framed quickly, while multi-level structures or decks with curves take longer.
What affects framing time:
- Number of levels
- Height of the deck
- Whether there are beams, cantilevers, or specialty structures
- Weather conditions (rain, snow, or frozen ground slow things down)
This is the stage where quality truly matters — strong framing equals a deck that lasts decades.
5. Decking, Railings & Finishing Touches (3–7 Days)
This part varies the most depending on materials and design details.
Composite decking installs differently than wood. Glass railings or privacy walls take more time than standard picket railings. And if you’re adding lighting or built-in seating, expect a longer finishing stage.
Common finishing features that influence timeline:
- Deck board pattern (angled, herringbone, picture framing)
- Type of railings
- Privacy screens
- Stairs or wraparound steps
- Built-in planters, benches, or lighting
For many homeowners, this stage is the most exciting because the deck rapidly takes shape.
6. Total Time: So… How Long Does It Take to Build a Deck?
Here’s a realistic overview:
Small, simple deck:
7–10 days
Mid-sized composite deck:
10–15 days
Large or multi-level deck:
15–25 days
Projects with lengthy permits or specialty features:
3–6 weeks total start-to-finish
This includes design, permits, foundation, framing, decking, railings, and final details.
Final Thoughts
A custom deck isn’t just a structure — it’s a construction project with multiple moving parts. While most decks take 2–3 weeks of actual build time, the total timeline depends on permits, design complexity, and materials.
