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What a Deck Costs in Canada — And How Deep the Footings Have to Go
The Canadian part of a deck is the part you cannot see. Footings have to reach below frost, and every municipality publishes its own depth: 457 mm (18″) in Victoria, BC against 2,438 mm (96″) in Saskatoon, SK — 5.3 times deeper for a deck that looks identical from the patio door. Then the building code decides your railing at a single millimetre. Both are inputs here, in Canadian dollars.
Educational calculators — always consult a licensed professional before making financial decisions.
Your deck
The city sets the municipal frost depth your footings must reach and the labour differential applied to the job.
This sets the footing depth your municipality requires — and the spread across Canada is more than five to one.
Footings 1,200 mm (47″) below grade
The side against the house, if it is attached.
The dimension running away from the house.
Deck area 144 sq ft
Height decides whether the building code requires a guard at all; the guard style is priced only when one is required.
The single sharpest price step on this page sits at 600 mm.
An input, not something this calculator works out for you — and that is deliberate.
Priced per linear foot — and glass can cost more than the deck under it.
C$80–C$150 per linear foot
Stairs and demolition are off by default, and each is priced as its own published line.
One publisher's whole ladder, so the steps between tiers are consistent.
C$35–C$60 per sq ft installed
One standard three-to-four step flight.
Nothing added
Removal and disposal, as its own published line.
Nothing added
Deck · Toronto, ON · 12 × 12 ft
C$6,240 – C$10,740
All figures in Canadian dollars (CAD), BEFORE GST, HST and PST. Midpoint C$8,490 — that is C$43.33–C$74.58 per square foot all in.
What has to happen underground — Toronto, ON
Toronto, ON requires deck footings to reach 1,200 mm (47″) below finished grade, to get below the depth of frost penetration. That is 2.6 times deeper than Victoria, BC's 457 mm (18″), for a deck that looks identical from the patio door. Source: Toronto-area deck permit practice, consistently published as 1,200 mm below finished grade.
This figure is attributed to that municipal document but was not confirmed at it on 2026-09-12 — it is carried from a Canadian deck contractor's compilation which names the city document as its source. Of the cities in this list, only Winnipeg's was independently confirmed at the city's own page, and it matched exactly. Treat this as an indication of the right order of magnitude and confirm it with your own building department, which is a free phone call.
And this is where the money stops. This calculator reports the footing depth your municipality requires and stops there. It does not convert depth into dollars, because no Canadian source read publishes a price per metre of pile, per cubic metre of excavation, or any depth-to-cost relation at all — RenoQuotes prices a helical pile per pile, flat, with no depth term in it. Multiplying a flat per-pile price by a depth ratio would invent the one number a homeowner is least able to check. What the depth does tell you is real and worth acting on: a Saskatoon footing is more than five times deeper than a Victoria one, which is why a Prairie deck is quoted with helical piles or engineered concrete piers rather than the precast blocks that are ordinary on the coast, and why 'my cousin in Vancouver paid less' is not a useful comparison.
The guard threshold — 500 mm above grade
No guard is required, and none has been charged. The Ontario Building Code requires one where the drop is MORE THAN 600 mm, and at 500 mm this deck is 100 mm inside that. Raise it by 101 mm and a guard becomes mandatory — which over 36 exposed linear feet would add C$2,880 – C$5,400. That is the sharpest price step on this page and it is worth knowing before the framing goes in, because it is decided by a single dimension you still control.
Ontario Building Code, Division B, Subsection 9.8.8 — a guard is required where there is a difference in elevation of more than 600 mm between the walking surface and the adjacent surface. Guards shall be not less than 1,070 mm high, except that exterior guards serving not more than one dwelling unit shall be not less than 900 mm high where the walking surface is not more than 1,800 mm above finished ground level. 600 mm is also the threshold most Ontario municipalities use to decide whether the deck itself needs a building permit, but permit thresholds are set municipally rather than by the code, so confirm yours rather than assuming. Outside Ontario the provincial code governs and the numbers are generally similar but are not quoted here, because only the Ontario text was read.
Where that band comes from
Every cost band on this page is one Canadian publisher's own ladder, read on one page on one date, rather than the cheapest row from each of several. That is a rule rather than a convenience: a Canadian pricing sweep run for this sprint found two Canadian retailers in the same province in the same week quoting tier ratios of 1.19 and 1.02 for the same step, so there is no Canadian tier ratio to borrow and none is borrowed. Your surface is pressure-treated wood at C$35–C$60 per square foot over 144 square feet. The Canadian default and the cheapest way to get a structurally sound deck. Needs cleaning and re-sealing on a cycle, and a Canadian freeze-thaw winter is harder on it than a mild one — which is the argument for composite in the Prairies rather than on the coast.
Geography moves the whole job through a government wage differential rather than an invented city premium: Job Bank's economic-region medians for the construction trades, damped by a published labour share, giving ×1.0000 for Toronto measured against Toronto. Toronto is the anchor because it is where the published level is best supported — it is the only market with an independent Canadian cross-check bracketing the ladder.
Guard length is taken as two lengths plus one width — three exposed sides, with the fourth (a width) against the house. That is the ordinary attached-deck case and it is an assumption rather than a sourced figure: a wraparound, a freestanding deck or a deck with a doorway gap in the guard will differ, and the guard is priced per linear foot so you can recompute it yourself in one multiplication.
One methodological uncertainty stated plainly, because it is the biggest one on this page. The publisher presents its per-square-foot material bands and its piles, guards, stairs and demolition as separate headings, so this calculator adds them — but a contractor quoting you a single all-in per-square-foot number has almost certainly folded the foundation and a basic guard into it. If you are comparing this estimate to a quote, check what the quote includes before concluding either is wrong. Sanity check on the composition: this publisher's own worked example puts a 12 × 12 pressure-treated deck at about C$5,500 as a starting point, and 144 square feet at the bottom of its own C$35 band is C$5,040 before any pile — so the per-square-foot band appears to be close to a bare structure-and-surface figure, which supports adding the components but does not prove it.
What this calculator will not tell you
No permit fee is priced. Permit fees are set municipally and usually scale with declared construction value, and none was read for any city in this list — so a figure here would be a guess wearing your city's name.
And there is no wood-versus-composite lifetime comparison. Canadian deck marketing is full of claims that the composite premium is recovered in eight to twelve years through avoided maintenance. That is a publisher's assertion with no Canadian cost series behind it, and repeating it with a decimal point attached would be worse than leaving it out. What can be said honestly is directional and is worth saying: freeze-thaw cycling is what actually destroys a wood deck surface, so the maintenance argument for composite is stronger in Winnipeg than in Victoria — and that is a reason to decide it locally rather than from a national average.
Every figure above is in Canadian dollars and is BEFORE tax. GST, HST and PST are not modelled. The CODE figures are government — municipal permit literature for the footing depth, the Ontario Building Code for the guard — but the COST figures are not, and that is said rather than hidden: no Canadian government body and no Canadian industry association publishes an installed deck price, so the bands come from dated Canadian commercial publishers. Only Winnipeg's frost depth was confirmed at the municipality's own document. Estimate only; get written quotes from licensed Canadian contractors and confirm the footing depth and the permit threshold with your own building department before anything is dug.
Pricing the rest of the outside of the house? The Canadian roof replacement cost calculator prices it by province with the eave-protection membrane the code requires, the Canadian home renovation cost calculator covers the wider job in CAD with provincial sales tax on top, and the Canadian HELOC calculator shows what is actually borrowable against the house under Canadian lending limits if the deck is being financed rather than saved for.
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Why a Canadian deck calculator is not an American one with a different currency symbol
Above grade a Canadian deck and an American one are the same object. Below grade they are not the same job. Saskatoon, SK requires footings 5.3 times deeper than Victoria, BC — an eight-foot hole against an eighteen-inch one — and that is the difference between a precast deck block dropped on the ground and a helical pile driven by a machine. It is also why a quote in one Canadian city tells you nothing about a quote in another, and why the honest first question is not “what does a deck cost” but “what does my municipality require underneath it”.
The second Canadian mechanic is a bracket rather than a gradient. The Ontario Building Code requires a guard where the drop is more than 600 mm. At exactly 600 mm, none. At 601 mm, one — and on a 12 × 16 deck's 44 exposed linear feet that is C$3,520–C$6,600 in aluminum picket appearing from a single millimetre. In tempered glass it is C$6,600–C$17,600, which at the top of the band is more than the pressure-treated deck underneath it costs. That is why height is asked for here in millimetres rather than as a vague “raised or ground level” toggle.
And the third is labour, which moves the whole job through Job Bank's economic-region wage medians for the construction trades rather than through an invented city premium — a federal government wage report, damped by a published labour share, so the geography adjustment has a source behind it instead of a guess.
How deep your city makes you dig
Every row is a published municipal figure attributed to that city's own permit document. Read the verification column honestly: 1 of 19 was confirmed at the municipality's own page on 2026-09-12; the rest are carried from a Canadian deck contractor's compilation which names each city's document as its source. Your own building department is the authority in every case, and asking them is free.
| City | Footing depth below grade | vs Victoria, BC | Attributed to |
|---|---|---|---|
| Victoria, BC | 457 mm (18″) | ×1.0 | City of Victoria deck construction diagrams |
| Abbotsford, BC | 457 mm (18″) | ×1.0 | City of Abbotsford deck guidelines |
| Port Coquitlam, BC | 457 mm (18″) | ×1.0 | City of Port Coquitlam official deck guide |
| Toronto, ON | 1,200 mm (47″) | ×2.6 | Toronto-area deck permit practice, consistently published as 1,200 mm below finished grade |
| Calgary, AB | 1,219 mm (48″) | ×2.7 | City of Calgary building guidelines |
| Edmonton, AB | 1,219 mm (48″) | ×2.7 | City of Edmonton residential design guide |
| Kitchener, ON | 1,219 mm (48″) | ×2.7 | City of Kitchener municipal standards |
| Halifax, NS | 1,219 mm (48″) | ×2.7 | Halifax Regional Municipality deck specifications |
| Oshawa, ON | 1,219 mm (48″) | ×2.7 | City of Oshawa construction guide |
| Moncton, NB | 1,219 mm (48″) | ×2.7 | City of Moncton municipal standards |
| St. John's, NL | 1,219 mm (48″) | ×2.7 | St. John's municipal standards — 1,219 mm or to bedrock, whichever is reached first |
| Ottawa, ON | 1,524 mm (60″) | ×3.3 | City of Ottawa deck plan |
| Québec City, QC | 1,524 mm (60″) | ×3.3 | Quebec practice as published by CAA-Québec |
| Red Deer, AB | 1,524 mm (60″) | ×3.3 | City of Red Deer municipal standards |
| Medicine Hat, AB | 1,524 mm (60″) | ×3.3 | City of Medicine Hat documentation |
| Regina, SK | 1,829 mm (72″) | ×4.0 | Regina municipal standards |
| Grande Prairie, AB | 1,829 mm (72″) | ×4.0 | City of Grande Prairie municipal standards |
| Winnipeg, MB | 1,829 mm (72″) | ×4.0 | City of Winnipeg, Planning, Property & Development — Decks brochure: footings must reach the depth of frost penetration, 1.8 m (6'-0")Confirmed at the municipality's own document 2026-09-12 |
| Saskatoon, SK | 2,438 mm (96″) | ×5.3 | City of Saskatoon Building Standards, Deck Construction Project Guide |
This calculator reports the footing depth your municipality requires and stops there. It does not convert depth into dollars, because no Canadian source read publishes a price per metre of pile, per cubic metre of excavation, or any depth-to-cost relation at all — RenoQuotes prices a helical pile per pile, flat, with no depth term in it. Multiplying a flat per-pile price by a depth ratio would invent the one number a homeowner is least able to check. What the depth does tell you is real and worth acting on: a Saskatoon footing is more than five times deeper than a Victoria one, which is why a Prairie deck is quoted with helical piles or engineered concrete piers rather than the precast blocks that are ordinary on the coast, and why 'my cousin in Vancouver paid less' is not a useful comparison.
The cost ladder, in C$ installed
All five rows are one Canadian publisher's own table, read on one page on one date, rather than the cheapest row from each of several. That is the rule this site works under: a Canadian pricing sweep run for this sprint found two Canadian retailers in the same province in the same week quoting tier ratios of 1.19 and 1.02 for the same step, so there is no Canadian tier ratio to borrow and none is borrowed.
| Surface | Installed (CAD/sq ft) | A 12 × 12 deck surface (CAD) |
|---|---|---|
| Pressure-treated wood | C$35–C$60 | C$5,040–C$8,640 |
| Western red cedar | C$60–C$90 | C$8,640–C$12,960 |
| Thermally modified wood | C$75–C$105 | C$10,800–C$15,120 |
| Composite or PVC | C$100–C$130 | C$14,400–C$18,720 |
| Aluminum | C$95–C$135 | C$13,680–C$19,440 |
And the components the same publisher prices separately:
- Helical piles — C$200–C$350 per installed pile. Priced per pile, flat. There is no depth term in this figure, which is precisely why this calculator refuses to scale it by frost depth.
- Aluminum picket guard — C$80–C$150 per linear foot. Over a 12 × 16 deck's 44 exposed feet, C$3,520–C$6,600.
- Aluminum guard with tempered glass — C$150–C$400 per linear foot. The same 44 feet in glass is C$6,600–C$17,600 — at the top of that band the guard costs more than a pressure-treated deck underneath it.
- Stairs — C$400–C$700 for a standard 3–4 step flight. Pressure-treated, standard width. The publisher states that premium materials or an extra-wide flight can easily triple this, and this calculator does not model that multiplier because 'easily triple' is a phrase rather than a figure.
- Demolition — C$500–C$1,500 to remove and dispose of an existing deck. The publisher states C$500–C$1,500 and up; the 'and up' is not modelled. Canadian wrinkle worth knowing: pressure-treated lumber sold here before 2004 was largely CCA-treated, and while landfills generally accept it, it must never be burned.
All bands: RenoQuotes, published 2026-04-08, read 2026-09-12, Canadian dollars installed and before tax. A Canadian commercial publisher, not an authority — no Canadian government body and no Canadian industry association publishes an installed deck price. Independent Canadian cross-check on level, never mixed into the ladder: local.click puts an installed Ontario deck at C$45–C$95 per square foot and a 12 × 12 pressure-treated one at C$5,500–C$9,000. Note its composite band of C$65–C$95 sits materially BELOW RenoQuotes' C$100–C$130: a real disagreement between two Canadian publishers in the same year, shown rather than averaged into a figure neither of them stated.
The assumptions, stated rather than buried
One methodological uncertainty stated plainly, because it is the biggest one on this page. The publisher presents its per-square-foot material bands and its piles, guards, stairs and demolition as separate headings, so this calculator adds them — but a contractor quoting you a single all-in per-square-foot number has almost certainly folded the foundation and a basic guard into it. If you are comparing this estimate to a quote, check what the quote includes before concluding either is wrong. Sanity check on the composition: this publisher's own worked example puts a 12 × 12 pressure-treated deck at about C$5,500 as a starting point, and 144 square feet at the bottom of its own C$35 band is C$5,040 before any pile — so the per-square-foot band appears to be close to a bare structure-and-surface figure, which supports adding the components but does not prove it.
Guard length is taken as two lengths plus one width — three exposed sides, with the fourth (a width) against the house. That is the ordinary attached-deck case and it is an assumption rather than a sourced figure: a wraparound, a freestanding deck or a deck with a doorway gap in the guard will differ, and the guard is priced per linear foot so you can recompute it yourself in one multiplication.
What this calculator refuses to tell you
It will not tell you how many footings you need. No Canadian source read publishes a residential deck pile spacing, and the spacing that matters depends on beam and joist sizes, spans, the snow load your municipality designs to, and the soil. A calculator that multiplied your area by an invented factor and rendered the output as a pile count would be producing something that looks like a structural layout — the one thing a homeowner is least able to check. So it is a field, with rough orientation attached: an ordinary 12 × 12 attached deck is commonly six footings, a 12 × 16 commonly eight or nine.
It will not price a permit. Permit fees are municipal and usually scale with declared construction value, and none was read for any city in this list, so any figure would be a guess wearing your city's name.
And it will not tell you when composite pays for itself. Canadian deck marketing puts that at eight to twelve years through avoided maintenance. That is a publisher's assertion with no Canadian cost series behind it, so no payback figure appears here. What can be said honestly is directional and still useful: freeze-thaw cycling is what actually destroys a wood deck surface, so the maintenance argument for composite is stronger in Winnipeg than in Victoria — which makes it a local decision rather than a national average.
Sources
- Decks — Planning, Property & Development brochure — City of Winnipeg (municipal government). Read 2026-09-12.Government primary, and the one frost-depth row confirmed at the municipality's own document on the retrieval date: footings for a wood deck must reach the depth of frost penetration, 1.8 m (6'-0"). The brochure also sets out when an engineered concrete pile or pier is required and when tested screw piles may be substituted.
- Deck Construction Project Guide — City of Saskatoon, Building Standards (municipal government). Read 2026-09-12.The city's own deck permit guide, covering uncovered and covered decks on one-unit, two-unit and multi-family dwellings. HONESTY NOTE: the PDF could not be text-extracted on the retrieval date, so Saskatoon's 2,438 mm figure below is carried on the aggregator's attribution to this document rather than on a direct reading of it. It is flagged as unverified in the dataset and on the page.
- 22 Canadian Cities — Deck Footing Depths and Maximum Distance from House — Decks by E3 (Canadian deck contractor). Read 2026-09-12.The compilation the municipal frost-depth table is drawn from. A Canadian commercial publisher, not an authority — but it attributes each city's figure to that city's own permit document by name, which is why it is usable as a compilation and why each row carries its attribution here. Winnipeg's row was independently confirmed at winnipeg.ca on the same date and matches exactly; the others are marked unverified. Your own municipality is the authority in every case.
- Ontario Building Code, Division B, Subsection 9.8.8 — Guards — Government of Ontario (provincial building code). Read 2026-09-12.Provincial code. Source for the 600 mm guard trigger and the 900 mm / 1,070 mm height pair at the 1,800 mm threshold. Only the Ontario text was read, so no other province's guard numbers are quoted on this route.
- Deck Cost in Canada 2026: How Much Does It Cost to Build a Deck? — RenoQuotes (Canadian renovation marketplace). Read 2026-09-12. 2026-04-08.The single publisher every cost band on this route comes from — the five-material per-square-foot ladder, helical piles at C$200–C$350 per installed pile, aluminum picket guard at C$80–C$150 per linear foot and glass at C$150–C$400, a standard stair flight at C$400–C$700, and demolition at C$500–C$1,500. One publisher's whole ladder rather than the cheapest row from each of several, so the internal steps are consistent. A Canadian commercial publisher, not an authority: no Canadian government body and no Canadian industry association publishes an installed deck price.
- Deck Cost Ontario 2026: Actual Prices per Square Foot — local.click (Canadian trade directory). Read 2026-09-12.Independent Canadian cross-check on LEVEL only, never mixed into the ladder: an installed Ontario deck at roughly C$45–C$95 per square foot, pressure-treated C$45–C$65 and composite C$65–C$95, with a 12 × 12 pressure-treated deck at C$5,500–C$9,000. Note that its composite band sits materially BELOW RenoQuotes' C$100–C$130, which is a real disagreement between two Canadian publishers in the same year and is shown rather than averaged away.
Every source above is Canadian. No US dataset, survey, code or price has been converted or used as a proxy anywhere on this route, and no exchange rate appears in its code. The CODE figures are government — municipal permit literature and the Ontario Building Code. The COST figures are not, and that is said rather than hidden. All figures are before GST, HST and PST. Estimate only — get written quotes from licensed Canadian contractors, and confirm both the footing depth and the permit threshold with your own building department before anything is dug.
Next steps
A deck is usually one line on a longer list. The Canadian home renovation cost calculator puts the whole job in CAD with the provincial sales tax on top, and the Canadian roof replacement cost calculator prices the other outdoor job by province, with the eave-protection membrane the code requires. If the ground the deck looks out over is being redone at the same time, the Canadian artificial grass cost calculator prices a synthetic lawn in CAD from the same starting point this page uses — what has to happen underground — except that there the question is how many inches of compacted aggregate stop freeze-thaw lifting the turf. If the deck is part of getting a house ready to sell or to rent, the Canadian investment property ROI calculator is where to check whether the spend comes back. And if it is being financed rather than saved for, the Canadian HELOC calculator shows what is actually borrowable against the house under Canadian lending limits.
Frequently asked questions
How much does it cost to build a deck in Canada in 2026?
RenoQuotes, writing on 8 April 2026, publishes installed Canadian per-square-foot bands of C$35 to C$60 for pressure-treated wood, C$60 to C$90 for western red cedar, C$75 to C$105 for thermally modified wood, C$95 to C$135 for aluminum and C$100 to C$130 for composite or PVC. Separately it puts helical piles at C$200 to C$350 per installed pile, an aluminum picket guard at C$80 to C$150 per linear foot and a glass one at C$150 to C$400, a standard three-to-four step flight at C$400 to C$700, and demolition of an existing deck at C$500 to C$1,500. On that basis a 12 by 12 pressure-treated deck on six piles with no guard required comes to roughly C$6,240 to C$10,740. A second Canadian publisher brackets that independently, putting an installed Ontario deck at C$45 to C$95 per square foot and a 12 by 12 pressure-treated one at C$5,500 to C$9,000. All figures are Canadian dollars and before GST, HST and PST. One disagreement worth naming rather than averaging away: those two publishers differ sharply on composite, C$100 to C$130 against C$65 to C$95, in the same year. And the caveat that governs all of it — no Canadian government body and no Canadian industry association publishes an installed deck price, so these are commercial publishers with dates attached, not an authority.
How deep do deck footings have to be in Canada?
Below the depth of frost penetration, and that depth is published by your own municipality rather than nationally — which is why the answer varies more than almost anything else about a deck. Across the cities in this calculator: Victoria, Abbotsford and Port Coquitlam publish 457 mm, which is 18 inches. Toronto is 1,200 mm. Calgary, Edmonton, Kitchener, Halifax, Oshawa, Moncton and St. John's are 1,219 mm, or 48 inches, with St. John's adding 'or to bedrock, whichever comes first'. Ottawa, Québec City, Red Deer and Medicine Hat are 1,524 mm. Regina, Grande Prairie and Winnipeg are 1,829 mm — the City of Winnipeg's own decks brochure states it as 1.8 metres, six feet. Saskatoon is 2,438 mm, eight feet. Saskatoon's requirement is 5.3 times Victoria's. That is the practical reason a Prairie deck is quoted with helical piles or engineered concrete piers while precast deck blocks are ordinary on the south coast of British Columbia, and it is why a quote in one Canadian city tells you very little about a quote in another. Honest limitation: of these, only Winnipeg's figure was confirmed at the city's own document on 12 September 2026; the rest are attributed to named municipal documents by a Canadian deck contractor's compilation. Your building department is the authority and it is a free phone call.
Why does this calculator not charge more for a deeper footing?
Because no Canadian source read publishes a price per metre of pile, per cubic metre of excavation, or any depth-to-cost relation at all. The only published Canadian pile figure found is a flat C$200 to C$350 per installed pile, with no depth term in it. Multiplying that flat price by a depth ratio would invent exactly the kind of number a homeowner has no way to check, and dressing an invention up with a decimal point is worse than leaving a gap. So the calculator reports the depth your municipality requires and stops there. What the depth does tell you is real and worth acting on even without a dollar figure attached: it tells you which foundation type your contractor will be quoting, it tells you why a Saskatoon quote is not comparable to a Victoria one, and it tells you to ask whether the price you were given actually assumes going that deep. If a Winnipeg quote looks like a Victoria quote, the footings are the first thing to check.
When does a deck in Ontario need a railing, and how high?
The Ontario Building Code, Division B, Subsection 9.8.8, requires a guard where there is a difference in elevation of more than 600 mm between the walking surface and the adjacent ground. Note the words 'more than': at exactly 600 mm no guard is required, and at 601 mm one is. The height then has two tiers. Guards must generally be not less than 1,070 mm high, except that exterior guards serving not more than one dwelling unit need be not less than 900 mm where the walking surface is not more than 1,800 mm above finished ground level. So an ordinary house deck under 1,800 mm needs 900 mm of guard, and above that it needs 1,070 mm. The cost consequence of that first threshold is the sharpest step on this whole calculator. A 12 by 16 deck has 44 exposed linear feet on the usual three-sided attached layout, and at the published C$80 to C$150 per linear foot for aluminum picket that is C$3,520 to C$6,600 appearing from one millimetre of deck height. In tempered glass at C$150 to C$400 per linear foot it is C$6,600 to C$17,600 — at the top of that band the guard costs more than the pressure-treated deck underneath it. 600 mm is also the threshold most Ontario municipalities use to decide whether the deck needs a building permit at all, but permit thresholds are set municipally rather than by the code, so confirm yours. Only the Ontario text was read for this build, so no other province's guard numbers are quoted here.
How many footings does a deck need?
This calculator will not tell you, and the refusal is deliberate. No Canadian source read publishes a residential deck pile spacing, and the spacing that actually matters depends on the beam and joist sizes, the spans, the snow load your municipality designs to, and the soil. A calculator that multiplied your deck area by an invented factor and rendered the output as a pile count would be producing something that looks like a structural layout — which is the one thing a homeowner is least able to check, and the same reason the Canadian furnace calculator on this site makes the BTU size an input rather than inventing a per-square-foot sizing rule. So the pile count is a field here, and the guidance attached to it is rough orientation only: an ordinary 12 by 12 attached deck is commonly six footings and a 12 by 16 commonly eight or nine. Get the real number from the contractor or the drawings. The City of Winnipeg's own decks brochure is worth reading on the related point: it sets out when an engineered concrete pile or pier is required and when tested screw piles may be substituted, and those are structural decisions rather than price tiers.
Is composite decking worth the extra money in Canada?
Probably more so in Winnipeg than in Victoria, and that is about as precise as this page is willing to be. Canadian deck marketing is full of claims that the composite premium is recovered in eight to twelve years through avoided maintenance. That is a publisher's assertion with no Canadian cost series behind it — nobody read for this build publishes a maintenance cost per square foot per year for a Canadian deck — and repeating it with a decimal point attached would be worse than leaving it out, so no payback figure appears anywhere on this route. What can be said honestly is directional. Freeze-thaw cycling is what actually destroys a wood deck surface, rather than sunlight or ordinary wear, so the maintenance argument for composite gets stronger as the winter gets harder, which makes this a decision to take locally rather than from a national average. The up-front gap is real and it is large: this publisher puts composite and PVC at C$100 to C$130 per square foot against C$35 to C$60 for pressure-treated, roughly two to three times. Another Canadian publisher disagrees materially on that composite figure, putting it at C$65 to C$95 in the same year, and both numbers are shown on this page rather than averaged into one that neither publisher stated.
Does this deck estimate include the permit, and does it include the railing?
No permit, and the railing only when the code requires one. No permit fee is priced anywhere on this route: fees are set municipally and usually scale with declared construction value, and none was read for any city in this list, so any figure here would be a guess wearing your city's name. The guard is included automatically whenever the deck height exceeds the code's 600 mm threshold, and when it does not the calculator shows what a guard WOULD cost rather than silently omitting the line, because that number is often what decides the deck height. There is one methodological uncertainty worth stating plainly, and it is the biggest one on this page: the publisher presents its per-square-foot material bands and its piles, guards, stairs and demolition under separate headings, so this calculator adds them together — but a contractor quoting you a single all-in per-square-foot number has almost certainly folded the foundation and a basic guard into it. Before concluding that this estimate or your quote is wrong, check what the quote actually includes. The sanity check that supports adding them: the same publisher's own worked example puts a 12 by 12 pressure-treated deck at about C$5,500 as a starting point, and 144 square feet at the bottom of its own C$35 band is C$5,040 before any pile at all.
What should I know before tearing out an old Canadian deck?
Two things that catch people, beyond the published C$500 to C$1,500 for removal and disposal. First, the lumber. Pressure-treated wood sold in Canada before 2004 was largely CCA-treated — chromated copper arsenate — and it is not ordinary burnable waste. Municipal landfills generally accept it, but it must never be burned, which rules out the obvious cheap disposal route and is a genuine health matter rather than a bylaw technicality. Second, the footings. If the existing footings are sound, correctly placed for the new framing and deep enough for your municipality's current requirement, a new deck may be able to reuse them, which is a real saving. If they are not, pulling them out is separate work that the published demolition figure does not include, and old concrete piers in Prairie ground are not quick to remove. Worth establishing which situation you are in before agreeing a demolition price, because the two cases are not close to each other in cost.
Want to try different numbers?
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Cost ranges and rates here are checked against contractor quotes and published industry data. If a number still looks off, email Support@RealCostIQ.com and we'll review and fix it.