57/100CR Score
Ranked #1 because of its Google rating and review volume: 4.5★ from 19 Google reviews.
Best Deck Builders in Cornwall, ON (2026)
6 deck builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Cornwall: Seaway Pools & Patios, CR Score 57/100; 4.5★ from 19 Google reviews.
- 2
Most-reviewed: Beautified Creations Construction and Restoration, 25 Google reviews at 5.0★, the most of 6 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
6 Cornwall deck builders are ranked here by CR Score, from ten published factors. 2 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 5.0★ across 6 rated businesses.
Top 6 deck builders in Cornwall at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Seaway Pools & Patios | 57 | 4.5★ (19) | Cornwall | — | Overall |
| 2 | Beautified Creations Construction and Restoration | 56 | 5.0★ (25) | Cornwall | — | Most reviews |
| 3 | JSM Elite Contracting | 55 | 5.0★ (20) | Cornwall | — | — |
| 4 | Ground Level Construction | 53 | 5.0★ (13) | Cornwall | — | — |
| 5 | Cornwall Renovations JSM Elite | 53 | 5.0★ (4) | Cornwall | Sat · Sun | — |
| 6 | Wilson Construction | 51 | 5.0★ (4) | Cornwall | Sat | — |
The 6 best deck builders in Cornwall, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Cornwall
56/100CR ScoreRanked #2 because of its Google rating and review volume: 5.0★ from 25 Google reviews, the most in Cornwall.
Based in Cornwall
55/100CR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 20 Google reviews.
Based in Cornwall
53/100CR ScoreRanked #4 because of its Google rating and review volume: 5.0★ from 13 Google reviews.
Based in Cornwall
53/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “General contractor”.
Based in Cornwall
51/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Construction company”.
How much do deck builders cost in Cornwall?
US national ranges converted to CAD, not adjusted for Cornwall. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Deck building | CA$6,100 | CA$11,690 | CA$17,780 | Per deck: typical range of customer-reported projects. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
How we ranked Cornwall deck builders
We scored 6 Cornwall deck builders on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 3, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Cornwall data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Deck builders in Cornwall: frequently asked questions
Who is the best deck builder in Cornwall?
By CR Score, the highest-ranked deck builder in Cornwall, ON is Seaway Pools & Patios with a CR Score of 57/100. It has 4.5★ from 19 Google reviews. Beautified Creations Construction and Restoration (#2) and JSM Elite Contracting (#3) follow. We ranked 6 deck builders on ten factors, last updated November 3, 2026.
How many deck builders are there in Cornwall?
ContractorsRanked ranks 6 deck builders serving Cornwall, ON. 6 of them are based in Cornwall; the rest serve it from nearby towns. Counts are as of November 2026.
Which deck builders in Cornwall work on weekends?
2 of 6 ranked deck builders post Saturday hours and 1 post Sunday hours. The highest-ranked open Saturdays are Cornwall Renovations JSM Elite (#5) and Wilson Construction (#6). Posted hours are office hours; crews may book weekend jobs separately.
How much does deck building cost in Cornwall?
Deck building typically costs CA$6,100 to CA$17,780, with CA$11,690 typical (Per deck: typical range of customer-reported projects. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Cornwall. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Cornwall deck builders have?
The median Google rating among 6 rated deck builders in Cornwall is 5.0★, with a median of 16 reviews. Beautified Creations Construction and Restoration has the most, 25 reviews, and ranks #2. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank deck builders?
Each deck builder gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do deck builders outside Cornwall count in this ranking?
Yes, if they are within 40 km of the Cornwall city centre, our service radius for deck builders. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Can deck builders pay to rank higher on ContractorsRanked?
No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.
Update log for Cornwall
- November 2026: CR Scores recalculated for 6 deck builders serving Cornwall.
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