139 deck builders ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Oshawa: Aztec Decks, CR Score 59/100; 5.0★ from 41 Google reviews.
Best for emergencies (open 24/7): DayJobs - Window Cleaning, posts 24/7 hours; ranked #2 of 139.
Most-reviewed: Can Do Fence & Deck, 271 Google reviews at 4.8★, the most of 139 ranked; ranked #11.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
139 Oshawa deck builders are ranked here by CR Score, from ten published factors. 8 are open 24/7, 100 open Saturdays and 62 open Sundays, based on posted hours. The median Google rating is 5.0★ across 139 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Aztec Decks | 59 | 5.0★ (41) | Oshawa | — | Overall |
| 2 | DayJobs - Window Cleaning | 59 | 5.0★ (60) | Oshawa | 24/7 | Emergencies |
| 3 | Deck Builder Brooklin | 58 | 5.0★ (6) | Oshawa | Sat · Sun · Evenings | — |
| 4 | Flann Fence & Deck | 58 | 4.8★ (19) | Ajax, 17 km away | Sat · Sun · Evenings | — |
| 5 | DAP Contracting | 57 | 4.9★ (74) | Oshawa | Sat · Sun · Evenings | — |
| 6 | Golden Valley Decks | 57 | 5.0★ (39) | Markham, 33 km away | Sat · Sun · Evenings | — |
| 7 | Modern Decks & Vinyl Fences | 57 | 5.0★ (92) | Cobourg, 13 km away | Sat · Evenings | — |
| 8 | Frontier PMC | 57 | 5.0★ (57) | Oshawa | Sat · Sun · Evenings | — |
| 9 | Robb's Renos | 57 | 5.0★ (30) | Uxbridge, 31 km away | Sat · Sun · Evenings | — |
| 10 | Para-Loc Interlock and Landscape | 57 | 5.0★ (47) | Oshawa | Sat · Sun | — |
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.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Deck builder”.
Based in Oshawa
Ranked #2 because of its Google rating and review volume: 5.0★ from 60 Google reviews.
Based in Oshawa
Ranked #3 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Deck builder”.
Based in Ajax, 17 km away
Ranked #4 because of its Google rating and trade focus: 4.8★ from 19 Google reviews, listed on Google as “Deck builder”.
Based in Oshawa
Ranked #5 because of its Google rating and review volume: 4.9★ from 74 Google reviews.
Based in Markham, 33 km away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 39 Google reviews, listed on Google as “Deck builder”.
Based in Cobourg, 13 km away
Ranked #7 because of its Google rating and review volume: 5.0★ from 92 Google reviews.
Based in Oshawa
Ranked #8 because of its Google rating and review volume: 5.0★ from 57 Google reviews.
Based in Uxbridge, 31 km away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Deck builder”.
Based in Oshawa
Ranked #10 because of its Google rating and review volume: 5.0★ from 47 Google reviews.
Based in East Gwillimbury, 37 km away
Ranked #11 because of its Google rating and review volume: 4.8★ from 271 Google reviews, the most in Oshawa.
Based in Oshawa
Ranked #12 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Deck builder”.
Based in Oshawa
Ranked #13 because of its Google rating and trade focus: 4.6★ from 21 Google reviews, listed on Google as “Construction company”.
Based in Ajax, 9 km away
Ranked #14 because of its Google rating and review volume: 4.8★ from 216 Google reviews.
Based in Oshawa
Ranked #15 because of its Google rating and review volume: 5.0★ from 39 Google reviews.
Based in Oshawa
Ranked #16 because of its Google rating and review volume: 4.8★ from 23 Google reviews.
Based in Ajax, 14 km away
Ranked #17 because of its Google rating and trade focus: 4.6★ from 45 Google reviews, listed on Google as “Deck builder”.
Based in Ajax, 15 km away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Deck builder”.
Based in Markham, 32 km away
Ranked #19 because of its Google rating and review volume: 4.8★ from 119 Google reviews.
Based in Cobourg, 12 km away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Fence contractor”.
Based in Oshawa
Ranked #21 because of its Google rating and review volume: 4.2★ from 65 Google reviews.
Based in Ajax, 15 km away
Ranked #22 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Deck builder”.
Based in Oshawa
Ranked #23 because of its Google rating and review volume: 5.0★ from 24 Google reviews.
Based in Oshawa
Ranked #24 because of its Google rating and review volume: 4.8★ from 31 Google reviews.
Based in Ajax, 13 km away
Ranked #25 because of its Google rating and review volume: 5.0★ from 59 Google reviews.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 139 ranked deck builders here; the rest are on their profiles.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Deck Builder Markham | 55 | 5.0★ (12) | 31 km |
| 27 | Stoney Woods Landscaping | 55 | 5.0★ (48) | In Oshawa |
| 28 | Annie's | 54 | 4.9★ (68) | 28 km |
| 29 | Affordable Deck and Fence | 54 | 4.7★ (44) | 13 km |
| 30 | Ajax Deck Builder | 54 | 5.0★ (3) | 16 km |
| 31 | Lake Ontario Contracting | 54 | 4.8★ (21) | In Oshawa |
| 32 | Nextview Development | 54 | 4.7★ (77) | 16 km |
| 33 | Decksforlife | 54 | 5.0★ (25) | 36 km |
| 34 | 4 Season Solutions | 54 | 4.7★ (47) | 22 km |
| 35 | Hickory Dickory Decks Clarington | 54 | 5.0★ (9) | In Oshawa |
| 36 | Walia’s property maintenance | 54 | 5.0★ (69) | 34 km |
| 37 | Barkhouse Custom Designs | 54 | 4.9★ (38) | 14 km |
| 38 | Professional Pride Pressure Wash and Deck Staining | 53 | 4.9★ (38) | 31 km |
| 39 | Deckoria | 53 | 5.0★ (5) | 18 km |
| 40 | Dr. Decks & Fence, Repairs | 53 | 5.0★ (9) | 36 km |
| 41 | Msg Post Hole Diggers | 53 | 4.9★ (127) | 33 km |
| 42 | CANPRO 360 Inc. | 53 | 4.7★ (41) | 13 km |
| 43 | CMH Construction | 53 | 5.0★ (23) | In Oshawa |
| 44 | Wall To Wall Renovations | 53 | 5.0★ (11) | In Oshawa |
| 45 | Four Leaf General Contracting | 53 | 4.3★ (16) | In Oshawa |
| 46 | Paintify Ajax Painting | 53 | 5.0★ (32) | 19 km |
| 47 | Decksrus | 53 | 4.5★ (17) | 21 km |
| 48 | Seal Tech Inc | 52 | 5.0★ (22) | 29 km |
| 49 | Brighterdayscontracting.com | 52 | 5.0★ (10) | 19 km |
| 50 | Holliday Home Exteriors | 51 | 5.0★ (15) | 29 km |
20 more deck builders within 40 km that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Apm Construction | 5.0★ (22) | In Oshawa |
| Aquatech Basement Waterproofing Oshawa | 5.0★ (49) | In Oshawa |
| Building Problems Solver Inc. | 5.0★ (23) | In Oshawa |
| CDP Plumbing of Oshawa | 5.0★ (112) | In Oshawa |
| Cornerstone Construction | 4.6★ (20) | In Oshawa |
| Genesis Landscaping | 5.0★ (29) | In Oshawa |
| HBC Landscaping Ltd. | 4.5★ (34) | In Oshawa |
| Henley Contracting Ltd. | 4.8★ (50) | In Oshawa |
| Honeydew Landscape & Construction | 5.0★ (22) | In Oshawa |
| iTrim4U Oshawa | 4.8★ (22) | In Oshawa |
| Milner's Lawn Care Service | 4.8★ (60) | In Oshawa |
| Mr. Trim Lawn & Garden Services | 4.6★ (215) | In Oshawa |
| NuGuard Windows and Doors | 4.8★ (21) | In Oshawa |
| Outdoor Floors Toronto - Stylish Balcony Flooring | 5.0★ (72) | In Oshawa |
| Paradisaic Building Group | 5.0★ (53) | In Oshawa |
| Pristine Contracting Inc. | 5.0★ (24) | In Oshawa |
| Rocpal Custom Cabinets in Toronto & Oshawa | 4.5★ (63) | In Oshawa |
| Scapeworks Outdoors | 5.0★ (23) | In Oshawa |
| Simcoe HANDYMAN | 4.4★ (27) | In Oshawa |
| slabX Kitchen and Countertops | 4.7★ (217) | In Oshawa |
US national ranges converted to CAD, not adjusted for Oshawa. 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 |
We scored 139 Oshawa 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 October 22, 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 Oshawa 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 |