64/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 57 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 175 Park Rd S, Oshawa, ON L1J 4H1
Best General Contractors in Oshawa, ON (2026)
285 general contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Oshawa: Frontier PMC, CR Score 64/100; 5.0★ from 57 Google reviews; open 7 days a week.
- 5
Best for emergencies (open 24/7): DMJ Construction & Renovation, posts 24/7 hours; ranked #5 of 285.
- 7
Most-reviewed: Handy Birds Services, 127 Google reviews at 5.0★, the most of 285 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
285 Oshawa general contractors are ranked here by CR Score, from ten published factors. 27 are open 24/7, 173 open Saturdays and 88 open Sundays, based on posted hours. The median Google rating is 5.0★ across 285 rated businesses.
Top 10 general contractors in Oshawa at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Frontier PMC | 64 | 5.0★ (57) | Oshawa | Sat · Sun · Evenings | Overall |
| 2 | Built to Last Contracting | 63 | 5.0★ (48) | Oshawa | Sat · Sun | — |
| 3 | Infovision Construction | 63 | 4.9★ (62) | Ajax, 7 km away | Sat · Sun · Evenings | — |
| 4 | Superior Solutions Contracting | 62 | 4.9★ (37) | Oshawa | Sat · Sun · Evenings | — |
| 5 | DMJ Construction & Renovation | 61 | 4.8★ (25) | Oshawa | 24/7 | Emergencies |
| 6 | Apm Construction | 61 | 5.0★ (22) | Oshawa | Sat · Sun | — |
| 7 | Handy Birds Services | 61 | 5.0★ (127) | Markham, 35 km away | Sat · Sun · Evenings | Most reviews |
| 8 | Apex Builds | 61 | 4.4★ (27) | Ajax, 9 km away | 24/7 | — |
| 9 | Tassone Contracting | 61 | 5.0★ (19) | Oshawa | 24/7 | — |
| 10 | Built wright | 61 | 4.7★ (23) | Oshawa | Sat · Sun | — |
The 285 best general contractors in Oshawa, 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 Oshawa
63/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 48 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 48 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat 10 AM–5 PM · Sun 12 PM–5 PM
Based in Ajax, 7 km away
63/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 62 Google reviews, listed on Google as “Construction company”.
- 4.9★ from 62 Google reviews
- Hours
- Mon–Thu 9 AM–7 PM · Fri 9 AM–6 PM · Sat 10 AM–4 PM · Sun 11 AM–3 PM
- Address
- 7 Glengowan St, Whitby, ON L1R 2X2
Based in Oshawa
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 37 Google reviews, listed on Google as “General contractor”.
- 4.9★ from 37 Google reviews
- Hours
- Mon–Sun 8 AM–9 PM
Based in Oshawa
61/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.8★ from 25 Google reviews, listed on Google as “General contractor”.
- 4.8★ from 25 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5 Gearings Ln, Courtice, ON L1E 2G9
Based in Oshawa
61/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 22 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 22 Google reviews
- Hours
- Mon–Sun 7 AM–5 PM
Based in Markham, 35 km away
61/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 127 Google reviews, the most in Oshawa.
- 5.0★ from 127 Google reviews
- Hours
- Mon–Fri 8 AM–9 PM · Sat 8 AM–8 PM · Sun 9 AM–4 PM
- Address
- 115 Redkey Dr, Markham, ON L3S 4R7
#8 Apex Builds
Based in Ajax, 9 km away
61/100CR ScoreRanked #8 because of its Google rating and trade focus: 4.4★ from 27 Google reviews, listed on Google as “Construction company”.
- 4.4★ from 27 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 70 Haverhill Crescent, Whitby, ON L1R 3E8
Based in Oshawa
61/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 19 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 95 Holyrod Dr, Courtice, ON L1E 0G7
#10 Built wright
Based in Oshawa
61/100CR ScoreRanked #10 because of its Google rating and trade focus: 4.7★ from 23 Google reviews, listed on Google as “Construction company”.
- 4.7★ from 23 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 343 Bloor St W #4, Oshawa, ON L1J 5Y5
Based in Oshawa
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 17 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 17 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 367 Okanagan Path, Oshawa, ON L1H 0B1
Based in Oshawa
60/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 28 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Ajax, 14 km away
60/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 57 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 57 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 10 AM–4 PM · Sun closed
- Address
- 2 Rumbellow Cres, Ajax, ON L1Z 0P9
#14 Daylight Renos
Based in Oshawa
60/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 16 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 1683 Gower Dr, Oshawa, ON L1K 0J7
Based in Oshawa
60/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 15 Google reviews
- Hours
- Mon–Fri 7 AM–5 PM · Sat–Sun 10 AM–5 PM
Based in Oshawa
60/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 15 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 883 Catskill Dr, Oshawa, ON L1J 8J8
#17 Max Improvements
Based in Cobourg, 19 km away
60/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 40 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
- Address
- 3575 Pollard Rd, Newcastle, ON L1B 0T6
Based in Oshawa
60/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 24 Google reviews
- Hours
- Mon–Fri 7 AM–8 PM · Sat 8 AM–6 PM · Sun closed
- Address
- 285 Taunton Rd E, Oshawa, ON L1G 3V2
Based in Oshawa
60/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 23 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 23 Google reviews
- Hours
- Mon–Sat 8 AM–8 PM · Sun closed
- Address
- 745 Downview Crescent, Oshawa, ON L1H 7W4
Based in Oshawa
60/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Fri 6 AM–9 PM · Sat 6 AM–4 PM · Sun 9 AM–3 PM
- Address
- 141 Roxborough Ave, Oshawa, ON L1G 5W6
Based in Oshawa
60/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
- Address
- 296 Wilson Rd S, Oshawa, ON L1H 6C5
Based in Oshawa
60/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “General contractor”.
- 5.0★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 231 James St, Oshawa, ON L1H 4Y4
Based in Markham, 37 km away
59/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.8★ from 110 Google reviews, listed on Google as “General contractor”.
- 4.8★ from 110 Google reviews
- Hours
- Mon–Sun 9 AM–9 PM
- Address
- 4261 Hwy 7 B3, Unionville, ON L3R 9W6
Based in Markham, 34 km away
59/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Contractor”.
- 5.0★ from 69 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 15 Strathmore Dr, Markham, ON L3P 6J7
#25 Get Reno
Based in Pickering, 20 km away
59/100CR ScoreRanked #25 because of its Google rating and trade focus: 4.3★ from 36 Google reviews, listed on Google as “General contractor”.
- 4.3★ from 36 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1315 Pickering Pkwy suite 300, Pickering, ON L1V 0G2
General contractors ranked #26 to #50
#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 285 ranked general contractors here; the rest are on their profiles.
Also serving Oshawa
20 more general contractors 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 |
|---|---|---|
| Aquatech Basement Waterproofing Oshawa | 5.0★ (49) | In Oshawa |
| Axhorn Landscaping & Contracting | 5.0★ (39) | In Oshawa |
| Aztec Decks | 5.0★ (41) | In Oshawa |
| Brandom Kitchens & Bath Design Centre | 4.6★ (50) | In Oshawa |
| Cardan Group | 3.5★ (44) | In Oshawa |
| Colin's Roofing & Eavestrough Inc. | 4.9★ (92) | In Oshawa |
| DAP Contracting | 4.9★ (74) | In Oshawa |
| Fice Multi Trade Inc. | 5.0★ (41) | In Oshawa |
| Green Crew Contracting | 5.0★ (46) | In Oshawa |
| Green Planet Electric | 4.9★ (157) | In Oshawa |
| Hometown Flooring Inc | 5.0★ (69) | In Oshawa |
| MLC Landscaping | 4.6★ (130) | In Oshawa |
| Para-Loc Interlock and Landscape | 5.0★ (47) | In Oshawa |
| Powersource Electric Inc. | 5.0★ (328) | In Oshawa |
| QuickContractors.com | 4.5★ (6,092) | In Oshawa |
| SaphCo. Custom Cabinetry & Kitchens | 4.4★ (49) | In Oshawa |
| Sharpe Advantage Heating And Air Conditioning | 5.0★ (96) | In Oshawa |
| Stoney Woods Landscaping | 5.0★ (48) | In Oshawa |
| TerraconPlus Contracting Fence & Deck | 4.2★ (65) | In Oshawa |
| Urban Contracting & Arborist Durham | 4.9★ (41) | In Oshawa |
How much do general contractors cost 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 |
|---|---|---|---|---|---|
| Kitchen remodel | CA$20,510 | CA$37,930 | CA$58,490 | Per project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
| Bathroom remodel | CA$9,350 | CA$17,080 | CA$24,820 | Per bathroom: typical range of customer-reported remodels. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
How we ranked Oshawa general contractors
We scored 285 Oshawa general contractors 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 |
General contractors in Oshawa: frequently asked questions
Who is the best general contractor in Oshawa?
By CR Score, the highest-ranked general contractor in Oshawa, ON is Frontier PMC with a CR Score of 64/100. It has 5.0★ from 57 Google reviews. It is open 7 days a week. Built to Last Contracting (#2) and Infovision Construction (#3) follow. We ranked 285 general contractors on ten factors, last updated October 22, 2026.
How many general contractors are there in Oshawa?
ContractorsRanked ranks 285 general contractors serving Oshawa, ON. 29 of them are based in Oshawa; the rest serve it from nearby towns. Another 20 within 40 km are listed but not ranked yet. Counts are as of October 2026.
Which general contractors in Oshawa are open 24/7?
27 ranked general contractors in Oshawa post 24/7 hours. The highest-ranked are DMJ Construction & Renovation (#5), Apex Builds (#8) and Tassone Contracting (#9). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which general contractors in Oshawa work on weekends?
173 of 285 ranked general contractors post Saturday hours and 88 post Sunday hours. The highest-ranked open Saturdays are Frontier PMC (#1), Built to Last Contracting (#2) and Infovision Construction (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does kitchen remodel cost in Oshawa?
Kitchen remodel typically costs CA$20,510 to CA$58,490, with CA$37,930 typical (Per project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Oshawa. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Oshawa general contractors have?
The median Google rating among 285 rated general contractors in Oshawa is 5.0★, with a median of 12 reviews. Handy Birds Services has the most, 127 reviews, and ranks #7. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank general contractors?
Each general contractor 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 general contractors outside Oshawa count in this ranking?
Yes, if they are within 40 km of the Oshawa city centre, our service radius for general contractors. 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.
Update log for Oshawa
- October 2026: CR Scores recalculated for 285 general contractors serving Oshawa.
More general contractors and Oshawa pages
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Other trades in Oshawa
- Roofers in Oshawa552 ranked
- Plumbers in Oshawa226 ranked
- Electricians in Oshawa212 ranked
- HVAC contractors in Oshawa274 ranked
- Painters in Oshawa87 ranked
- Landscapers in Oshawa132 ranked
- Handymen in Oshawa59 ranked
- Kitchen remodelers in Oshawa242 ranked
- Bathroom remodelers in Oshawa206 ranked
- Flooring contractors in Oshawa144 ranked
- Tile installers in Oshawa42 ranked
- Drywall contractors in Oshawa10 ranked
- Concrete contractors in Oshawa86 ranked
- Fence contractors in Oshawa111 ranked
- Deck builders in Oshawa139 ranked
- Siding contractors in Oshawa136 ranked
- Window installers in Oshawa373 ranked
- Gutter installers in Oshawa78 ranked
- Insulation contractors in Oshawa45 ranked
- Solar installers in Oshawa64 ranked
- Garage door repair companies in Oshawa37 ranked
- Foundation repair companies in Oshawa241 ranked
- Tree services in Oshawa95 ranked
- Masonry contractors in Oshawa60 ranked
- Water damage restoration companies in Oshawa327 ranked
- Home builders in Oshawa628 ranked
- Demolition contractors in Oshawa41 ranked
- All contractors in Oshawa