64 general contractors ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Sarnia: Washington Pools and Spas, CR Score 63/100; 4.6★ from 71 Google reviews; open Saturdays until 2 PM.
Best for emergencies (open 24/7): Sarnia Sewer & Drainage, posts 24/7 hours; ranked #5 of 64.
Most-reviewed: Diamond Exterior & Design Llc, 49 Google reviews at 5.0★, the most of 64 ranked after Washington Pools and Spas; ranked #12.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
64 Sarnia general contractors are ranked here by CR Score, from ten published factors. 5 are open 24/7, 17 open Saturdays and 7 open Sundays, based on posted hours. The median Google rating is 4.7★ across 64 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Washington Pools and Spas | 63 | 4.6★ (71) | Sarnia | Sat | Overall |
| 2 | Carosyl Home Additions Inc. | 61 | 4.8★ (30) | Sarnia | Sat | — |
| 3 | Westerly Shores Renovations | 61 | 5.0★ (41) | Sarnia | — | — |
| 4 | Estate of Mind Builders LLC | 61 | 5.0★ (21) | Sarnia | Sat | — |
| 5 | Sarnia Sewer & Drainage | 60 | 5.0★ (5) | Sarnia | 24/7 | Emergencies |
| 6 | Langolf Construction L.L.C. | 59 | 5.0★ (4) | Sarnia | 24/7 | — |
| 7 | Daniel Samson Builder, LLC | 59 | 5.0★ (15) | Port Huron, 3 km away | Sat | — |
| 8 | Joe Van Reenen Construction | 58 | 4.6★ (9) | Sarnia | — | — |
| 9 | Robison Building & Remodeling LLC. | 58 | 5.0★ (19) | Port Huron, 14 km away | Sat | — |
| 10 | Curran Contractors Ltd. | 58 | 4.3★ (3) | Sarnia | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.6★ from 71 Google reviews, the most in Sarnia.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #2 because of its Google rating and trade focus: 4.8★ from 30 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #3 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #4 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #5 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #6 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 3 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 15 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #8 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “General contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Port Huron, 14 km away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 19 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #10 because of its Google rating and trade focus: 4.3★ from 3 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #11 because of its Google rating and trade focus: 4.0★ from 11 Google reviews, listed on Google as “Construction company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in New Baltimore, 36 km away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Norwalk, 28 km away
Ranked #13 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Port Huron, 9 km away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #15 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #16 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Construction company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Sarnia
Ranked #17 because of its Google rating and trade focus: 4.7★ from 13 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #18 because of its Google rating and trade focus: 5.0★ from 10 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in New Baltimore, 39 km away
Ranked #19 because of its Google rating and trade focus: 4.7★ from 27 Google reviews, listed on Google as “Contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #20 because of its Google rating and trade focus: 4.9★ from 9 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #21 because of its Google rating and trade focus: 4.5★ from 4 Google reviews, listed on Google as “General contractor”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Sarnia
Ranked #22 because of its Google rating and trade focus: 4.1★ from 10 Google reviews, listed on Google as “Construction company”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #23 because of its Google rating and trade focus: 4.8★ from 9 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
Based in Sarnia
Ranked #24 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Construction company”.
Based on 7 of 10 factors; credentials, recency and availability not yet collected.
Based in Sarnia
Ranked #25 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “General contractor”.
Based on 8 of 10 factors; credentials and recency not yet collected.
#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 64 ranked general contractors here; the rest are on their profiles.
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 |
|---|---|---|
| A. Webster Sewer & Drain | 4.9★ (76) | In Sarnia |
| Anderson Braga Drywall Service & More | 5.0★ (41) | In Sarnia |
| Certified Seamless Guttering | 4.2★ (26) | In Sarnia |
| Concrete By Design | 5.0★ (17) | In Sarnia |
| DMC Custom Creations | 5.0★ (43) | In Sarnia |
| Durston Custom Contracting | 4.8★ (22) | In Sarnia |
| Elite Property Group | 3.0★ (41) | In Sarnia |
| Exterior Experts of Michigan, Inc. | 4.9★ (121) | In Sarnia |
| Frazer Building Company | 4.5★ (98) | In Sarnia |
| Henderson Fence | 4.9★ (91) | In Sarnia |
| KD Exterior Building Products | 4.0★ (30) | In Sarnia |
| Lambton Sanitation | 5.0★ (309) | In Sarnia |
| Mike Hayes Roofing & Siding | 4.3★ (43) | In Sarnia |
| Miller Brothers Mini Excavation | 4.4★ (47) | In Sarnia |
| MSC Floors - Industrial Epoxy Flooring | 5.0★ (64) | In Sarnia |
| North Star Restorations Ltd. | 5.0★ (18) | In Sarnia |
| Southwest Fence & Decks | 4.4★ (108) | In Sarnia |
| TNS Gutters | 4.6★ (18) | In Sarnia |
| Ward Construction | 4.5★ (18) | In Sarnia |
| William Standen Co. | 4.5★ (27) | In Sarnia |
US national ranges converted to CAD, not adjusted for Sarnia. 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 |
We scored 64 Sarnia 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 Sarnia 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 |