83/100CR Score
Ranked #1 because of its Google rating and availability: 4.9★ from 63 Google reviews, open 24/7.
- 4.9★ from 63 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 48 Upney Dr, Nepean, ON K2J 5G7
Best Foundation Repair Companies in Perth, ON (2026)
42 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Perth: Simonz Roofing & Waterproofing, CR Score 83/100; 4.9★ from 63 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Dr. Pipe Drain and Plumbing, posts 24/7 hours; ranked #2 of 42.
- 6
Most-reviewed: Vanity Roofing Ottawa, 243 Google reviews at 4.7★, the most of 42 ranked; ranked #6.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
42 Perth foundation repair companies are ranked here by CR Score, from 8 published factors. 6 are open 24/7, 25 open Saturdays and 18 open Sundays, based on posted hours. The median Google rating is 5.0★ across 42 rated businesses.
Top 10 foundation repair companies in Perth at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Simonz Roofing & Waterproofing | 83 | 4.9★ (63) | Nepean, 59 km away | 24/7 | Overall |
| 2 | Dr. Pipe Drain and Plumbing | 81 | 5.0★ (65) | Nepean, 56 km away | 24/7 | Emergencies |
| 3 | Century building restorations | 81 | 5.0★ (9) | Brockville, 57 km away | 24/7 | — |
| 4 | 911 Foundation Repair Services | 80 | 4.5★ (19) | Kanata, 49 km away | Sat · Sun | — |
| 5 | Summit Drain & Plumbing Ottawa | 80 | 5.0★ (123) | Kanata, 53 km away | Sat · Sun · Evenings | — |
| 6 | Vanity Roofing Ottawa | 80 | 4.7★ (243) | Kanata, 50 km away | Sat · Sun · Evenings | Most reviews |
| 7 | PARGING PROS CORP | 80 | 5.0★ (73) | Kanata, 39 km away | Sat · Sun · Evenings | — |
| 8 | Mini x foundation waterproofing | 79 | 5.0★ (8) | Smiths Falls, 10 km away | Sat | — |
| 9 | Ottawa Foundation Repair Specialists | 78 | 5.0★ (6) | Ottawa, 49 km away | Sat · Sun | — |
| 10 | Ardel Concrete Services | 78 | 4.9★ (35) | Ottawa, 35 km away | Sat · Sun · Evenings | — |
The 42 best foundation repair companies in Perth, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Nepean, 56 km away
81/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 65 Google reviews, open 24/7.
- 5.0★ from 65 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 168 Point Prim Cres, Nepean, ON K2J 6P6
Based in Brockville, 57 km away
81/100CR ScoreRanked #3 because of its Google rating and availability: 5.0★ from 9 Google reviews, open 24/7.
- 5.0★ from 9 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1888 County Rd 2 unit 3, Brockville, ON K6V 5T1
Based in Kanata, 49 km away
80/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.5★ from 19 Google reviews, listed on Google as “Waterproofing service”.
- 4.5★ from 19 Google reviews
- Hours
- Mon–Sun 7 AM–5 PM
- Address
- 8 Sweetnam Dr, Stittsville, ON K2S 1G2
Based in Kanata, 53 km away
80/100CR ScoreRanked #5 because of its Google rating and review volume: 5.0★ from 123 Google reviews, 123 Google reviews.
- 5.0★ from 123 Google reviews
- Hours
- Mon–Fri 7 AM–9 PM · Sat–Sun 9 AM–5 PM
- Address
- 70 McDermot Ct, Kanata, ON K2L 3V5
Based in Kanata, 50 km away
80/100CR ScoreRanked #6 because of its Google rating and review volume: 4.7★ from 243 Google reviews, the most Google reviews on this list (243).
- 4.7★ from 243 Google reviews
- Hours
- Mon–Fri 6:30 AM–9 PM · Sat 8 AM–9 PM · Sun 10 AM–5 PM
- Address
- 2838 Carp Rd Unit 3, Carp, ON K0A 1L0
Based in Kanata, 39 km away
80/100CR ScoreRanked #7 because of its Google rating and review volume: 5.0★ from 73 Google reviews, 73 Google reviews.
- 5.0★ from 73 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
Based in Smiths Falls, 10 km away
79/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 8 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 233 Station Rd, Smiths Falls, ON K7A 4S4
Based in Ottawa, 49 km away
78/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Sun 7 AM–5 PM
Based in Ottawa, 35 km away
78/100CR ScoreRanked #10 because of its Google rating and availability: 4.9★ from 35 Google reviews, open 7 days a week.
- 4.9★ from 35 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 8435 Copeland Rd, Ottawa, ON K0A 1B0
Based in Nepean, 52 km away
77/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 86 Google reviews, listed on Google as “Foundation”.
- 4.9★ from 86 Google reviews
- Hours
- Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
#12 MyDeck.ca
Based in Kanata, 52 km away
77/100CR ScoreRanked #12 because of its Google rating and review volume: 4.9★ from 70 Google reviews, 70 Google reviews.
- 4.9★ from 70 Google reviews
- Hours
- Mon–Sun 9 AM–5 PM
Based in Kanata, 54 km away
77/100CR ScoreRanked #13 because of its Google rating and availability: 4.9★ from 30 Google reviews, open 24/7.
- 4.9★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 51 Peary Way, Kanata, ON K2L 1Z9
Based in Napanee, 18 km away
77/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 20 Google reviews
- Hours
- Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
Based in Kanata, 52 km away
77/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.9★ from 78 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 78 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
Based in Bells Corners, 52 km away
76/100CR ScoreRanked #16 because of its Google rating and availability: 4.8★ from 54 Google reviews, open 7 days a week.
- 4.8★ from 54 Google reviews
- Hours
- Mon–Fri 9 AM–8 PM · Sat–Sun 10 AM–6 PM
Based in Ottawa, 47 km away
76/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 43 Google reviews, listed on Google as “Concrete contractor”.
- 5.0★ from 43 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 8 AM–12 PM · Sun closed
- Address
- 61 Norway Spruce St, Ottawa, ON K2S 1P8
Based in Perth
75/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 4 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
Based in Clarence-Rockland, 52 km away
75/100CR ScoreRanked #19 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 7 days a week.
- 5.0★ from 10 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
Based in Kanata, 64 km away
75/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 11 Google reviews, open 24/7.
- 5.0★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 507 Rue Gordon, Gatineau, QC J9H 5L3
Based in Ottawa, 63 km away
75/100CR ScoreRanked #21 because of its Google rating and availability: 4.9★ from 42 Google reviews, open 7 days a week.
- 4.9★ from 42 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun 9 AM–5 PM
- Address
- 1178 Checkers Rd, Ottawa, ON K2C 2S7
Based in Ottawa, 50 km away
74/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
- 5.0★ from 4 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 425 Warmstone Dr, Ottawa, ON K2S 0W2
Based in Renfrew, 51 km away
73/100CR ScoreRanked #23 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 7 days a week.
- 5.0★ from 13 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat–Sun 8 AM–5 PM
Based in Kanata, 48 km away
73/100CR ScoreRanked #24 because of its Google rating and review volume: 5.0★ from 34 Google reviews, 34 Google reviews.
- 5.0★ from 34 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 9 AM–5 PM · Sun closed
Based in Ottawa, 60 km away
73/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Construction company”.
- 5.0★ from 21 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–4 PM · Sun closed
- Address
- 3 Fairfield St, Ottawa, ON K2H 5J7
All 42 foundation repair companies
#1 to #25 are shown in full above. Here are #26 to #42, in CR Score order; each links to its profile.
| Rank | Business | CR Score | Google rating | Distance |
|---|---|---|---|---|
| 26 | Ottawa Waterproofing & Construction | 73 | 3.7★ (3) | 52 km |
| 27 | Pro-Core Foundation Repair Ottawa | 72 | 5.0★ (11) | 64 km |
| 28 | Majestic Asphalt Paving | 71 | 4.7★ (15) | 52 km |
| 29 | Ottawa Structural Residential Services Ltd | 70 | 4.2★ (20) | 63 km |
| 30 | EC Foundations | 70 | 4.9★ (51) | 64 km |
| 31 | The Foundation Guys Inc. | 70 | 4.3★ (184) | 57 km |
| 32 | Fait Construction Inc. | 70 | 4.6★ (27) | 61 km |
| 33 | Ottawa Foundation Inc. | 68 | 5.0★ (4) | 64 km |
| 34 | Dumont Foundations & Interlock | 67 | 4.0★ (18) | 49 km |
| 35 | Westboro Foundation Repair Ltd. | 67 | 5.0★ (6) | 52 km |
| 36 | Vinyl Decking Ottawa | 67 | 4.8★ (21) | 52 km |
| 37 | Carbon tile and finish | 66 | 5.0★ (18) | 52 km |
| 38 | Precise Post Ottawa- Deck Post Foundation Specialists | 65 | 5.0★ (4) | 52 km |
| 39 | EAVESTROUGH SERVICES | 65 | 5.0★ (4) | 57 km |
| 40 | Capital Foundation & Waterproofing Ltd | 65 | 3.2★ (13) | 49 km |
| 41 | Membranix Coatings Inc. | 65 | 4.8★ (16) | 59 km |
| 42 | Kovar Roofing Ottawa | 62 | 4.0★ (4) | 59 km |
Also serving Perth
8 more foundation repair companies within 64 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 |
|---|---|---|
| Abellostone Masonry | 5.0★ (1) | 58 km |
| Affordable Foundation Repair | 5.0★ (1) | 46 km |
| Bottoms Up Construction ltd | 18 km | |
| Foundation Repairman | 4.0★ (1) | 18 km |
| Hall's Masonry & Forming Ltd. | 3.0★ (2) | In Perth |
| Kemforte Systems | In Perth | |
| Mirehouse Parging Services | 5.0★ (2) | In Perth |
| Poly-N-Jex Ltd | 5.0★ (1) | In Perth |
How much do foundation repair companies cost in Perth?
US national ranges converted to CAD, not adjusted for Perth. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | CA$3,130 | CA$7,270 | CA$11,430 | Per project: typical range of customer-reported repairs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026) | October 2026 |
How we ranked Perth foundation repair companies
We scored 42 Perth foundation repair companies on 8 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. Unknown factors are left out of the score, 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 Perth data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Foundation repair companies in Perth: frequently asked questions
Who is the best foundation repair company in Perth?
By CR Score, the highest-ranked foundation repair company in Perth, ON is Simonz Roofing & Waterproofing with a CR Score of 83/100. It has 4.9★ from 63 Google reviews. It is open 24/7. Dr. Pipe Drain and Plumbing (#2) and Century building restorations (#3) follow. We ranked 42 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in Perth?
ContractorsRanked ranks 42 foundation repair companies serving Perth, ON. 1 of them is based in Perth; the rest serve it from nearby towns. Another 8 within 64 km are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Perth are open 24/7?
6 ranked foundation repair companies in Perth post 24/7 hours. The highest-ranked are Simonz Roofing & Waterproofing (#1), Dr. Pipe Drain and Plumbing (#2) and Century building restorations (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Perth work on weekends?
25 of 42 ranked foundation repair companies post Saturday hours and 18 post Sunday hours. The highest-ranked open Saturdays are Simonz Roofing & Waterproofing (#1), Dr. Pipe Drain and Plumbing (#2) and Century building restorations (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Perth?
Foundation repair typically costs CA$3,130 to CA$11,430, with CA$7,270 typical (Per project: typical range of customer-reported repairs. US national range converted at 1.4054 CAD per USD (Bank of Canada, October 20, 2026)). This is a national range, not adjusted for Perth. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Perth foundation repair companies have?
The median Google rating among 42 rated foundation repair companies in Perth is 5.0★, with a median of 20 reviews. Vanity Roofing Ottawa has the most, 243 reviews, and ranks #6. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank foundation repair companies?
Each foundation repair company gets a 0–100 CR Score from 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do foundation repair companies outside Perth count in this ranking?
Yes, if they are within 64 km of the Perth city centre, our service radius for foundation repair companies. 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 Perth
- October 2026: CR Scores recalculated for 42 foundation repair companies serving Perth.
- October 2026: 1 duplicate listing merged.
More foundation repair companies and Perth pages
Foundation repair companies near Perth
- Foundation repair companies in Smiths Falls, ON54 ranked
- Foundation repair companies in Carleton Place, ON62 ranked
- Foundation repair companies in Kanata, ON66 ranked
- Foundation repair companies in Brockville, ON9 ranked
- Foundation repair companies in Bells Corners, ON66 ranked
- Foundation repair companies in Arnprior, ON56 ranked
- Foundation repair companies in Gananoque, ON13 ranked
- Foundation repair companies in Nepean, ON66 ranked
- Foundation repair companies in Ottawa, ON65 ranked
- Foundation repair companies in Renfrew, ON12 ranked
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