11 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Kingston: Universal Plumbing & Sewer Services Inc., CR Score 89/100; 4.8★ from 161 Google reviews; open 24/7.
Most-reviewed: SafeStep Building Treatments Inc, 67 Google reviews at 4.9★, the most of 11 ranked after Universal Plumbing & Sewer Services Inc.; ranked #3.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
11 Kingston foundation repair companies are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 7 open Saturdays and 4 open Sundays, based on posted hours. The median Google rating is 5.0★ across 11 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Universal Plumbing & Sewer Services Inc. | 89 | 4.8★ (161) | Kingston | 24/7 | Overall |
| 2 | Postech Screw Piles Kingston | 83 | 5.0★ (16) | Greater Napanee, 43 km away | Sat · Sun | — |
| 3 | SafeStep Building Treatments Inc | 83 | 4.9★ (67) | Kingston | — | Most reviews |
| 4 | White Rabbit Painting Company | 80 | 5.0★ (13) | Kingston | Sat · Sun · Evenings | — |
| 5 | Kingstown Exteriors | 79 | 5.0★ (10) | Kingston | Sat · Sun · Evenings | — |
| 6 | Newcon Insulated Foundations | 79 | 4.1★ (7) | Kingston | — | — |
| 7 | Loyalist Waterproofing Services Ltd. | 79 | 5.0★ (8) | Napanee, 22 km away | Sat | — |
| 8 | Valeira Construction Ltd | 77 | 5.0★ (12) | Kingston | Sat | — |
| 9 | Loyalist Construction & Landscaping Ltd. | 76 | 4.8★ (47) | Napanee, 26 km away | Sat | — |
| 10 | Wise Cracks Kingston & Ottawa | 74 | 5.0★ (20) | Napanee, 60 km away | — | — |
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Ranked #1 because of its Google rating and review volume: 4.8★ from 161 Google reviews, the most Google reviews on this list (161).
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Greater Napanee, 43 km away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 16 Google reviews, listed on Google as “Foundation”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kingston
Ranked #3 because of its Google rating and trade focus: 4.9★ from 67 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kingston
Ranked #4 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kingston
Ranked #5 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 7 days a week.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kingston
Ranked #6 because of its Google rating and trade focus: 4.1★ from 7 Google reviews, listed on Google as “Construction company”.
Based on 5 of 8 factors; credentials, recency and availability not yet collected.
Based in Napanee, 22 km away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kingston
Ranked #8 because of its Google rating and review volume: 5.0★ from 12 Google reviews, 12 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Napanee, 26 km away
Ranked #9 because of its Google rating and review volume: 4.8★ from 47 Google reviews, 47 Google reviews.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Napanee, 60 km away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
Based on 6 of 8 factors; credentials and recency not yet collected.
Based in Kingston
Ranked #11 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Excavating contractor”.
Based on 6 of 8 factors; credentials and recency not yet collected.
20 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.
US national ranges converted to CAD, not adjusted for Kingston. 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 |
We scored 11 Kingston 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 Kingston 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 |