5 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Plattsburgh: Twin State Basement Services, CR Score 83/100; 4.9★ from 94 Google reviews.
Best for emergencies (open 24/7): Guayacan Home Improvement, posts 24/7 hours; ranked #2 of 5.
Most-reviewed: RSC Building, 22 Google reviews at 5.0★, the most of 5 ranked after Twin State Basement Services; ranked #4.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
5 Plattsburgh foundation repair companies are ranked here by CR Score, from 8 published factors. 1 is open 24/7, 2 open Saturdays and 1 open Sundays, based on posted hours. The median Google rating is 5.0★ across 5 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Twin State Basement Services | 83 | 4.9★ (94) | Colchester, 16 mi away | — | Overall |
| 2 | Guayacan Home Improvement | 78 | 5.0★ (4) | Colchester, 16 mi away | 24/7 | Emergencies |
| 3 | Green Mountain Foundation Repair Experts | 71 | 4.0★ (4) | Burlington, 20 mi away | Sat · Evenings | — |
| 4 | RSC Building | 70 | 5.0★ (22) | Burlington, 29 mi away | — | Most reviews |
| 5 | All Terrain Excavating | 69 | 5.0★ (13) | South Burlington, 21 mi away | — | — |
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.
Ranked #1 because of its Google rating and review volume: 4.9★ from 94 Google reviews, the most Google reviews on this list (94).
Based in Colchester, 16 mi away
Ranked #2 because of its Google rating and availability: 5.0★ from 4 Google reviews, open 24/7.
Based in Burlington, 20 mi away
Ranked #3 because of its Google rating and trade focus: 4.0★ from 4 Google reviews, listed on Google as “Concrete contractor”.
Based in Burlington, 29 mi away
Ranked #4 because of its Google rating and review volume: 5.0★ from 22 Google reviews, 22 Google reviews.
Based in South Burlington, 21 mi away
Ranked #5 because of its Google rating and review volume: 5.0★ from 13 Google reviews, 13 Google reviews.
National price ranges in USD, not adjusted for Plattsburgh. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | $2,225 | $5,174 | $8,133 | Per project: typical range of customer-reported repairs. US national range | October 2026 |
We scored 5 Plattsburgh 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 Plattsburgh 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 |