220 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in Adelphi: Value Dry Basement Waterproofing, CR Score 63/100; 4.9★ from 251 Google reviews; open 24/7.
Best for emergencies (open 24/7): Value Dry Basement Waterproofing, posts 24/7 hours; ranked #3 of 220.
Most-reviewed: JES Foundation Repair, 1,929 Google reviews at 4.7★, the most of 220 ranked; ranked #7.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
220 Adelphi foundation repair companies are ranked here by CR Score, from ten published factors. 40 are open 24/7, 153 open Saturdays and 83 open Sundays, based on posted hours. The median Google rating is 4.9★ across 220 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Value Dry Basement Waterproofing | 63 | 4.9★ (251) | Arlington, 11 mi away | 24/7 | Overall |
| 2 | Tru Integrity LLC | 62 | 5.0★ (147) | Baltimore, 4 mi away | Sat · Sun · Evenings | — |
| 3 | Value Dry Basement Waterproofing | 62 | 4.7★ (334) | Odenton, 15 mi away | 24/7 | Emergencies |
| 4 | Thompson & Sons Waterproofing Inc. | 61 | 5.0★ (153) | Baltimore, 18 mi away | 24/7 | — |
| 5 | Armored Basement Waterproofing | 61 | 5.0★ (128) | Baltimore, 18 mi away | 24/7 | — |
| 6 | NV Waterproofing & Foundation Repair | 60 | 4.9★ (975) | Manassas, 35 mi away | Sat · Sun | — |
| 7 | JES Foundation Repair | 60 | 4.7★ (1,929) | Gainesville, 36 mi away | Sat · Sun · Evenings | Most reviews |
| 8 | JES Foundation Repair | 60 | 4.6★ (159) | Washington, D.C., 8 mi away | Sat · Sun · Evenings | — |
| 9 | '58 Foundations & Waterproofing | 59 | 4.7★ (367) | Arbutus, 23 mi away | Sat · Sun · Evenings | — |
| 10 | DMV Waterproofing, North Bethesda | 59 | 5.0★ (55) | Rockville, 11 mi away | Sat · Sun | — |
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.
Ranked #1 because of its Google rating and trade focus: 4.9★ from 251 Google reviews, listed on Google as “Waterproofing service”.
Based in Baltimore, 4 mi away
Ranked #2 because of its Google rating and trade focus: 5.0★ from 147 Google reviews, listed on Google as “Waterproofing service”.
Based in Odenton, 15 mi away
Ranked #3 because of its Google rating and trade focus: 4.7★ from 334 Google reviews, listed on Google as “Waterproofing service”.
Based in Baltimore, 18 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 153 Google reviews, listed on Google as “Waterproofing service”.
Based in Baltimore, 18 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
Based in Manassas, 35 mi away
Ranked #6 because of its Google rating and trade focus: 4.9★ from 975 Google reviews, listed on Google as “Waterproofing service”.
Based in Gainesville, 36 mi away
Ranked #7 because of its Google rating and review volume: 4.7★ from 1,929 Google reviews, the most in Adelphi.
Based in Washington, D.C., 8 mi away
Ranked #8 because of its Google rating and trade focus: 4.6★ from 159 Google reviews, listed on Google as “Waterproofing service”.
Based in Arbutus, 23 mi away
Ranked #9 because of its Google rating and trade focus: 4.7★ from 367 Google reviews, listed on Google as “Waterproofing service”.
Based in Rockville, 11 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Waterproofing service”.
Based in Baltimore, 20 mi away
Ranked #11 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Waterproofing service”.
Based in Arbutus, 23 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 249 Google reviews, listed on Google as “Waterproofing service”.
Based in Glenarden, 9 mi away
Ranked #13 because of its Google rating and trade focus: 4.9★ from 95 Google reviews, listed on Google as “Waterproofing service”.
Based in Washington, D.C., 8 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
Based in Baltimore, 38 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 940 Google reviews, listed on Google as “Waterproofing service”.
Based in Damascus, 24 mi away
Ranked #16 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Waterproofing service”.
Based in Annandale, 15 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Waterproofing service”.
Based in Dale City, 31 mi away
Ranked #18 because of its Google rating and trade focus: 4.7★ from 265 Google reviews, listed on Google as “Waterproofing service”.
Based in Silver Spring, 3 mi away
Ranked #19 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Waterproofing service”.
Based in Timonium, 35 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “Waterproofing service”.
Based in Arbutus, 22 mi away
Ranked #21 because of its Google rating and trade focus: 4.6★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based in Darnestown, 8 mi away
Ranked #22 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Waterproofing service”.
Based in Baltimore, 28 mi away
Ranked #23 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Waterproofing service”.
Based in Bethesda, 7 mi away
Ranked #24 because of its Google rating and review volume: 5.0★ from 113 Google reviews.
Based in Springfield, 22 mi away
Ranked #25 because of its Google rating and review volume: 4.7★ from 682 Google reviews.
National price ranges in USD, not adjusted for Adelphi. 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 220 Adelphi foundation repair companies 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 Adelphi 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 |