92/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 572 Google reviews, open 24/7.
- 5.0★ from 572 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8950 MD-108 Suite 221, Columbia, MD 21045
Best Foundation Repair Companies in Gaithersburg, MD (2026)
219 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Gaithersburg: Best Buy Waterproofing, CR Score 92/100; 5.0★ from 572 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Armored Basement Waterproofing, posts 24/7 hours; ranked #2 of 219.
- 10
Most-reviewed: JES Foundation Repair, 1,929 Google reviews at 4.7★, the most of 219 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
219 Gaithersburg foundation repair companies are ranked here by CR Score, from 8 published factors. 41 are open 24/7, 151 open Saturdays and 84 open Sundays, based on posted hours. The median Google rating is 4.9★ across 219 rated businesses.
Most of this list also appears on the Foundation repair companies in Germantown ranking. See Foundation repair companies in Germantown
Top 10 foundation repair companies in Gaithersburg at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Best Buy Waterproofing | 92 | 5.0★ (572) | Columbia, 21 mi away | 24/7 | Overall |
| 2 | Armored Basement Waterproofing | 90 | 5.0★ (128) | Baltimore, 11 mi away | 24/7 | Emergencies |
| 3 | Value Dry Basement Waterproofing | 89 | 4.9★ (251) | Arlington, 21 mi away | 24/7 | — |
| 4 | Thompson & Sons Waterproofing Inc. | 89 | 5.0★ (153) | Baltimore, 23 mi away | 24/7 | — |
| 5 | Value Dry Basement Waterproofing | 87 | 4.7★ (334) | Odenton, 27 mi away | 24/7 | — |
| 6 | NV Waterproofing & Foundation Repair | 87 | 4.9★ (975) | Manassas, 31 mi away | Sat · Sun | — |
| 7 | Beyond Waterproofing and Foundation Repair | 86 | 4.9★ (120) | Damascus, 11 mi away | Sat · Sun · Evenings | — |
| 8 | Tru Integrity LLC | 86 | 5.0★ (147) | Baltimore, 18 mi away | Sat · Sun · Evenings | — |
| 9 | DMV Waterproofing, North Bethesda | 86 | 5.0★ (55) | Rockville, 5 mi away | Sat · Sun | — |
| 10 | JES Foundation Repair | 86 | 4.7★ (1,929) | Gainesville, 32 mi away | Sat · Sun · Evenings | Most reviews |
The 219 best foundation repair companies in Gaithersburg, 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 Baltimore, 11 mi away
90/100CR ScoreRanked #2 because of its Google rating and availability: 5.0★ from 128 Google reviews, open 24/7.
- 5.0★ from 128 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Arlington, 21 mi away
89/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 251 Google reviews, open 24/7.
- 4.9★ from 251 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1614 10th St S, Arlington, VA 22204
Based in Baltimore, 23 mi away
89/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 153 Google reviews, open 24/7.
- 5.0★ from 153 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Odenton, 27 mi away
87/100CR ScoreRanked #5 because of its Google rating and availability: 4.7★ from 334 Google reviews, open 24/7.
- 4.7★ from 334 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1434 Odenton Rd, Odenton, MD 21113
Based in Manassas, 31 mi away
87/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.9★ from 975 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 975 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun 10 AM–4 PM
- Address
- 12200 Livingston Rd #100, Manassas, VA 20109
Based in Damascus, 11 mi away
86/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 120 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 120 Google reviews
- Hours
- Mon–Fri 8 AM–9 PM · Sat 9 AM–9 PM · Sun 9 AM–8 PM
- Address
- 9516 Faith Ln, Damascus, MD 20872
Based in Baltimore, 18 mi away
86/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 147 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 147 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 8 AM–6 PM
Based in Rockville, 5 mi away
86/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 55 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 55 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 330 N Stonestreet Ave Unit S, Rockville, MD 20850
Based in Gainesville, 32 mi away
86/100CR ScoreRanked #10 because of its Google rating and review volume: 4.7★ from 1,929 Google reviews, the most Google reviews on this list (1,929).
- 4.7★ from 1,929 Google reviews
- Hours
- Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
- Address
- 7940 Gainsford Ct, Bristow, VA 20136
Based in Baltimore, 24 mi away
84/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.9★ from 125 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 125 Google reviews
- Hours
- Mon–Sun 8 AM–11 PM
Based in Washington, D.C., 20 mi away
84/100CR ScoreRanked #12 because of its Google rating and availability: 5.0★ from 13 Google reviews, open 24/7.
- 5.0★ from 13 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Arbutus, 29 mi away
84/100CR ScoreRanked #13 because of its Google rating and trade focus: 4.7★ from 367 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 367 Google reviews
- Hours
- Mon–Fri 8 AM–12 AM · Sat–Sun 9 AM–12 AM
- Address
- 823 N Hammonds Ferry Rd Suite D, Linthicum Heights, MD 21090
Based in Darnestown, 11 mi away
83/100CR ScoreRanked #14 because of its Google rating and availability: 4.4★ from 7 Google reviews, open 24/7.
- 4.4★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Baltimore, 33 mi away
83/100CR ScoreRanked #15 because of its Google rating and availability: 4.9★ from 33 Google reviews, open 24/7.
- 4.9★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 W Mulberry St, Baltimore, MD 21201
#16 Core Team Inc.
Based in Bethesda, 13 mi away
83/100CR ScoreRanked #16 because of its Google rating and availability: 5.0★ from 113 Google reviews, open 24/7.
- 5.0★ from 113 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4800 Hampden Ln #200, Bethesda, MD 20814
Based in Washington, D.C., 20 mi away
83/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.6★ from 159 Google reviews, listed on Google as “Waterproofing service”.
- 4.6★ from 159 Google reviews
- Hours
- Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
Based in Timonium, 37 mi away
83/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 133 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 133 Google reviews
- Hours
- Mon 8 AM–6 PM · Tue 6 AM–6 PM · Wed–Fri 8 AM–6 PM · Sat 9 AM–5 PM · Sun 10 AM–4 PM
- Address
- 1721 Kurtz Ave, Timonium, MD 21093
Based in Arbutus, 29 mi away
83/100CR ScoreRanked #19 because of its Google rating and availability: 4.6★ from 30 Google reviews, open 24/7.
- 4.6★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 516 Greenwood Rd, Linthicum Heights, MD 21090
Based in Dale City, 35 mi away
82/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.7★ from 265 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 265 Google reviews
- Hours
- Mon–Fri 8 AM–12 AM · Sat–Sun 9 AM–12 AM
- Address
- 14000 Crown Ct Unit 107, Woodbridge, VA 22193
Based in Annandale, 24 mi away
82/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 35 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 35 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun 10 AM–4 PM
Based in Walkersville, 25 mi away
82/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 7 Google reviews, open 24/7.
- 5.0★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 120 Glade Blvd, Walkersville, MD 21793
Based in Arbutus, 30 mi away
82/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 249 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 249 Google reviews
- Hours
- Mon–Thu 8 AM–8 PM · Fri 8 AM–5 PM · Sat 9 AM–5 PM · Sun closed
- Address
- 5191 Raynor Ave, Linthicum Heights, MD 21090
Based in Springfield, 28 mi away
82/100CR ScoreRanked #24 because of its Google rating and availability: 4.7★ from 682 Google reviews, open 24/7.
- 4.7★ from 682 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 7420 Fullerton Rd #100, Springfield, VA 22153
Based in Elkton, 24 mi away
82/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 29 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 29 Google reviews
- Hours
- Mon 8 AM–7 PM · Tue–Fri 7 AM–7 PM · Sat–Sun 9 AM–5 PM
How much do foundation repair companies cost in Gaithersburg?
National price ranges in USD, not adjusted for Gaithersburg. 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 |
How we ranked Gaithersburg foundation repair companies
We scored 219 Gaithersburg 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 Gaithersburg 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 Gaithersburg: frequently asked questions
Who is the best foundation repair company in Gaithersburg?
By CR Score, the highest-ranked foundation repair company in Gaithersburg, MD is Best Buy Waterproofing with a CR Score of 92/100. It has 5.0★ from 572 Google reviews. It is open 24/7. Armored Basement Waterproofing (#2) and Value Dry Basement Waterproofing (#3) follow. We ranked 219 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in Gaithersburg?
ContractorsRanked ranks 219 foundation repair companies serving Gaithersburg, MD. Counts are as of October 2026.
Which foundation repair companies in Gaithersburg are open 24/7?
41 ranked foundation repair companies in Gaithersburg post 24/7 hours. The highest-ranked are Best Buy Waterproofing (#1), Armored Basement Waterproofing (#2) and Value Dry Basement Waterproofing (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Gaithersburg work on weekends?
151 of 219 ranked foundation repair companies post Saturday hours and 84 post Sunday hours. The highest-ranked open Saturdays are Best Buy Waterproofing (#1), Armored Basement Waterproofing (#2) and Value Dry Basement Waterproofing (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Gaithersburg?
Foundation repair typically costs $2,225 to $8,133, with $5,174 typical (Per project: typical range of customer-reported repairs. US national range). This is a national range, not adjusted for Gaithersburg. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Gaithersburg foundation repair companies have?
The median Google rating among 219 rated foundation repair companies in Gaithersburg is 4.9★, with a median of 32 reviews. JES Foundation Repair has the most, 1,929 reviews, and ranks #10. 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 Gaithersburg count in this ranking?
Yes, if they are within 40 mi of the Gaithersburg city center, 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 Gaithersburg
- October 2026: CR Scores recalculated for 219 foundation repair companies serving Gaithersburg.
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