63/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 128 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 128 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Best Foundation Repair Companies in Ashton-Sandy Spring, MD (2026)
221 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Ashton-Sandy Spring: Armored Basement Waterproofing, CR Score 63/100; 5.0★ from 128 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Thompson & Sons Waterproofing Inc., posts 24/7 hours; ranked #2 of 221.
- 10
Most-reviewed: JES Foundation Repair, 1,929 Google reviews at 4.7★, the most of 221 ranked; ranked #10.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
221 Ashton-Sandy Spring foundation repair companies are ranked here by CR Score, from ten published factors. 40 are open 24/7, 155 open Saturdays and 84 open Sundays, based on posted hours. The median Google rating is 4.9★ across 221 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 Ashton-Sandy Spring at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Armored Basement Waterproofing | 63 | 5.0★ (128) | Baltimore, 7 mi away | 24/7 | Overall |
| 2 | Thompson & Sons Waterproofing Inc. | 62 | 5.0★ (153) | Baltimore, 13 mi away | 24/7 | Emergencies |
| 3 | Value Dry Basement Waterproofing | 62 | 4.9★ (251) | Arlington, 20 mi away | 24/7 | — |
| 4 | Value Dry Basement Waterproofing | 62 | 4.7★ (334) | Odenton, 16 mi away | 24/7 | — |
| 5 | Tru Integrity LLC | 60 | 5.0★ (147) | Baltimore, 14 mi away | Sat · Sun · Evenings | — |
| 6 | '58 Foundations & Waterproofing | 60 | 4.7★ (367) | Arbutus, 19 mi away | Sat · Sun · Evenings | — |
| 7 | Beyond Waterproofing and Foundation Repair | 60 | 4.9★ (120) | Damascus, 15 mi away | Sat · Sun · Evenings | — |
| 8 | DMV Waterproofing, North Bethesda | 59 | 5.0★ (55) | Rockville, 9 mi away | Sat · Sun | — |
| 9 | NV Waterproofing & Foundation Repair | 59 | 4.9★ (975) | Manassas, 39 mi away | Sat · Sun | — |
| 10 | JES Foundation Repair | 59 | 4.7★ (1,929) | Gainesville, 40 mi away | Sat · Sun · Evenings | Most reviews |
The 221 best foundation repair companies in Ashton-Sandy Spring, ranked
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.
Based in Baltimore, 13 mi away
62/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 153 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 153 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Arlington, 20 mi away
62/100CR ScoreRanked #3 because of its Google rating and trade focus: 4.9★ from 251 Google reviews, listed on Google as “Waterproofing service”.
- 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 Odenton, 16 mi away
62/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.7★ from 334 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 334 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1434 Odenton Rd, Odenton, MD 21113
Based in Baltimore, 14 mi away
60/100CR ScoreRanked #5 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 Arbutus, 19 mi away
60/100CR ScoreRanked #6 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 Damascus, 15 mi away
60/100CR 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 Rockville, 9 mi away
59/100CR ScoreRanked #8 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 Manassas, 39 mi away
59/100CR ScoreRanked #9 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 Gainesville, 40 mi away
59/100CR ScoreRanked #10 because of its Google rating and review volume: 4.7★ from 1,929 Google reviews, the most in Ashton-Sandy Spring.
- 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, 33 mi away
59/100CR ScoreRanked #11 because of its Google rating and trade focus: 4.7★ from 940 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 940 Google reviews
- Hours
- Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
- Address
- 8361 Town Center Ct, Nottingham, MD 21236
Based in Arbutus, 19 mi away
59/100CR ScoreRanked #12 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 Washington, D.C., 18 mi away
58/100CR ScoreRanked #13 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, 28 mi away
58/100CR ScoreRanked #14 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 Baltimore, 27 mi away
58/100CR ScoreRanked #15 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 Darnestown, 3 mi away
58/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Waterproofing service”.
- 4.4★ from 7 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Baltimore, 23 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 33 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 33 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 110 W Mulberry St, Baltimore, MD 21201
Based in Arbutus, 19 mi away
57/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.6★ from 30 Google reviews, listed on Google as “Waterproofing service”.
- 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 Glenarden, 18 mi away
57/100CR ScoreRanked #19 because of its Google rating and trade focus: 4.9★ from 95 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 95 Google reviews
- Hours
- Mon–Sat 7 AM–9 PM · Sun closed
- Address
- 9103 Woodmore Center Dr, Glenarden, MD 20706
Based in Odenton, 17 mi away
57/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 245 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 245 Google reviews
- Hours
- Mon–Fri 8 AM–5 PM · Sat–Sun closed
- Address
- 1717 Midway Rd, Odenton, MD 21113
Based in Baltimore, 23 mi away
57/100CR ScoreRanked #21 because of its Google rating and trade focus: 4.8★ from 72 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 72 Google reviews
- Hours
- Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
- Address
- 10 W Eager St Ste 313, Baltimore, MD 21201
Based in Washington, D.C., 18 mi away
57/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 13 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 13 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Dale City, 38 mi away
56/100CR ScoreRanked #23 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 Pasadena, 25 mi away
56/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.9★ from 47 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 47 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat 9 AM–3 PM · Sun 9 AM–12 PM
- Address
- 3236 Mountain Rd, Pasadena, MD 21122
Based in Annandale, 24 mi away
56/100CR ScoreRanked #25 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
How much do foundation repair companies cost in Ashton-Sandy Spring?
National price ranges in USD, not adjusted for Ashton-Sandy Spring. 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 Ashton-Sandy Spring foundation repair companies
We scored 221 Ashton-Sandy Spring 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 Ashton-Sandy Spring 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 |
Foundation repair companies in Ashton-Sandy Spring: frequently asked questions
Who is the best foundation repair company in Ashton-Sandy Spring?
By CR Score, the highest-ranked foundation repair company in Ashton-Sandy Spring, MD is Armored Basement Waterproofing with a CR Score of 63/100. It has 5.0★ from 128 Google reviews. It is open 24/7. Thompson & Sons Waterproofing Inc. (#2) and Value Dry Basement Waterproofing (#3) follow. We ranked 221 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Ashton-Sandy Spring?
ContractorsRanked ranks 221 foundation repair companies serving Ashton-Sandy Spring, MD. Counts are as of October 2026.
Which foundation repair companies in Ashton-Sandy Spring are open 24/7?
40 ranked foundation repair companies in Ashton-Sandy Spring post 24/7 hours. The highest-ranked are Armored Basement Waterproofing (#1), Thompson & Sons Waterproofing Inc. (#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 Ashton-Sandy Spring work on weekends?
155 of 221 ranked foundation repair companies post Saturday hours and 84 post Sunday hours. The highest-ranked open Saturdays are Armored Basement Waterproofing (#1), Thompson & Sons Waterproofing Inc. (#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 Ashton-Sandy Spring?
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 Ashton-Sandy Spring. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Ashton-Sandy Spring foundation repair companies have?
The median Google rating among 221 rated foundation repair companies in Ashton-Sandy Spring 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 ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do foundation repair companies outside Ashton-Sandy Spring count in this ranking?
Yes, if they are within 40 mi of the Ashton-Sandy Spring 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 Ashton-Sandy Spring
- October 2026: CR Scores recalculated for 221 foundation repair companies serving Ashton-Sandy Spring.
- October 2026: 1 duplicate listing merged.
More foundation repair companies and Ashton-Sandy Spring pages
Foundation repair companies near Ashton-Sandy Spring
- Foundation repair companies in Cloverly, MD223 ranked
- Foundation repair companies in Olney, MD222 ranked
- Foundation repair companies in Layhill, MD222 ranked
- Foundation repair companies in Burtonsville, MD221 ranked
- Foundation repair companies in Leisure World, MD222 ranked
- Foundation repair companies in Rossmoor, MD222 ranked
- Foundation repair companies in Colesville, MD223 ranked
- Foundation repair companies in Scaggsville, MD214 ranked
- Foundation repair companies in Fairland, MD222 ranked
- Foundation repair companies in Aspen Hill, MD222 ranked
Other trades in Ashton-Sandy Spring
- Roofers in Ashton-Sandy Spring1536 ranked
- Plumbers in Ashton-Sandy Spring740 ranked
- Electricians in Ashton-Sandy Spring606 ranked
- HVAC contractors in Ashton-Sandy Spring971 ranked
- General contractors in Ashton-Sandy Spring1481 ranked
- Painters in Ashton-Sandy Spring322 ranked
- Landscapers in Ashton-Sandy Spring344 ranked
- Handymen in Ashton-Sandy Spring212 ranked
- Kitchen remodelers in Ashton-Sandy Spring998 ranked
- Bathroom remodelers in Ashton-Sandy Spring985 ranked
- Flooring contractors in Ashton-Sandy Spring624 ranked
- Tile installers in Ashton-Sandy Spring68 ranked
- Drywall contractors in Ashton-Sandy Spring16 ranked
- Concrete contractors in Ashton-Sandy Spring341 ranked
- Fence contractors in Ashton-Sandy Spring160 ranked
- Deck builders in Ashton-Sandy Spring435 ranked
- Siding contractors in Ashton-Sandy Spring685 ranked
- Window installers in Ashton-Sandy Spring688 ranked
- Gutter installers in Ashton-Sandy Spring318 ranked
- Insulation contractors in Ashton-Sandy Spring112 ranked
- Solar installers in Ashton-Sandy Spring192 ranked
- Garage door repair companies in Ashton-Sandy Spring152 ranked
- Tree services in Ashton-Sandy Spring319 ranked
- Masonry contractors in Ashton-Sandy Spring277 ranked
- Water damage restoration companies in Ashton-Sandy Spring890 ranked
- Home builders in Ashton-Sandy Spring830 ranked
- Demolition contractors in Ashton-Sandy Spring126 ranked
- All contractors in Ashton-Sandy Spring