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ContractorsRanked

Best Foundation Repair Companies in Charter Oak, CA (2026)

240 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Charter Oak: Green Ladder Roofing and Waterproofing, CR Score 88/100; 5.0★ from 258 Google reviews; open 24/7.

  2. 2

    Best for emergencies (open 24/7): Professional Foundation Repair, posts 24/7 hours; ranked #2 of 240.

  3. 11

    Most-reviewed: Home Renew 360 Roofing I Construction I Energy, 705 Google reviews at 4.8★, the most of 240 ranked; ranked #11.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

240 Charter Oak foundation repair companies are ranked here by CR Score, from 8 published factors. 34 are open 24/7, 155 open Saturdays and 96 open Sundays, based on posted hours. The median Google rating is 5.0★ across 240 rated businesses.

Top 10 foundation repair companies in Charter Oak at a glance

Top 10 foundation repair companies in Charter Oak at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Green Ladder Roofing and Waterproofing885.0★ (258)Pasadena, 17 mi away24/7Overall
2Professional Foundation Repair854.9★ (216)Garden Grove, 24 mi away24/7Emergencies
3Pro-Seal Systems835.0★ (9)Glendora, 2 mi awaySat · Sun—
4Cabral Roofing & Waterproofing824.6★ (9)San Dimas, 2 mi away24/7—
5Infinity Shower Pans825.0★ (17)Whittier, 16 mi awaySat · Sun · Evenings—
6Easy Builders Construction825.0★ (21)Glendora, 2 mi away24/7—
7Dalinghaus Foundation Repair815.0★ (53)Irvine, 33 mi away24/7—
8LA Foundation Repair Los Angeles815.0★ (34)Beverly Hills, 33 mi away24/7—
9Groundworks804.9★ (135)Ontario, 13 mi awaySat · Sun · Evenings—
10CBS Construction Services804.9★ (15)Huntington Beach, 27 mi awaySat · Sun · Evenings—

The 240 best foundation repair companies in Charter Oak, 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.

  3. #3 Pro-Seal Systems

    Based in Glendora, 2 mi away

    83/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 9 Google reviews, listed on Google as “Waterproofing service”.

    • 5.0★ from 9 Google reviews
    Hours
    Mon–Sun 8 AM–4 PM
    Address
    307 S Vermont Ave # H, Glendora, CA 91741
    View profile for Pro-Seal Systems(626) 278-0085

  9. #9 Groundworks

    Based in Ontario, 13 mi away

    80/100CR Score

    Ranked #9 because of its Google rating and availability: 4.9★ from 135 Google reviews, open 7 days a week.

    • 4.9★ from 135 Google reviews
    Hours
    Mon–Fri 4 AM–8 PM · Sat 5 AM–8 PM · Sun 7 AM–8 PM
    Address
    1850 S Parco Ave, Ontario, CA 91761
    View profile for Groundworks(909) 220-5664

  10. #10 CBS Construction Services

    Based in Huntington Beach, 27 mi away

    80/100CR Score

    Ranked #10 because of its Google rating and trade focus: 4.9★ from 15 Google reviews, listed on Google as “Waterproofing service”.

    • 4.9★ from 15 Google reviews
    Hours
    Mon–Fri 6 AM–7 PM · Sat–Sun 8 AM–2 PM
    Address
    15571 Producer Ln suite h, Huntington Beach, CA 92649
    View profile for CBS Construction Services(714) 840-2000

  15. #15 Green Advisor Inc.

    Based in Los Angeles, 29 mi away

    80/100CR Score

    Ranked #15 because of its Google rating and review volume: 5.0★ from 253 Google reviews, 253 Google reviews.

    • 5.0★ from 253 Google reviews
    Hours
    Mon–Fri 8 AM–7 PM · Sat 9 AM–5 PM · Sun 8 AM–7 PM
    Address
    7660 Beverly Blvd, Los Angeles, CA 90036
    View profile for Green Advisor Inc.(888) 869-0987

  19. #19 Kaliber Roofing Inc

    Based in Montclair, 10 mi away

    79/100CR Score

    Ranked #19 because of its Google rating and availability: 4.8★ from 82 Google reviews, open 7 days a week.

    • 4.8★ from 82 Google reviews
    Hours
    Mon–Sat 6 AM–7 PM · Sun 9 AM–1 PM
    Address
    11182 Poulsen Ave, Montclair, CA 91763
    View profile for Kaliber Roofing Inc(909) 631-0310

  21. #21 Horizon Roofing

    Based in Irvine, 29 mi away

    79/100CR Score

    Ranked #21 because of its Google rating and availability: 4.8★ from 59 Google reviews, open 24/7.

    • 4.8★ from 59 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2030 Main St # 1300, Irvine, CA 92614
    View profile for Horizon Roofing(714) 328-1967

Foundation repair companies ranked #26 to #50

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 240 ranked foundation repair companies here; the rest are on their profiles.

foundation repair companies in Charter Oak, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26Francisco's Roofing Inc.784.9★ (92)21 mi
27True Price Roofing785.0★ (30)10 mi
28Waterproofing N Roofing - IHC Group785.0★ (44)37 mi
29DuraRoof Solutions | Commercial and Residential Roofing785.0★ (24)30 mi
30Alonzo Roofing & Waterproofing Inc774.0★ (4)22 mi
31Alpha Structural, Inc.774.8★ (194)29 mi
32Attic Masters Insulation Services774.8★ (48)36 mi
33La Habra Top Roofing775.0★ (26)13 mi
34Smart Price Roofing775.0★ (36)18 mi
35DK Shower Pans775.0★ (10)18 mi
36Red Turtle Roofing of Fullerton775.0★ (31)29 mi
37Build Foundation - West Covina775.0★ (3)5 mi
38Watershield Roofing Co775.0★ (24)34 mi
39ZeroVap775.0★ (27)36 mi
40Double Eagle Roofing & Waterproofing765.0★ (3)29 mi
41Commerce Roofing Company765.0★ (28)19 mi
42Immaculate Services765.0★ (26)18 mi
43Concrete & Foundation Repair764.9★ (60)33 mi
44Commerce Roofing Firm765.0★ (28)19 mi
45Gaveet Waterproofing & Restoration764.7★ (10)24 mi
46Fair Price Roofing764.8★ (17)11 mi
47Money Wise Roofers765.0★ (24)18 mi
48Pomona Roofing Group765.0★ (9)6 mi
49Daniel's Roofing & Waterproofing765.0★ (4)26 mi
50California Decking & Waterproofing764.6★ (48)31 mi

Also serving Charter Oak

20 more foundation repair companies within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.

Unranked foundation repair companies serving Charter Oak
BusinessGoogle ratingDistance
2Gun Roofing & Waterproofing5.0★ (2)33 mi
A-Z Foundation Contractors5.0★ (2)29 mi
ACE Restoration & Waterproofing, Inc.5.0★ (2)17 mi
Best Ever Waterproofing5.0★ (2)34 mi
Builders Trust Construction5.0★ (2)30 mi
CALIFORNIA ROOF COATINGS4.0★ (2)9 mi
Cis Roofing Waterproofing Solar5.0★ (2)20 mi
Dan’s Roofing Company Riverside5.0★ (2)28 mi
Dominguez Construction3.0★ (2)5 mi
EFP waterproofing5.0★ (2)29 mi
Firstchoice Foundation & Retrofitting Repair5.0★ (2)36 mi
Freedom Chemical Corporation5.0★ (2)32 mi
Innovative Painting & Waterproofing5.0★ (2)13 mi
LA Deck and Balcony5.0★ (2)29 mi
Professional Foundation Repair5.0★ (2)34 mi
Slater Waterproofing Inc3.0★ (2)9 mi
Washing Raccoons5.0★ (2)36 mi
Waterproofing and Roofing Solutions, Inc.5.0★ (2)33 mi
White Castle Construction5.0★ (2)29 mi
Zerik Scales5.0★ (2)29 mi

How much do foundation repair companies cost in Charter Oak?

National price ranges in USD, not adjusted for Charter Oak. Each row names its basis and the month we checked it.

How much do foundation repair companies cost in Charter Oak?
JobLowTypicalHighBasisChecked
Foundation repair$2,225$5,174$8,133Per project: typical range of customer-reported repairs. US national rangeOctober 2026

How we ranked Charter Oak foundation repair companies

We scored 240 Charter Oak 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Charter Oak data
Reputation35%Bayesian-adjusted Google star ratingMeasured
Credentials15%Active state license 0.6, bond 0.2, workers’ comp 0.2Not yet collected
Review volume10%log10(reviews + 1) against the list maximumMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability10%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%Google main category 1.0, business name 0.7, additional category 0.5Measured
Proximity5%1.0 when based in the city, falling to 0 at the trade’s radiusMeasured
Completeness5%Website, photos, description, hours, claimed profile (0.2 each)Measured

Foundation repair companies in Charter Oak: frequently asked questions

Who is the best foundation repair company in Charter Oak?

By CR Score, the highest-ranked foundation repair company in Charter Oak, CA is Green Ladder Roofing and Waterproofing with a CR Score of 88/100. It has 5.0★ from 258 Google reviews. It is open 24/7. Professional Foundation Repair (#2) and Pro-Seal Systems (#3) follow. We ranked 240 foundation repair companies on 8 factors, last updated October 22, 2026.

How many foundation repair companies are there in Charter Oak?

ContractorsRanked ranks 240 foundation repair companies serving Charter Oak, CA. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.

Which foundation repair companies in Charter Oak are open 24/7?

34 ranked foundation repair companies in Charter Oak post 24/7 hours. The highest-ranked are Green Ladder Roofing and Waterproofing (#1), Professional Foundation Repair (#2) and Cabral Roofing & Waterproofing (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which foundation repair companies in Charter Oak work on weekends?

155 of 240 ranked foundation repair companies post Saturday hours and 96 post Sunday hours. The highest-ranked open Saturdays are Green Ladder Roofing and Waterproofing (#1), Professional Foundation Repair (#2) and Pro-Seal Systems (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does foundation repair cost in Charter Oak?

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 Charter Oak. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Charter Oak foundation repair companies have?

The median Google rating among 240 rated foundation repair companies in Charter Oak is 5.0★, with a median of 15 reviews. Home Renew 360 Roofing I Construction I Energy has the most, 705 reviews, and ranks #11. 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 Charter Oak count in this ranking?

Yes, if they are within 40 mi of the Charter Oak 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 Charter Oak

  1. October 2026: CR Scores recalculated for 240 foundation repair companies serving Charter Oak.
  2. October 2026: 1 duplicate listing merged.

More foundation repair companies and Charter Oak pages

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