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Best roofers in Diamond Bar, CA

The highest-scoring roofer in and near Diamond Bar is PWC Roofing (score 78, 5.0 stars from 198 Google reviews). 33 companies meet the 5 Star standard within 25 km; the top 30 are ranked below.

Last updated Sep 25, 2026How we rank
  1. 1

    PWC Roofing

    5.0 · 198 Google reviewsFullerton, CA
    78SCORE
    (949) 546-9602 WebsiteFull profile
  2. 2

    Fullerton EcoStar Roofing Group

    5.0 · 99 Google reviewsFullerton, CA
    75SCORE
    (657) 571-7105 WebsiteFull profile
  3. 3

    Terrazas Roofing

    5.0 · 94 Google reviewsOrange, CA
    74SCORE
    (714) 951-0292 WebsiteFull profile
  4. 4

    Sandoval Roofing

    5.0 · 88 Google reviewsOntario, CA
    74SCORE
    (909) 665-6386 WebsiteFull profile
  5. 5

    Brave Bird Roofing

    5.0 · 73 Google reviewsFullerton, CA
    73SCORE
    (714) 410-6521 WebsiteFull profile
  6. 6

    Superior Roofing Systems

    5.0 · 107 Google reviewsAnaheim, CA
    71SCORE
    (714) 557-5077 WebsiteFull profile
  7. 7

    Luans roofing Inc

    5.0 · 57 Google reviewsChino Hills, CA
    71SCORE
    (909) 639-6348Full profile
  8. 8

    King Roofing Company

    4.9 · 120 Google reviewsOrange, CA
    70SCORE
    (714) 345-8704 WebsiteFull profile
  9. 9

    Uplift Roofing Eastvale

    4.9 · 49 Google reviewsEastvale, CA
    68SCORE
    (951) 899-0990Full profile
  10. 10

    Tetras Roofing Yorba

    4.9 · 48 Google reviewsYorba Linda, CA
    68SCORE
    (657) 385-8858Full profile
  11. 11

    MAF Roofing CA

    4.9 · 46 Google reviewsAnaheim, CA
    67SCORE
    (562) 222-7589Full profile
  12. 12

    Backstage Roof's Fullerton

    4.9 · 44 Google reviewsFullerton, CA
    67SCORE
    (657) 467-4699Full profile
  13. 13

    The Affordable Roofers

    4.9 · 37 Google reviewsBrea, CA
    67SCORE
    (714) 364-4998 WebsiteFull profile
  14. 14

    C & T Roofing

    4.9 · 36 Google reviewsFullerton, CA
    67SCORE
    (657) 467-8928Full profile
  15. 15

    Guardian Roofs

    4.7 · 348 Google reviewsOrange, CA
    66SCORE
    (562) 632-5965 WebsiteFull profile
  16. 16

    Kaliber Roofing Inc

    4.8 · 111 Google reviewsMontclair, CA
    66SCORE
    (909) 631-0310 WebsiteFull profile
  17. 17

    FJ Zam Roofing

    4.9 · 38 Google reviewsChino, CA
    66SCORE
    (909) 473-4546Full profile
  18. 18

    Geronimo Roofing & Leaks

    4.9 · 31 Google reviewsPomona, CA
    66SCORE
    (909) 757-0900 WebsiteFull profile
  19. 19

    Stellar Home Roof's Anaheim

    5.0 · 30 Google reviewsAnaheim, CA
    66SCORE
    (949) 991-6070Full profile
  20. 20

    Corona Roofing & Siding

    4.8 · 53 Google reviewsCorona, CA
    65SCORE
    (951) 540-0980 WebsiteFull profile
  21. 21

    Sho Global Roofing

    5.0 · 44 Google reviewsFullerton, CA
    65SCORE
    (657) 474-5049 WebsiteFull profile
  22. 22

    Green Roofing Inc.

    4.9 · 29 Google reviewsOrange, CA
    64SCORE
    (657) 566-5554Full profile
  23. 23

    Skyvision Roofing

    4.8 · 24 Google reviewsPomona, CA
    64SCORE
    (840) 232-4833 WebsiteFull profile
  24. 24

    RESCOM ROOFING PROS

    5.0 · 22 Google reviewsNorco, CA
    64SCORE
    (951) 987-7949 WebsiteFull profile
  25. 25

    Specialist Roofing & Repair

    4.9 · 253 Google reviewsOrange, CA
    63SCORE
    (714) 452-1989 WebsiteFull profile
  26. 26

    Medina Pro Roofing

    4.9 · 32 Google reviewsOrange, CA
    63SCORE
    (714) 767-6977 WebsiteFull profile
  27. 27

    Integrity Roofing Inc.

    4.9 · 25 Google reviewsRancho Cucamonga, CA
    63SCORE
    (909) 588-0123Full profile
  28. 28

    Solstice Roofing Inc

    4.9 · 20 Google reviewsAnaheim, CA
    63SCORE
    (714) 699-9949Full profile
  29. 29

    All In One Roofing And Solar

    4.9 · 52 Google reviewsBrea, CA
    62SCORE
    (855) 717-1176 WebsiteFull profile
  30. 30

    Precision General roofing Inc.

    4.9 · 31 Google reviewsAnaheim, CA
    62SCORE
    (714) 650-8444Full profile

We list only companies that clear our published bar, so this area is still filling in. As more roofers near Diamond Bar qualify, they'll appear here automatically.

Compare the top 10

Top roofers in Diamond Bar by 5 Star Score
#CompanyScoreGoogle ratingReviewsYearsBased in
1PWC Roofing785.0198–Fullerton
2Fullerton EcoStar Roofing Group755.099–Fullerton
3Terrazas Roofing745.094–Orange
4Sandoval Roofing745.088–Ontario
5Brave Bird Roofing735.073–Fullerton
6Superior Roofing Systems715.0107–Anaheim
7Luans roofing Inc715.057–Chino Hills
8King Roofing Company704.9120–Orange
9Uplift Roofing Eastvale684.949–Eastvale
10Tetras Roofing Yorba684.948–Yorba Linda

Roofers in Diamond Bar: quick answers

Who is the highest-rated roofer in Diamond Bar, CA?

PWC Roofing has the highest 5 Star Score among roofers in and near Diamond Bar: 78 out of 100, with a 5.0 star Google rating from 198 reviews.

How many 5 Star roofers serve Diamond Bar?

33 roofers meet our standard within 25 km of Diamond Bar: at least a 4.5 star rating, 20 or more reviews and a score of 60 or higher. The top 30 have 2,239 Google reviews between them, averaging 4.92 stars.

How are these roofers ranked?

By 5 Star Score: rating quality adjusted for review count (45 points), review volume (25), review recency (15), years in business (10) and license verification (5). Businesses cannot pay to change their score.

Roofers near Diamond Bar

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Ratings and review counts come from each company's public Google listing and are re-checked monthly. 5 Star Home Service Pros is independent; companies cannot pay for placement.