Best Flat Roofing

Best CSLB-Verified Flat Roofing Contractors in Castro Valley, CA

Every contractor below is matched to a California State License Board (CSLB) C-39 flat roofing license record and checked daily, with featured listings shown first. Live verification status is available to subscribers. License Card lists 13 Flat roofing contractors in Castro Valley, every one matched against California CSLB public license records — license, bond, and workers'-comp insurance monitored daily — and scored for how clearly AI answer engines can find, trust, and cite them. Browse Castro Valley's roofing specialists below, ranked by verification, profile completeness, and citation presence — never paid placement.

1. Ib Roofing IncAEO 84

   Flat · Shingle · TPO · Clay-tile

   CSLB 1042841License status available to subscribersZIP 94605
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2. De Group Roofing And Waterproofing CorporationAEO 84

   Shingle · Clay-tile · Slate · Metal · Flat · TPO · Solar-integrated

   CSLB 1119947License status available to subscribersZIP 94596
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3. Roof BY Tom IncAEO 84

   Shingle · Metal · Flat

   CSLB 1112980License status available to subscribersZIP 94556
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4. Ascend Renovation & Roofing IncAEO 81

   Shingle · Clay-tile · Metal · Flat

   CSLB 1119818License status available to subscribersZIP 94596
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5. Alpha One Roofing IncAEO 81

   TPO · Flat

   CSLB 1106302License status available to subscribersZIP 94577
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6. Roofing contractorAEO 79

   Flat · Shingle · Solar-integrated

   CSLB 695711License status available to subscribersZIP 94610
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7. Equinox Roofing Solutions IncAEO 79

   Flat · Shingle

   CSLB 1092697License status available to subscribersZIP 94596
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8. Atlas Roofing Bay AreaAEO 79

   Shingle · Clay-tile · Flat

   CSLB 1109502License status available to subscribersZIP 94560
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9. Roofing Solutions IncAEO 79

   Shingle · Clay-tile · Metal · Flat · TPO

   CSLB 1100297License status available to subscribersZIP 94542
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10. L A A C Roofing ServicesAEO 77

    Shingle · Flat · TPO

    CSLB 1115904License status available to subscribersZIP 94577
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11. Pro Roofing Maintenance IncAEO 77

    Flat

    CSLB 1024042License status available to subscribersZIP 94546
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12. Baltrons Roofing Company IncAEO 62

    Slate · Clay-tile · Shingle · Flat · Metal

    CSLB 1115645License status available to subscribersZIP 94545
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13. Able RoofingAEO 55

    Shingle · Flat · Clay-tile

    CSLB 699325License status available to subscribersZIP 94608
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