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Licensed plumbers in Mill Valley

9 contractors with a Mill Valley mailing address hold an active (CLEAR) CSLB C-36 Plumbing license in CSLB's license file dated Oct 20, 2026. Get quotes from up to 3 of them →

Plumbing work calls for a C-36 Plumbing license. A B general builder can do plumbing only as part of a larger job with other unrelated trades, unless they also hold a C-36.
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A Featured spot on this plumbing page for Mill Valley is a paid ad for a License Verified contractor, labeled "Ad" every time. It sits apart from the directory and never changes the order below. From $49/mo. Join the waitlist →

All 9 licensed plumbers

Order: A–Z by business name (neutral, stated). Showing 1–9.
ALTIUS HOME SERVICES
C-36 · also B, C-9, C-10, C-35 · Lic. #914976 · Mill Valley 94942
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
BAYSIDE REMODELING AND CONSTRUCTION
C-36 · also B, C-27 · Lic. #680332 · Mill Valley 94941
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
D BENJAMIN CAHN DBA ZION ENGINEERING
C-36 · also A, C-16 · Lic. #440082 · Mill Valley 94941
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
DELTA T PLUMBING
C-36 · Lic. #1122448 · Mill Valley 94941
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
DILL PLUMBING COMPANY
C-36 · Lic. #980312 · Mill Valley 94941
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
INNOVATIVE PIPING SYSTEMS
C-36 · Lic. #728645 · Mill Valley 94941
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PEDRO FEMENIA & SONS INC
C-36 · also C-4, C-16, C-20 · Lic. #392227 · Mill Valley 94942
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PETERSEN PLUMBING SERVICES INC
C-36 · Lic. #932251 · Mill Valley 94942
Workers' comp: exempt
Active — CSLB flag: case or citation pending
ZAK PLUMBING CO
C-36 · Lic. #654608 · Mill Valley 94941
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026