you asked:
Plumbers in Diamond Bar, CA
30 plumbers in Diamond Bar, CA. Every listing checked against the issuer's record, in the published order.
Klaus & Sons Plumbing Heating & Air Conditioning
Montclair, CA · WC ✓ · 8 mi away
Proof for Klaus & Sons Plumbing Heating & Air Conditioning
- License
- CSLB 320990
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C10 Electrical; C16 Fire Protection; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
- Expires
- Jul 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Montclair, CA · serves California
- Phone
- (909) 982-5698
- Listing
- Built from public records. Not claimed yet, so call them directly.
Klein Plumbing and Drain Cleaning Service
Covina, CA · WC exempt · 6 mi away
Proof for Klein Plumbing and Drain Cleaning Service
- License
- CSLB 850452
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Dec 31, 2026
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Covina, CA · serves California
- Phone
- (626) 967-3993
- Listing
- Built from public records. Not claimed yet, so call them directly.
Kline's Plumbing Inc
Covina, CA · WC ✓ · 8 mi away
Proof for Kline's Plumbing Inc
- License
- CSLB 912603
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Aug 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Covina, CA · serves California
- Phone
- (626) 487-1374
- Listing
- Built from public records. Not claimed yet, so call them directly.
Kramers Plumbing
Placentia, CA · WC ✓ · 9 mi away
Proof for Kramers Plumbing
- License
- CSLB 1065597
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- May 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Placentia, CA · serves California
- Phone
- (714) 260-3986
- Listing
- Built from public records. Not claimed yet, so call them directly.
L C Construction & Plumbing Corp
City of Industry, CA · WC ✓ · 5 mi away
Proof for L C Construction & Plumbing Corp
- License
- CSLB 538151
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- B General Building; C16 Fire Protection; C36 Plumbing
- Expires
- Aug 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- City of Industry, CA · serves California
- Phone
- (626) 444-4836
- Listing
- Built from public records. Not claimed yet, so call them directly.
Las Colinas
Placentia, CA · WC ✓ · 9 mi away
Proof for Las Colinas
- License
- CSLB 841904
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Placentia, CA · serves California
- Phone
- (714) 528-8100
- Listing
- Built from public records. Not claimed yet, so call them directly.
Latco - Latta Larry R
Chino, CA · WC exempt · 8 mi away
Proof for Latco - Latta Larry R
- License
- CSLB 634104
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- B General Building; C34 Pipeline; C36 Plumbing; C42 Sanitation System
- Expires
- Dec 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Chino, CA · serves California
- Phone
- (530) 575-5997
- Listing
- Built from public records. Not claimed yet, so call them directly.
Le Joseph Hoang
Chino Hills, CA · WC ✓ · 7 mi away
Proof for Le Joseph Hoang
- License
- CSLB 844902
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- B General Building; C10 Electrical; C20 Warm-Air Heating, Ventilating and Air-Conditioning; C36 Plumbing
- Expires
- Aug 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Chino Hills, CA · serves California
- Phone
- (909) 539-5407
- Listing
- Built from public records. Not claimed yet, so call them directly.
Leak Masters Plumbing - Rooter
Yorba Linda, CA · WC exempt · 7 mi away
Proof for Leak Masters Plumbing - Rooter
- License
- CSLB 1032405
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Nov 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Yorba Linda, CA · serves California
- Phone
- (714) 325-3252
- Listing
- Built from public records. Not claimed yet, so call them directly.
Leak Specialists
Chino Hills, CA · WC exempt · 7 mi away
Proof for Leak Specialists
- License
- CSLB 734392
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing; D35 Pool and Spa Maintenance
- Expires
- Apr 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Chino Hills, CA · serves California
- Phone
- (909) 590-8874
- Listing
- Built from public records. Not claimed yet, so call them directly.
Legrant Builders Inc
Yorba Linda, CA · WC exempt · 9 mi away
Proof for Legrant Builders Inc
- License
- CSLB 1118285
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- A General Engineering; B General Building; C10 Electrical; C36 Plumbing
- Expires
- Mar 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Yorba Linda, CA · serves California
- Phone
- (909) 921-9980
- Listing
- Built from public records. Not claimed yet, so call them directly.
Lin Sun
West Covina, CA · WC exempt · 6 mi away
Proof for Lin Sun
- License
- CSLB 931259
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Apr 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- West Covina, CA · serves California
- Phone
- (626) 213-9739
- Listing
- Built from public records. Not claimed yet, so call them directly.
Los Primos Plumbing Inc
LA Habra, CA · WC ✓ · 9 mi away
Proof for Los Primos Plumbing Inc
- License
- CSLB 1122949
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- LA Habra, CA · serves California
- Phone
- (562) 550-9099
- Listing
- Built from public records. Not claimed yet, so call them directly.
Lots Plumbing Inc
Fullerton, CA · WC ✓ · 9 mi away
Proof for Lots Plumbing Inc
- License
- CSLB 945178
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Nov 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Fullerton, CA · serves California
- Phone
- (888) 888-1403
- Listing
- Built from public records. Not claimed yet, so call them directly.
Lou's Plumbing Inc
San Dimas, CA · WC ✓ · 7 mi away
Proof for Lou's Plumbing Inc
- License
- CSLB 854291
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Feb 28, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- San Dimas, CA · serves California
- Phone
- (909) 241-9919
- Listing
- Built from public records. Not claimed yet, so call them directly.
Lt Plumbing
Chino, CA · WC exempt · 8 mi away
Proof for Lt Plumbing
- License
- CSLB 1073062
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Jun 30, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Exempt: no employees
- Where
- Chino, CA · serves California
- Phone
- (909) 703-7196
- Listing
- Built from public records. Not claimed yet, so call them directly.
Luna Julio
Yorba Linda, CA · WC ✓ · 7 mi away
Proof for Luna Julio
- License
- CSLB 1127667
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- B2 Residential Remodeling; C15 Flooring and Floor Covering; C36 Plumbing
- Expires
- Oct 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Yorba Linda, CA · serves California
- Phone
- (714) 786-0136
- Listing
- Built from public records. Not claimed yet, so call them directly.
M C G Boilers Inc
Chino Hills, CA · WC ✓ · 7 mi away
Proof for M C G Boilers Inc
- License
- CSLB 811476
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C4 Boiler, Hot Water Heating and Steam Fitting; C36 Plumbing
- Expires
- Aug 31, 2028
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Chino Hills, CA · serves California
- Phone
- (909) 393-6576
- Listing
- Built from public records. Not claimed yet, so call them directly.
M Dads Plumbing Inc
San Dimas, CA · WC ✓ · 7 mi away
Proof for M Dads Plumbing Inc
- License
- CSLB 1141773
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- C36 Plumbing
- Expires
- Aug 31, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- San Dimas, CA · serves California
- Phone
- (909) 901-9909
- Listing
- Built from public records. Not claimed yet, so call them directly.
M H Construction
Yorba Linda, CA · WC ✓ · 7 mi away
Proof for M H Construction
- License
- CSLB 439263
- Issuer
- California Contractors State License Board
- Status
- Active
- Class
- B General Building; C36 Plumbing
- Expires
- Apr 30, 2027
- Checked
- Oct 24, 2026
- Workers' comp
- Workers' comp on file
- Where
- Yorba Linda, CA · serves California
- Phone
- (714) 637-3170
- Listing
- Built from public records. Not claimed yet, so call them directly.
More cities in California
Free for people · nobody pays to rank. Run one of these businesses? Claim it free.