18 min read

Top 4 Plumbers in Los Angeles, CA

Quick Comparison

Firm Founded / Tenure & Credentials Services & Specialties Geographic Focus
Red Lilly Plumbing Continuous operation since 1924 (over 100 years), founded by John W. Lilly; four generations of ownership California CSLB License #218270 (C-36 Plumbing); BBB Accredited Business; weekly OSHA training program; "A Century of Service Excellence" anniversary recognition Beverly Boulevard HQ. 1647 Beverly Blvd, Los Angeles, CA 90026, plus Silverlake second location (2340 Hyperion Avenue, Silverlake, CA 90027); Burbank, Echo Park, Glendale, Hollywood, Los Feliz, Pasadena, Sherman Oaks, Silver Lake, Studio City, broader Los Angeles and San Fernando Valley
Moe Plumbing Services Continuous operation since 1927 (nearly a century), founded by Herb Moe; Davis family acquired and merged 1964; Michael C. Davis Owner and President California CSLB License #254678 (C-36 Plumbing); LA Times Readers' Choice "Best Plumber"; Angie's List Super Service Award; Best of Glendale Award; ~180 employees with many at 25-plus years tenure Glendale storefront (830 W. Doran Street, Glendale, CA 91203) plus corporate office (526 Commercial Street, Glendale, CA 91203); Burbank, Glendale, Pasadena, San Fernando Valley, broader Los Angeles County
Roy E. Smith Plumbing Co Inc Continuous family operation since 1948 (78 years), founded by Roy E. Smith; Ken Smith. second-generation owner. California CSLB License #179873 (C-36 Plumbing); Los Angeles city-access sewer license; fire sprinkler scope; BBB Listed Westside HQ (12320 Palms Boulevard, Los Angeles, CA 90066); Santa Monica, Pacific Palisades, Brentwood, Beverly Hills, Mar Vista, West Los Angeles, Marina Del Rey, Fox Hills, Culver City, Bel Air, Venice, Westchester, Playa Del Rey, Pacific Coast Highway, Ocean Park, Sawtelle, Century City, Cheviot Hills, Beverlywood, Palms
Twin Home Experts Continuous family operation since 1982 (44 years), founded by David Schuelke Sr.; second-generation ownership Jim Schuelke and Dave Schuelke. twin sons, took over 1992. California CSLB License #439600 (C-36 Plumbing); Utah DOPL #11944224-5501; Arizona ROC #326567, #330818, #331116; Pest Board #9510; BBB Listed Van Nuys HQ. 7243 Woodley Avenue, Van Nuys, CA 91406, plus Los Angeles mold office (1900 Sawtelle Boulevard, Los Angeles, CA 90025); San Fernando Valley, broader Los Angeles County, plus cross-state operations in Arizona, Utah, South Carolina, and Florida

1. Red Lilly Plumbing

  • Address: 1647 Beverly Boulevard, Los Angeles, CA 90026 (main office); 2340 Hyperion Avenue, Silverlake, CA 90027 (second location)
  • Phone: (323) 319-4102
  • Founder: John W. Lilly (established 1924)
  • Operating Since: 1924. over 100 years of continuous service in the Greater Los Angeles area
  • Family Generations: Four generations of ownership tied to the original founder’s family
  • License: California CSLB License #218270
  • Credentials: BBB Accredited Business; weekly OSHA safety training across the technician team; “A Century of Service Excellence” 100-year anniversary recognition; “Featured in Hollywood Dream Makers”
  • Service area: Burbank, Echo Park, Glendale, Hollywood, Los Feliz, Pasadena, Sherman Oaks, Silver Lake, Studio City, Greater Los Angeles area, San Fernando Valley
  • Website: redlillyplumbing.com

Inherited Trade Practice From the 1924 Founding Era

Red Lilly Plumbing has operated continuously since 1924. With John W. Lilly establishing the firm in the Greater Los Angeles area as a redhead plumber known among neighbors as “the plumber who would be there when you needed him.” The 100-plus-year operating history spans the full arc of Los Angeles building stock evolution, from the 1920s Spanish Colonial Revival residential boom through the postwar San Fernando Valley tract development, the mid-century modern Case Study era, the 1980s-1990s Westside renovation cycle and the contemporary luxury construction surge across Hollywood, Silverlake, and the surrounding eastside neighborhoods. The continuous-operation window also spans the full evolution of California plumbing code, from the early Uniform Plumbing Code adoption through the contemporary California Plumbing Code (Title 24, Part 5) revisions, with each code revision reshaping how licensed plumbing contractors route service work through the Los Angeles Department of Building and Safety (LADBS) permit system. Red Lilly carries a “A Century of Service Excellence” anniversary milestone alongside ongoing BBB Accredited Business status, producing a long-tenure plus third-party-verification credential profile that few Los Angeles plumbing practices match.

Four-Generation Ownership Continuity From John W. Lilly

The Red Lilly operational structure carries through four generations of ownership tied to the original founder’s family, with the firm’s published material describing John W. Lilly’s founding-era reputation as the operating-philosophy support that subsequent generations preserved alongside contemporary plumbing technology. The four-generation continuity matters operationally for Los Angeles work because century-old building stock requires long-tenured firm knowledge of how 1920s-1940s Hollywood-era plumbing was specified, what Spanish Colonial Revival residential rough-ins look like behind original lath-and-plaster walls, and how postwar bungalow plumbing differs from prewar courtyard apartment configurations. The institutional memory of how each Los Angeles neighborhood’s typical building stock routes plumbing service work transfers across owner generations rather than across hires. The Beverly Boulevard headquarters near Echo Park and Silver Lake places the firm geographically inside the eastside corridor where 1920s-1930s residential building stock concentrates most heavily.

CSLB License #218270 and Modern Trenchless Technology

Red Lilly holds California CSLB License #218270, which sits as the foundational regulatory credential for licensed plumbing contractor work across the state. Beyond the underlying license, the firm publishes weekly OSHA safety-training documentation across the technician team, producing an active-credential maintenance profile beyond baseline CSLB compliance. The published service capabilities span trenchless sewer technology, video-camera leak detection, hydro-jetting, copper repiping, earthquake shut-off valves (a California-specific specification driven by seismic-zone regulations), and complete bathroom and kitchen plumbing reconstructions. The trenchless sewer technology specification matters for Los Angeles work, where 1920s-1950s clay sewer laterals run under mature-tree root systems and where older municipal sewer infrastructure routes through bedrock-impacted easements that traditional trench excavation makes prohibitively expensive. The company’s published material also describes a 50-year warranty on select major plumbing projects, an exceptionally long warranty period in the Los Angeles plumbing market.

Beverly Boulevard Headquarters Plus Silverlake Second Location

Red Lilly operates from 1647 Beverly Boulevard in Los Angeles as the main office, with a second location at 2340 Hyperion Avenue in Silverlake. The dual-site footprint shapes daily-dispatch reach across the Los Angeles eastside corridor. The Beverly Boulevard headquarters covers Echo Park, Westlake, MacArthur Park, downtown-adjacent neighborhoods, and the Silver Lake-Echo Park corridor without the routing cost that Westside-headquartered firms absorb on every eastside dispatch. The Hyperion Avenue Silverlake location covers Los Feliz, Atwater Village, Glassell Park, and the broader Eastside hillside neighborhoods where 1910s-1930s craftsman bungalows and Spanish Colonial Revival residences define the typical building stock. Beyond the immediate eastside corridor, Red Lilly’s named service area extends north into Hollywood and across the Cahuenga Pass into the San Fernando Valley submarkets of Burbank, Glendale, Sherman Oaks, and Studio City, plus Pasadena east of the LA basin.

Whole-Home Plumbing Stack Plus HVAC and Heat Pump Services

The Red Lilly service stack spans plumbing, sewer, drain, water heater, leak detection, gas plumbing, hydro-jetting, trenchless sewer, repiping, rooter, sewer inspection, bathroom plumbing, earthquake shut-off valves, emergency services, plus HVAC services and heat pumps. The HVAC and heat-pump scope extension distinguishes Red Lilly from plumbing-only firms in Los Angeles, with the integrated mechanical-system capability fitting California’s contemporary push toward all-electric residential heating where heat pumps replace legacy gas furnaces and gas water heaters under the state’s Title 24 energy-code revisions and the South Coast Air Quality Management District (SCAQMD) Rule 1111 phase-out timelines. The whole-home capability means a single Los Angeles homeowner can route plumbing repipe plus sewer replacement plus water heater conversion plus heat pump installation through one operating team during a comprehensive home renovation, removing the typical specification friction between plumbing contractors and HVAC contractors handling separate scopes.

2. Moe Plumbing Services

  • Address: 830 W. Doran Street, Glendale, CA 91203 (storefront); 526 Commercial Street, Glendale, CA 91203 (corporate office)
  • Phone: (818) 396-8002
  • Owner / President: Michael C. Davis
  • Founder: Herb Moe (1927)
  • Ownership Transition: Davis family acquired the company in 1964 and merged with their existing Los Angeles-based plumbing operation; Charles Davis led the acquisition era; in 2000 the firm acquired John K. Keefe Plumbing (operating since 1940) and Burt Plumbing (established 1920), folding two additional century-adjacent operating histories into the Moe Plumbing portfolio
  • Operating Since: 1927. nearly a century of continuous service in the Greater Los Angeles area
  • License: California CSLB License #254678
  • Credentials: LA Times Readers’ Choice “Best Plumber”; Angie’s List Super Service Award (recognition awarded to less than 5% of listed businesses); Best of Glendale Award; technicians average 15-20 years company tenure with minimum five years training
  • Staff size: Approximately 180 employees, with many at 25-plus years company tenure
  • Service area: Glendale, Burbank, Pasadena, San Fernando Valley, broader Los Angeles area
  • Website: moeplumbing.com

Continuous Operation Since 1927 Across Multiple Acquisitions

Moe Plumbing Services has operated continuously since 1927, when Herb Moe founded the firm in the Glendale-Los Angeles area on principles of integrity, superior products, punctual scheduled service, and fair dignified treatment. The 99-year service-area footprint extends across the full Los Angeles building stock evolution from the late-1920s Spanish Colonial Revival era through the postwar suburban tract development, the 1960s-1970s ranch and split-level expansion, the 1990s-2000s Glendale and Pasadena renovation surge, and the contemporary two-and-three-unit and accessory-dwelling-unit conversion wave. The Davis family acquired Moe Plumbing in 1964 and merged it with their existing Los Angeles-based operation, with Charles Davis leading the merger-era integration. Michael C. Davis currently serves as Owner and President. In 2000, Moe Plumbing acquired John K. Keefe Plumbing (operating since 1940) and Burt Plumbing (established 1920), folding two additional decades-deep operating histories into the firm’s combined portfolio. The tri-acquisition model means the Moe operating team carries institutional knowledge from three predecessor firms whose combined founding dates trace back to 1920.

Davis Family Ownership Continuity From 1964 Forward

The Davis family has operated Moe Plumbing for 62 years, since the 1964 acquisition that brought the firm under their ownership and merged it with their pre-existing Los Angeles plumbing operation. Charles Davis led the 1964 integration era, drawn to Moe Plumbing’s mission alignment with his own operating philosophy. Michael C. Davis currently serves as Owner and President, supporting continuous family ownership across today’s operating period. Beyond the Davis family ownership tier, Moe Plumbing’s operating posture includes approximately 180 employees, with many staff members at 25-plus years company tenure. The deep-tenure workforce profile carries operational weight for Los Angeles work because plumbing technicians familiar with 1920s Spanish Colonial Revival rough-ins, postwar Glendale tract construction, and Pasadena Craftsman bungalow plumbing configurations apply that institutional memory across diverse project types without retraining at each project handoff. Technicians average 15-20 years with the company plus a minimum of five years of formal training before joining the Moe operating team.

Glendale Headquarters Plus Multi-Award Recognition

Moe Plumbing operates from a dual-site Glendale footprint, with the storefront at 830 W. Doran Street and the corporate office at 526 Commercial Street, both in Glendale ZIP 91203. The Glendale positioning shapes daily-dispatch reach across the northern Los Angeles County corridor (Glendale, Burbank, La Cañada Flintridge, La Crescenta, Tujunga) plus across the Cahuenga Pass into the San Fernando Valley submarkets. The firm holds California CSLB License #254678 as the foundational regulatory credential, supplemented by LA Times Readers’ Choice “Best Plumber” recognition and Angie’s List Super Service Award status (an honor awarded to less than 5% of listed businesses). The Best of Glendale Award rounds out the regional-recognition profile. The award-stack profile distinguishes Moe Plumbing from credential-only competitors in the Greater Los Angeles plumbing market, where the combination of long tenure, multi-acquisition operating history, large workforce, and recognition awards builds a credential profile that few Los Angeles plumbers equal across all four dimensions simultaneously.

3. Roy E. Smith Plumbing Co Inc

  • Address: 12320 Palms Boulevard, Los Angeles, CA 90066
  • Phone: (310) 398-8855
  • Fax: (310) 398-8801
  • Owner: Ken Smith (second-generation operator)
  • Founder: Roy E. Smith (established 1948)
  • Operating Since: 1948. nearly 80 years of continuous family ownership
  • License: California CSLB License #179873
  • Hours: Monday through Friday, 8:00 AM to 5:00 PM, with 24/7 emergency service available outside regular hours
  • Service area: Santa Monica, Pacific Palisades, Brentwood, Beverly Hills, Mar Vista, West Los Angeles, Marina Del Rey, Fox Hills, Culver City, Bel Air, Venice, Westchester, Playa Del Rey, Pacific Coast Highway, Ocean Park, Sawtelle, Century City, Cheviot Hills, Beverlywood, Palms
  • Website: royesmithplumbingco.com

Family-Owned Operation Since 1948 With Two-Generation Continuity

Roy E. Smith Plumbing Co Inc has operated continuously since 1948, with founder Roy E. Smith establishing the firm in West Los Angeles and Ken Smith carrying the operating role forward as the second-generation owner. The 78-year service-area footprint extends across the full postwar Westside building boom (the late-1940s veteran-housing wave, the 1950s-1960s Westside expansion through Mar Vista and Culver City, the 1970s-1980s Brentwood and Beverly Hills rebuilds, and the contemporary luxury renovation cycle through Pacific Palisades and Bel Air). Roy E. Smith’s published service tagline “Servicing The Entire Westside Since 1949” reflects the firm’s continuous Westside operating focus, with the 12320 Palms Boulevard headquarters in the Palms-Mar Vista neighborhood placing the firm geographically inside the Westside dispatch corridor. The two-generation continuity (founder Roy → second-gen Ken) carries operational weight for Westside work because postwar bungalow plumbing, mid-century modern flat-roof construction, and contemporary luxury renovation each require different specification approaches, and long-tenured firm knowledge of how each construction era routes plumbing service work transfers across owner generations.

CSLB License #179873 and Comprehensive Westside Coverage

Roy E. Smith holds California CSLB License #179873, the foundational regulatory credential for licensed plumbing contractor work across California. The firm’s published service area covers 20 named Westside neighborhoods, from the coastal corridor (Santa Monica, Venice, Marina Del Rey, Playa Del Rey, Pacific Palisades, Pacific Coast Highway) through the inland Westside (West Los Angeles, Brentwood, Bel Air, Beverly Hills, Beverlywood, Cheviot Hills, Century City, Mar Vista, Palms, Sawtelle) into the southern Westside (Culver City, Fox Hills, Westchester, Ocean Park). The 20-neighborhood named service area distinguishes Roy E. Smith from generalist Los Angeles plumbers who advertise broader-but-vaguer geographic coverage, with the Palms-Mar Vista headquarters positioning shaping efficient daily-dispatch reach across the entire Westside corridor.

Residential, Commercial, and Industrial Service Stack

The Roy E. Smith service scope spans three project categories: residential, commercial, and industrial. Residential work covers single-family bungalow, mid-century modern, ranch, and contemporary luxury home plumbing across the Westside. Commercial work covers retail, restaurant, office building, and two-and-three-unit building plumbing in the Westside corridor. Industrial work covers manufacturing and warehouse-adjacent project types. Beyond the three-category breadth, the published service stack includes drain unclogging, water heater installation and repair, sewer services with city-access licensing, gas line services, leak detection, septic tank services, water filter services, backflow services, fire sprinklers, and full bathroom and kitchen plumbing reconstructions. The fire-sprinkler scope extension means Roy E. Smith handles California-required residential and commercial fire-sprinkler systems beyond the typical plumbing-only service scope, while the city-access license for sewer replacements covers the Los Angeles Department of Building and Safety (LADBS) permit-and-inspection requirements that municipal sewer-tap work triggers.

4. Twin Home Experts

  • Address: 7243 Woodley Avenue, Van Nuys, CA 91406 (headquarters); 1900 Sawtelle Boulevard, Los Angeles, CA 90025 (Los Angeles mold office)
  • Phone: (866) 544-0120 (main); (818) 869-3445 (Los Angeles local)
  • Founder: David Schuelke Sr. (established 1982)
  • Current Ownership: Jim Schuelke and Dave Schuelke. twin sons of the founder, took over operations in 1992; second-generation family ownership
  • Operating Since: 1982. 44 years of family operation
  • License: California CSLB License #439600 plus Utah DOPL License #11944224-5501; Arizona ROC Licenses #326567 (KB 2), #330818 (CR 39), and #331116 (CR 37 Dual Plumbing); Pest Board License #9510 (sister rodent-control operation)
  • Service area: San Fernando Valley, Los Angeles, broader Los Angeles County; cross-state operations in Arizona (Maricopa County), Utah (Salt Lake City), South Carolina (North Charleston), Florida (Pompano Beach), and Washington (Spokane)
  • Project volume claim: Over 300,000 plumbing repair and installation jobs reported across the Los Angeles County operating history
  • Website: twinplumbing.com

Family Operation Since 1982 With Twin-Sons Generational Transition

Twin Home Experts has operated since 1982, when David Schuelke Sr. established the firm with the operating philosophy “provide a great customer experience every time.” The twin sons Jim Schuelke and Dave Schuelke (the namesake “Twin” pair) took over operations in 1992, ten years after the founding, grounding the second-generation transition while preserving the founder’s customer-experience operating principles. The 44-year service-area footprint extends across the full San Fernando Valley building stock evolution from the late-1980s post-condominium-conversion era through the 1990s-2000s Valley luxury rebuild cycle, the 2008-2012 mortgage-crisis maintenance era, and the contemporary mixed-use and accessory-dwelling-unit conversion wave that defines current Valley residential work. The Van Nuys headquarters at 7243 Woodley Avenue places Twin Home Experts geographically inside the central San Fernando Valley dispatch corridor, with the secondary Los Angeles mold office at 1900 Sawtelle Boulevard extending the operating footprint into West Los Angeles.

Cross-State Licensing and Cross-Service Operating Stack

Twin Home Experts holds California CSLB License #439600 as the foundational state credential, supplemented by an notably broad cross-state license stack: Utah DOPL License #11944224-5501; three Arizona Registrar of Contractors licenses (#326567 KB 2, #330818 CR 39, #331116 CR 37 Dual Plumbing); and a separate Pest Board License #9510 covering the sister rodent-control operation Twins Rodent Stoppers. The five-state license distribution distinguishes Twin Home Experts from single-state Los Angeles plumbers, with the cross-state operating capacity reflecting the firm’s expansion from the original San Fernando Valley footprint into Arizona (Maricopa County including Scottsdale and Mesa), Utah (Salt Lake City), South Carolina (North Charleston), Florida (Pompano Beach), and Washington (Spokane). The cross-service stack adds mold remediation, leak detection (slab leak, gas leak, roof leak, high-water-bill diagnosis), water damage restoration, rodent control, and HVAC services to the underlying plumbing scope, producing an integrated home-services profile rather than a plumbing-only day-to-day setup.

Project Volume and Slab-Leak Specialty for Los Angeles Conditions

The Twin Home Experts published material reports completing over 300,000 plumbing repair and installation jobs across the Los Angeles County operating history, with the volume claim grounding the firm’s procedural-experience profile. The slab-leak detection scope carries particular weight for Los Angeles work because much of the postwar Los Angeles building stock (1950s-1970s tract homes across the San Fernando Valley, the South Bay, and the eastern Los Angeles basin) sits on concrete slab foundations where copper or galvanized supply lines run under the slab, producing the slab-leak failure mode that plumbing-on-grade construction creates. Slab-leak detection requires non-destructive diagnostic methods (electronic leak detection, infrared imaging, pressure testing, video camera inspection) before slab penetration, and the diagnostic specialty distinguishes Los Angeles slab-foundation plumbing service from the basement-and-crawl-space plumbing service that dominates older eastern-United-States markets. Twin Home Experts publishes diagnostic capability across electronic leak detection, video camera inspection, and water-damage restoration coordination for the post-leak repair phase.

Reference Notes

Los Angeles presents a structurally complex market for licensed plumbing contractor practice. The Los Angeles Department of Building and Safety (LADBS) administers building permits across the City of Los Angeles, with the California Contractors State License Board (CSLB) administering licensed plumbing contractor licensing across the state through the C-36 Plumbing Contractor classification. The California Plumbing Code (Title 24, Part 5) frames permit-pulling, inspection, and code-compliance work, with seismic-zone provisions (mandatory automatic gas shut-off valves, grounded water heater installation, flexible supply-line specifications), drought-era water-conservation requirements (low-flow fixture mandates, recirculating-pump efficiency standards), and the contemporary Title 24 energy-code revisions (heat-pump water heater incentives, all-electric residential conversion timelines) all reshaping how licensed plumbers route service work. The Los Angeles building stock covers about a century of construction eras, from 1910s-1930s Craftsman bungalows and Spanish Colonial Revival residences through the postwar tract-home boom (1950s-1970s slab-foundation construction across the San Fernando Valley, the South Bay, and the eastern basin), the mid-century-modern Case Study era, and the contemporary luxury construction wave across the Westside, the Hills, and the Eastside corridor. Verification routes for licensed plumbing contractor credentials run through the CSLB online license database at cslb.ca.gov, the BBB business-profile listings, the Plumbing-Heating-Cooling Contractors Association (PHCC) of California directory, the Los Angeles Department of Building and Safety contractor and permit databases, and each firm’s own published website and service-area copy.

Tenure profiles vary across the four firms profiled. Red Lilly Plumbing roots the longest continuous operating tenure (1924 founding by John W. Lilly, four-generation ownership continuity, dual-location footprint with Beverly Boulevard headquarters and Silverlake second location, BBB Accredited Business status, weekly OSHA technician training program, California CSLB License #218270, “A Century of Service Excellence” anniversary recognition). Moe Plumbing Services runs a 99-year continuous operation (1927 founding by Herb Moe, Davis family acquisition in 1964 with Charles Davis leading the merger and Michael C. Davis currently serving as Owner and President, 2000 acquisition of John K. Keefe Plumbing operating since 1940 plus Burt Plumbing established 1920, approximately 180 employees with many at 25-plus years company tenure, California CSLB License #254678, LA Times Readers’ Choice “Best Plumber” recognition, Angie’s List Super Service Award, Best of Glendale Award). Roy E. Smith Plumbing carries a 78-year continuous family operation (1948 founding by Roy E. Smith, Ken Smith second-generation owner, Westside headquarters at 12320 Palms Boulevard, California CSLB License #179873, comprehensive 20-neighborhood Westside named service area, residential-plus-commercial-plus-industrial service stack, fire-sprinkler scope extension). Twin Home Experts runs a 44-year continuous family operation (1982 founding by David Schuelke Sr., second-generation transition in 1992 to twin sons Jim and Dave Schuelke, California CSLB License #439600 plus cross-state licensing across Utah, Arizona, South Carolina, Florida, and Washington, Van Nuys San Fernando Valley headquarters with Los Angeles mold office at Sawtelle Boulevard, integrated cross-service operating stack covering plumbing, mold remediation, leak detection, water damage restoration, and rodent control). The four firms share three patterns: each shows long-running ownership continuity tied to named principals or family operators, each holds an active California CSLB plumbing contractor license verifiable through cslb.ca.gov, and each services multiple Los Angeles submarkets from a Los Angeles County-secured headquarters footprint. Red Lilly spans the longest combined profile through the four-generation tenure, the dual-site Beverly Boulevard plus Silverlake dispatch footprint, the 100-plus-year operating tenure matched against the California Plumbing Code seismic and drought-era provisions, and the whole-home plumbing-plus-HVAC-plus-heat-pump coordinated service stack.

Selection Methodology

Selection follows four criteria. First, continuous family ownership or founder-operator continuity outside the national rollup pattern. Second, verifiable CSLB C-36 Plumbing Contractor license cross-checked via the California Contractors State License Board (CSLB) public lookup. Third, BBB Accreditation or equivalent third-party rating. Fourth, minimum 10-year continuous operating tenure with documented Los Angeles, CA service coverage. Firms acquired by national franchise networks (Authority Brands’ Benjamin Franklin Plumbing, Neighborly’s Mr. Rooter, Service Experts, Roto-Rooter, Wrench Group, Redwood Services, Master Trades Group, ARS) are excluded.

Frequently Asked Questions

How do I verify a Los Angeles, CA plumber’s license?

Use the California Contractors State License Board (CSLB) public licensee database at cslb.ca.gov. Search by license number or business name. Confirm active status, classification, bonding, and insurance before authorizing work.

What credentials should a Los Angeles, CA plumber hold?

At minimum: CSLB C-36 Plumbing Contractor credential plus general liability insurance and workers’ compensation coverage. Specialty work (gas line, backflow prevention, fire sprinkler, sewer lateral) requires additional credential layers.

How can I tell if a Los Angeles, CA plumber is locally owned versus a national rollup?

Check ownership disclosures and acquisition history. National franchise brands typically operate under parent-company branding. Search the firm name plus “acquired” or “parent company” to surface ownership structure. The four firms in this directory all run as independent locally-owned operators.

When should I call an emergency plumber in Los Angeles?

Burst pipes, sewer backups, gas leaks, no-water events, slab leak events, and water heater failures justify after-hours dispatch. Seismic-zone gas shut-off requirements drive earthquake-event service surges across LA County. Each firm in this directory offers either 24/7 emergency service or structured after-hours response.

Editorial Note

Compiled by the editorial team. Firm details cross-verified through state license databases, BBB business profiles, and firm-published websites where available. License numbers should be re-verified through the California Contractors State License Board (CSLB) public lookup before authorizing work. Information current as of the date below; firm details may change without notice. Last updated: 2026-05-10.