Top 4 Plumbers in San Francisco, CA

Quick Comparison

Firm	Founded / Tenure & Credentials	Services & Specialties	Geographic Focus
Malcolm Plumbing & Mechanical	Family-owned business with over a century of combined plumbing-industry leadership tenure; current operating leadership Matthew Cahill (President) and Kevin Kavanaugh II (Vice President)	CA CSLB Plumbing Contractor classification, BBB Accredited, licensed and insured	184 Mendell Street Bayview San Francisco base (94124); San Francisco, Marin, San Mateo, Santa Clara Counties; Millbrae, Daly City, San Jose, Burlingame, Foster City, South San Francisco, San Bruno, Hillsborough, Los Altos, Atherton, Palo Alto, Redwood City, San Carlos, Brisbane, Pacifica, Half Moon Bay
Magic Plumbing & Heating	Continuous family operation since 1980 (45 years), traces roots to the late 1970s as Magic Rooter (a specialized drain cleaning service in San Francisco) before expanding service offerings and rebranding to Magic Plumbing; California CSLB License #698806; BuildZoom Top 3% of California contractors (BuildZoom score 112); licensed, bonded, and insured; family-owned and locally operated	Plumbing, heating, cooling, drain services, sewer service, water heater work; full-range plumbing solutions plus heating and cooling services	Bayview HQ (1455 Bancroft Avenue, San Francisco, CA 94124); San Francisco plus broader Bay Area including Oakland, Berkeley, San Mateo, Daly City, Alameda, Burlingame, Millbrae, San Bruno, South San Francisco, Pacifica, Belmont, Redwood City, San Carlos, Emeryville, Albany, Hillsborough, Brisbane, Colma
O'Grady Plumbing	Continuous operation since 1998 (27 years); described as "San Francisco's multigenerational residential and commercial plumbing company"; 24/7 emergency service with 30-minute response time; high ratio of Master Plumbers; same-day service availability	Residential and commercial plumbing, drain cleaning, water heater work, sewer line service, leak detection, fixture installation, emergency plumbing	Bayview HQ (1610 Evans Avenue, San Francisco, CA 94124); San Francisco neighborhoods including Richmond, Sunset, Southwest, Twin Peaks, Mt. Davidson, Central, North, Northeast, Central-Eastern, Southeastern districts plus San Mateo
Sugar Bear Home Services	Continuous family operation since 2001 (24 years); founded by Lawrence Smith; California CSLB License #946657 covering three trade classifications (C-36 Plumbing, C-20 Warm-Air Heating Ventilating and Air-Conditioning, C-10 Electrical); operating philosophy "decisions are made by people who live in the community we serve, not a corporate office in another state"; bonded and insured	Plumbing, heating, cooling (HVAC), electrical; integrated single-call home service profile across three trade categories	South San Francisco HQ (317 Corey Way, South San Francisco, CA 94080); Bay Area including South San Francisco, Pacifica, Foster City, Burlingame, Tiburon, San Francisco

1. Malcolm Plumbing & Mechanical

Address: 184 Mendell Street, San Francisco, CA 94124
Phone: (415) 621-1985
Hours: Monday through Friday, 7:30 AM to 4:00 PM (closed Saturday and Sunday)
Operating Tenure: Over 100 years in the plumbing industry (one of the longest-tenured plumbing operations in San Francisco)
President: Matthew Cahill
Vice President: Kevin Kavanaugh II
Operating Status: Family-owned business
Credentials: BBB Accredited; licensed and insured
Service area: San Francisco, Marin, San Mateo, Santa Clara Counties; 16 named cities including Millbrae, Daly City, San Jose, Burlingame, Foster City, South San Francisco, San Bruno, Hillsborough, Los Altos, Atherton, Palo Alto, Redwood City, San Carlos, Brisbane, Pacifica, Half Moon Bay
Website: malcolmplumbingandmech.com

Century-Plus Operating Tenure With Bayview Headquarters

Malcolm Plumbing & Mechanical operates with over 100 years in the plumbing industry, framing one of the longest-tenured plumbing-trade profiles in San Francisco. The century-plus operating zone reaches the full San Francisco building stock evolution from the post-1906-earthquake-and-fire reconstruction era through the 1920s-1930s downtown commercial-and-residential development, the postwar suburban tract expansion across the Sunset and Richmond Districts (1940s-1960s), the 1970s-1980s urban-renewal cycle, the 1990s-2000s tech-boom-driven luxury renovation surge, and the contemporary tech-headquartered Bay Area service market. The Bayview headquarters at 184 Mendell Street places the firm geographically inside the southeast San Francisco industrial-and-commercial corridor (the broader Bayview-Hunters Point district), with the headquarters position supporting daily-dispatch reach across the broader San Francisco peninsula and into the Marin, San Mateo, and Santa Clara County submarkets.

Cahill-Kavanaugh Operating Leadership Plus Four-County Reach

Malcolm Plumbing operates under Matthew Cahill as President and Kevin Kavanaugh II as Vice President, with the dual-leadership day-to-day setup grounding the present-era management profile. The “II” suffix on Kevin Kavanaugh’s name suggests potential generational continuity (Kavanaugh I as the founding-or-prior-generation operator), though specific generational succession details are not published on the firm’s contemporary site. The four-county service area covers San Francisco, Marin, San Mateo, and Santa Clara Counties, with the published 16-named-city footprint extending across the central Bay Area peninsula (Daly City, Brisbane, South San Francisco, San Bruno, Millbrae, Burlingame, Hillsborough, San Mateo, Foster City, Redwood City, San Carlos, Atherton, Palo Alto, Los Altos) plus the coastal corridor (Pacifica, Half Moon Bay) plus San Jose in Santa Clara County. The four-county reach distinguishes Malcolm from neighborhood-grounded San Francisco plumbers, with the breadth supporting both inner-San-Francisco renovation work and the broader Bay Area peninsula service market through one operating dispatch model.

Mendell Street Bayview Position Plus Industrial-Corridor Operating Anchor

Malcolm Plumbing’s 184 Mendell Street headquarters places the firm geographically inside the Bayview-Hunters Point industrial corridor of San Francisco, with the address sitting along the firm’s operational support within the southeast San Francisco commercial-and-industrial submarket. The Bayview position supports both inner-San-Francisco residential service work (the dense Mission District, Castro, Noe Valley, Bernal Heights, Glen Park, and broader southeast San Francisco residential corridor) and the commercial-industrial service work that the Bayview-Hunters Point industrial base produces. The Monday-through-Friday 7:30 AM to 4:00 PM operating hours support standard scheduled-service work across the broader four-county footprint, with the BBB accreditation plus the licensed-and-insured status grounding the firm’s third-party verification profile.

Century-Plus Industry Tenure Across San Francisco Building Eras

The century-plus operating tenure means Malcolm Plumbing has serviced the building stock that defines each construction era of post-1906-earthquake San Francisco. The 1906 earthquake and fire produced extensive rebuild construction across the downtown core and the inner-loop neighborhoods, with the 1907-1920 rebuild era supporting today’s San Francisco residential-and-commercial building stock baseline. The 1920s-1930s prewar luxury residential development across Pacific Heights, Presidio Heights, and Sea Cliff plus the 1940s-1960s postwar tract expansion across the Sunset and Richmond Districts plus the 1970s-1980s urban-renewal cycle plus the contemporary tech-boom luxury renovation cycle each produce distinctive plumbing-specification requirements that institutional-knowledge accumulation across decades of operating experience supports. The four-county service grid plus the 100+ year operating record combined produce an institutional-knowledge profile that few San Francisco plumbing operations match across both depth and breadth dimensions.

Family-Owned Operating Profile Plus Industry-Tenure Depth

Malcolm Plumbing’s family-owned business positioning grounds the firm’s operating identity within the San Francisco plumbing market, with the family-operated structure distinguishing Malcolm from corporate-rollup competitors that have absorbed many traditional family-owned plumbing operations across the Bay Area. The licensed-and-insured operating status plus the BBB Accredited Business credential plus the 100+ year industry tenure builds a credential-and-tenure stack that places the firm’s third-party verification profile. The Cahill-Kavanaugh operating leadership team carries the contemporary operating capacity forward, with the four-county working radius extending the operational reach across the broader Bay Area peninsula service market.

2. Magic Plumbing & Heating

Address: 1455 Bancroft Avenue, San Francisco, CA 94124
Phones: 415-441-2255 (San Francisco); 650-994-4227 (San Mateo County); 510-444-9100 (East Bay)
Hours: Monday through Sunday, 8:00 AM to 8:00 PM
Operating Since: 1980 (45 years; traces roots to late 1970s as “Magic Rooter” specialized drain cleaning service)
California CSLB License: #698806
Operating Status: Family-owned and locally operated
Credentials: Licensed, bonded, and insured; BuildZoom Top 3% of California contractors (BuildZoom score 112)
Service area: San Francisco plus the broader Bay Area including Oakland, Berkeley, San Mateo, Daly City, Alameda, Burlingame, Millbrae, San Bruno, South San Francisco, Pacifica, Belmont, Redwood City, San Carlos, Emeryville, Albany, Hillsborough, Brisbane, Colma
Website: magicplumbing.com

Magic Rooter Origin Through Magic Plumbing Expansion Since 1980

Magic Plumbing & Heating traces its operating origin to the late 1970s as “Magic Rooter,” a specialized drain cleaning service in San Francisco. The firm expanded its service offerings beyond drain-cleaning into the broader plumbing scope and rebranded to Magic Plumbing, with the contemporary service profile dating to approximately 1980. The 45-year operating zone reaches the post-1970s San Francisco urban-renewal cycle through the 1980s-1990s tech-industry-driven Bay Area population expansion, the 1990s-2000s dot-com-era residential surge, the post-2008 maintenance era, and the contemporary tech-boom-driven Bay Area luxury renovation market. The Bayview headquarters at 1455 Bancroft Avenue places Magic Plumbing geographically adjacent to Malcolm Plumbing’s 184 Mendell Street headquarters, rooting both firms in the same southeast San Francisco industrial-and-commercial corridor.

Three-Area-Code Bay Area Coverage Plus CSLB License #698806

Magic Plumbing operates a distinctive three-area-code regional coverage model with separate phone numbers for the 415 area code (San Francisco proper), the 650 area code (San Mateo County and the southern peninsula), and the 510 area code (East Bay including Oakland, Berkeley, Alameda, Emeryville, Albany). The three-area-code operating structure supports daily-dispatch coverage across the broader Bay Area regional plumbing market, with each area-code phone routing efficiently to the corresponding regional service team. The California CSLB License #698806 frames permit-pulling authority across the state under the C-36 Plumbing Contractor classification, with the BuildZoom Top 3% of California contractors recognition supplementing the underlying state license. The Mon-Sun 8:00 AM to 8:00 PM operating hours extend coverage seven days a week, distinguishing Magic Plumbing from weekday-only Bay Area plumbing competitors.

Bayview Headquarters Plus Eighteen-Community Bay Area Footprint

Magic Plumbing operates from 1455 Bancroft Avenue in the Bayview district of San Francisco (ZIP 94124), with the published service area extending across 18 named Bay Area communities. The 18-community footprint covers San Francisco proper plus the inner-East-Bay corridor (Oakland, Berkeley, Alameda, Emeryville, Albany), the southern peninsula (Daly City, Brisbane, Colma, South San Francisco, San Bruno, Millbrae, Burlingame, Hillsborough, San Mateo, Belmont, Redwood City, San Carlos), and the coastal corridor (Pacifica). The 18-community Bay Area footprint distinguishes Magic Plumbing from neighborhood-secured San Francisco plumbers, with the breadth supporting both inner-San-Francisco renovation work and the broader Bay Area peninsula and East Bay service market through one operating dispatch model. The combined heating-and-cooling service expansion beyond the original drain-cleaning Magic Rooter origin frames the current business profile.

3. O’Grady Plumbing

Address: 1610 Evans Avenue, San Francisco, CA 94124
Phone: (415) 647-9200
Hours: 24/7 emergency service
Operating Since: 1998 (27 years of continuous operation)
Operating Status: Described as “San Francisco’s multigenerational residential and commercial plumbing company”
Response Time Standard: 30-minute emergency response
Credentials: High ratio of Master Plumbers across the technician team
Service area: San Francisco neighborhoods including Richmond, Sunset, Southwest, Twin Peaks, Mt. Davidson, Central, North, Northeast, Central-Eastern, and Southeastern districts; San Mateo
Website: ogradyplumbing.com

Continuous Operation Since 1998 With Master-Plumber Operating Profile

O’Grady Plumbing has operated continuously since 1998, supporting 27 years of San Francisco residential-and-commercial plumbing service through the present-era tech-boom era. The 27-year operating zone reaches the late-1990s dot-com-era residential expansion through the 2000s post-dot-com correction cycle, the 2008-2012 housing-market reset, the 2015-onward tech-boom-driven Bay Area population surge, and the contemporary remote-work-era residential renovation market. The Bayview headquarters at 1610 Evans Avenue places O’Grady geographically adjacent to both Malcolm Plumbing (184 Mendell Street) and Magic Plumbing (1455 Bancroft Avenue) in the southeast San Francisco industrial-and-commercial corridor. The published “high ratio of Master Plumbers” firm profile distinguishes O’Grady from technician-only competitors, with the Master-Plumber-heavy team composition placing the firm’s regulated-work permit-pulling capacity across the San Francisco service area.

Multigenerational Operating Profile Plus 24/7 Thirty-Minute Response

O’Grady Plumbing’s published material describes the firm as “San Francisco’s multigenerational residential and commercial plumbing company,” grounding the family-operated continuity profile across the firm’s 27-year tenure. The 24/7 emergency service availability with a 30-minute response time positions the firm’s emergency-response operating positioning, distinguishing O’Grady from scheduled-only competitors in the San Francisco market. The 30-minute response standard reflects the dense San Francisco geography where the firm’s Bayview headquarters position extends dispatch reach across the relatively compact 47-square-mile San Francisco footprint plus the adjacent Daly City and South San Francisco corridors. The same-day service availability wraps up the operating-hours profile, with the residential-and-commercial dual scope supporting diverse San Francisco service-call work through one operating team.

Ten-District San Francisco Coverage Plus San Mateo Extension

O’Grady Plumbing’s published service area covers ten named San Francisco districts: Richmond, Sunset, Southwest, Twin Peaks, Mt. Davidson, Central, North, Northeast, Central-Eastern, and Southeastern districts. The ten-district footprint covers the full San Francisco peninsular geography from the western Pacific-coast-adjacent Richmond and Sunset corridors through the central Twin Peaks and Mt. Davidson hills into the eastern Mission and Bayview corridors. The San Mateo extension supports operating reach southward into the peninsula corridor adjacent to San Francisco proper. The ten-district footprint plus the San Mateo extension produces a service area that emphasizes deep San Francisco coverage rather than broad Bay Area regional reach, with the daily-dispatch routing supporting both inner-San-Francisco neighborhood service work and the immediate San Mateo County corridor.

4. Sugar Bear Home Services

Address: 317 Corey Way, South San Francisco, CA 94080
Phone: (650) 618-9680
Founder: Lawrence Smith
Operating Since: 2001 (24 years of continuous family-owned operation)
California CSLB License: #946657
License Classifications: C-36 (Plumbing), C-20 (Warm-Air Heating, Ventilating, and Air-Conditioning), C-10 (Electrical)
Operating Status: Family-owned, locally operated; bonded and insured
Operating Philosophy: “Decisions are made by people who live in the community we serve, not a corporate office in another state”
Service area: Bay Area including South San Francisco, Pacifica, Foster City, Burlingame, Tiburon, San Francisco
Website: sugarbearhomeservices.com

Family Operation Since 2001 With Lawrence Smith Founding

Sugar Bear Home Services has operated continuously since 2001 under Lawrence Smith as founder, with the family-owned and locally-operated positioning positioning the firm’s published operating stance across 24 years. The 24-year operating zone reaches the post-2001 dot-com-correction era through the 2008-2012 housing-market reset, the 2015-onward Bay Area tech-boom-driven population surge, and the contemporary remote-work-era residential renovation market. The South San Francisco headquarters at 317 Corey Way places Sugar Bear geographically inside the peninsula corridor adjacent to San Francisco International Airport (SFO), with the South San Francisco position supporting daily-dispatch reach across the southern San Francisco peninsula and into the broader Bay Area service market. The community-rooted operating philosophy (“decisions are made by people who live in the community we serve, not a corporate office in another state”) establishes the firm’s positioning against corporate-rollup competitors that have absorbed many traditional family-owned Bay Area plumbing operations.

Three-Classification CSLB License #946657 Plus Single-Call Home Service Profile

Sugar Bear Home Services operates under California CSLB License #946657, with the license covering three distinct trade classifications: C-36 (Plumbing Contractor), C-20 (Warm-Air Heating, Ventilating, and Air-Conditioning Contractor), and C-10 (Electrical Contractor). The three-classification profile reflects Sugar Bear’s category breadth across plumbing plus HVAC plus electrical work, with the integrated single-license capacity supporting “single-call home service” specification work that distinguishes Sugar Bear from category-specialized competitors in the Bay Area home-services market. The combined three-classification capacity means a single Bay Area homeowner can route plumbing repair plus HVAC service plus electrical panel upgrade through one operating team during comprehensive home service work, removing the typical specification friction between trades on whole-home renovation projects.

South San Francisco Headquarters Plus Six-Community Bay Area Footprint

Sugar Bear operates from 317 Corey Way in South San Francisco (ZIP 94080), with the headquarters position shaping daily-dispatch reach across the southern Bay Area peninsula. The published service area covers six named communities: South San Francisco (the operating base), Pacifica (the Pacific-coast adjacent community), Foster City (the Foster City Lagoon planned-community), Burlingame (the inner peninsula corridor), Tiburon (the North Bay Marin County affluent enclave), and San Francisco proper. The six-community footprint concentrates on the high-net-worth Bay Area peninsula corridor where 1980s-2000s residential building stock dominates, with the family-owned operating philosophy distinguishing Sugar Bear from corporate-rollup competitors. The integrated three-trade single-call working framework supports both the residential-renovation segment and the small-commercial-tenant-improvement market across the dense Bay Area peninsula service area.

Reference Notes

San Francisco plumbing licensing runs through the California Contractors State License Board (CSLB), with the C-36 Plumbing Contractor classification setting residential and commercial work. The San Francisco Department of Building Inspection issues municipal building permits within city limits. The San Francisco Public Utilities Commission (SFPUC) handles water-and-sewer connections and backflow-certification compliance. California layers in additional pressures: State Water Resources Control Board drought-era conservation rules, the California Plumbing Code’s seismic-zone provisions for the San Andreas and Hayward Faults, and Title 24 energy-code revisions driving heat-pump-and-tankless-water-heater specification.

The 1906 earthquake-and-fire destroyed roughly 80 percent of the pre-1906 building stock. Reconstruction across 1907-1920 reshaped the downtown core and the inner-loop residential neighborhoods. Pacific Heights, Presidio Heights, and Sea Cliff filled out with prewar luxury homes in the 1920s-1930s. The Sunset and Richmond Districts saw postwar tract expansion in 1940-1965. Tech-industry-driven luxury renovation surged in the 1990s-2000s and continues today.

The four firms profiled cover four positions on the San Francisco market arc. Malcolm Plumbing & Mechanical (100+ years in the trade, Matthew Cahill as President, Kevin Kavanaugh II as Vice President, BBB Accredited family-owned, Bayview Mendell Street headquarters) covers four counties: San Francisco, Marin, San Mateo, and Santa Clara, across 16 named cities. Magic Plumbing & Heating (1980 founding from late-1970s Magic Rooter origin, California CSLB License #698806, BuildZoom Top 3 percent score 112) runs three area-code phone lines (415, 650, 510), operates Mon-Sun 8:00 AM to 8:00 PM, and serves 18 Bay Area communities. O’Grady Plumbing (1998 founding, multigenerational positioning, 24/7 service with 30-minute response standard, high Master Plumber ratio across technicians) covers ten San Francisco districts plus San Mateo from a Bayview Evans Avenue base. Sugar Bear Home Services (2001 founding by Lawrence Smith, California CSLB License #946657 covering C-36 Plumbing plus C-20 HVAC plus C-10 Electrical) runs out of South San Francisco Corey Way near SFO across six peninsula communities.

Verification paths run through the CSLB lookup at cslb.ca.gov, BBB San Francisco listings, the PHCC of California directory, the San Francisco Department of Building Inspection contractor records, and the BuildZoom scoring database. Pre-1930 reconstruction-era housing tilts toward Malcolm’s century-spanning trade depth. Multi-county Bay Area work fits Magic’s three-area-code coverage. District-level San Francisco service fits O’Grady’s ten-district footprint. Three-trade single-call peninsula work fits Sugar Bear’s CSLB classification 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 San Francisco, 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 San Francisco, 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 San Francisco, 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 San Francisco, 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 San Francisco?

Burst pipes, sewer backups, gas leaks, no-water events, and water heater failures justify after-hours dispatch. 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.