Quick Comparison
| Firm | Founded / Tenure & Credentials | Services & Specialties | Geographic Focus |
|---|---|---|---|
| Johnny Doan Plumbing | 1969 (Johnny Doan founder); current owner Jimmy Waldrop; three generations of family operation | FL CFC license (Certified Plumbing Contractor), BBB Accredited | US Hwy 92 base in Seffner (33584); Central Florida, Hillsborough County, Tampa Metro |
| Dyser Plumbing Company | 1974 (Ronald L. Dyser founder, Sylvia Dyser Vice President); Dyser family ownership | FL CFC license, BBB Accredited | Oakhurst Terrace and W Crenshaw Street bases in Tampa (33618, 33634); Tampa Bay |
| Alvarez Plumbing & Air Conditioning | 1976 (Alvarez family founders); family-owned, minority-owned, veteran-owned | FL CFC019219 plus CAC1822951, BBB Accredited | Tampa Bay (Tampa, Brandon, Riverview, Carrollwood, Temple Terrace, South Tampa, Davis Island, Land O' Lakes, Lutz, Plant City, Wesley Chapel, St. Petersburg, Clearwater, Bradenton) |
| Olin Plumbing, Inc. | 2008 firm-name founding; Derek Olin (Master Plumber since 1983); family-owned and operated | FL CFC1428000, FL Master Plumber (Derek Olin since 1983), BBB Accredited | E 8th Avenue base in Tampa (33605); Tampa Bay |
1. Johnny Doan Plumbing
- Address: 301 West US Hwy 92, Seffner, FL 33584
- Phone: (813) 531-9930
- Founder: Johnny Doan (founded 1969); current owner Jimmy Waldrop; three generations of family operation; 50+ years of industry experience
- Operating Since: 1969 (57 years)
- License: Florida CFC Certified Plumbing Contractor; licensed and insured
- Service area: Tampa, Seffner, Brandon, Valrico, Plant City, Riverview, Lithia, Mango, Ybor City, Town N Country, Carrollwood, Temple Terrace, Lutz, Wesley Chapel, Hillsborough County
- Website: doanplumbing.com
Three Generations Plus 57 Years of Family Operation
Johnny Doan founded the firm in 1969. The operation has grown into an independent family-owned business serving Central Florida and the Tampa area for more than 50 years. Current owner Jimmy Waldrop leads contemporary operations across three generations of family operating involvement. The 57-year tenure spans the post-1970 Tampa Metro residential expansion through the contemporary period.
Seffner US Hwy 92 Operating Base
The 301 West US Hwy 92 headquarters sits in Seffner, the unincorporated Hillsborough County community immediately east of Tampa proper. The position speeds dispatch reach across Hillsborough County. Service extends through Brandon, Valrico, Plant City, Riverview, and the broader eastern Tampa Bay corridor. Operating hours run Monday through Friday 8am to 4:30pm with weekend emergency service.
Florida CFC Certified Plumbing Contractor
Johnny Doan Plumbing operates under Florida CFC Certified Plumbing Contractor licensing through the Florida Construction Industry Licensing Board (CILB). The licensed-and-insured operating posture covers liability and workers’ compensation. Service mix covers residential plumbing repair, drain cleaning, water heater service, sewer service, and the broader plumbing-trade scope across the Tampa Bay residential market.
2. Dyser Plumbing Company
- Address: 4312 Oakhurst Terrace, Tampa, FL 33618 (mailing PO Box 153086, Tampa, FL 33684); 5430 West Crenshaw Street, Tampa, FL 33634
- Phone: (813) 269-4790
- Founder: Dyser family (incorporated 1974); current President Ronald L. Dyser plus Vice President Sylvia Dyser; family-owned and operated
- Operating Since: 1974 (52 years); Dyser family ownership across the entire history
- License: Florida CFC Certified Plumbing Contractor; BBB Accredited
- Service area: Tampa, Carrollwood, Town N Country, Egypt Lake-Leto, Westchase, Citrus Park, Lutz, Land O’ Lakes, Wesley Chapel, Temple Terrace, Brandon, Riverview, South Tampa, North Tampa, Hillsborough County
- Website: dyserplumbing.net
Dyser Family Ownership Plus 52 Years of Tampa Bay Service
Dyser Plumbing Company incorporated in 1974 and has been growing alongside Tampa Bay ever since. The firm has remained family-owned and operated since the beginning. Ronald L. Dyser serves as current President. Sylvia Dyser serves as Vice President. The husband-and-wife operating leadership reflects deliberate family-business operating-tradition continuity.
Dual Tampa Operating Bases
The 4312 Oakhurst Terrace address sits in north Tampa near Carrollwood. The 5430 West Crenshaw Street address grounds west Tampa. The dual-location footprint enables rapid dispatch across Tampa Bay. Service extends through Hillsborough County, including Carrollwood, Town N Country, Egypt Lake-Leto, Westchase, Citrus Park, plus the northern suburbs (Lutz, Land O’ Lakes, Wesley Chapel) and eastern corridor (Temple Terrace, Brandon, Riverview).
FL CFC Compliance and BBB Accreditation
Dyser Plumbing operates under Florida CFC Certified Plumbing Contractor licensing through the Florida CILB. BBB Accreditation provides third-party reputation verification through BBB West Florida. Service mix covers residential and commercial plumbing repair, water heater service, drain cleaning, sewer service, and the broader plumbing-trade scope across Tampa Bay.
3. Alvarez Plumbing & Air Conditioning
- Address: 1623 South 51st Street, Tampa, FL 33619
- Phone: (813) 278-6222
- Founder: Alvarez family (founded 1976); minority-owned business; veteran-owned company that employs veterans
- Operating Since: 1976 (50 years); celebrating the 50th anniversary milestone
- License: Florida CFC019219 (Certified Plumbing Contractor); Florida CAC1822951 (Air Conditioning Contractor); BBB Accredited
- Service area: Tampa, Brandon, Riverview, Carrollwood, Temple Terrace, South Tampa, Davis Island, Land O’ Lakes, Lutz, Plant City, Wesley Chapel, St. Petersburg, Clearwater, Bradenton, Ruskin, surrounding Tampa Bay communities
- Website: alvarezplumbing.com
Alvarez Family 50th Anniversary Operating Milestone
The Alvarez family founded the firm in 1976. The operation has grown across 50 years of family-owned, minority-owned, and veteran-owned operating heritage. The firm celebrates its 50th anniversary milestone in 2026. The minority-and-veteran-owned designation provides a recognized small-business classification, plus the firm employs veterans across the operating team.
Tampa Bay Wide-Area Service Geography
Alvarez Plumbing serves the greater Tampa Bay region across two counties: Hillsborough (Tampa, Brandon, Riverview, Carrollwood, Temple Terrace, South Tampa, Davis Island, Plant City) and Pasco (Land O’ Lakes, Lutz, Wesley Chapel) plus Pinellas (St. Petersburg, Clearwater) plus Manatee (Bradenton) plus Hillsborough’s southeast (Ruskin). The wide-area service grid covers more than 15 named Tampa Bay communities.
Dual FL CFC019219 Plus CAC1822951 Credential Stack
Alvarez Plumbing & Air Conditioning holds two Florida credentials: CFC019219 Certified Plumbing Contractor plus CAC1822951 Certified Air Conditioning Contractor. The dual classification supports residential customers needing both plumbing and HVAC service under one operating relationship. The integrated service stack distinguishes Alvarez from plumbing-only operators in the Tampa Bay market.
4. Olin Plumbing, Inc.
- Address: 3201 East 8th Avenue, Tampa, FL 33605
- Phone: (813) 443-5820
- Founder: Derek Olin (founded firm 2008; Master Plumber since 1983); family-owned and operated
- Operating Since: 2008 firm-name founding; Derek Olin’s Master Plumber career since 1983 brings 40+ years of cumulative trade experience
- License: Florida CFC1428000 Certified Plumbing Contractor; Florida Master Plumber (Derek Olin since 1983); BBB Accredited
- Service area: Tampa (Ybor City, Hyde Park, Channelside, downtown, South Tampa, North Tampa, Carrollwood, Temple Terrace, Town N Country, Westchase, New Tampa), Brandon, Riverview, Plant City, Wesley Chapel, Hillsborough County
- Website: plumberstampa.com
Derek Olin Master Plumber Career Plus 2008 Firm Founding
Derek Olin earned his Florida Master Plumber credential in 1983, bringing 40+ years of personal trade experience into the founding of Olin Plumbing in 2008. The 18-year firm-name tenure plus the cumulative 40+ year Master Plumber career provides operating-context depth that newer founder-only firms typically lack. The family-owned operating structure has remained intact across the firm’s history.
East 8th Avenue Tampa Operating Base
The 3201 East 8th Avenue headquarters sits in east Tampa near the Ybor City historic district. The position extends dispatch reach across central and eastern Tampa neighborhoods plus the broader Hillsborough County market. Service extends through Ybor City, Hyde Park, Channelside, downtown Tampa, South Tampa, and the surrounding suburban corridor.
FL CFC1428000 Plus Master Plumber Credentialing Plus 1983-Origin Career
Olin Plumbing holds Florida CFC1428000 Certified Plumbing Contractor licensing. Derek Olin’s Florida Master Plumber credential dates to 1983. The Master-Plumber-since-1983 trade tenure plus the 2008 firm-name founding combination supports operating-experience depth across Tampa Bay’s diverse residential housing stock. BBB Accreditation provides third-party reputation verification through BBB West Florida.
Reference Notes
Florida plumbing licensing runs through the Construction Industry Licensing Board (CILB) under the Department of Business and Professional Regulation (DBPR). The CFC (Certified Plumbing Contractor) classification secures plumbing-specific work. Verification runs through myfloridalicense.com. Hillsborough County administers building permits within unincorporated Hillsborough County. The City of Tampa Construction Services Center issues building permits within Tampa city limits. Tampa Water Department handles water service connections plus annual backflow-prevention testing across the city. Florida Building Code Hurricane Wind Zone provisions shape mechanical-system specifications across the Gulf-coast-exposed Tampa Bay market.
Tampa-area residential housing reflects roughly 130 years of construction. Pre-1900 housing remains in Ybor City (the historic Cuban-cigar-manufacturing district) plus parts of Hyde Park. Hyde Park, Seminole Heights, Tampa Heights, and parts of South Tampa filled out with bungalow and Craftsman housing 1900-1940. Postwar tract construction built out Town N Country, Carrollwood, Temple Terrace, and Brandon through 1945-1975. The 1980s-1990s drove the Carrollwood, Westchase, and New Tampa master-planned-community surge. Wesley Chapel, Land O’ Lakes, and the northern Hillsborough corridor extended outer-suburban growth through the 2000s. Hot-humid Gulf-coast climate plus annual hurricane-flood exposure plus high-water-table conditions plus saltwater-corrosion exposure shape recurring service categories: cast-iron drain replacement in pre-1970 stock, sewer-line repair, post-storm restoration plumbing, and pool-plumbing service.
The four firms profiled cover four positions on the Tampa Bay market arc. Johnny Doan Plumbing leads tenure with Johnny Doan’s 1969 founding plus 57 years of family operation across three generations under current owner Jimmy Waldrop, from a Seffner US Hwy 92 base. Dyser Plumbing Company follows with 52 years of Dyser family operation since the 1974 incorporation, under President Ronald L. Dyser plus Vice President Sylvia Dyser, from dual Oakhurst Terrace and West Crenshaw Street Tampa bases. Alvarez Plumbing & Air Conditioning brings 50 years of Alvarez family operation since the 1976 founding (minority-owned plus veteran-owned plus veteran-employing), plus dual Florida licensing under CFC019219 plus CAC1822951 for plumbing-and-HVAC integrated service. Olin Plumbing, Inc. runs Derek Olin’s 2008 firm founding plus his 1983-origin Florida Master Plumber career (40+ years cumulative trade experience) under FL CFC1428000.
Verification paths run through myfloridalicense.com, BBB West Florida listings, the PHCC of Florida directory, and the City of Tampa Construction Services Center contractor records. Pre-1940 Hyde Park, Ybor City, and Seminole Heights housing tilts toward Johnny Doan’s 57-year three-generation depth. Hillsborough County wide-area service across two Tampa locations fits Dyser. Multi-trade plumbing-and-HVAC integrated service across the bi-county Tampa Bay footprint fits Alvarez. Master-Plumber-since-1983 service plus East Tampa operating base fits Olin.
Selection Methodology
Selection follows four criteria. First, continuous family ownership or founder-operator continuity outside the national rollup pattern. Second, verifiable Florida CFC Certified Plumbing Contractor license cross-checked via the Florida CILB through Department of Business and Professional Regulation public lookup. Third, BBB Accreditation or equivalent third-party rating. Fourth, minimum 10-year continuous operating tenure with documented Tampa 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 Tampa plumber’s license?
Use the Florida CILB through Department of Business and Professional Regulation public licensee database at myfloridalicense.com. Search by license number or business name. Confirm active status, classification, bonding, and insurance before authorizing work.
What credentials should a Tampa plumber hold?
At minimum: Florida CFC Certified 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 Tampa 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 Tampa?
Burst pipes, sewer backups, gas leaks, no-water events, and water heater failures justify after-hours dispatch. Hurricane-flood events drive substantial post-storm emergency demand across Tampa Bay. 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 Florida CILB public lookup before authorizing work. Information current as of the date below; firm details may change without notice. Last updated: 2026-05-10.