Trade directory · Dearborn metro · Michigan

Plumbing contractors in
Dearborn, Michigan.

A public directory of licensed plumbing contractors serving greater Dearborn. Market data, licensing requirements, and cost benchmarks — updated continuously from public sources.

Licensed Establishments
2,574
U.S. Census Bureau
Peak Season
October through March - heating system failures and frozen pipe repairs drive winter demand
Market estimate
Avg. Response Time
24-48 hours for quotes, same-day for emergency calls
Operator average
§ A · Market rates

Common Job Costs

DEARBORN-MI · LOCAL ESTIMATES
Service
Description
Cost Range
Drain cleaning
Typical range based on local drain cleaning jobs.
$150 – $400
Water heater replacement
Typical range based on local water heater replacement jobs.
$1,200 – $3,500
Toilet installation
Typical range based on local toilet installation jobs.
$300 – $800
Kitchen sink plumbing
Typical range based on local kitchen sink plumbing jobs.
$400 – $1,200
Main water line repair
Typical range based on local main water line repair jobs.
$800 – $2,800
Bathroom remodel plumbing
Typical range based on local bathroom remodel plumbing jobs.
$1,500 – $4,500
§ B · Regulatory

Licensing Requirements

MI
§1

Licensing Requirements

Michigan requires Master Plumber License through LARA. Must complete 4-year apprenticeship or equivalent experience, pass state exam, maintain $25,000 bond. Journeyman license available after apprenticeship completion. Continuing education required every 3 years.

§2

Permit Requirements

Dearborn requires permits for water heater replacement, new fixture installation, main line work. Permits range $50-200. Same-day emergency permits available through city building department.

§3

Inspection Schedule

Rough-in inspection before covering work, final inspection before occupancy. Schedule 24-48 hours in advance through Dearborn Building Department.

§4

Insurance Minimums

General liability minimum $300,000, workers compensation required for employees, vehicle insurance minimum $1 million for commercial vehicles

§ C · Path to license

How to Get Licensed

5 STEPS
1

Complete Apprenticeship

Complete 4-year registered apprenticeship program or document equivalent work experience under licensed master plumber. Must include 8,000 hours on-the-job training plus classroom instruction.

01/05
2

Pass State Examination

Schedule and pass Michigan Master Plumber examination through PSI Services. Covers plumbing code, safety, business practices. Exam fee $75, offered at testing centers statewide.

02/05
3

Obtain Bonding

Secure $25,000 surety bond from licensed bonding company. Required before license application submission. Bond protects consumers from contractor default or code violations.

03/05
4

Submit Application

File Master Plumber License application with Michigan LARA including exam results, bond documentation, experience verification, and $75 fee. Processing takes 4-6 weeks.

04/05
5

Maintain License

Renew every 3 years with continuing education requirements and $60 renewal fee. Complete required safety and code update courses through approved providers.

05/05
§ D · Field notes

About This Market

UPDATED APR 2026

Dearborn's plumbing market serves 94,000 residents in aging housing stock - 60% built before 1970. High demand for water line replacements, sump pump work, and boiler service in older homes. Competition is moderate with established local shops dominating residential work. Ford Motor Company headquarters drives some commercial opportunities. Material costs run 10-15% higher than state average due to Detroit metro pricing. Winter freeze-thaw cycles create steady pipe repair business. Most contractors specialize either residential service or new construction - rarely both profitably. The city's working-class demographics keep price sensitivity high, but homeowners invest in necessary repairs. Emergency calls during polar vortex events can command premium rates. Established relationships with local supply houses critical for competitive material pricing.

Data Sources
  • Licensed establishments count
    US Census Bureau
  • Licensing requirements
    Michigan LARA licensing board
  • Permit costs and procedures
    Dearborn Building Department
  • Cost ranges
    Market analysis estimates
  • Insurance minimums
    Michigan contractor insurance requirements
  • Demographics and housing age
    US Census American Community Survey
§ E · FAQ

Frequently Asked Questions

05 QUESTIONS
Q/01

What does a Master Plumber License cost in Michigan?

Initial Master Plumber License costs $75 plus $25,000 bonding requirement. Renewal every 3 years costs $60 plus continuing education credits, per Michigan LARA licensing board.

Q/02

How long does plumber licensing take in Michigan?

Minimum 4 years - complete apprenticeship program or equivalent work experience, then pass state examination. Processing time for license application is typically 4-6 weeks after exam passage.

Q/03

What permits do I need for water heater replacement in Dearborn?

Mechanical permit required for all water heater replacements, costs $75-125 depending on BTU rating. Schedule inspection within 24 hours of completion through Dearborn Building Department.

Q/04

What drives plumbing costs in Dearborn?

Aging housing stock with galvanized and cast iron requiring replacement, difficult basement access in older homes, and Detroit metro material pricing. Emergency winter calls command 50-100% premium rates.

Q/05

How many licensed plumbing contractors operate in Michigan?

Approximately 2,574 licensed plumbing establishments operate statewide according to Census data, with concentrated competition in metro Detroit including Dearborn market.

§ F · Directory

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