How to Spot a Dodgy Plumber: 8 Warning Signs You Shouldn’t Ignore

June 7, 2025

Hiring a plumber can be a stressful experience, especially when you’re dealing with damaging leaks, clogged pipes or a full-blown plumbing emergency. While there are plenty of reliable, qualified professionals out there, unfortunately, there are also a few less than honest individuals who give the trade a bad name. Knowing how to spot a dodgy plumber could save you money, time, and a whole lot of frustration.

 

Here are 8 warning signs that should raise suspicions: 

1.    They Won’t Provide a Written Quote.


Before beginning any work, a reliable plumber should have no trouble providing you with a detailed, itemized price in writing. Be extremely wary if they sidestep the subject, demand payment in cash up front, or say anything like "we'll sort it out later."
 

Advice: Always obtain several quotes and evaluate them. A trustworthy plumber will be open and honest about prices and schedules. 


2.    They Lack Proper Licensing or Insurance


All legitimate and competent plumbers are fully licensed and insured. This guarantees they have fulfilled the bare minimum of safety and training requirements. An important warning sign is when a plumber refuses to provide documentation of their insurance or license.


Why it's important: If something goes wrong and they don't have insurance, you might have to pay for it. 


3.    They Push You to Start Working Right Away


Yes, there may be some serious plumbing problems that need to be addressed right away, but avoid scare tactics. Untrustworthy plumbers may overstate the extent of an issue in order to pressure you into making a costly choice.


Follow your instincts: Before making expensive repairs, obtain a second opinion if something doesn’t seem right.


 

4.     They don't have an online presence or have bad reviews.

 

The majority of respectable trades and businesses in today's digital era have an internet presence, whether it is a website, a Google listing, or reviews on Yelp or Trustpilot. Proceed with caution if you are unable to locate any reviews or if the ones you do find are constantly unfavourable.

 

5.     They Use Low-Cost Materials Without Inquiring
 

A less than honest plumber may low-cost parts or accessories to save money, which could cause more issues later. A competent plumber will inform you of what is being installed and go over your options.


Pro tip: Before they start working, ask for brand names or specifications. 

 

6.    They Don't Clean Up After Themselves

 

It might seem like a minor detail, but a messy work area can reflect a sloppy or careless attitude. A professional will treat your home with respect and clean up once the job is done.

 

7.    The Price Constantly Changes.


Providing a low price to get your business and then continuing to add "unexpected" fees is one of the more usual dishonest plumber tactics. Although adjustments are possible, any price increases must be justified and approved in writing.



8. They Refuse to Offer You a Contract.

 

 
Make sure you have a contract before starting any significant job. A scope of work, anticipated time frame, cost, and payment schedule should all be included. In order to operate with no accountability, a dishonest plumber might completely bypass this.


In Conclusion

 
When hiring any tradesperson, trust and openness are essential. Avoid a plumber who appears dubious, inconsistent, or unwilling to respond to your inquiries. Finding the correct person for the job may take a little more time and effort, but it probably be worth it in the long-run.

 

Your pipes (and your wallet) will thank you.

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