How Plumbers Can Find Trusted Tradespeople for Project Referrals (2026 Guide)
How UK plumbers can find reliable electricians, tilers and builders to recommend, from checking registrations and insurance to scoring candidates and setting clear referral terms.
A customer has just asked you to recommend a tiler for the bathroom you are fitting. You know a few names, but you have only seen one of them work, and that was two years ago.
If you pass on the wrong person and they turn up late, leave a mess or damage your pipework, the customer will remember that you recommended them.
Referrals can bring steady work to your own business and build loyalty with customers, but they carry risk that comes from putting your name behind someone else’s work.
This guide covers where plumbers can find reliable tradespeople to refer, what to check before recommending anyone, how to score candidates fairly, and how to set up referral arrangements that protect you and the customer.
Why referrals are worth the effort
A plumber is rarely the only trade on a job. A bathroom refit might involve a strip-out, first-fix plumbing and electrics, plastering, tiling, second-fix, and decorating. If the customer has to find each trade separately, the project stalls whenever one of them cancels.
A plumber who can say “I work with a tiler and an electrician I trust” removes a lot of that worry, and the customer is more likely to keep you on the job and call you back later. The same works in reverse. Electricians, builders, plasterers, kitchen fitters and letting agents regularly need a plumber, and they tend to pass work to the people they already know are dependable.
A solid referral network is a two-way flow. The key risk is reputational. Customers rarely distinguish between the person who did the work and the person who recommended them. A referral list is only as strong as its weakest name, so it pays to be selective.
Where to find tradespeople worth referring
There is no single best source. Different routes suit different needs, and the table below compares the most common ones.
| Source | What it offers | Watch out for |
|---|---|---|
| Colleagues and past job sites | You have seen their work or heard first-hand feedback | A small pool, and your own bias towards friends |
| Trade merchants and counters (Plumb Center, Screwfix, local independents) | Staff often know who is reliable and who pays suppliers on time | Recommendations are informal and unchecked |
| Trade bodies (FMB, NICEIC, NAPIT, APHC, CIPHE) | Members are assessed against a published standard | Membership shows credentials, not how someone behaves on site |
| Review platforms (Checkatrade, TrustMark, Rated People, MyBuilder) | Customer reviews and vetting of various levels | Standards and fees vary by platform, so read how each one vets members |
| Local Facebook and WhatsApp groups | Quick, local, current feedback | Mixed quality, and reviews can be hard to verify |
| Trade networking apps | A way to find and connect with tradespeople by trade and area | Check profiles and references yourself, as with any other source |
Most plumbers end up using a mix. If you want a place to build contacts beyond your immediate circle, tradespeople networking apps such as MESHHH let you look up other trades in your area and get in touch directly, which can be useful alongside word of mouth.
Checking credentials by trade
Some trades have legal requirements and registers you can check. Others have no mandatory licence, which makes evidence of past work more important. Here is a practical summary.
| Trade | What to check | Where |
|---|---|---|
| Gas engineers | Gas Safe registration, which must be renewed annually, and the types of gas work covered by their ID card | Gas Safe Register |
| Electricians | Membership of a competent person scheme such as NICEIC or NAPIT, which allows them to self-certify notifiable work in England | The scheme’s online register |
| Approved plumbers (water fittings) | WaterSafe registration | WaterSafe |
| Oil or solid fuel installers | OFTEC or HETAS registration respectively | OFTEC or HETAS registers |
| Builders and general contractors | FMB membership or TrustMark registration if claimed, plus references | FMB and TrustMark |
| Tilers, plasterers, joiners, decorators | No single legal licence, so check insurance, references and finished work | Direct from the tradesperson |
For every trade, ask for a copy of their public liability insurance certificate and check the dates and the cover level. Many customers and contractors expect at least £2 million of cover, though the right figure depends on the type and size of job. If they work on commercial or larger sites, a CSCS card is often required for site access.
A registration confirms someone is qualified. It does not tell you whether they turn up on time or leave a tidy site, so credentials are only the starting point.
A simple scoring framework
When you are choosing between two or three candidates, a short scorecard helps you compare them on the same basis. This example uses a 100-point scale. Adjust the weightings to suit your own priorities.
| Criterion | Points | What you are looking for |
|---|---|---|
| Qualifications and registration | 25 | Relevant registers checked and current |
| Quality of finished work | 25 | You have seen completed jobs in person or in photos from named customers |
| Reliability | 20 | Keeps appointments, finishes on the agreed timescale, tells you early about delays |
| Insurance and paperwork | 15 | Valid certificate, written quotes, clear invoices |
| Communication | 15 | Answers calls and messages, explains problems plainly |
Say you are comparing two tilers. Tiler A is not on a trade body register but has strong finished work (24), reliable references (18), valid insurance and clear paperwork (14) and good communication (13), and scores 69 once qualifications are added (0 here, as none apply).
Tiler B belongs to a trade body (20), has decent work (17), mixed reliability (10), valid insurance (15) and quick replies (13), for a total of 75. The scores will not make the decision for you, but they show where each person is strong and where to dig further before recommending anyone.
Test before you recommend
Credentials and a scorecard can narrow the field, but nothing replaces seeing someone work.
- Start with a smaller job. Using a new tradesperson on a modest job, perhaps one where you are the customer, shows you how they communicate, whether they protect the property, and how they deal with problems. Two or three jobs is a better test than one.
- Ask for references and speak to them. Two or three recent customers, ideally with similar jobs to the one you have in mind. Ask whether the work was finished on time, how snags were handled and whether they would use the person again.
- Ask other trades. An electrician or plasterer who has worked alongside them will often give you a franker view than a customer will.
- Visit finished work where you can. A tiled bathroom tells you more about quality than any photo, especially around edges, grout lines and fittings.
Agreeing how the referral will work
Informal handshakes are common in the trades, and they cause most of the disputes. Even a short written note, sent by email or message, avoids confusion. Cover these points:
- Whether any referral fee or reciprocal arrangement exists, and when it is paid.
- Who the customer’s contract is with. In most cases the tradesperson contracts directly with the customer, and you are only making an introduction.
- Who deals with problems if the work is faulty. Under the Consumer Rights Act 2015, services must be carried out with reasonable care and skill, and that obligation sits with whoever the customer contracted with.
- Insurance cover and what each party carries.
Customer data matters too. Passing someone’s name, phone number or address to another trader is processing personal data under UK GDPR. A simple way to handle it is to ask the customer for permission first and then let them choose whether to share their details or contact the tradesperson themselves.
Keeping your referral list in good shape
A list that was strong two years ago can drift. Someone moves away, changes their working pattern or lets their registration lapse. Keep a simple record in a spreadsheet or in the job management software you already use, such as Tradify, ServiceM8 or Jobber.
For each name, note the trade, area, registration and insurance expiry dates, the jobs you have referred and any customer feedback. Review the list at least every six months. Remove or pause anyone whose standards have slipped, and thank those who have sent work your way, since reciprocity keeps the relationship going.
If you would like to grow your contacts in a structured way, a construction platform for plumbers can help you find and keep in touch with other trades in your area, as long as you apply the same checks you would to any other source. A short note about the platform’s contacts in your own records will keep things tidy.
Where to start
Pick the trade you refer most often, whether that is electricians, tilers or builders, and run two or three candidates through the scorecard this week. Check their registrations and insurance, speak to at least two references and agree a small first job. Once you have one tested name in that trade, repeat the process with the next.
Published by blog.crecso.com
