BLOG

How to Start a Plumbing Business With No Money (UK Guide 2026)

By Paul Lewis — time-served tradesman with over 40 years in the building services industry, former owner of his own contracting business, and five years teaching apprentices and adult learners in further education.

Most plumbers who want to go self-employed don’t have thousands of pounds sitting in the bank. The good news is that you don’t need them. You can start a plumbing business on very little money, as long as you’re clear about which costs you can’t avoid and which ones can wait.

This guide explains how to start small, keep your costs down, and let the work pay for the business as it grows.

Be realistic: “no money” means “very little money”

There are a few costs nobody can avoid:

Public liability insurance. Around £150–£300 a year for £2m cover. You should never work without it, and most customers will ask for it.
Gas Safe registration, but only if you’ll do gas work. A new registration costs £383.95 including VAT for 2026/27, covering your first year.
Basic tools and test equipment for the work you’re taking on.
A way to get to jobs with your tools.

If you already have your tools and a vehicle, you could be up and running for a few hundred pounds. Everything else can be added as the money comes in.

1. Start part-time while you’re still employed

The lowest-risk way to start is to keep your job and take on evening and weekend work at first. Your wages cover your living costs while you build up customers, reviews and savings. When the self-employed work is regularly filling your spare time, that’s the point to think about going full-time.

Check your employment contract first. Some employers don’t allow you to do private work, especially for their customers.

2. Use what you already have

You probably own most of the hand tools you need already. Don’t buy anything until a job needs it. When you do need something, buy good-quality used tools, or buy the item when the job that needs it has paid for it.

The same goes for your van. If your current vehicle can carry your tools and materials safely, keep using it. A used van at £5,000–£12,000 is a big outlay, and buying a new one on finance in your first year is one of the quickest ways to put a new business under pressure.

If you must buy a van, buy a reliable used one for cash if you can, and avoid long finance deals until your income is steady.

3. Get customers to pay for materials

You should never fund a customer’s new boiler or bathroom out of your own pocket.

Take a deposit on larger jobs to cover materials before you order them.
For smaller jobs, invoice materials at the same time as labour, and ask for payment on completion.
Open a trade account with a plumbers’ merchant. Many offer 30 days’ credit, which means you can buy materials, finish the job and get paid before the merchant’s bill is due. Use it carefully: it’s still money you owe.

4. Work for other people to begin with

Subcontracting to a builder, a kitchen and bathroom fitter or a bigger plumbing firm is a good way to start with almost no outlay. You’re paid a day rate, they usually supply the materials, and you don’t have to find your own customers.

It won’t pay as much as working directly for homeowners, but it gives you a steady income while you build your own customer base on the side. If you work for builders, you’ll need to register for the Construction Industry Scheme (CIS).

5. Use free marketing

You don’t need to pay for adverts or lead websites when you start.

Google Business Profile is free and is often the first thing people see when they search for a local plumber. Set it up on day one and add photos of your work.
Ask every happy customer for a Google review. A handful of good reviews makes a big difference.
Local Facebook groups and community pages are full of people asking for a reliable plumber.
Tell everyone you know that you’re now working for yourself. Most new plumbers get their first jobs through people they know.
Builders, letting agents and landlords are worth contacting directly. One good relationship can provide regular work for years.

Paid lead websites and directories can come later, when you know your prices and can afford to test them.

6. Keep the admin cheap

Registering as a sole trader with HMRC is free. You don’t need an accountant or expensive software straight away: a simple spreadsheet and a free invoicing app are enough for most people starting out. Keep every receipt from day one.

You will need proper accounting software if your income goes over £50,000, because from April 2026 sole traders above that level must keep digital records under Making Tax Digital.

Open a separate bank account for the business, even if it’s a free one. It makes your tax return much easier.

7. If you need to borrow, borrow carefully

If you can’t start without borrowing, the government-backed Start Up Loans scheme lends up to £25,000 per person at a fixed interest rate, with free mentoring included. It’s usually a better option than a credit card or high-interest van finance. Only borrow what you need for kit that will earn its keep.

8. Don’t undercharge to win work

When money is tight, it’s tempting to price low to get busy quickly. It’s a mistake. Low prices leave nothing to cover your insurance, van, tools and time off, and customers who chose you because you were cheapest will leave for someone cheaper.

Work out what your business really costs to run, decide how many hours you can realistically charge for, and set a rate that covers both with a profit on top.

Planning to go self-employed? How to Start Up and Run Your Own Plumbing and Heating Business by Paul Lewis takes you through every stage, from getting registered and setting your prices to finding customers and managing cash flow. It includes a self-employment readiness check, a sample terms and conditions template and a chapter-by-chapter action checklist. See inside the book →

A low-cost start: the checklist

Check your employment contract allows private work.
Get public liability insurance.
Register with Gas Safe if you’ll do gas work.
Register as a sole trader with HMRC and open a separate bank account.
Use your existing tools and vehicle for now.
Open a trade account with a local merchant.
Set up a free Google Business Profile.
Work out a price that covers your costs.
Take deposits on larger jobs.
Build up savings before going full-time.

Frequently asked questions

Can I really start a plumbing business with no money? Not quite none, but you can start with a few hundred pounds if you already have tools and transport. Insurance and, if you do gas work, Gas Safe registration are the costs you can’t avoid.

Do I need a van to start? Not necessarily. If your current vehicle can carry your tools and materials safely, use it until the business can afford a van.

Should I take out a loan? Only if you need to, and only for things that will help you earn. A Start Up Loan is usually cheaper than credit cards or high-interest finance.

How do I get my first customers without paying for adverts? Tell people you know, set up a free Google Business Profile, ask for reviews, and contact local builders, landlords and letting agents.

For everything else you need to know, see our full guide: How to Start a Plumbing Business in the UK (2026).

Figures are typical 2026 costs and are a guide only. Check current fees with Gas Safe Register, HMRC and your insurer before you start.