10 Questions to Ask Before Hiring Any Tradesperson

Bringing a tradesperson into your home takes trust. You want the job done right, at a fair price, without nasty surprises.

That is why asking the right questions before you hire is so important. A good conversation can save you money, time and a lot of worry. Our guide on how to choose a trustworthy professional covers the full process.

Why Asking Questions Matters

Every year, thousands of UK homeowners regret hiring the wrong person. Shoddy work, inflated bills, or jobs left unfinished are common complaints.

Research from Which? shows that consumers who prepare a list of questions are far less likely to be overcharged or misled.

These questions act like a safety net. They reveal whether a tradesperson is genuine, skilled and professional.

You would not hand over your car keys to the first mechanic you meet on the street. The same logic applies to your home.

Remember, the cheapest quote is rarely the best value. A reliable tradesperson will welcome your questions and answer them clearly.

The 10 Essential Questions

1. Are You Licensed and Registered?

Many trades require specific qualifications. For example, an electrician should be NICEIC registered. Gas engineers must be on the Gas Safe Register.

Ask to see their licence or registration number. You can verify it online through official bodies. The Gas Safe Register website is a good place to start for gas work.

Using an unregistered tradesperson can invalidate your home insurance and put your family at risk.

2. Do You Have Public Liability Insurance?

Accidents happen on building sites. Public liability insurance covers you if your property is damaged or someone gets hurt.

Never hire someone without it. The minimum cover should be at least £1 million. Ask to see the certificate.

All good tradespeople, like the roofing contractors you find on TrustValet, will have this insurance in place.

3. Can I See Examples of Your Recent Work?

A confident professional will be proud to show off their last few jobs. Ask for photos or, better still, addresses where you can drive by and take a look.

If they specialise in kitchens, they should have plenty of kitchen photos. Check that the style matches what you want.

Be suspicious if they come up with excuses. A genuine expert has nothing to hide.

4. Can You Provide References From Past Clients?

Speaking to a previous customer is incredibly valuable. Ask for two or three recent references and actually call them.

Ask the references if they were happy with the work, if the tradesperson turned up on time and if the final bill matched the quote.

We explain how to spot fake reviews in our guide on how to read online reviews.

5. What Are the Payment Terms?

Never pay the full amount upfront. A reasonable deposit might be 10–25% for larger jobs like a bathroom remodel. For smaller jobs, you may pay on completion.

Agree a clear payment schedule. For example, a set amount after the first fix, then after plastering, then the balance on sign-off.

Be very wary of anyone who demands cash only or pushes for a big deposit before materials arrive.

6. Do You Offer a Written Guarantee?

Most trades come with a standard warranty on workmanship. Skilled pros stand by their work for at least a year.

Materials like a new boiler or windows may have a manufacturer’s guarantee too. Ask how long each part is covered and what happens if something fails.

Get all guarantees in writing. A verbal promise is not much good six months later.

7. How Long Will the Job Take?

Knowing the timeline helps you plan your life around the mess. A bathroom might take two weeks; a full rewiring less than a week.

Ask about start and finish dates. Also ask what happens if there are delays because of weather or supply problems.

A clear schedule with milestones shows the tradesperson is organised and respects your time.

8. Who Will Be on Site Every Day?

Will it be the person you spoke to, or will they send subcontractors? You have a right to know who is in your home.

If subcontractors are used, ask about their experience and insurance too. The main contractor remains responsible for their work.

For larger projects, a home remodeling contractor will often manage several teams. Make sure one person is your point of contact.

9. Do You Handle Building Regulations and Permits?

Many home improvements need approval from the local council. These include structural changes, new windows or electrical work.

A professional tradesperson will know the rules and sort the paperwork. If they suggest skipping this step to save money, walk away.

Illegal work can cause huge problems when you later try to sell your house.

10. How Do You Protect the Rest of My Home?

Construction is dusty and messy. Ask what they will do to keep your carpets clean and your belongings safe.

Good tradespeople use dust sheets, plastic barriers and shoe covers. They should tidy up at the end of each day.

If they shrug off this question, expect a big clean-up bill or damaged furniture.

Red Flags to Watch For

Even with the right questions, some warning signs should make you stop immediately. These include a tradesperson who refuses to give a written quote.

Another red flag is high-pressure sales talk. A genuine expert does not need to push you into a quick decision. Trust your gut.

Beware of anyone who wants a huge deposit before any work begins. It often means they have cash-flow problems or worse intentions.

Finally, if they cannot show proof of insurance or registration, do not hire them. Read the Citizens Advice checklist for more tips on spotting rogue traders.

Your Next Steps

Once you have asked these questions and are happy with the answers, get everything in writing. A simple contract prevents arguments later.

Then, take a moment to explore our full collection of guides for more advice on hiring well. You might also like our 7 questions to ask before you hire for extra detail.

When you are ready to find a reliable local pro, visit our Home Improvement hub. Every listed business has been vetted so you can hire with confidence.