You've found a tradesperson.
They've visited the property, discussed the work and sent you a quotation you're happy with.
Then they ask for a deposit.
For many homeowners, that's the moment uncertainty creeps in.
Is paying upfront normal?
How much should I pay?
What if they disappear with the money?
Shouldn't I wait until the work is finished?
There isn't one rule that applies to every trade or every project.
A tradesperson asking for a deposit isn't automatically suspicious. There are perfectly legitimate reasons a business may require money before work begins.
At the same time, sending a substantial amount of money to somebody you've barely checked isn't something to do casually.
The important thing is understanding why the payment is being requested and what you're agreeing to.
Why Do Tradespeople Ask for Deposits?
Imagine a contractor is about to begin a project requiring thousands of pounds of materials.
Those materials might need to be purchased before anyone arrives at your property.
Some may even be made specifically for your project.
Without a deposit, the business could effectively be financing part of the customer's project from its own cash.
Multiply that across several jobs and the sums can become significant.
A deposit may therefore help cover things such as:
  •  Materials 
  •  Bespoke or made-to-order products 
  •  Supplier commitments 
  •  Initial project costs 
  •  Securing a booking in the diary 
The exact reason depends on the job.
A small repair requiring almost no materials may be handled very differently from a kitchen installation, roofing project or extension.
Is There a Normal Deposit Percentage?
This is where homeowners should be careful with simple internet rules.
You may see statements such as:
“Never pay more than 10%.”
or:
“30% is completely normal.”
Real projects aren't always that simple.
The appropriate payment structure can depend on the value of the work, the amount and timing of material expenditure, whether products are bespoke, the duration of the project and the terms agreed with the contractor.
Instead of focusing exclusively on a percentage, ask:
What is this payment actually covering?
A £2,000 deposit on a £10,000 project tells you something.
Knowing that £1,800 of materials must be ordered before the start date tells you considerably more.
Ask What the Deposit Is For
There's nothing unreasonable about asking.
A professional contractor should be able to explain their payment structure.
For example:
“We take a deposit when the booking is confirmed because the windows are manufactured specifically for the property.”
Or:
“The first payment covers the materials we'll need to order before work begins.”
That's very different from:
“Send me £4,000 tonight and I'll get you booked in.”
The amount isn't the only thing that matters.
The context matters too.
Get the Agreement in Writing
Before sending significant sums of money, make sure you understand the agreement.
Depending on the project, useful information can include:
  •  The contractor or business carrying out the work 
  •  The agreed scope 
  •  Total price 
  •  Deposit amount 
  •  What the deposit relates to 
  •  Payment stages 
  •  Expected start date or timescale 
  •  How variations will be handled 
  •  Relevant cancellation terms 
  •  Any applicable guarantees or warranties 
A proper written quotation or contract gives both sides something to refer back to.
Memory becomes surprisingly unreliable once a project has been running for several weeks.
Check Who You're Paying
If you've hired Example Building Ltd, but you're suddenly asked to send a large deposit to an unrelated account name, it's reasonable to ask why.
There can sometimes be legitimate explanations for differences in trading names and account names.
But don't simply assume.
Verify the payment details with the business using contact information you trust.
This is particularly important if bank details unexpectedly change.
Email accounts can be compromised, and payment-redirection fraud can involve criminals impersonating legitimate businesses.
If you receive a message saying:
“We've changed banks — please send the £8,000 balance to this new account.”
verify that instruction independently before paying.
Research the Business Before Sending Money
Ideally, this happens before you've accepted the quotation.
Look beyond one piece of information.
Depending on the business, you might check:
Its professional profile.
Previous work.
Customer reviews.
Trading history.
Contact information.
Relevant qualifications or registrations where appropriate.
Company details if it operates through a limited company.
No single check guarantees that a project will go perfectly.
The aim is to build a more complete picture of who you're dealing with.
Don't Confuse a Deposit With Full Payment Upfront
A deposit and paying for the entire project before anything has happened are very different propositions.
For substantial work, staged payments may be used as the project progresses.
For example, payments might be linked to agreed stages of work or expenditure.
The exact structure varies considerably between projects.
What matters is that you understand:
How much is due?
When is it due?
What should have happened by that point?
You shouldn't discover the payment schedule halfway through the job.
Be Careful With Large Cash Payments
Some customers prefer cash.
Some legitimate tradespeople accept it.
Cash itself doesn't prove anything improper.
But for significant payments, think about the record you're creating.
Whatever payment method is used, obtain appropriate documentation showing what was paid and what the payment relates to.
If thousands of pounds change hands and the only record is:
“I gave it to him on Tuesday.”
resolving a later disagreement becomes considerably harder.
A Receipt Matters
If you've paid a deposit, keep evidence of it.
That might include a receipt, invoice, bank transaction and the written agreement associated with the payment.
Ideally, you should be able to establish:
Who received the money.
How much you paid.
When you paid it.
Which project it relates to.
And what the payment was for.
Keep those records together with the quotation and other important project communications.
What About Materials?
Homeowners sometimes assume:
“I'll just buy all the materials myself so I don't need to pay anything upfront.”
That can work for some projects.
But it isn't automatically better.
The contractor may have preferred suppliers, trade arrangements or specific product requirements.
Ordering the wrong quantity, specification or compatibility can create delays and disagreements over responsibility.
If you want to purchase materials directly, discuss it before placing orders.
Establish exactly who is responsible for selecting, measuring, ordering, checking and returning them.
Saving money isn't helpful if the wrong products arrive on the morning installation is supposed to begin.
Bespoke Products Change the Risk
Custom-made items deserve particular attention.
Windows manufactured to specific dimensions.
Bespoke joinery.
Made-to-measure doors.
Custom cabinetry.
Special-order materials.
These may be difficult or impossible for the contractor to use on another customer's project if you cancel.
That can help explain why a larger commitment may be required before production begins.
Again, the important thing is understanding the terms before paying.
Watch for Pressure
There is a difference between a genuine deadline and pressure designed to stop you thinking.
A genuine situation might be:
“Our supplier's quotation is valid until Friday, so if you'd like us to order at that price we'd need confirmation before then.”
A concerning situation might look more like:
“Transfer the deposit in the next hour or the price doubles.”
Urgency should have an understandable reason.
Don't allow yourself to be rushed into sending money before you've had an opportunity to check what you're agreeing to.
Be Wary If Important Details Keep Changing
Suppose the quotation says one thing.
The conversation says another.
Then the payment request introduces something completely different.
The business name changes.
The price changes.
The scope changes.
The bank details change.
The start date becomes unclear.
One change doesn't automatically mean there's a problem. Projects evolve.
But repeated inconsistencies should be resolved before money is transferred, not afterwards.
Don't Automatically Treat Every Deposit as a Red Flag
The opposite mistake is assuming:
“A trustworthy tradesperson would never ask for money upfront.”
That isn't necessarily true.
A legitimate business may have substantial costs before work starts.
Expecting a small contractor to purchase thousands of pounds of project-specific materials entirely from their own cash can place significant pressure on the business.
A sensible payment arrangement should protect both parties.
The customer shouldn't take unnecessary financial risk.
But the contractor shouldn't necessarily be expected to finance the customer's entire project either.
What If You're Not Comfortable?
Ask questions.
You could say:
“Before I send the deposit, could you confirm what it covers and send me the payment schedule for the rest of the project?”
A reasonable question shouldn't create a problem.
If you're still uncomfortable, don't allow the desire to secure a start date to override that concern.
Take some time.
Check the business.
Read the paperwork.
Clarify anything you don't understand.
For larger projects, consider obtaining appropriate professional or legal advice if the contract or payment arrangements are significant or complex.
What If Something Goes Wrong After You've Paid?
Your options will depend on the circumstances, the agreement, how payment was made and what has actually happened.
A delayed start is different from a contractor ceasing communication entirely.
A disagreement about scope is different from suspected fraud.
Keep all relevant evidence:
Quotations.
Contracts.
Invoices.
Receipts.
Messages.
Emails.
Payment records.
Photographs.
If a dispute develops, organisations such as Citizens Advice can provide consumer guidance, while suspected fraud can be reported through the appropriate official channels.
Good Payment Arrangements Create Clarity
Deposits don't need to be frightening.
And they shouldn't be mysterious.
A good arrangement leaves both sides understanding:
What is being paid.
Why it is being paid.
What happens next.
What remains outstanding.
That clarity benefits the tradesperson as much as the homeowner.
Because disputes often don't begin with bad intentions.
They begin with two people having different understandings of the same agreement.
Before You Transfer the Money
Don't judge a deposit request purely by whether one exists.
Look at the whole picture.
Do you know who you're dealing with?
Do you have the scope and price in writing?
Do you understand why the deposit is required?
Is the payment going where you expect?
Do you know what happens after you've paid?
And are you comfortable with the agreement?
If the answers are clear, a deposit can simply be a normal part of getting a project underway.
If they're not, ask questions before pressing send.
The safest payment isn't necessarily the smallest deposit — it's the one you understand, can document and have agreed with a business you've taken reasonable steps to check.