Sole Trader or Limited Company Builder: What Changes for You
Who your contract is with, what you can check, and why neither kind of business is automatically the safer choice.
The short version
The business structure changes who you are contracting with. It doesn't, on its own, tell you how good the builder is.
A sole trader is an individual running a business in their own name, or under a trading name. If you hire one, your contract is with that person. A limited company is a separate legal entity registered at Companies House. If you hire one, your contract is with the company, not with the people who run it.
Neither is automatically safer. A long-established sole trader with good references can be a better choice than a limited company formed last month. What changes is what you can check, whose name should appear on the paperwork, and who is responsible if something needs putting right later.
This guide explains the practical differences for a homeowner, what to check for each kind of business, and the questions worth asking whichever you choose.
Side by side
The two structures at a glance
Partnerships and limited liability partnerships (LLPs) also exist. They sit between the two and are less common for domestic building work.
Sole trader
- The person and the business are the same
- Can trade under their own name or a business name
- Registered with HMRC, not listed at Companies House
- Your contract is with the individual
- No public accounts or filing history to look up
- Usually a small operation, often with their own hands on the job
Limited company
- A separate legal entity from its owners
- Name ends in Limited or Ltd
- Registered at Companies House with a company number
- Your contract is with the company
- Directors, filing history and accounts are public
- Can range from one person to a large firm
Sole traders
Hiring a sole trader: what it means
A sole trader is self-employed and runs the business personally. There is no separate legal entity: the business's contracts, debts and obligations are the individual's own. They register with HMRC for tax, but they don't appear on the Companies House register, so there is no public record of the business to look up in the same way.
Many sole traders use a trading name, such as 'Smith Roofing', rather than their own name. That is perfectly normal. What you want on your quote and paperwork is the person's full name as well as the trading name, and a business address where they can be contacted. Our answer on whether a builder should have a business address explains why that matters.
Because the contract is with an individual, any claim about the work is against that person. That can be straightforward while they are trading. If they retire, move away or stop working, it can become harder to pursue.
The main practical difference for you is that there is less public information to check. You lean more on references, reviews, seeing previous work and seeing their insurance. Our answer on whether a sole trader builder is riskier gives the short verdict.
Limited companies
Hiring a limited company: what it means
A limited company is registered at Companies House, has a company number and a registered office address, and must file information such as annual accounts and a confirmation statement. Much of that is public and free to search on the Companies House service on GOV.UK.
The company is legally separate from the people who own and run it. That is what 'limited' refers to: the owners' liability for the company's debts is generally limited. For you, it means your contract, and any claim about the work, is with the company. If the company stops trading or is dissolved, you generally can't pursue the directors personally simply because they ran it.
The benefit is transparency. You can see when the company was formed, whether it is active, who the directors are, whether its filings are up to date, and whether there are notices such as a proposal to strike it off. Our guide to checking a company on Companies House walks through how to read the record.
The thing to watch is the name. Check that the exact company name on your quote, including 'Limited' or 'Ltd', matches a company on the register, and that the company number, if given, belongs to that company. A trading name on a van may differ from the registered name, and your contract should be with the registered company.
This is general information, not legal advice. If you need to understand your position with a particular business, Citizens Advice or a solicitor can help.
What to check
Six checks, whichever structure they use
The exact name on the paperwork
For a sole trader, their full name as well as any trading name. For a company, its registered name, company number and registered office.
Insurance in the right name
Public liability insurance should be in the name of the person or company you are contracting with. Checking a builder's insurance explains how.
The public record, for a company
Status, date formed, directors and filing history on Companies House. Our answer on checking a builder on Companies House is the quick version.
References and previous work
Especially important for sole traders, where there is less public information. Speak to past customers and look at finished jobs.
VAT details, if they charge VAT
A VAT-registered business should show its VAT number on the quote and invoice. You can check a VAT number using the GOV.UK service.
Who gives the warranty
The warranty should be in the name of the business you contract with, with its terms in writing. Ask how long it lasts and when it starts.
On the paperwork
What the paperwork should show you
The quote, invoice and any contract should make it obvious who you are dealing with. There are rules about what businesses must show, and they give you a simple test.
A limited company should show its full registered name on its business documents and website, along with its company number and registered office address. If a quote from a business calling itself Ltd shows none of these, ask for them and check them against the register.
A sole trader using a business name should also give their own name and a business address on documents such as letters, invoices and written orders. A quote that gives only a trading name and a mobile number leaves you unsure who you would be contracting with.
Whichever structure is involved, the business you contract with is the one responsible for the work, including any other trades it brings in. Our guide to what a main contractor is responsible for explains what that covers, and how to know a builder is legitimate brings the identity checks together. If the details on the paperwork don't add up, red flags when hiring a builder helps you decide how much weight to give it.
This is general information, not legal advice. Companies House and GOV.UK publish guidance on what businesses must display.
The honest comparison
Why neither is automatically the safer choice
It is tempting to assume a limited company is more established. Sometimes it is. But forming a company is quick and inexpensive, so 'Ltd' on its own says little about how long a business has been operating or how well. A company formed recently, with directors linked to several earlier companies that closed, tells a different story from one that has filed on time for many years.
Equally, many of the best tradespeople are sole traders who have built their reputation over decades. They are often on the job themselves, which means the person who priced your work is the person doing it.
The real questions are the same for both. How long have they been doing this work? Can they show you jobs like yours? Is their insurance current and in the right name? Do past customers speak well of them? Our guide to vetting a builder works through those checks in order, and our guide to choosing and checking a building contractor sets them in the wider picture.
A workmanship warranty is a promise from the business that did the work, so its value depends on that business still being around to honour it. That is true of sole traders and limited companies alike. Some businesses offer an insurance-backed guarantee, which is designed to keep cover in place if the business stops trading. If one is offered, ask for the policy details in writing and check what it covers. This is general information, not legal advice.
In practice
Five questions to settle before you sign
Who exactly am I contracting with?
A named individual or a named company. It should be written on the quote and on any contract.
Does that name match the records?
The Companies House register for a company. The insurance certificate and any scheme registration for either.
Who will do the work?
The person you met, their own team, or other trades they bring in. Ask, and note the answer.
Who gives the warranty, and for how long?
In writing, in the name of the business you are contracting with, with a start date.
Where can I reach them afterwards?
A business address and contact details that will still work once the job is finished and the van has gone.
If you use Mortaro
Your contractor is named, so you can check them
Mortaro coordinates domestic building projects. We appoint a contractor from our network, arrange the site visit, prepare your written quotation, handle the communication and administer the payments. The work itself is carried out by an independent main contractor, and your construction contract is with them.
Your quotation names that contractor before you commit to anything, so you know exactly which business you are contracting with and can look them up yourself. They hold the insurance and provide the workmanship warranty, a minimum of 12 months across our network, often longer on larger works, and usually running from completion. Who you're dealing with explains how the parties fit together.
If something needs putting right, you tell us and we escalate it with your contractor. Putting things right explains how that works and where the warranty sits.
Straight answers
Questions about business structure
Is a limited company builder safer than a sole trader?
Not automatically. A limited company has a public record you can check, which helps. But a well-established sole trader with good references can be the better choice. Judge the builder on their record, insurance and references, not the structure alone.
How do I know if a builder is a sole trader or a limited company?
Ask. A limited company's name ends in Limited or Ltd and it will be on the Companies House register. A sole trader won't be, though they may use a trading name. Their quote should make clear who you are contracting with.
Can I take action against a limited company's director personally?
Generally your contract, and any claim, is with the company rather than its directors. There are limited exceptions, which depend on the circumstances. For advice on a specific situation, speak to Citizens Advice or a solicitor. This is general information, not legal advice.
Does it matter if the name on the van is different from the quote?
It can be normal: a company may trade under a different name. What matters is that your quote and contract name the actual business you are dealing with, and that its insurance is in that name.
Start here
Tell us about the work you have in mind
We will confirm we cover your postcode, arrange a site visit with a contractor from our network and send you a written quotation. No charge, no obligation.