How to Choose a Builder in Surrey: What to Check Before You Hire
Choosing the right builder is the single most important decision in any home improvement project. A good builder delivers on time, on budget, and to a standard that adds real value to your home. A poor one causes delays, disputes, and work that has to be redone at your expense.
Surrey homeowners are well-placed to do thorough due diligence because there are plenty of quality builders in the area, but also plenty of less scrupulous operators who rely on the high demand in the Surrey market to stay busy. This guide tells you exactly what to check before you commit.
Step 1: Start With Recommendations, Not Search Results
The most reliable way to find a good Surrey builder is through a personal recommendation from someone whose judgement you trust and who has had similar work done. Neighbours who have recently had an extension or renovation are the best source. Ask them specifically:
- Did the builder finish on time?
- Did the final cost match the quote?
- How did they handle problems when they arose?
- Would they use the same builder again?
Online reviews on Google, Checkatrade, or Trustpilot are useful but should be treated as supplementary to direct recommendations rather than a substitute for them. A builder with 200 Google reviews can still be poor at managing complex projects, and a builder with few online reviews can be excellent.
Step 2: Check Accreditations and Insurance
Before you meet a builder for a quote, check two things: their accreditations and their insurance.
Accreditations to look for
| Accreditation | What It Means |
| Federation of Master Builders (FMB) | Members are vetted and must pass quality and financial checks. One of the most recognised builder accreditations in the UK. |
| NHBC registration | Relevant for new build work. Provides structural warranty. |
| TrustMark | Government-endorsed scheme for tradespeople. Members are vetted for technical competence and trading standards compliance. |
| Which? Trusted Trader | Assessed by Which? and backed by a consumer protection scheme. |
| Checkatrade approved | Background-checked and reviewed. A reasonable indicator but less rigorous than FMB or TrustMark. |
Insurance to confirm
- Public liability insurance: covers damage to your property or injury to a third party during the build. A minimum of £2 million cover is standard. Ask to see the certificate.
- Employers liability insurance: required by law if the builder employs staff. Covers workers injured on your site.
- Professional indemnity insurance: relevant if the builder is providing design as well as construction services.
Do not take a builder’s word for it. Ask to see the actual certificates and check the expiry dates. Reputable builders will provide these without hesitation.
Step 3: Get Three Quotes — But Compare Them Carefully
Getting multiple quotes is standard practice. Two to three quotes for a significant project is sensible. More than three rarely adds useful information and wastes everyone’s time.
The most important thing about comparing quotes is to make sure they cover the same scope. A quote that is 20% cheaper than the others has almost certainly left something out. Common omissions include:
- Structural engineer fees
- Planning application fees
- Building regulations fees
- Demolition and skip costs
- Decoration and finishing after plastering
- VAT (some builders quote ex-VAT, others include it)
Ask each builder to provide an itemised quote that lists what is and is not included. This makes genuine comparison possible and reveals what each contractor has allowed for.
| Beware of low quotes
In the Surrey construction market, a significantly low quote is almost always a warning sign rather than a bargain. It typically means the builder has underpriced to win the job and intends to make up the margin through variations and extras once work has started. Grand Innovations provides fixed-price quotes with a full scope of works so you know exactly what is and is not included. |
Step 4: Ask to See Completed Projects
Any reputable Surrey builder should be able to show you completed projects of similar scope to yours. Ideally, visit a completed project in person rather than just looking at photographs. This allows you to assess the quality of the finish, the standard of workmanship, and whether the completed space matches what was promised.
When you visit, look specifically at:
- The quality of plastering: walls should be flat and straight with clean corners
- The quality of joinery: doors should hang correctly, gaps should be even and consistent
- The standard of tiling: grout lines should be even and consistent, tiles should be flat
- The overall cleanliness and tidiness of the completed work
If the builder is unwilling to show you a completed project, treat that as a significant warning sign.
Step 5: Understand the Contract Before You Sign
A proper written contract protects both you and the builder. It should cover:
- Detailed scope of works: exactly what is and is not included
- Fixed price or agreed pricing mechanism
- Payment schedule tied to milestones rather than time periods
- Programme of works with a start date and expected completion date
- What happens if the project overruns or if additional work is required
- Dispute resolution process
- Retention: a percentage held back until after practical completion to cover snagging
Be cautious of builders who ask for large upfront deposits before work begins. A reputable builder with a sound business does not need a significant deposit to fund the project. Grand Innovations requires no large deposits and structures payments against milestones.
Step 6: Check How They Communicate
The practical experience of working with a builder depends heavily on how they communicate. During the quote process, assess:
- Do they respond promptly to calls and messages?
- Do they show up when they say they will?
- Do they explain things clearly without jargon?
- Do they ask good questions about your requirements?
A builder who is slow to respond, vague about details, or dismissive of your questions during the quote process is unlikely to communicate better once they have your deposit and are on site.
Red Flags to Watch For
| Red Flag | Why It Matters |
| Asks for a large cash deposit before starting | May indicate cash flow problems or intent to disappear with the money |
| Unwilling to provide a written contract | Leaves you with no legal protection if things go wrong |
| Cannot provide insurance certificates | Leaves you liable for accidents or damage on your property |
| Quote is significantly below all others | Almost certainly means something has been left out or quality will be compromised |
| Pressures you to decide immediately | Reputable builders do not need to use high-pressure tactics |
| Cannot show you completed work | Raises serious questions about their experience and track record |
| No fixed address or company registration | Makes it very difficult to pursue a claim if things go wrong |
Frequently Asked Questions
How do I find a reputable builder in Surrey?
Personal recommendations from neighbours or friends who have had similar work done are the most reliable starting point. Supplement these with checks on FMB membership, TrustMark accreditation, Google reviews, and insurance certificates. Always ask to see completed projects before committing.
How many quotes should I get for a building project in Surrey?
Two to three quotes is sufficient for most projects. More than three rarely adds useful information and takes up significant time from both you and the builders. The key is to make sure all quotes cover exactly the same scope so you are comparing like with like.
Should I always choose the cheapest builder?
No. In the Surrey construction market, the cheapest quote almost always has something missing from the scope, or the builder intends to use lower-quality materials or subcontractors. Choose based on a combination of price, track record, communication, and the specifics of what is included in the quote.
How much deposit should I pay a builder?
A deposit of 10% to 20% at contract sign-off is reasonable for most projects. Anything above 25% before work starts should be treated with caution. A reputable builder with a sound business does not need a large deposit to fund materials before starting. Avoid paying in cash and always get a receipt.
What should a building contract include?
A proper building contract should include a detailed scope of works, fixed or agreed pricing, a payment schedule tied to milestones, a programme with start and end dates, a variation procedure, a dispute resolution process, and a retention clause. If a builder is unwilling to sign a written contract, do not proceed.
Why Surrey Homeowners Choose Grand Innovations
Grand Innovations is fully insured, accredited, and transparent about pricing. We provide free consultations, itemised proposals within 24 hours, fixed-price contracts, and no large deposits. Every project is managed by our team from first meeting to final handover.
We cover Surrey, Epsom, Putney, and all surrounding areas.
Start the conversation today and find out why Surrey homeowners trust Grand Innovations with their most important home projects.
