If you’re planning a project—be it a major extension or a smaller bespoke joinery job—the single biggest source of anxiety for homeowners is choosing the right builder. It’s a huge investment of time, money and trust.
Over the 16 years we have operated in County Durham we have seen and heard of customers make common mistakes that cost them dearly down the line. It’s definitely not about finding the cheapest quote; it’s about finding a reliable professional whose experience matches your project’s needs.
Here are the most crucial questions you must ask any builder before engaging their services. This advice comes directly from our experience and that of professional colleagues. It is designed to protect you and your investment, regardless of whether you engage us or another reputable contractor.
1. Show Me Your Paperwork: Are You Insured and Registered?
This might sound like boring admin, but it’s the bedrock of trustworthiness. A reliable professional won’t hesitate to show you their documentation.
Public Liability Insurance: Always ask to see a current copy of their Public Liability Insurance certificate. This protects you, your property, and the public if anything goes wrong while they are working on site. No current insurance? Walk away immediately.
Company Registration: If they are a limited company, check their details online (like VAT registration and company number). This shows they are running a legitimate operation here in the UK. If they are not a limited company, perhaps a sole trader, then at the least ask for proof of trading address - a council tax bill, driving licence, electricity bill etc.
If a builder avoids this simple step, how can you trust them with the structure of your home?
2. Can I Speak to a Recent Client with a Similar Project?
Photographs are great, but a testimonial from a satisfied customer is better. With the advance of AI and the ability to produce images of absolutely anything this holds even more water nowadays. Asking to speak to a recent client moves beyond standard testimonials and validates their experience and expertise.
Why a “Similar” Project? Building a loft conversion requires different skills than building a garden wall. By asking to speak to someone who had a similar extension or restoration project, you confirm they have the relevant practical know-how.
What to Ask the Client: Ask about the process, not just the finished result. Questions like: “Was communication clear?” “Were unexpected issues handled professionally?” and “Did they stick to the planned budget and timeline?” will give you true insight into their reliability.
We pride ourselves on our client relationships and are always happy to connect prospective clients with our previous customers.
Quote or Estimate?
Get it in writing, no exceptions. Have clarity as to whether the price you see is the maximum you will pay. It is not always possible for the contractor to give a fixed price for various reasons - it may be impossible to assess the amount of work required at stage 3 until stage 1 & 2 are completed. If it is an estimate then discuss what level of contingency funds should be set aside.
The Contract.
Changing one door rarely requires more than an acceptance of the quote and a handshake. Once you are spending higher hard earned significant sums then, if not already offered, ask for two copies of a written contract. A written contract should be fair to both parties, customers need protection and contractors also need protection from the rare rogue client. Our standard contract is based upon that supplied by the Federation of Master Builders and is available to all customers at all times.
How Do You Manage Unexpected Issues and Changes?
Every renovation job encounters surprises—it’s just the nature of working with old buildings here in County Durham. The difference between a good builder and a frustrating experience is how they handle the unexpected.
The Contingency Plan: Ask about their process for dealing with discoveries (like finding rot, or requiring structural changes). Do they stop work immediately? Do they provide a detailed breakdown of the extra cost and time required before proceeding?
The Contract: Your contract shouldn’t just list the work; it should detail the process for agreeing to Variation Orders (changes to the original plan). A clear process for changes protects both you and the builder from financial disputes and delays.
Choosing a builder is a huge decision. By asking these crucial questions, you empower yourself to make an informed choice based on Trust, Experience, and a clear understanding of the Process. We welcome these questions, and we encourage you to ask them of us.
Contact Stephen:
Phone: 07789 900 050
Email: hello@cdbj.co.uk
