Back to guides
Buying Guide

The Complete Guide to Choosing a Campervan Converter

How to find, evaluate, and select the right converter for your needs. Includes our 15-point checklist and the red flags that should make you walk away.

20 January 202615 min read

Why This Decision Matters

Commissioning a campervan conversion is likely one of the largest purchases you'll make outside of a house. You're not buying an off-the-shelf product — you're paying someone to build something for you, often months in advance, with a significant deposit. Getting this decision right protects your money, your safety (particularly for gas and electrical systems), and your satisfaction with the finished vehicle.

The UK conversion market is largely unregulated. Anyone can set up as a converter with minimal barriers. That means the quality spectrum is enormous — from excellent craftspeople producing beautiful, safe builds, to inexperienced operators who cut corners on insulation, electrics, or gas installation. This guide helps you tell the difference.

The 15-Point Checklist

Work through each of these before placing a deposit with any converter.

  • Verify Gas Safe registration – Any gas work (hob, heater, water heater) must be carried out by a Gas Safe registered engineer holding the specific LPG Caravans & Motorhomes qualification. Check at gassaferegister.co.uk using their registration number. A legitimate converter will know their number immediately.
  • Ask who does the gas and electrical work – Is it done in-house by qualified engineers, or subcontracted? Either can be fine, but you need to know who is responsible and that they are properly qualified.
  • Check the NCC Approved Workshops scheme – The National Caravan Council runs an independent inspection scheme for converters. NCC-approved workshops have been assessed for quality and compliance. Not all good converters are NCC-approved, but approval is a meaningful signal.
  • Ask to see completed builds — in person – Photos on a website are easy to polish. Ask to visit the workshop and see a recently completed conversion. Walk around it, open the cupboards, look at the wiring runs, check the seams on the joinery.
  • Check Companies House – Search the converter's company name at companieshouse.gov.uk. How long have they been trading? A company registered last month should raise questions. Look for any history of dissolved or struck-off companies under the same directors.
  • Read Google reviews, not just their testimonials – The testimonials page on a converter's website is curated. Google reviews are harder to manipulate. Look at the volume of reviews, the recency, and critically, how the converter responds to any negative reviews.
  • Get a detailed written quote – The quote should itemise what is and is not included: the base vehicle (or not), insulation spec, electrical system size, appliances by make and model, furniture materials, roof type, warranty terms. Vague quotes lead to disputes.
  • Clarify the warranty in writing – What is covered? For how long? What voids the warranty? Who pays for parts versus labour on warranty claims? Warranties vary enormously between converters.
  • Ask for a contract with staged payments – A legitimate converter will work with a payment schedule: typically 10–20% deposit, staged payments at key build milestones, and a balance on completion. Be very wary of any converter asking for 50%+ upfront before work begins.
  • Visit the workshop during a build – Ask if you can visit mid-build. A confident converter will welcome this. It lets you see how the insulation is fitted, how electrical runs are managed, and the general working standards.
  • Ask for customer references – Ask for contact details of two or three previous customers. A converter with satisfied clients will provide these without hesitation. Actually contact them.
  • Confirm the lead time in writing – Lead times of 6–12 months for quality work are normal. Get the expected start date, build duration, and target completion date written into your contract.
  • Check public liability insurance – A legitimate converter should carry public liability insurance, ideally at least £2 million. Ask to see the certificate.
  • Understand what the deposit does – What does your deposit secure? Is it held separately? What happens if the converter goes under before completing your build? Some converters use client funds to buy materials for other jobs — this is a risk.
  • Confirm after-sales support – Who do you contact if something goes wrong in the first year? Is there a dedicated point of contact, or do you just call the general number? How quickly do they respond to warranty issues?

    • Red Flags to Watch For

    These are the warning signs that should make you pause and reconsider:

  • **No Gas Safe registration** for gas work, or evasiveness when asked about it
  • **Wants full payment upfront** before work begins — this is a significant financial risk
  • **No written quote or contract** — verbal agreements offer no protection
  • **Cannot show you any finished builds in person** — photos only, or renders
  • **Very short lead times** — offering completion in 4–6 weeks when others quote 6+ months suggests either a very small build or corners being cut
  • **No fixed business address** — converting vans without a proper premises is possible but unusual for a serious operation
  • **Pressure to decide quickly** — "we have a slot next month that will be gone if you don't book today"
  • **Unusually low quotes** — if a quote is 30–40% below everyone else's, ask hard questions about what's been omitted

    • How to Compare Quotes

    When you have three or more quotes, don't just compare the headline number. Build a comparison table that looks at:

  • What base vehicle is included (or are you supplying it?)
  • Insulation type and specification
  • Electrical system: battery size, panel wattage, charge controller type
  • Battery type: AGM or lithium?
  • Appliances: specific makes and models
  • Warranty: duration and scope
  • Lead time
  • Payment schedule

    • Two quotes at the same price can represent very different builds. The detail is everything.

    The Importance of Gut Feel

    After you've done all the verification above, trust your instincts. Does the converter communicate clearly and promptly? Do they answer your questions directly? Do they seem genuinely enthusiastic about your project? You'll be in a working relationship with this person or company for 6–12 months. That relationship matters.

    Ready to find your converter?

    Browse The Camper Directory's directory of trusted UK campervan converters.