What Affects the Cost of a Campervan Conversion? 12 Factors That Move the Price

Why Quotes Vary So Much

Get three quotes for what sounds like the same campervan and they can differ by £10,000 or more. That's not (usually) one converter overcharging — it's because the headline "a campervan conversion" hides a dozen decisions, each of which moves the price. Understand these factors and you can read a quote properly, compare like with like, and decide where to spend and where to save.

Throughout, remember the costs below are for the conversion only. The base vehicle is separate — though, as you'll see, which van you choose is itself one of the biggest cost factors.

1. The Base Vehicle

The van you start with affects the price twice. First, it's a separate purchase: a used VW T6 (£22,000–£35,000) costs far more than a used Ducato (£15,000–£26,000). Second, a bigger van costs more to convert because there's more to insulate, line, heat and furnish. Choosing the platform is the single most consequential budgeting decision you make.

2. Labour — the Biggest Single Line

Labour typically accounts for 60–70% of a professional conversion's cost. A skilled converter's time is the largest expense, which is why quotes for similar specs vary so much between builders. Workshops with higher overheads, more experienced teams, or longer waiting lists generally charge more — and often justify it with finish quality. When you compare quotes, you're largely comparing how each builder prices their time.

3. Bespoke vs Template Build

A converter who builds the same proven layout repeatedly works far more efficiently than one designing a one-off around your exact requirements. A template or semi-custom build is cheaper because the design work is already done and the cuts are known. A fully bespoke layout — designed-for-you joinery, an unusual floor plan, custom dimensions — costs more in both design and build time. Neither is better; bespoke is personal, template is efficient.

4. The Electrical System

This is the factor with the widest range and the one that most separates a budget build from a premium one. The spectrum runs from:

Going from AGM to lithium alone adds roughly £1,500–£2,500 for a 200Ah bank. The electrical spec is where "the same van" diverges most in price.

5. The Roof

Standard panel vans have around 1.3–1.4m of internal height — fine for sitting, not for standing. Your roof choice is a major cost line:

A VW T6 has no factory high-roof option, so a roof upgrade is effectively mandatory and built into most T6 quotes.

6. Heating

A van you intend to use beyond high summer needs heating. The main options sit at a similar price but differ in fuel and function:

No heating keeps the price down but limits the van to fair-weather use.

7. The Bathroom

A bathroom is one of the clearest cost dividers because it needs space, plumbing and tanking:

Because a bathroom needs length, it's largely a large-van feature — another way van size and cost are linked.

8. The Kitchen

Kitchens range from a single-burner hob and a sink to a full galley with an oven, a grill, a 12V compressor fridge or fridge-freezer, and plumbed hot water. Typical spend runs £1,000–£3,000+, driven mostly by the fridge (a compressor fridge costs far more than a cool box) and whether you add an oven and hot water.

9. Furniture, Joinery and Upholstery

The materials and craftsmanship of the cabinetry and soft furnishings can swing the price by thousands. Standard ply units with off-the-shelf fabric sit at the budget end; bespoke hardwood or composite cabinetry with premium upholstery and a crash-tested rock-and-roll bed (£1,500–£3,000 in itself) sit at the top. This is where "finish quality" in a premium quote largely lives.

10. Water System

A simple build might have a single fresh tank and a foot pump. A capable touring van has larger fresh and grey tanks, an electric pump, a water heater, and sometimes filtration. More capacity and hot water mean more cost — modest individually, but they add up.

11. Certification, Gas and Compliance

Two compliance costs commonly appear:

DVLA reclassification to "Motor Caravan" is itself free, but worth factoring into your plans.

12. Lead Time, Deposit and Timing

Timing affects cost in subtle ways. Popular converters have 3–12 month waiting lists, and if you need a van in the meantime, hire can run £50–£100 a day. Most builders want a 20–50% deposit to secure a slot, so a £40,000 build means finding £8,000–£20,000 up front. Booking 6–9 months ahead can also secure better pricing as converters plan their schedules. None of these change the build cost directly, but they shape your real, all-in outlay.

How to Use This When Comparing Quotes

When you've got several quotes, don't compare the headline numbers — compare the *decisions* behind them. Build a like-for-like table covering: base vehicle (included or not), insulation spec, electrical system (battery type, solar wattage, inverter), heating type, roof type, bathroom, appliances by make and model, warranty and lead time. Two quotes at the same price can represent very different vans, and a £10,000 difference often disappears once you align the specs.

To turn these factors into a number for your own build, use our conversion cost calculator: pick your van size, spec tier and add-ons, and see an indicative range — then compare it against real converter pricing and request quotes from builders in your budget.