How Much Does a Campervan Conversion Cost?

A DIY campervan conversion can typically cost anywhere from around €3,000 to more than €30,000, excluding the cost of the base van. The final campervan conversion cost depends on the size of the vehicle, the level of equipment, electrical and heating systems, materials and, most importantly, how much of the work you do yourself.

A few thousand euros can be enough to create a practical campervan for weekend trips and summer travel. A four-season campervan with a substantial electrical system, heating, running water, a kitchen and a professionally finished interior is a very different project.

So where does the money actually go when converting a van into a campervan – and where is it worth saving?

This guide breaks down the main campervan conversion costs and explains what to consider when choosing materials for your build.

Campervan Conversion Cost at a Glance

A useful starting point for planning a DIY van conversion budget is:

Type of conversion	Estimated conversion cost*	Typical use
Basic DIY campervan	€3,000–€7,000	Weekend trips and summer use
Mid-range campervan conversion	€7,000–€15,000	Regular travelling
Well-equipped campervan	€15,000–€25,000	Longer trips
Premium / off-grid campervan	€25,000–€30,000+	Four-season and off-grid travel

These are broad estimates for the conversion itself. The purchase price of the base vehicle is not included.

It is also sensible to keep approximately 10–15% of your planned budget available for unexpected expenses.

Small purchases add up surprisingly quickly. Wiring, connectors, brackets, screws, trims, adhesives, sealants, switches and installation tools can make a noticeable difference to the final cost.

What Determines the Cost of a Campervan Conversion?

Two campervans that look almost identical from the outside can have completely different conversion costs.

Your overall budget will typically depend on:

the base van and its condition
vehicle size
sound deadening and vibration control
condensation control and thermal insulation
flooring, walls and ceiling
interior lining
electrical system and batteries
solar panels
heating
windows and roof vents
ventilation
fresh and waste water systems
kitchen equipment
bed and furniture
how much work you do yourself.

This is why it is better to start your budget with how you intend to use the campervan, rather than with a shopping list.

A two-person campervan for summer weekend trips requires a very different specification from a four-season van designed for extended European travel.

1. The Base Van Has a Major Impact on Your Budget

If you do not already own a suitable van, the vehicle itself will normally be the largest single expense in the entire project.

The purchase price depends on factors such as make and model, wheelbase, roof height, age, mileage and overall mechanical and body condition.

However, the cheapest van is not necessarily the cheapest starting point.

An inexpensive vehicle can quickly become expensive if it requires major rust repairs, bodywork or mechanical repairs before the conversion even begins.

Vehicle size also affects the cost of the conversion. A larger van generally requires more insulation, lining material, flooring and furniture and may also require more heating capacity.

Before choosing your base vehicle, consider how many people will travel and sleep in the van, whether you need standing height, whether the van will be used during winter and how much equipment you need to carry.

2. Campervan Insulation, Condensation Control and Sound Deadening

An empty panel van is essentially a large metal shell.

Metal conducts heat and cold efficiently, large body panels can resonate and moisture from warm interior air can condense against cold metal surfaces.

For this reason, campervan insulation should be considered as a complete system rather than simply adding one layer of insulation.

Different materials can perform different functions:

Sound deadening and vibration control can reduce resonance in large metal panels.

Condensation control can help manage the interface between cold metal surfaces and the interior structure.

Thermal insulation helps reduce heat transfer through the walls, ceiling and other suitable areas of the vehicle.

These are also areas where choosing materials purely on price can prove expensive later.

Once the walls, ceiling and furniture have been installed, replacing materials hidden behind the finished interior can require a substantial amount of dismantling.

Explore Expomatto car upholstery accessories, sound deadening, insulation and adhesives

Our supplier Eaglefelt specialises in insulation, sound deadening and interior lining materials for campervans and panel vans. For more detailed information about material quantities, insulation layers and example costs, see Eaglefelt’s in-depth campervan conversion guides.

Read Eaglefelt’s complete Campervan Conversion Cost Guide

3. How Much Does Campervan Interior Lining Cost?

The cost of lining a campervan depends primarily on the size of the vehicle, the surface area you want to cover and the material you choose.

Stretch automotive lining felt or carpet is widely used in campervan and panel van conversions.

It can be used to finish areas such as:

walls and ceilings
doors
pillars
wheel arches
window surrounds
plywood panels
furniture and storage units.

One of the main advantages of stretch automotive lining material is its ability to conform to curved and irregular surfaces. This makes it much easier to achieve a clean finish around the complex shapes found inside a van.

Expomatto’s Upholstery Felts and Car Carpets range includes automotive lining felts and flooring materials suitable for campervan conversions.

The range also includes Eaglefelt materials used by both professional vehicle converters and DIY van builders.

Explore automotive upholstery felts and car carpets at Expomatto

4. Remember Adhesives and Installation Supplies

The lining material itself is only part of the cost.

You also need the correct adhesive.

Temperatures inside a vehicle can vary dramatically. During winter, a van may remain below freezing for extended periods, while surfaces inside a vehicle parked in direct summer sun can become extremely hot.

For this reason, an automotive lining adhesive should be suitable for the intended application and have adequate temperature resistance.

Adhesive consumption should also be included in your material calculations. When lining the walls, ceiling, doors and other areas of a larger panel van, the amount required can be surprisingly significant.

Expomatto’s Car Upholstery Accessories range includes spray adhesives and other installation materials designed for automotive interior work.

View car upholstery adhesives and installation accessories

5. Campervan Flooring – Consider Weight as Well as Durability

The floor is one of the hardest-working surfaces in a campervan.

Sand, moisture and dirt are carried inside, while shoes, luggage and equipment create constant wear. The material should therefore be suitable for vehicle use, durable and easy to maintain.

Weight is another important consideration.

Every component added to a campervan – flooring, furniture, batteries, water tanks, insulation and equipment – contributes to the vehicle’s total weight.

A heavier material is not automatically a better material.

Expomatto’s automotive range includes various carpet and flooring materials suitable for vehicle interiors and campervan conversions.

See Expomatto automotive carpets and flooring materials

6. The Electrical System Can Be One of the Biggest Expenses

The electrical system is one of the largest variables in a campervan conversion budget.

A simple system may only need to power LED lighting, phones, a small refrigerator and a water pump.

A more advanced off-grid electrical system may include:

lithium leisure batteries
DC-DC charging
solar panels
an MPPT solar controller
mains charging
a powerful inverter
230V outlets
a compressor refrigerator
roof ventilation
laptop and USB-C charging.

The longer you want to travel without connecting to mains electricity, the larger the electrical system generally becomes.

However, bigger is not automatically better.

Larger batteries, inverters and solar systems cost more and add weight. Calculating your realistic daily energy consumption before buying components can save a considerable amount of money.

7. Heating and Ventilation Determine Your Travelling Season

For campervans used in Northern Europe, heating, insulation and ventilation should be designed as one complete system.

A summer-only campervan has very different requirements from a van intended for winter travel.

Good insulation helps reduce heat loss, but it does not remove the need for ventilation.

People, wet clothing, cooking and everyday living all introduce moisture into the vehicle. That moisture needs a controlled route out of the van.

Roof vents, fans and other ventilation components should therefore be considered before the insulation and interior ceiling are completed.

8. Furniture and Beds – DIY Can Save a Significant Amount

Campervan furniture can be built yourself, purchased as modular units or professionally made to measure.

This is one area where DIY work can make a major difference to the final budget.

A simple fixed bed with storage underneath can be relatively inexpensive. Complex bespoke furniture, drawer systems, mechanisms and premium finishes can increase costs quickly.

Weight matters here as well.

Plywood, furniture, batteries, water, kitchen equipment and other components can add hundreds of kilograms to a conversion. Always consider the vehicle’s maximum permitted mass and remaining payload throughout the build.

9. The Kitchen and Water System Can Be Kept Simple

A campervan does not necessarily need a complete motorhome-style kitchen.

At the simple end, a kitchen can consist of a worktop, portable stove, small sink and removable fresh and waste water containers.

At the other end of the scale, a system can include fixed water tanks, a pressure pump, hot water, a large compressor refrigerator, a fixed hob and even an indoor shower.

Think carefully about what you will actually use.

If most of your trips involve campsites and you regularly cook outside, spending thousands on a complex kitchen and water system may not improve your travelling experience by the same amount.

Where Can You Save Money on a Campervan Conversion?

You do not need to install every possible feature during the first build.

You can reduce costs by:

building furniture and lining the interior yourself
sizing the electrical system according to actual demand
keeping the water and kitchen systems simple
adding non-essential comfort features later
calculating material requirements before ordering
planning the layout carefully before construction begins.

Many accessories can be added later without dismantling the interior.

Where Should You Not Cut Corners?

It is generally worth paying particular attention to components that will be difficult to access after the conversion is finished.

Rust and Preparation

Clean the metal surfaces and repair any corrosion before covering the bodywork with insulation and interior panels.

Sound Deadening and Vibration Control

Treating large metal panels is much easier while the van is still empty.

Condensation Control and Thermal Insulation

Replacing materials hidden behind finished walls and furniture later can require a significant amount of dismantling.

Electrical Preparation

Plan cables, conduits and hidden electrical routes before closing the walls.

Upholstery Adhesives

Vehicle interiors experience much greater temperature variation than most indoor environments, so use adhesives suitable for automotive applications.

A useful rule is simple:

Invest in the materials and structures you do not want to dismantle and rebuild later.

What Is the Best Order for a Campervan Conversion?

Every project is different, but a typical build sequence might look like this:

Define the intended use and design the layout.
Clean the vehicle and repair any corrosion.
Install windows, roof vents and other openings.
Apply sound deadening and vibration control.
Install condensation control and thermal insulation.
Complete hidden electrical and technical preparation.
Build the floor, walls and ceiling.
Install the interior lining.
Build the bed and furniture.
Complete electrical, water and other systems.
Finish and test the conversion.

Careful planning before ordering the first materials can save both money and many hours of unnecessary work.

Expomatto and Eaglefelt – Materials for Campervan Conversions

Expomatto Oy supplies automotive upholstery felt, vehicle carpet, sound deadening, thermal insulation, adhesives and other car upholstery materials suitable for campervan and panel van conversions.

Our supplier Eaglefelt specialises in insulation, sound deadening and interior lining solutions for campervans and vans, as well as practical technical guides for DIY and professional builders.

Through this cooperation, Expomatto offers materials suitable for both professional vehicle converters and people building their own campervans.

If you are planning your own conversion, start by defining how the vehicle will be used and then calculate the quantities of material you actually need.

Explore Expomatto Upholstery Felts and Car Carpets

Explore Expomatto Car Upholstery Accessories

Read Eaglefelt: How Much Does a Campervan Conversion Cost?

Frequently Asked Questions About Campervan Conversion Costs

How much does a campervan conversion cost?

A DIY campervan conversion can broadly cost from around €3,000 to more than €30,000, excluding the base vehicle. The final cost depends particularly on the electrical system, heating, windows, furniture, kitchen, water system, insulation and interior finish.

Can you convert a van into a campervan for €5,000?

Yes. A €5,000 DIY campervan conversion can be possible if you keep the design relatively simple, do most of the work yourself and prioritise the essentials.

How much does it cost to insulate a campervan?

The cost depends on vehicle size, insulation thickness, materials and whether the system also includes condensation control and sound deadening. For more detailed material examples and calculations, see Eaglefelt’s campervan conversion and insulation guides.

How much does it cost to carpet line a campervan?

The cost depends on vehicle size, the total area being lined, the chosen automotive lining material and the amount of adhesive required. Calculate the approximate surface area before ordering and allow additional material for trimming and waste.

What type of lining carpet is best for a campervan?

Stretch automotive lining felt or carpet is particularly useful for campervan walls, ceilings, doors, pillars, wheel arches, plywood panels and other irregular surfaces. Its flexibility makes it easier to achieve a clean finish around curves and complex shapes.

What is the most expensive part of a campervan conversion?

After the base vehicle, the electrical system can be one of the largest individual expenses. Lithium batteries, solar panels, charging equipment and a powerful inverter can add several thousand euros to a high-spec conversion.

Is it cheaper to convert a campervan yourself?

DIY work can significantly reduce labour costs and gives you complete control over the layout and finish. However, it is important to recognise the limits of your own skills. Safety-critical work and installations requiring professional qualifications should always be completed by an appropriately qualified professional.

Where should I start when converting a van into a campervan?

Start with the intended use and layout. Decide how many people will travel and sleep in the van, when it will be used, how much electricity and water you need and what equipment you intend to carry. Only then should you finalise your material list and budget.