Loft Conversion Cost Calculator

A loft conversion can be a great way to add extra living space to your property, without the stress, hassle and cost of moving home. But loft conversion costs can vary depending on the type of conversion you choose and the amount of work involved.

There’s a lot that goes into building a loft conversion in the UK, such as construction work, insulation, windows, electrics and labour. Prices vary depending on the type of loft conversion, the size of the property and whether you’re adding additional features, such as an ensuite bathroom or bespoke storage.

To help you out, this loft conversion cost calculator gives you a speedy estimate of the type of budget you will need for the loft conversion you’re dreaming of.

Loft Conversion Cost Calculator

How to Use This Loft Conversion Cost Calculator

You can use this loft conversion cost calculator to get a rough idea of how much a loft conversion is likely to cost. By putting in a few details about your property and the type of loft conversion you’re planning, you can get an estimate of what you can expect to pay.

Property Size

The size of your property and how much loft space you have have a big impact on loft renovation costs. Bigger lofts usually require more building materials, labour and time, which can increase the cost. You'll also probably find that bigger spaces need additional structural work, which also increases attic conversion costs in the UK.

The shape and height of your loft can also make a difference to the overall cost. Lofts with good head height tend to be easier and quicker to convert, whereas low-roof structures are usually more complex, meaning they're more time-consuming to work on.

Type of Loft Conversion

There are a variety of loft conversion types in the UK, and they all work in a slightly different way, which also means prices can vary a lot.

When you’re planning a loft conversion, you will need to choose between:

• Roof Light Loft Conversion - Often the most affordable option, and it works within the existing roof structure. These loft conversions tend to involve adding windows, insulation, flooring and stairs.
• Dormer Loft Conversion - Hugely popular in the UK, created by extending part of the roof outwards to create additional headroom and floor space.
• Hip-to-Gable Loft Conversion - These involve altering the sloping side of the roof to create a vertical wall, increasing the amount of usable space inside.
• Mansard Loft Conversion - Typically the most expensive loft conversion option, requiring alterations to the roof structure, including raising party walls and creating a rear slope.

Simple loft conversions tend to be cheaper, whereas larger projects - meaning those involving major roof alterations, steel supports and additional construction work - increase loft conversion costs, as more work is required.

Intended Use of the Space

The vision you have for your renovated space can also affect the overall cost of the loft conversion. Layouts with minimal fixtures and fittings are usually cheaper, but rooms that require plumbing, electrical work or bespoke features will usually cost more. The more features added to the loft, the higher the overall price is likely to be.

Lots of homeowners in the UK convert their loft into an ensuite bedroom, whereas others use the space as a home office, playroom or extra living area. The cost of each differs. For example, creating an ensuite bedroom can have additional costs because of the extra plumbing, drainage and bathroom installation work required.

Additional Features

Many homeowners add extra special features during a loft conversion, and these can have an impact on the final cost. Though some additional features are straightforward, others involve extra labour, bespoke work or more complex installation.

Popular features include ensuite bathrooms, built-in storage, roof windows, skylights, bespoke staircases and underfloor heating. Usually, bespoke designs and complex specifications cost more.

Regional Price Differences

Loft conversion costs can vary hugely, depending on where you live in the UK. Labour rates and construction costs tend to be higher in London and the South East, which makes loft renovation projects more expensive in these areas. You’ll likely find the cost of a loft conversion is slightly lower elsewhere.

Using your location helps the loft conversion cost calculator to provide a more realistic estimate, with costs based on average prices in your area.

Why Do We Include Labour Costs?

Whether you’re looking for dormer loft conversion costs or you’re planning another type of loft renovation, you’ll find labour costs included. This is because loft conversions are major building projects that require skilled professionals across several trades, and that quickly adds up.

Professional loft conversion specialists help to ensure the work is carried out safely and in line with UK building regulations, including:

• Ensuring the work is structurally safe
• Complying with building regulations
• Installing insulation, electrics and plumbing correctly
• Completing the project efficiently and safely

Loft conversions often require builders, electricians, plumbers, roofers and plasterers to work together, and hiring experienced tradespeople helps to ensure the conversion is completed to a high standard.

Ready to Get a Quote?

Once you’ve used the loft conversion cost calculator, the next step is to get quotes. At MyJobQuote, you can get up to three free, no-obligation quotes from loft conversion specialists near you. It’s a quick and simple way to compare local tradespeople and find the right professional for you.