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Last updated: 5 December 2024

How Much Value Does a Loft Conversion Add? (2024)

  • A loft conversion can increase your property value by up to 20%.
  • In London, where space is at a premium, the percentage increase could be even higher.
  • Insulating your loft conversion can further increase your property's value, enhance energy efficiency, and reduce bills by up to 25%.
  • Compared to renovations or extensions, loft conversions offer one of the highest returns on investment.

A loft conversion is often considered one of the smartest investments for homeowners looking to boost their home’s worth. 

Beyond the financial gain, it also offers the practical benefit of adding valuable living space, whether that’s an extra bedroom, home office, or even a cosy retreat. With relatively lower costs compared to other home improvements, a loft conversion enhances the comfort of your home and makes it more attractive to potential buyers. 

In this guide, we’ll explore how much value a loft conversion can add and why it’s a wise choice for your property.

Interested in loft conversion? We can help you get the best deal! Don’t waste hours contacting installers on your own. Simply fill out our 30-second form and we’ll do the rest. We’ll connect you with up to 3 trusted installers near you for free, no-obligation quotes. Click below to get started.

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How much value does a loft conversion add?

A loft conversion can increase your property value by up to 20%—a significant boost, considering the typical UK home price. 

For instance, if your property is worth £300,000, a loft conversion could potentially add £60,000 to its value. 

This percentage varies depending on the type of conversion and the local housing market. A well-executed dormer loft conversion, for example, is one of the most cost-effective options and could see an even higher return in some areas.

Monetarily, homeowners typically spend between £20,000 and £60,000 on a loft conversion. In return, the added value can often exceed the initial cost, particularly in high-demand areas where additional living space—like an extra bedroom or home office—can make a substantial difference. 

When you compare this to other home improvements, such as kitchen renovations or extensions, loft conversions offer one of the best returns on investment.

It's crucial, however, to consider the specifics of your property and location. In London, where space is at a premium, the percentage increase could be even higher. On the other hand, in areas where property prices are lower, the percentage increase might be less, but the loft conversion still adds substantial value to your home.

What kind of value can a loft conversion add to your home?

A loft conversion adds value to your property in multiple ways:

  • Return on investment: Loft conversions typically cost between £20,000 and £60,000, but the return can often exceed the initial cost, especially in areas with high property demand. In prime locations, this means the value added could be significantly more than the conversion expense, making it a smart financial decision.
  • Increased living space: Converting your loft into a usable room can give you up to 30% more living space without the hassle of moving. Whether you add a bedroom, a home office, or even a recreational room, this extra space can transform how you live in your home.
  • Attracts potential buyers: A home with an additional room or office is more appealing to potential buyers, especially in today’s market, where remote work and flexible living spaces are in high demand. A loft conversion could be the deciding factor that sets your property apart from others.
  • Enhances energy efficiency: Adding insulation during your loft conversion can cut heat loss by up to 25%, significantly lowering energy bills. Not only does this save you money, but it also improves your home’s Energy Performance Certificate (EPC) rating—a valuable asset for eco-conscious buyers.
  • Enhances comfort: Converting your unused attic into a functional living space, such as a new bedroom or home office, can greatly improve your home’s comfort. 

Comparing loft conversion types and installers can take hours and be very stressful when done alone. Fortunately, we can connect you with up to 3 approved installers near you for free! Just fill in our 30-second form, and we’ll do the rest. Click below to begin!

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Which loft conversion adds the most value to your home?

Among all types of loft conversions, dormer and mansard conversions tend to add the most value to your home, often increasing property value by up to 20%. This is due to the significant additional space they create and their flexibility for different uses, such as extra bedrooms or en-suite bathrooms. 

However, the actual value added depends on the type of conversion and the property’s location.

Let’s review how different loft conversion types differ in the estimated value increase:

Type of loft conversion Estimated value increase
Velux conversionUp to 15%
Dormer conversionUp to 20%
Hip-to-gable conversionUp to 15-20%
Mansard conversionUp to 20%
En-suite loft conversionUp to 20%
Simple attic renovationUp to 10%

To make your estimation more precise, here’s a short description of these types of loft conversions:

  • Velux conversion adds skylight windows to your existing roof without altering the structure, making it a cost-effective option. It's ideal for lofts with enough headroom, as it maximises natural light.
  • Dormer conversion extends vertically from the existing roof, creating additional headroom and floor space. It’s one of the most popular loft conversion options, offering a good balance between cost and extra living space.
  • Hip-to-gable conversion replaces the sloping side of a roof with a vertical wall, expanding the loft’s usable space. This option is perfect for homes with hipped roofs, providing a more spacious and functional loft area.
  • Mansard conversion involves raising the roof and altering its structure with steeply sloped walls, significantly increasing the available space. This type of conversion is typically more expensive but offers the maximum headroom and flexibility for creating larger rooms.
  • En-suite loft conversion adds a bathroom alongside a bedroom or living area—particularly useful in a 50m2 loft conversion.  It increases convenience and functionality, particularly when transforming the loft into a master suite or guest room.
  • Simple attic renovation upgrades the existing loft space without major structural changes, making it suitable for storage or light use. This is the most affordable option but offers limited added functionality compared to full conversions.
What increases a house’s value more – a loft conversion or an extension?

Both loft conversions and extensions can significantly boost your home’s value. Loft conversions typically add up to 20% and cost between £20,000 and £60,000, while extensions can increase value by 15-25% but often start at £30,000.

 

Although extensions offer more design flexibility, loft conversions are usually less disruptive and more cost-effective, making them a popular choice for homeowners.

Is a loft conversion a smart investment for your home?

A loft conversion is generally a smart investment, often adding up to 20% to your property value. 

Before starting, it's important to consider a few key pieces of loft conversion advice.

You’ll need to ensure that your loft meets the minimum height for loft conversion of 2.2 metres. To measure it, simply stand in the centre of the loft space and measure from the floor to the highest point of the ceiling.

In some cases, planning permission is needed for loft conversion—especially if you’re making structural changes or live in a conservation area.

Keep in mind that a loft conversion may increase your council tax band, depending on the size of the conversion and local authority regulations.

Once you've assessed these factors, it’s crucial to compare quotes from different contractors. A well-planned loft conversion can not only boost your home’s value but also improve your quality of life by adding much-needed space. 

To get started, fill in a simple form to receive up to 3 no-obligation quotes from local installers. This will help you make the best choice for your project while keeping costs under control. Click below to begin!

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