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How much will your dream Loft Conversion cost? Use our...


Loft Conversion Cost Calculator

What will a North West loft conversion cost you?

Our loft conversion calculator is a computer-generated tool, designed to give you a realistic estimate of how much the cost of a loft conversion would be for your space.

If you live in the North West and want to work out what a loft conversion costs, we are ideally situated to help. We work with homeowners around Greater Manchester, Lancashire and Cheshire to convert lofts and calculate the costs involved with this.

Whether you are trying to work out a small loft conversion cost, or you have a bigger space that you’re hoping to convert, our purpose-built calculator will give you all the answers you are looking for. Use our calculator to find out what it would cost to convert your loft, or call us directly on 01625 885 030 to arrange a consultation with a specialist.

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  • Existing Property & Conversion Type
  • External Elevations and Building Works
  • Internals

FAQs below, click to

How much does a loft conversion cost?

Converting a loft is one of the fastest and most affordable ways to enhance the space of your home.

When trying to work out how much a UK loft conversion costs, different factors must be taken into account. These include:

  • The space you are working with. How big is your house? What kind of roof structure does it have (for example, it is a sloping roof, or is it flat?). Is it a detached house, or does it share a wall/walls with neighbours?
  • Structural considerations. What structural requirements will need to be taken into consideration (for example, does your loft have beams, joists, or any other prominent features that need to be considered?)
  • Your neighbours and planning permission. Do you share a wall (called a ‘party wall’) with anyone else? How will this affect your planning permissions and the type of loft conversion you are able to go forward with?
  • The purpose of the loft conversion. Why are you considering converting your loft? What do you intend to use the extra space for (will it be a storage, work or living space for instance) and how will that impact what you need the space to look like when it’s finished?

Our useful calculator will take all these factors into account when working out your personal loft conversion cost estimate.

How can I work out what a loft conversion in Manchester costs?

If you’re trying to find out the cost of converting your loft in Manchester or the North West, our calculator is a great place to start.

Our calculator can help you work out how much a Greater Manchester loft conversion costs, and provide you with a detailed estimate and breakdown.

Our team has worked extensively on North West loft conversion projects, in Greater Manchester, Cheshire and Lancashire. Our work includes the following locations:

  • Altrincham
  • Stretford
  • Stockport
  • Bowden
  • Sale
  • Alderley Edge
  • Hale
  • Cheadle Hulme
  • Wythenshawe
  • Lymm
  • Hazel Grove
  • Wilmslow
  • Didsbury

No matter where you’re based in the North West, our calculator is designed to give you a realistic estimate of the total costs of a loft extension. Whether you’re trying to estimate the price of a loft conversion in Bolton, or you want to determine the kind of budget you’ll need to convert a loft in Didsbury, we can support you.

Our loft conversions in the North West are conducted by our professional, experienced team. In the past, we’ve worked on loft conversions in Stockport and other parts of Greater Manchester, as well as working with clients on loft conversions in Manchester central.

What are the cheapest types of loft conversion?

There are four main types of loft conversion. These all involve different processes, and have varying costs, with some being more cost-effective than others. The four main types of conversion are as follows:

  1. Dormer loft conversions. This is one of the most common types of loft conversion chosen by homeowners. This process involves a structural extension that projects vertically from the roofing of the house. It is often referred to as a simple flat roof dormer extension. This is one of the most cost-effective loft extension types as it is a straightforward process than adds more space to the existing roof area.
  2. Mansard loft conversions. This extension is constructed by raising the party wall (a wall shared with a neighbour) and rebuilding a slanted roof onto it. This can take more time, as it involves further planning permissions. It is most popular with people living in terraced houses who want to create more loft space. However, it is generally the most expensive type of loft conversion.
  3. Hip-to-gable conversions. These types of loft conversions are most commonly used by people who own end-of-terrace houses. They involve the roof space being extended horizontally, with the ceiling joists extended outwards. They are usually cheaper than mansard conversions, but a more expensive option than dormer.
  4. Internal conversions (such as roof light loft conversions). These are usually the most cheap loft conversion types. In fact, estimates put this process at 25% cheaper than other types of roof extension. This is because construction does not involve altering or expanding the structures of your roof itself. Instead, windows are usually added to provide more natural light, or skylights are added. This is faster and requires less resources, so the average costs are lower.

What is the cost of a dormer loft conversion?

A dormer loft conversion, which is the most common kind of loft extension, involves your roof space being extended with the use of a vertical structure. This then sits on the top of your roof.

It is an extremely popular option, as it is a more straightforward and less expensive process than other types of loft conversion (such as a mansard or hip-to-gable) and it provides you with more room or loft space.

The average loft conversion cost for a UK dormer extension is around £26,000 in total. But a dormer windows roof conversion can cost anything from £7,000 to £50,000 depending on the size of your property and your needs.

If you are asking yourself, ‘how much does a loft conversion cost’ and you want to know more about dormer windows and extension prices, use our calculator to find out a realistic estimate. Or, call us directly on 01625 885 030 to arrange a consultation with a loft conversion specialist.

What are the small loft conversion costs?

Small loft conversion costs are often lower than larger-scale projects. They can range from £5,000 to £30,000 (but this is dependent on different factors). But while the area dimensions of your house, loft and roof will be key factors in your cost estimates, there are other considerations to bear in mind. For example, our calculator also considers factors such as your budget, deadlines and plans for the space. These are all elements which will impact the final cost of a UK loft conversion.

How much would a loft conversion cost me if I wanted to add stairs?

When calculating the price of a loft conversion, stairs – or plans to add them – are a very important factor.

If you want to add stairs into your plans for a loft extension, this will impact the total conversion costs. This is because building stairs requires more resources and time than other types of home conversions.

Our loft conversion calculator takes your plans to include stairs in your designs into consideration when creating an average cost estimate for converting your loft.

Do I need planning permission for a loft conversion?

You do not usually need planning permission for a loft conversion, as this falls within normal permitted development rights.

In certain cases, you may need to apply for planning permission when undertaking a loft conversion. This is often the case if your plans exceed certain parameters or if your plans for converting your loft impact your neighbours’ property. It can also be the case if you need to factor in special building regulations, such as if your building is listed.

If you need to apply for planning permission, this usually involves paying fees to your council or local authority. This will impact your total loft conversion cost.

Use our cost calculator to determine a realistic estimate of how much it will cost you to convert your loft space.

What other elements do I need to factor into to finding out how much my loft extension costs?

Loft conversion specialists analyse different factors when putting together a quote.

Things you should consider when trying to determine the cost of converting a loft in the UK are:

  • How much building control you have (whether you share a party wall with a neighbour or have unlimited scope to extend your property)
  • How much you want to extend your space (for example, do you want more headroom, more floor space or do you just need building work to add windows for extra natural light?)
  • The intended use of the new room/space (will you need it be a habitable room or is it simply for storage. If you intend it to be a bedroom rather than a living room, will you need to install plumbing for an ensuite?)

If you need a direct home conversion or home extension quote, call us on 01625 885 030 to arrange a consultation with a member of our team.

How much is a loft conversion in Manchester?

The average cost of a Manchester loft conversion in 2021 varies depending on the size and scale of the property you are converting. Generally, a loft conversion in Manchester costs between £16,000 and £50,000.

Generally, converting your loft in the North West is much cheaper than in other areas of the UK (such as London and surrounding areas).

When trying to calculate loft conversion costs, the overall value of your property should be factored in. This is impacted, to an extent, by your location. For example, Stockport loft conversion costs, as well as loft conversions in Bolton, tend to be cheaper, while projects we have worked on in Altrincham, Didsbury and Alderley Edge are more expensive. This is simply to do with the costs of living in these areas varying.

How much is a loft conversion in Stockport?

The average cost of loft conversion in Stockport is around £20,000. As with other loft conversions in Manchester, the North West and the rest of the UK, this varies depending on the size of your property and the type of conversion you undergo (for example, whether it’s an internal, hip-to-gable, dormer or mansard loft conversion). The inclusions you want to have in your conversion will also impact the price (for example, adding stairs can increase the final costs) and the intended purpose of your conversion. Generally speaking, Stockport loft conversions cost between £15,000 and £35,000.

What loft conversions have you worked on before?

Our team has worked extensively throughout the Manchester and Greater Manchester areas, as well as on many Lancashire and Cheshire loft conversion projects for homeowners.

Our services span across the North West area and include loft conversions in Bolton, Stockport, Altrincham, Wilmslow, Lymm, Chorlton and Didsbury, as well as several other surrounding areas.

Learn how a typical Loft Conversion project with First Choice runs from start to finish.