How much does a bungalow loft conversion cost?

Updated on

Curious about the price of a bungalow loft conversion? Whether you’re looking at a simple conversion or something more comprehensive, let’s take a look at how much conversions typically cost and how these costs break down. All costs are estimates that are accurate as of 2024.

Want to get quotes from local tradespeople?


Top rated Loft Conversion Companies

Our Loft Conversion Companies, are rated 4.5 out of 5 based on 92 reviews from customers like you.

Quality screening

Easily find vetted and reviewed local tradespeople. Just post your job to get free quotes from tradespeople near you across the UK.

We'll cover the following topics in this pricing guide:
  1. Average bungalow loft conversion cost
  2. Common bungalow loft conversion costs
  3. How long does a bungalow loft conversion take?
  4. How to reduce your bungalow loft conversion costs
  5. FAQ
  6. Your bungalow loft conversion checklist

When it comes to getting a bungalow loft conversion, there are lots of things to bear in mind. Before you look into getting a trusted professional to do the work, you need to understand what your budget is, the scale of the work that needs doing and any specialist equipment that may be involved.


Average bungalow loft conversion cost

Converting the loft of your bungalow can open up new space for storage, or even create new rooms. So, before getting started, it’s important to know how much you should expect to pay on average for a loft conversion. After all, when making important changes to your home, it’s worth knowing that you’re getting the best quality of work for the most competitive price.

But determining exactly what you want to use your conversion for will determine how much work will be required to make your loft the ideal space. And with material, equipment and labour costs rising in recent years, what is the average cost of a bungalow loft conversion?

To see the average price of common loft conversion jobs, take a glance at the table below. Or to see a full breakdown of bungalow loft conversion costs for each job, keep scrolling to learn more.

Type of conversionAverage price range
Room in loft£15,000 to £20,000
Dormer conversion£30,000 to £60,000
Hip-to-gable conversion£40,000 to £65,000
Mansard conversion£45,000 to £70,000

Get a loft conversion quote


How much does a bungalow loft conversion cost in the UK?

There are a few different types of bungalow loft conversions you can opt for, each coming with a different amount of work needed to get it done. However, it’s important to remember that many lofts can’t be converted to rooms by law without structural changes being carried out, so there are a number of additional costs to bear in mind before getting started on your conversion.

You’ll also need to take into account the costs of hiring a skilled tradesperson for a range of different services. Throughout the process of carrying out your conversion, you’ll likely need to rely on the skills of builders, plasterers and joiners, among others. And with labour costs having increased in recent years, it’s important you factor in these costs.

Finally, you should also bear in mind material and equipment costs. Hiring a skip, for example, typically costs between £60 and £120. With all this being said, the average bungalow loft conversion price comes to around £45,000.

Common bungalow loft conversion costs

Cost of a room in a loft conversion

A simple way of creating a bungalow loft conversion with the minimum level of changes required is a ‘room in loft’ conversion. This type of conversion means turning your loft into a single room, meaning you won’t need to worry about expenses like wall partitions. However, depending on the specifications of your loft, you may still need to be prepared for some costs to make this space suited to becoming a usable room.

The exact changes you need to make can vary, but you should bear in mind any structural changes you may need to make to the roof or even the walls to make it viable. Remember that labour and material costs will also play a factor. You can expect to pay between £15,000 and £20,000 for this type of loft conversion.

Dormer loft conversion cost

A dormer conversion is where a box-like structure is added to the roof. Before this though, preparatory work will need to be completed to pitch your roof to make it capable of supporting the dormer structure. From here, the new structure will be added, creating walls that sit at a 90-degree angle to the floor.

A dormer conversion requires more work and skilled labour than a simple room in loft conversion, so you should expect to pay slightly more for this type of work. On average, dormer loft conversions typically cost between £30,000 and £60,000.

Cost of a hip-to-gable conversion

A hip-to-gable conversion creates a new room by extending a hipped roof vertically from the ridgeline to create a gabled roof. This type of conversion is similar to a dormer conversion, but it involves changing a hipped roof into a gabled one, and as a result needs a specialist tradesperson to get the job done. Given the nature of this type of conversion, the cost of a hip-to-gable loft conversion is typically between £40,000 and £65,000.

Cost of a mansard conversion

Mansard conversions are usually built into the rear of a house and involve the construction of a rear wall that sits at an almost vertical 72 degrees. This type of conversion involves changing the structure of your roof, and so is one of the more expensive types of loft conversion available. The specialist nature of a mansard conversion means you should expect to pay between £45,000 and £70,000 to see it through to completion.

Average cost of project management

Throughout the conversion process, you’ll need to work closely with skilled tradespeople like carpenters, joiners and electricians. And with each of these tradespeople bringing their own ways of working and skills, it could be a good idea to look for a dedicated project manager who can co-ordinate the construction process, manage additional costs and keep you updated on the construction timeline.

Different project management contractors will charge differently based on what they offer, the duration and scale of the project. But as an average, you should expect to pay around £8,800.

Average cost of scaffolding

To help tradespeople safely access your loft, you’ll need to factor in the cost of scaffolding. This is one of the earliest stages of preparing for a loft conversion, but depending on how much scaffolding is needed, costs can vary.

As a general rule, the average price of scaffolding for a two-storey semi-detached house is around £875, but this can be more or less depending on how much scaffolding you need. Hiring scaffolding and erecting it yourself is another option and can be cheaper. But remember, operating scaffolding can be dangerous, so it’s worth considering using the specialist skills and qualifications of professionals rather than embarking on this task yourself.

Cost of roof coverings

When work begins on your loft, you don’t want to see are leaks and damage in your new space because of the weather. Roof coverings protect the work site and your home from damage, paving the way for your ideal conversion. So how much should you expect to pay for roof covers?

As is to be expected, the exact price of roof coverings depends on how much you need. For a 30m2 roof, you should expect to pay between £6,400 and £8,250.

Cost of steelwork for structural changes

Depending on the loft conversion you want, tradespeople may need to use steelwork to make structural changes to your roof. A qualified and skilled professional knows that maintaining structural integrity is vital when it comes to your bungalow loft conversion. And while alternatives such as wooden beams can also serve to support your new structure, steel beams are the most reliable option.

These beams bear the new weight of your conversion. Depending on the scale of your conversion, you may need one steel beam or several. To find out how many you need to support your bungalow loft conversion, speak to a professional. The typical cost for these beams is around £200 per metre covered. Add to this labour and decoration costs, and the average price can come to £6,000.

Changes to roof structure cost

Altering the structure of your roof can mean making it larger or smaller, making it more pitched or changing its shape. Doing so can be an important part of your loft conversion as it can form part of the process of creating new rooms or redesigning your existing space. But as one of the more demanding parts of your conversion, how much should you be expecting to pay?

Your bungalow roof alteration quote will vary depending on the size of the roof and your own preferences. The average cost of a new roof in the UK is between £5,000 to £6,000.

Cost of joinery

With your bungalow loft conversion taking shape, it’s time to start thinking about the joinery features you would like in your new room. From doorways to window frames, a specialist joiner can help convert your bungalow loft into your dream space. As with most of the services related to your conversion, costs can vary depending on how much work needs doing.

Not including the cost of a new stairway, which we will look at in the next section due to its up-front cost, the average cost of joinery work in a loft conversion is around £3,800. However, this can vary a lot depending on the work that you need carrying out.

Cost of Velux windows

Velux windows are pitched windows that allow lots of light to enter your loft, while also giving you good air circulation. Not only this, but Velux windows are a highly attractive feature, and due to their functionality with pitched roofs, they’re an excellent option for your loft conversion. Depending on the size of the Velux windows you want and how many you’re looking for, you can expect to pay around £800 to £1,100 for each window.

Cost of wall partitions

If you’re planning on creating more than one room in your loft, wall partitions will split your newly converted loft into different rooms. Different materials and types of partition can be priced differently, but generally, you should expect to pay between £100 and £150 per square metre of wall.

Cost of a new staircase

Building and joining a new staircase to your converted loft often doesn’t fall under joinery costs, as a new staircase can cost a lot. As with general joinery costs, you’re also going to need to consider the specialist qualifications, experience, labour and material costs that come with hiring the right person for the job.

A new staircase typically costs around £2,000, but this could be higher or lower depending on the exact style of the stairs you choose. While most basic, spiral and alternating tread stairs cost between £350 and £1,200, custom-made stairs that reflect your own style preferences can cost anywhere from £3,000 to £10,000.

Cost of plastering

Plastering your new loft conversion will enable you to add new wall and roof detailing into your loft and paves the way for work that you’ll carry out in the future. It’s an important step towards making your loft conversion the right space for you.

A skilled plasterer can do a wide range of different skills, from applying render to repairing cracks and damage in your walls. So, depending on how much work you are looking for, you should expect to pay around £2,400 for plastering work.

Cost of decoration

One of the final steps to making your loft conversion a liveable space is adding in decoration and detailing. As with other costs, exactly what kind of finishing touches you want will make the average price vary, but you should expect to pay an average of around £1,200.

How long does a bungalow loft conversion take?

The first step towards getting a bungalow loft conversion is to secure planning permission, should you need it. Most bungalow loft conversions won’t require planning permission, however, if you live in an area of outstanding natural beauty or are getting a mansard conversion, you will usually need to secure permission. The timeline for this usually takes eight weeks, but an appeal can take as long as 12 weeks.

With planning permission secured, you can move ahead to your loft conversion. As an average, you should expect your bungalow loft conversion to take around seven weeks, but this can depend on a few factors, including the size of the conversion and the specifics of your project. Some of the common timelines for loft conversions can be seen below.

 Loft conversionAverage time to complete
Room in loft conversionFour to six weeks
Dormer loft conversionSix to eight weeks
Hip-to-gable loft conversionSix to eight weeks
Mansard loft conversionEight to ten weeks

How to reduce your bungalow loft conversion costs

Before getting started on your conversion project, you may want to know what you can do to keep some of the project costs down. There are a few easy steps you can take, such as taking on some aspects of the conversion yourself and shopping around to get the best quote possible. Let’s take a look at some of the options you have for managing costs.

1. Explore DIY options While there are some parts to your loft conversion that should always be taken care of by a qualified and skilled professional, such as any structural changes, there are also elements you may want to take on yourself. This could include plastering and decoration or even hiring scaffolding yourself.

2. Always get the best quote Quotes can vary based on a number of different factors, including how close a tradesperson is to you. The further you are from a tradesperson, the more expensive a quote is likely to be. So, before making a decision, be sure to use MyBuilder to find the best local tradesperson for the job and secure the right quote for you.

3. Use your money wisely Remember to stay close to your original budget and plans. While there might be a wide range of extra features and installations you could be tempted to add in, sticking to your original plan means you have the best chance of keeping your project within budget.


Who is the best person to carry out a bungalow loft conversion?

You will almost certainly need to work with a variety of tradespeople including builders, roofers and joiners. Different professionals can help carry out different parts of your conversion, so be sure to search for the most relevant quotes from each professional you’ll be working with.

Can you do a loft conversion in a bungalow?

In most cases, you can carry out a bungalow loft conversion without any issues. But in some cases, you will need to apply for planning permission due to the potential impact of your conversion on the area.

Can I do a bungalow loft conversion myself?

Due to the scale of the project and the importance of making sure any loft conversion meets local planning regulations, we’d recommend using skilled professionals to carry out your conversion.

Your bungalow loft conversion checklist

To help you prepare for your bungalow loft conversion, here’s a handy checklist :

Budget accurately Budgeting is one of the most important parts of any project. Once your mind is set on having a loft conversion carried out, deciding what your budget is will help you work out exactly what type of conversion you can afford and any extra details you could consider along the way.

Check out the reviews of suitable tradespeople As well as searching around for the right quotes, be sure to take some time to check out the reviews of tradespeople too. This way, you’ll know exactly what to expect and can narrow down your search for the right person for the job. MyBuilder allows you to easily see customer reviews to help put your mind at rest.

Make sure your chosen tradesperson has the right qualifications As a bungalow loft conversion can be a specialist job, you should make sure to seek out tradespeople with appropriate specialist qualifications and experience.

You can find a wide range of skilled and experienced tradespeople on MyBuilder. So, whether you’re looking for the perfect professionals for carrying out a mansard conversion or installing new Velux windows, you can use MyBuilder’s smart matchmaking system to help find the right person for the job.