How much does a loft conversion increase the value of my property

On average a loft conversion can increase your property value by around 10% – 20%. That said, this percentage can differ depending on numerous factors, including the loft type, property size, location, features of the conversion and more.

How much does a loft conversion increase the value of your property?

Q: What return on investment (ROI) could a loft conversion offer?

If your property has permitted development rights, you can build a pitched dormer conversion under a Certificate of Lawfulness. This certificate means that, as long as you build within the council’s guidelines, you do not need to wait for the application to be approved before work commences. If you do not have permitted development rights, you will need to obtain planning permission. With planning permission, you cannot start work until it has been granted. Once a planning application is validated with the council, it should issue a decision after eight weeks.

How much does a loft conversion increase the value of your property?

When thinking about extending your property, one of the first things you’re likely to consider is how much it could increase the price of your property by.

As there are so many options available for converting your loft space, there isn’t one simple answer to the question of how much a loft conversion will increase the value of your house, although it’s been known that a loft conversion can add on average around 10% – 20% more to the value of your property.

That said, the percentage could go up or down depending on numerous factors. Some of the key things to consider before going ahead with your project include:

What type of loft conversion you’re adding to your property
The location of your property and its surroundings
What you will be using your loft conversion for
Features of the loft conversion
The cost of the loft conversion vs the increase in value it could offer

What type of loft conversion are you adding to your property?

The type of loft conversion you’re planning will play a huge factor in what value could be added to your home. Not all properties are suitable for all types of loft conversions so it’s always worth speaking to a loft conversion expert to understand what options are available to you before thinking too far ahead.

Where is your property located and what are the surroundings like?

The geographical location will dictate the value increase a loft conversion could offer, as will the properties surroundings and local amenities. Good transport links, highly rated local schools, and a pleasant neighbourhood with a low crime rate are all things considered by most home seekers, so if your property is already based in a sought-after location, you’re likely to see a larger increase in your property’s value after converting your loft than if you’re based in a less desired location.

What will you be using the loft conversion for?

Another factor in what percentage increase you could expect a loft conversion to have on your property is what you’re going to use the loft conversion for. Typically, a converted loft that provides an extra bedroom with an ensuite will add the most value to your home. Home offices are now one of the most in-demand property features since the rise in home working following the Covid-19 pandemic and converting your loft into office space can also offer a significant rise in the value of your property.

What features does your loft conversion have?

Features of the loft conversion will also dictate the extra value you may be able to add to your property. The design and layout of the conversion as well as the additional space created, the décor, available storage in your loft conversion and how you create natural lighting are all things that will play a part.

What return on investment (ROI) could a loft conversion offer?

The cost of your loft conversion and the ROI it could offer will depend largely on the points previously mentioned. Once you’ve considered the points above, it’s advised you speak to a loft conversion specialist to see whether your house is eligible for a loft conversion, and if so, what options are available to you. Once this has been established, a quote can be provided so you know how much the project will cost initially. With this in mind and taking the previous points in to consideration, you should have a good idea on what your return on investment would look like if you were to sell your property. The property market is ever-changing, so its worth noting that the value it could add to your property could go up or down over time.

Looking to add value to your property in 2023? Get in touch for a free, no obligation chat to discuss what options are available to you.

Get in touch for a free no obligation quote

      EXCELLENT  
   Based on 403 reviews 
    
 
 
 
   
 
 
      Posted on Google  
   
   Henry 
 6 October 2026
 
 
  We recently had a rear dormer completed by The Loft Room, which also involved lowering the ceilings throughout the first floor.

The efficiency and quality of the work carried out are the main reasons we’ve given five stars. We felt the administrative and communications side of the process could have been better, but ultimately the most important thing for us was the quality of the build, and in that respect we were extremely happy.

The team on site were excellent and always treated the house as our home rather than simply a building site. They were respectful, tidy and a pleasure to have around throughout the project.

Dragos has been a joy to work with and brought a huge amount of calm, experience and knowledge to the project. Lulian, on site, was the ultimate professional. Nothing was ever too much trouble, and the quality of his workmanship was excellent.

Overall, we’re really pleased with the end result and wouldn’t hesitate to recommend The Loft Room based on the quality of the work and the team we had on site.
  
 
     Posted on Google  
   
   Ruth Gibbons O'Brien 
 2 October 2026
 
 
  We are so happy with our new loft space and have been really impressed with The Loft Room from start to finish.

Communication throughout the project has been excellent. Marius and his team worked incredibly hard to meet deadlines while taking great care and pride in their work. Helen in the office, along with Marius, were always on hand to keep us updated on progress and talk us through the different choices and options available.

It was also really helpful having a clear contract in place detailing exactly what was included in the agreed costs. This made budgeting much easier and meant there were no unexpected or surprise costs along the way.

We can’t wait for the final touches to be completed so we can start enjoying our family’s new space. Thank you to the whole team for all your hard work — we’re really happy with the result!
  
 
     Posted on Google  
   
   Alex Moon 
 28 September 2026
 
 
  The loft room team were great. John was very respectful, and kept us informed on progress. Going the extra mile to make our new space amazing. They really managed to maximise the floor space to create a great sized master bed and en-suite.
  
 
     Posted on Google  
   
   Calum Millar 
 26 September 2026
 
 
  Recently had a dormer loft conversion completed by Ash and Alfie of The Loftroom.

From design all the way through to finishing the construction the team have been great. Quality of the work is outstanding, kept informed and updated all throughout the build, and always consulted about the specifics.

Highly recommend.
  
 
     Posted on Google  
   
   Chris Talbot 
 25 September 2026
 
 
  We are delighted with our new loft conversion by The Loft Room. The whole process went incredibly smoothly, from the planning stage all the way through to decorating.

A huge thank you to Vio, who led the team on our project. Vio and the team’s hard work and dedication has transformed our house. Vio kept everything running on track, maintained a high standard of work, and was always a pleasure to deal with. He and his team treated our home with respect and made sure the details were done right. And also, a special mention to all in the office whose excellent communication kept us in the loop throughout.

We would heartily recommend The Loft Room to anyone looking to do a loft conversion. Thanks guys!
  
 
     Posted on Google  
   
   Sarah Lister 
 22 September 2026
 
 
  We are delighted with our new loft space! Our team leader, Mihai, was fantastic and kept us informed about progress throughout. Everyone who came to work on the space was friendly and communicative, and gave us advice about what might work best.
Together, the team created a superb space with two bedrooms and a bathroom which are all spacious and finished to a very high standard. Mihai took time to make sure that everything was finished as we wanted it to be and went the extra mile to ensure downstairs where they had broken through was finished and integrated with the existing decor.
The office team at The Loft Room were very helpful in keeping us up to date and checking in to make sure that we were happy with how everything was going. It made such a difference using a company who do loft conversions day in day out as it meant that everything ran smoothly, the project was managed for us and the build ran to the time scale presented to us from the start.
We would highly recommend The Loft Room to anyone who is thinking about creating a new space.
  
 
     Posted on Google  
   
   Simon Newell 
 15 September 2026
 
 
  We honestly couldn't recommend The Loft Room highly enough.

Our relationship with them actually started around three years ago when they first came out to quote for our loft conversion. We weren't ready to go ahead at the time, but when we finally decided to push the button this year, The Loft Room were still the company we wanted to use – and we're incredibly pleased that we did.

This was a significant project, creating an entirely new top floor with two bedrooms and two en-suites, all while we continued living in the house as a large family.

From the very beginning, The Loft Room had a genuinely friendly, family-company feel. Everyone we dealt with seemed to care about the project and about making sure we were happy, and they were very conscious throughout that this wasn't just a building site – it was still our family home.

A very special mention has to go to Jamie and Jared, who carried out the build. They were absolutely fantastic. They worked incredibly hard, were friendly, considerate and easy to have around, and we built a really good relationship with them over the course of the project.

Jamie's workmanship and experience were obvious from the start. He constantly kept us involved, asked questions rather than making assumptions and made sure we were happy with how things were progressing. Communication was excellent throughout.

With any building project of this size there are inevitably going to be challenges, changes or occasional delays. For us, the important thing was how these were dealt with. Jamie was always upfront, explained what was happening and kept us updated, so there were never any nasty surprises. If something needed sorting, it was sorted.

That made a huge difference, particularly as I work from home and we were living through the entire build as a family. Jamie and Gared were incredibly respectful of that and did everything they could to minimise the disruption.

Most importantly, we absolutely love what they've created. Turning what was previously unused loft space into two fantastic bedrooms and two en-suites has completely transformed the house. The quality of the workmanship is excellent and, looking at the finished result, we feel we've had really good value for what was a major investment in our home.

It probably says everything about our experience that after months of having Jamie and Jared here every day, we actually miss having them around! I work from home, so it's genuinely strange not having the daily chats anymore.

A really positive experience from the first conversation three years ago right through to completion. We'd happily recommend The Loft Room to anyone considering a loft conversion.

A huge thank you to the whole team – and particularly Jamie and Jared – for everything you've done for us.
  
 
     Posted on Google  
   
   Ben Chadwick 
 22 August 2026
 
 
  We have just had our loft completed by the loft room. They were really easy to work with, took care of all the paperwork. They were great at communicating all the stages and their response time was excellent. Adrian was our builder and he was fantastic. Super thorough, reliable, fast, tidy and often gave us suggestions when we were unsure. The whole project was finished in about 6weeks! We wouldn’t hesitate to recommend The Loft Room to anyone. Many thanks!
  
 
     Posted on Google  
   
   Ken O'Neill 
 19 August 2026
 
 
  We are so happy we decided to go ahead with The Loft Room. Everyone we met from our initial consultation with Paul to Lulian and his team and Helen and Melissa in the office have been great. We were especially impressed with the hard work of Lulian and his team even through the heatwave. They were friendly and professional and always ready to answer any questions we had. Thanks to Lulian for suggesting bigger Velux windows - they are amazing! All the trades involved were great - we will definitely use them again in the future. The work was completed on time and we are really happy with it. We would certainly recommend The Loft Room.

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