Custom Design Loft

Bespoke loft conversions in Flats

Loft Conversion London specialise in high-quality custom Loft Conversions across London and the home counties. We have built numerous bespoke loft conversions in Flats which are fully tailored to the client’s personal requirements and preferences.


Types Of Lofts

Converting your Loft in a Flat

We offer a range of Loft Conversion types in Flats , which include, dormer, mansard, hip to gable, L-shaped and velux loft conversions. Our team of builders will transform your house, giving you more living space and thereby increasing the value of your property.

Loft Ideas

Our latest Loft Conversions

Browse through our latest loft conversions and extensions in Flats to get an idea of what our specialist Loft Conversion team can build for you.

Loft Conversion Process

Our step by step process for Loft Conversion in Flats

We try to keep the Loft Conversion process as simple as possible from conception to completion, always keeping you informed and involved in every step. Our process includes an initial survey and design followed by architectural drawings and structural calculations. Thereafter, we will quote based on the drawings. Once happy with our quote, our architects apply for planning permission and commence your building work and finally the completion of your new loft conversion. Our team is ready to discuss any aspect of the project in more detail at all times.


Creating More Space For You

Whether your family is growing, renting out a room in your property, or simply want a new study or office, a loft conversion is an ideal solution to maximise space in your house. This is a cost-effective alternative to moving and will increase the value of your property when you decide to sell in the future. No matter the project size, we will build you a loft that reflects your style and meets your lifestyle’s needs.


What can we do for your Property in in Flats?

If you would like to discuss the ways in which a Loft Conversion could enhance your in Flats home, call us on 020 3951 8426 or email to ask us any questions. For a free site survey and design consultation please fill out the form on the right and our team will get back to you as quickly as possible.


Are you looking to add a loft to your flat and make it more useful? You have come to the right place. Loft Conversion London has an in-house design and planning team to cater for your new loft conversion. From a simple Dormer, L-shaped to a Mansard and Velux, we are here to cater to all your needs.


Loft Conversion London promises to help you assess and examine the potential of converting your house into self-contained flats or developing a loft on top of your flat. Our surveyor will advise you on budget and timescale, while our architect will evaluate the flat's potential for a successful conversion. 

Add Space to your London Flat

We are seeing an enormous increase of interest from Londoners who live in flats and purpose built Maisonettes, who want to turn their loft spaces into creating an extra bedroom, bathroom or office, at the same time boosting the value of their flat.

A loft conversion in a flat is the most effective method of gaining that extra space, but be aware of the legal issues or complications that may arise. 

What exactly does 'share of freehold' mean when it comes to owning a Flat. 

Most Estate agents in London do a fantastic job at selling a flat at a higher price that comes with a share of freehold, however they do not explain to you all the pitfalls with regards to decision making or control of the property.  Even if you have a share of freehold, you'll still require the permission from other freeholders prior to converting the loft.

The landlord's consent.

The majority of leases allow for minor modifications to be made within the flat, they prohibit any major structural change without the approval from the owner. The freeholder is under no obligation to give consent , but would have an interest in preserving the structure of the flat and the loft conversion could affect this. So, they'd first need to perform their own due diligence of the drawings for your loft conversion and structural calculations using their own third-party surveyor.

The Ownership of the Loft

It's fair to say that the majority of leases don't mention the loft as being part of the flat, so you are not entitled to use it, not even to store the suitcases, let alone to convert it into a loft. The first step is to understand that you'll have to purchase the rights to the loft area from the property's freeholder. The freeholder is likely to view the importance that the loft space has to you and will be asking for a fair compensation. The freeholder isn't under any obligation to sell but like in most cases they will. All in all, that's why they're involved in freeholding.

Airspace ownership above Flats

Did you know that the airspace above and around your flat's roof might not even belong to you? You need to seek permission from the freeholder if you intend to undertake a dormer loft conversion. Even if your lease mentions ownership of the loft, it may not refer to the ownership of the airspace around the loft area.  This is not a deterrent to converting your loft, just something that you need to be weary of. The above issue does not apply to velux/roof light loft conversion. 

Roof maintenance in Flats

It is normal that the responsibility for maintaining the flat's roof is split between the leasees. If you are undertaking a loft conversion in your flat, it's imperative for you to seek freeholder's permission prior to starting any work on the roof. You will take full responsibility of the roof maintenance going forward and this will be reflected on the insurance and lease amendment. 


A loft conversion in a flat will increase the footprint of your property. With this in mind, the freeholder will take this consideration into the annual insurance premium, where say your flat may have occupied 25% of the whole footprint earlier and now after the loft conversion a new premium will be calculated in line with the size of your flat. 

Interference with other building services.

In many flats the loft area usually holds the communical cold water storage cistern serving several flats. Moreover, the flats with central heating often are served by a feed and expansion tank that is more likely to be situated in the loft area. The other flat owners will need access to these services for maintenance, so you need to keep this in mind and check with your freeholder of any limitations within the loft development. 

Converting a flat in the Loft can sound like a daunting and a long-winded process but our team is on hand to help and guide you from the start to the completion.

As one of London's Top Loft Conversion Company, we have unparalled experience and dedicated to our work, allowing our clients to convert their lofts legally and safely. 

Some useful links for you to read on before starting your Loft Conversion.

Loft Conversion Ideas to Choose From

Do you need planning permission for your Loft Conversion

Step by Step Guide to Loft Conversion


FAQ's about Loft Conversion answered

Do you have a question about Loft Conversions? We're here to help. Contact our team at Loft Conversion London

  • How can I find out if my Loft in in Flats can be Converted?

    The minimum height required for a Loft Conversion is 2.2m (from the floor to the highest point in your loft). If you do not have the required height, your ceilings can be lowered on your first floor.

  • How long does a Loft Conversion take to Complete?

    This depends on the size and type of Loft, most loft conversions take around 10-12 weeks. We can give you a more accurate estimation when we see your property.

  • How much does a Loft Conversion in in Flats Cost?

    Loft Conversion cost is determined by the size and type of the project, the features you would like, etc. Our architect will help you achieve the best use of your space within your budget. Most Lofts cost between £25,000 and £60,000.

  • Will I need to move out during the Loft Conversion?

    No - it's safe to carry on living in your house. Our team starts from the scaffolding before the stairs go in. We always try to limit the disruption during the construction process.

  • Do I need planning permission for a loft conversion in in Flats?

    Loft Conversions usually fall under the permitted development category therefore planning permission is not normally required. There are some exceptions like conservation areas, flats, or listed buildings. Our in-house surveyors can advise further on planning permission. For more info read our Planning Permission blog.

  • What is a party wall agreement and will I need one for a loft conversion?

    A party wall agreement is also known as PWA is required if you own semi-detached or terraced property. In simple words, if you are working within or near your neighbor’s boundary then you will need a party wall agreement in place. Click here for more info.

  • Does a loft conversion add value to my in Flats home?

    Yes - it will add from 15% to 25% upwards depending on the size, design, and type of Loft. Read more about adding value here.

  • Will my Loft Conversion be subject to Building regulations?

    Yes, all Loft conversions require building regulation approval from the local authority. These regulations are important to ensure the safety measures are in place and they set a protocol of construction and design to follow.

  • Can I use my own plans?

    Absolutely yes, we will work with you to achieve your dream new living space.

Types of loft conversions


Storage Ideas for your Loft Conversion

How will a custom Loft Conversion make a difference to your Flats home

Save Money on Moving Home

Save Money on Moving Home

Increase Value of Home

Increase Value of Home

Add Something New to your House

Add Something New to your House

Increase your House Living Space

Increase your House Living Space

Tell us about your Loft Conversion Requirements