Listed Buildings are extraordinary properties with a rich past that have been deemed in need of protection. The properties that fall into this category of listed building are considered to be of national importance and typically range from the 17th century right up to the early 20th century. Known for its intellectual and artistic connections, the Hampstead area has some of the richest architectural history in London, featuring Georgian houses, Victorian terraces, Arts and Crafts homes, and even pubs that qualify as listed buildings. Investing in one of these beautiful historical listed buildings is a great way to enjoy a home with deep character and features you might not find elsewhere.

Before you start to work on a property or Hampstead listed building, it is essential to gain the right consent from Hampstead’s LPA (local planning authority). Here is everything you need to know in order to file a successful application and win Listed Building Consent, and planning permission if you find that you need it for your listed building:

What are listed buildings?

Firstly, it is essential to understand whether your property is indeed a Listed Building and what features define it as such. According to the Historic Buildings and Monuments Commission, Listed buildings and architectural structures are so called because of their architectural interest, association with historical events or people, or historical importance.

According to the Planning (Listed Buildings and Conservation Areas) Act of 1990, the Listed Buildings across the UK fall within three categories:

• Grade I – buildings and other architectural structures that are considered to be of exceptional interest. These are best-protected buildings and include St Paul’s Cathedral and the Palace of Westminster.
• Grade II* – buildings and other architectural structures that are of particular importance, including the Barbican.
• Grade II – these are buildings of particular importance or special interest. This category includes the Abbey Road Studios in London as well as over 400,000 buildings and structures across the UK.

Altering a listed building: What you need to know

Due to their beauty, character, and historical importance, listed buildings are protected against alterations, demolitions, and extensions. According to the Planning (Listed Buildings and Conservation Areas) Act of 1990, you will need to obtain your LPA permissions if you wish to modify your listed building.

It’s crucial to note that Listed Building Consent is required for external as well as for internal alterations to the existing fabric of the listed building.

While it is possible to gain the necessary permission to build or renovate a listed building, the process can be tricky and lengthy. It is always recommended to seek professional help to navigate the challenges of your listed building application. That’s where XUL can come in and help.

Start by checking whether your property qualifies as a listed building through the Historic England website. Below, you can find an overview of what you need to submit as part of your listed building application.

Extending a Grade II Listed property

Extending a Grade II listed building can be challenging, but certain factors can play in your favor. Indeed, nobody, including the LPA, wishes for a listed building to fall into ruin and lose its beauty. So, when planned appropriately, your project can actually breathe new life into a listed building, enhancing the landscape and preserving a historical site.

According to the National Heritage List for England (NHLE), urban renewal of listed buildings might be considered beneficial—but only if your project enhances the property and preserves its original character.

Ultimately, when submitting your application for a listed building, you must meet all the guidelines and requirements set by the LPA. Finding professional help is often necessary—but this guide is a great starting point!

Applying to extend a Grade II property: Requirements and process

Submitting an application to extend your Grade II Listed Building in Hampstead should be done with your local LPA. Here are some of the requirements you can’t fail to have.

• A description of the building – start by digging into the history of your property and crafting a description of its historical and architectural importance. This will also help you show the LPA that you are fully aware of your proposal’s impact. This can be done as part of a Heritage Statement.
• A formal application form – you can find a listed building application form at your LPA.
• Existing plans and elevations of the current property – this should clearly show the structure of the unaltered building.
• Proposed plans and elevations and a description of your project – describing your proposed extension, design principles and any materials used.

You should also ensure to add any other relevant documents, including a Heritage Impact Assessment.

Heritage Impact Assessment: Factors to consider for a successful application

When submitting your application, having a suitable Heritage Impact assessment on your side can be your best ally. Indeed, it does not only show the LPA that you have fully understood the impact of your project, but that you will also carry it out mindfully and respectfully. Here are a few important aspects to make sure to include:

Include a DAS

Including a Design and Access Statement (DAS) Report in your listed building application gives the LPA a useful background to consider before accepting your project. The DAS should include the building’s history, landscaping, previous developments, and any historical significance.

List materials used and be clear on your schedule

When preserving the historic character of a listed building, it’s not just about developing a suitable design. The materials you use and the areas affected by your modifications are also crucial factors that the LPA will consider for your listed building.

Contemporary additions to a listed building can create a beautiful juxtaposition of old and new, and can generate amazing spaces and designs, but are often more challenging to gain approval for than alterations that ‘blend in’. Typical internal contemporary upgrading works to install modern services, kitchens, and bathrooms are generally regarded as necessary and are likely to be less contentious for a listed building.

Your project’s reversibility

The LPA is also likely to consider the reversibility of your proposed alterations. For example, if you fit new fixtures, how easy is it to restore the listed building’s original character? It is crucial that, through your listed building application, you can communicate that you understand your home is likely to outlast you, and its character needs to be preserved for future generations.

How will your project preserve the building’s character?

As we have seen, the LPA is on your side if you wish to invest in a modification or extension project that brings new life into a listed building. However, the LPA will primarily be concerned with preserving the importance and character of the listed building. You should demonstrate that its original design and materials will be maintained in your listed building project.

You can also accentuate your project’s positives, listing the benefits that the regeneration of an old listed building can bring to the local economy, landscape, and attractiveness.

Based in north London, XUL Architecture is well-positioned to guide you through the complicated process of gaining planning permission for a Hampstead listed building. We have extensive experience working in the Hampstead Garden Suburb and know what it takes to retain the charm of these listed buildings while bringing them into the 21st century.

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