Renovating a Listed Building: A Practical Guide

There are around 400,000 listed buildings in England, and a lot of them are in London. If you’ve fallen for a house with original features, there’s a good chance it’s one of them.

Renovating a listed building isn’t impossible. It just needs more care, more paperwork and more time. Here’s what to expect.

What listing means

Listed buildings are graded:

• Grade I: buildings of exceptional, often national, interest.
• Grade II*: particularly important buildings of more than special interest.
• Grade II: buildings of special interest. Most listed homes are Grade II.

Listing covers the whole building, inside and out, not just the front. It can also cover things in its grounds, like walls, railings or a garden fountain. You can check any address on the National Heritage List for England.

When you need consent

For a listed building, you need listed building consent for any work that affects its character. That includes a lot of internal work: removing walls, changing doors, fireplaces, cornicing or staircases, even replacing windows. Doing it without consent is a criminal offence, and the council can make you put it back.

Being in a conservation area adds another layer. Changes to the outside, such as windows, doors and rooflights, may need permission even if the house itself isn’t listed.

Check before you buy

If you’re buying, find out first whether the building is listed or in a conservation area. Look at what’s been approved for it before, and what hasn’t. The features you love may be the ones you’re not allowed to touch. Equally, the draughty single glazing may be protected too.

Talk to the conservation officer early

Every council has a conservation officer. Speak to them before you finalise the design, not after. Explain what you want to change and why. A clear, well-reasoned case gets much further than a surprise application.

On a cottage in Hampstead, we worked with the conservation team to replace an angled skylight with a flat, frameless one that let in far more light. We also reinstated a mosaic glass front door in keeping with the house. You can see that project in our Hampstead cottage case study.

Writing a heritage statement

Most applications for a listed building need a heritage statement. It explains what’s special about the building and how your changes will affect it. There’s no set format, but a good one covers four things:

1. The building and its setting. Its age, style, materials and main features, and the character of the street.
2. Its significance. What it contributes to the area, and which features matter most.
3. Your design. What you’re proposing and why, stated plainly. “To create step-free access”, not a personal story.
4. The impact. What will be visible, what original fabric will be lost or changed, and how the design preserves or enhances the building.

Use the right terms. Say “sash window”, not “pretty old window”.

Who you’ll need

Depending on the work, a heritage consultant, a conservation architect and a structural engineer. We coordinate them as part of our interior architecture service, and we can handle the applications.

It’s worth it

Done well, a listed building renovation gives you something new houses can’t: real history, with a home that works for how you live now. Our Grade II listed manor house in Cornwall is a good example.

Permissions add months, so allow for them. Our project timeline guide explains how.

Tell us about your project. The first conversation is free, and we can usually meet within a few days. It’s as much about us checking we’re the right studio for your project as you checking us.