Replacing windows in a conservation area – a complete guide
Windows can have a significant impact on the energy efficiency and security of a home, so wanting to upgrade them is understandable. However, when living in a conservation area this process is not as straightforward, as you may need planning permission.
If you’re struggling with the process, don’t worry! We’ve put together a guide to make the window replacement process feel easier.
What is a conservation area?
A conservation area is defined as an area of special architectural or historic interest. These areas are placed under protection to help preserve their historical and architectural elements.
The Local Planning Authority (LPA) keeps a record of the conservation areas in their localities and sets strict planning laws for these areas, so the buildings can maintain their character and appearance.
What is a listed building?
A listed building is a building of historical or architectural interest. A listed building is classified as ‘listed’ based upon its own merit, therefore they are not always found in conservation areas and not every property in a conservation area is classed as a listed building.
Listed buildings are classified as either:
- Grade I – of exceptional interest
- Grade II* – particularly important buildings of more than special interest
- Grade II – of special interest, warranting every effort to preserve them
Why do we need conservation areas and listed buildings?
Listed buildings and conservation areas are needed to protect the historical and architectural elements of our towns, so the history of these places isn’t lost over time. Although the area won’t remain the same as it did originally, we can help preserve them to give the feeling of stepping back in time.
Having these conservation areas ensures new properties and renovations are only carried out if they match the aesthetic of the existing area. For example, if you want to preserve the character of a sixteenth century town, you wouldn’t build a modern property that would disrupt the visual aesthetic. The same goes for modernising existing buildings, as this could impact the charm of the area.
Why might you need new windows?
Typically in conservation areas, windows are rarely updated, so they lack the qualities of modern windows.
Modern windows can improve the energy efficiency and security of a property and can reduce the level of outside noise entering a home. Most historical buildings will have single glazing, which is thin and not always thermally efficient. Older windows were often hand made from timber, and over time may have lost their insulation qualities and strength.
What planning permission might you need?
In some cases, you don’t need planning permission to replace windows in conservation areas, as long as you replace them with those that look similar. However, each LPA has different rules, so it’s important to check with them before you begin anything as you could be fined and may need to carry out extra work to meet the requirements.
Most home improvements are covered by permitted development rights (PDRs), but often these do not apply to buildings in conservation areas. The LPA can issue an Article 4 direction, which removes the permitted development rights from any area. This doesn’t mean you won’t be able to replace your windows, you will just have to apply for planning permission first.
How can modern improvements affect the performance of your windows?
Frames
Some LPAs allow PVCu windows to be installed, but often timber windows work the best for achieving a more authentic look.
Our timber casement windows offer modern performance with traditional aesthetics. Wood is a natural insulator, with very low thermal conductivity. Therefore, timber windows are an ideal choice for listed buildings and conservation areas as they look the part whilst preventing heat leaving the property.
In addition to being energy efficient, wood is a strong and durable material, improving the security of the window. For added peace of mind, our casement windows are fitted with multi-point locking systems and are internally beaded.
Glass
Installing double glazing is the most effective window improvement you can make, as it will instantly improve the energy efficiency of your home. Our timber casement windows are filled with either argon or krypton for high thermal performance.
For properties with stricter guidelines, it is still worth upgrading your single glazing for a more modern performance. At Nine Zero, we offer a heritage range with single glazed 4mm float glass, 8.8mm acoustic glass, and slimline 14mm glass alternatives. Our FINEO vacuum glazing is perfect for heritage buildings as its thinness (from 6mm) makes it fit specific requirements.
Why Nine Zero?
As timber window suppliers, sustainability is at the front of our business. We source all our timber from responsible suppliers certified by the Forest Stewardship Council (FSC), as well as recycling our timber waste on surrounding farms.
If you’re looking for a listed building window replacement or live in a conservation area, the team at Nine Zero are here to help. Call us on 0208 397 8636 or email us at hello@nine-zero.co.uk.