Your Guide to Listed Buildings and New Windows

Most homeowners know that windows do a lot more than simply keep the weather outside, and the warmth inside. Windows give your house character, and some offer an incredible aesthetic appeal. However, if your house is listed, then you should always seek advice before making changes and installing new windows.

While sealing existing timber windows, replacing single glazing and installing new ironmongery can be permitted, installing new windows completely often requires listed building consent from your local authority.

Why Is Installing New Windows in Listed Buildings So Complex?

Up until the mid-1800s, window glass was an expensive product, usually constructed by hand. The craftsmanship that went into these pieces of home design means that listed windows serve a historical importance within most societies.

The survival of rare and old materials, along with detailed designs could mean that your windows are uniquely worthy of preservation.

Regardless of the grade, all listed buildings in the UK are covered by the same level of statutory protection. The more you want to change in your building, the greater the amount of planning permission you will need. For instance, though double glazing can sometimes be installed with consent, replacing windows completely can be problematic.

The Choices Available in Repairing and Replacing Windows

In most circumstances, owners of listed buildings will find that public bodies such as Historic England, and the Conservation Office will prefer for windows to be repaired, rather than replaced. Repairing windows makes it easier to maintain the unique character and façade of a building. However, this doesn’t mean that accessing consent for a replacement is impossible. Many conservation officers are willing to work alongside owners of listed properties to help solve significant problems, and ensure that properties remain fit for purpose.

As authenticity is often essential from a planning perspective, some officials may recommend using sympathetic design techniques that help to give listed buildings the value of new windows, while maintaining their unique character and charm. For instance, putty might be used to replicate the traditional appearance of older windows, and slim-fit double glazing can be used to mimic the optics of older designs.

Can Non-Historic Windows Be Replaced?

For some owners of listed buildings, there may be windows on your property that do not contribute to the historical appeal of your home. In some cases, it is possible to replace these windows with new designs that match the historic impact of the property. Glazing techniques such as hand-drawn and machine-drawn glass can be effective at replicating the appearance of older windows, allowing homeowners to achieve a more detailed design.

Keep the Cold Out, and The Value In

Remember, if you own a listed building, there’s no reason why you need to suffer with cold. Carefully installed timber frames can maintain the heritage of your property, without damaging energy efficiency. Those timber windows can still use the latest innovations in the glazing industry, while incorporating a unique, organic style. Secondary glazing may even be used to supplement the performance of a window when the replacement of a historical design is prohibited.