Planning and Consent: A Guide

In most cases, replacing or refurbishing existing windows does not require planning permission. Standard like-for-like replacements are usually permitted.

However, if your property is located in a Conservation Area, an Area of Outstanding Natural Beauty or a World Heritage Site, different rules may apply. Certain changes to materials, glazing or design may need formal approval.

Before starting any work, we recommend contacting your local planning authority. 

Getting confirmation early helps avoid delays and ensures your project complies with current regulations.

Conservation areas are designated to protect the architectural character of a particular location. In these areas, replacement windows are usually expected to closely match the originals in terms of material, design and proportions.

If planning permission is required, it can take a few weeks to prepare and submit an application, depending on the information needed. Once validated, the local authority generally has up to eight weeks to issue a decision. Delays can occur if further details are requested.

Application costs and timescales vary depending on the scope and complexity of the project. It is always advisable to confirm requirements with your local planning authority before proceeding.

Listed buildings are subject to stricter controls to protect their historic character. 

Any changes to windows will usually require detailed documentation and formal listed building consent.

Preparing and submitting an application can take several weeks, depending on the level of detail required. Once submitted, the approval process can take several months, particularly if additional information or revisions are requested.

Alterations to listed properties often involve careful review and ongoing communication with the local authority. Taking a structured and informed approach helps avoid delays and improves the chances of approval.