Planning Applications | Sash Windows | Brighton

Planning Applications & Heritage Compliance

Planning Application – At Cavendish & Cole, we don’t just build and install exceptional timber sash windows and doors—we help our clients navigate the often complex world of planning applications, listed building consent, and conservation area approvals.

Expert support for listed buildings, conservation areas & period homes

If your property is listed or located within a designated conservation area, you may need formal approval to replace or even repair your windows and doors. We’re here to guide you through the process with experience, clarity, and care.

Do You Need Planning Permission for Timber Windows?

You may need consent if:

Your home is a Grade I, Grade II or Grade II listed building*
The property is located in a conservation area
You are making changes to the material, appearance, or glazing configuration of existing windows
You are replacing windows with non-like-for-like designs or materials

Even seemingly minor upgrades—like switching from single to double glazing, or installing Slimlite units—can require formal approval in heritage-sensitive settings.

How Cavendish & Cole Can Help

We’ve worked on listed and historic buildings throughout Sussex, Kent and Surrey, and we understand what conservation officers look for. When you work with us, we’ll support you through every step of the planning journey.

Our Planning Applications Support Includes:

Advice on whether you need consent
Guidance on appropriate materials and styles
Assistance preparing the necessary drawings and specifications
Production of heritage statements, if required
Liaison with architects, planning officers, and local authorities
Replication of original profiles and glazing bars for like-for-like applications
Supplying glazing that meets English Heritage and local authority standards

Whether you’re planning a full window replacement, a Slimlite double glazing upgrade, or restoration work on historic sash windows, we ensure the final result is both compliant and beautiful.

Approved Materials & Heritage-Friendly Options

We specialise in timber windows and doors that are often required or recommended in planning policies for historic and conservation-sensitive properties.

Our services include:

Accoya and hardwood timber joinery
Traditional putty glazing and slim-profile double glazed units
Accurate period mouldings and horn details
Matching existing window configurations exactly
Finishes in heritage paint colours with microporous coatings

We can also advise on ventilation upgrades, draught-proofing, and security enhancements that comply with planning regulations.

Why Planning Officers Trust Cavendish & Cole

Deep knowledge of heritage building standards
Experience working with English Heritage, architects, and local councils
Specialists in Georgian, Victorian, and Edwardian sash window styles
Proven track record of successful applications
Friendly, transparent advice with no pressure

Let Us Help You Get It Right the First Time

Planning applications and listed building consent can feel daunting—but it doesn’t have to be. With Cavendish & Cole, you’ll get honest guidance, expert joinery, and a smooth path to a compliant, elegant result that enhances your home and respects its history.

Not sure if your project needs planning approval?

Contact us today for straightforward advice or to book a site visit. We’ll assess your property, explain your options, and help you move forward with confidence.

Call us on 01273 282176 or email us here

Get in touch today for a free consultation. Let’s bring your vision to life—beautifully, traditionally, and made to last.