Planning permission and building regulations for windows?

Want to know what the Celsius installation process is? Here we'll help you find out about planning permissions and how we manufacture & install your windows.

Do I need planning permission for double or triple glazing?

Can you install double glazing or triple glazing onto a listed building?

Can you install double or triple glazing in a conservation area?

What can we expect from a Celsius Home Improvements installation?

How are Celsius Home Improvements windows manufactured?

Do I need planning permissions for double or triple glazing?

Planning Permissions

If you are planning a home improvement on your home, it would be prudent to contact your local authority to check whether you require planning permission. That said, you shouldn’t need planning permission for double or triple glazed windows as this is likely to have very little impact on your neighbours and neighbourhood.

There can be a few exceptions:

  • If your house is a listed building
  • If your house is in a conservation area
  • See below for more explanations on installing to listed buildings or in conservation areas.

    Adding bay windows to your house (if they were not there previously) classes as building an extension and, therefore, may be subject to planning permission. Celsius Home Improvements will handle any planning permission that may be required on your behalf.

    Can install double/triple glazing on a listed building?

    what you need to consider for listed buildings

    Listed buildings are protected by the Planning Act of 1990 which covers both the interior and exterior of the building.

    You need to apply for listed building consent when the following applies to you:

  • the existing windows are to be replaced with a new style of window
  • If the new windows are to have a different type of material than the existing ones
  • If you are changing the type of glazing used. For example going from single to double glazing
  • If you are planning on painting the new windows a different colour to the originals

  • If you proposing to use new materials for the windows then it is likely that the local authority would require samples of materials that you propose to use.

    Can you install double/triple glazing in conservation area?

    What you need to know about windows in conservation areas

    Similarly to listed buildings, houses that are located in a conservation area fall under the Planning (Listed Buildings and Conservation Areas) Act 1990. You will therefore require planning permission before you can install double or triple glazing to this type of property.

    Your local council will be able to give you advice on what you can and can’t install to a house in a conservation area. For example, you may have to replace the windows with a like-for-like replacement. Celsius Home Improvement can help you get the right guidance for your property should you live in a conservation area, giving you complete piece of mind that your home improvements are following the correct guidance of the Planning Act of 1990.

    What can we expect from a Celsius Home Improvements Installation?

    How we can make sure you get the windows that you want for your property

    Celsius Home Improvements - are renowned for their quality of work, they offer a 10 year guarantee with all of their products and work to very efficient time scales.

    All employees are directly employed which means that Celsius Home Improvements have complete control over the workmanship provided and you the piece of mind that you are not dealing with any sub-contractors.

    You will be assigned a designated project manager to help your job run as smoothly as possible causing you minimal disruption.

    Celsius Home Improvements have many, many happy customers who are more than happy to recommend us to their friends and family. If you would like to see some of these comments then please visit our Testimonials page.

    Step-by-step guide to dealing with Celsius Home Improvements

    Understanding each step of the process

    From starting with a request for a  Free no obligation quote - We would arrange a convenient time for one of our surveyors to visit you at your home.
    We then would carry out a detailed survey - this will include taking measurements of your existing windows and discussing your requirements for style, colours and glazing options. This will also take into account any special requirements needed for the Celsius Team to carry out an installation at your property.
    We then manufacture your windows at our purpose built factory with the exact specifications agreed with you.
    We then install your windows using our team of trained fitters employed by Celsius Home Improvements.
    We have project managers involved during the installation stage to make sure your windows are installed within the agreed timescales.
    Product Guarantees - To give you complete piece of mind, all our windows are guaranteed for 10 years.

    How are Celsius Home Improvements windows manufactured?

    Knowing exactly where your windows are coming from.

    Direct from the manufacturer

    All products that are installed and fitted by Celsius Home Improvements are manufactured in our purpose built 100,000 sq ft factory in Knowsley, Merseyside.

    The factory has got the latest machinery for manufacturing not only windows, but doors, bi-fold and sliding doors and conservatories too.

    Products are manufactured using both UPVc and Aluminium, giving you a great range of choice of products for your home.


    Questions about windows?

    In this section we will cover a whole range of frequently asked questions about window styles, materials we use, colours and energy efficiency

    Double glazing & triple glazing?

    Find out how double glazing and triple glazing works, their energy ratings and how improving your windows will help you save money and reduce sound pollution.

    How much will it cost?

    As there are so many options available with different styles, colour and materials to choose from, in this section we'll explain why we can't provide a "quick quote."

    Planning & building?

    Want to know what the Celsius installation process is? Here we'll help you find out about planning permissions and how we manufacture & install your windows.

    Compare the options

    If you're unsure on which style or type of window you want. In this section we'll give an explanation and comparison of the different types of products we offer.

    What areas do you cover?

    In this section we will let you know more about the areas we cover and where we have provided our products and services.

    If you do have any questions that you would like answering. Please call the Celsius Team on
    0151 545 1400



    Live the way you dreamTHE CELSIUS PROMISE


    Great prices - we welcome any comparison!


    10 Year no quibble guarantee


    All our products are installed by our in-house time-served professionals

    Friendly Staff

    Free advice and a friendly service with no pressure sales


    All products manufactured to the highest possible quality