A Guide To Windows In Listed Buildings

Key considerations for windows in listed and Grade II listed buildings

If you want to replace your windows in listed buildings or change your windows in a Grade II listed property, you must generally get permission or Listed Building Consent. Our first Heritage Series article outlines the key considerations, upgrade options, style alterations, glazing, and listed consent requirements below. Compiled by our team of experienced listed window craftsmen, this will help you navigate the options, regulations, and consent for listed windows in Yorkshire areas and other UK regions.

Should I repair or replace my Grade II listed property windows?

Although good building conservation practice is to retain the original features of your building wherever possible, window repair rather than replacement is often merely a short-term fix and equally expensive. As long as you can show the replacement will honour the historic legacy of your property, either in a replica or an upgraded, sympathetic look, a wiser replacement option will be consented. If  your window is beyond repair or modern and not an original feature of your property, replacement windows are recommended, and we can help with this.

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When can I replace windows in a listed building?

You will be granted Listed Building Consent if the windows are rotten, frames are leaking, are extremely draughty, show signs of water ingress or damage, and are beyond maintenance; replacement is your best option. Alternatively, if your windows were crafted in low-grade softwood like pine or a more modern material that was not original to your property, like UPVC, they are unsuitable for your property’s historical heritage.

Discuss Your Options

What is Listed Building Consent?

Listed building control is a planning control that protects buildings of special architectural or historic interest. In addition to any planning regulations, listed building status can demand planning permission for alterations or replacements where it wouldn’t ordinarily be required, such as a change of windows. Your local planning authority controls it and prevents the unrestricted demolition, alteration or extension of a listed building to retain its charm and character. Furthermore, it’s regulated according to Section 7 of the Planning (Listed Buildings and Conservation Areas) Act 1990 (LBCA Act), so you can be held to account for any unauthorised alterations. If you proceed with works without a listed building consent, you may be served a Listed Building Enforcement (LBE) notice.

Enforcement Notice Guide

How to get Listed Building Consent and why you need it - FAQs

  • Do I need permission for my Grade II replacement windows?

    When making changes to any windows or features on a listed building, Listed Building Consent is nearly always required, and you should obtain it before replacing your windows in a Grade II listed building or any listed property. It is a similar process to planning permission and is managed by your local council.

  • What is the first step with Listed Building Consent?

    The first step is either consulting with a listed windows specialist to inspect and advise on your windows or, if you know your windows are beyond repair, making a listed building consent Pre-Planning Application with your local council, the first part of the Listed Building Consent process. Although the pre-application enquiry is not mandatory, it enables your council to give you advice on what type of windows would be acceptable and speed up the listed building consent process. This pre-application service has a small cost, but most councils offer the following consent service free of charge.

    The next step is to follow their advice and speak with a listed building windows specialist and, usually, an architect who can provide you with detailed information to expedite the listed building consent application.

  • What do I need for my Listed Building Consent application?

    Within your Listed Building Consent application form, you need detailed drawings and images with reports outlining the state of your current windows or features and future intentions. Your listed building window company can advise you, or we recommend working with an architect.

    More details about what must be included in your listed building consent applications are:

    1. Heritage Statement: This should describe the building (the list description is a good starting point), set out what you want to do, and explain why you consider it appropriate to the character/significance of the listed building and how it has been designed to conserve that character/significance.
      – A means of identifying the location of the windows to be replaced (an elevation drawing or photo of the elevation, for example).
      – Scale drawings of the replacement windows – to include an elevation drawing, horizontal and vertical sections (at a scale of 1:10 or 1:5, as appropriate) and a glazing bar cross-section (at a scale of 1:1). The drawings shall make clear the Conservation and Design Guidance Note 3 – Window Repair and Replacement in Listed Buildings relationship of the window to the window opening (to show the proposed reveal).
    2. Confirmation of materials and finishes.
      – If a change in window style is proposed, existing and proposed scale elevation drawings of the building will also be required.
      – A report on the condition of the existing windows by an adequately qualified professional experienced with the repair of traditional windows, about why it is not possible to repair them in the form of a condition report (this is particularly important if the existing windows are historical) and which sets out the cost differences between repair and replacement.
      – Other items, including scale location and site block plans.
  • How much does Listed Building Consent cost?

    Listed building consent is usually free and a cost covered by your local council. However, the pre-application enquiry usually costs around £90-£100+Vat, payable to your local council. There may be further charges if further planning applications or building regulations follow.

  • How long does Listed Building Consent take?

    On average, most listed building consents take eight weeks to be determined.

  • What happens if I proceed without getting Listed Building Consent?

    Listed Building Consent is required for works of alteration or demolition to any listed building, and if you complete the work without consent, then any unauthorised work is a criminal offence. Undertaking renovations on a listed property without listed building content can be subject to enforcement action and prosecution.

Can I change the style of my windows in a listed building?

In some cases, you can alter the window style on your listed property. For instance, you could change a sash window in a Grade II listed home to a casement or mock sash window instead. Although replacements should usually be on a like-for-like basis, a change in window style is possible if the existing windows are unsuitable for use and the improvement upholds the property’s historic fabric. Also, should your windows not be original to your building, you may revert to the original style. For instance, if your Grade II listed property has UPVC windows, you are encouraged to upgrade to a timber-framed style.

UPVC Replacement Project

How can I make my Grade II listed windows more energy efficient?

You can upgrade your existing windows to be more energy-efficient through improved glazing, introducing heritage-designed slim frame secondary glazing and draught-proofing measures without consent. However, a full window replacement is the wiser choice if you wish to use far more optimised glazing solutions that will significantly reduce your energy bills. You may also improve your energy ratings by updating your window style or frame to vastly improve your heat loss and airflow through upgraded timber frames that incorporate draughtproof technology and specifically designed thermal glazing for listed properties; however, you will need consent for these upgrades.

Listed Buildings & Double Glazing

Can I install double glazing in a Grade II Listed property or any listed building?

There is scope for double glazing in listed buildings, which must be sought during Listed Building Consent, and it is usually granted under the following conditions:

  • The existing buildings are of no heritage value or beyond reasonable repair.
  • The installation of secondary glazing is not feasible due to the window design or condition.
  • Habitable rooms in the listed building are subject to constant external noise or present unacceptable conditions for the occupier.
  • Inserting traditionally detailed, double-glazed windows in instances where existing windows are inappropriate in material and design, have no historic value, and harm the building’s appearance overall will enhance the building.

Otherwise, the general rule for double glazing in listed buildings where they are of particular historical interest or the windows remain in an acceptable condition is that it is not usually appropriate.

Double Glazing For Grade II Guide

Can I replace my Grade II listed sash windows?

You can replace sash windows in a listed property, significantly improving its operation and eliminating draughts. For the best efficiency, and following your consent guidance (which we can help you with), restored sash windows on listed properties can also be fitted with slimmer profile, thermal-efficient double glazing precisely specified for your Grade I or Grade II listed property, draught-proofing technology and pretreated frames for a long-lasting, significant improvement.

Listed Windows

Grade II Listed Windows Replaced Before And After

Replacing Windows On A Grade II Listed Property - Before

BEFORE

Replacing Windows On Grade II Listed Properties - Atfter replacement

AFTER

How do I apply for replacement windows for my listed property?

To pursue a listed building consent application for replacement windows or double glazing, you must first submit a pre-application enquiry to your local council. They will thoroughly assess, advise you on further options or limitations, and instruct you on any additional listed building consents that may be required and the next steps. For instance, pre-application and advice in North Yorkshire can be found here. Alternatively, tap here to find further local area listed consent links below. However, for our clients, we will help you through every step, as should be the case for anyone working with an experienced listed building joinery manufacturer or architect.

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How to apply for listed building consent in your local area

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Can we help with your listed windows?

We have been manufacturing, installing, and finding solutions to meet listed building consent regulations for decades, and our distinguished craftsmen understand every intricacy along the process. Our helpful and knowledgeable showroom team can help you navigate the rules and permissions, and we can even source a trusted local architect to ensure a hassle-free process.

Brief us on your project, and let’s have an exploratory conversation with no obligation to buy: just expert, honest advice.

Date: 15 October 2024
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