Do You Need Planning Permission for a Juliet Balcony?

By installing a Juliet balcony, you can maximise natural light, improve ventilation, and add a modern architectural element.

But the most important thing to know before starting your project is whether you need planning permission to add one to your property.

Using this guide, you’ll learn when Juliet balcony planning permission is required, which building regulations you need to be aware of, and when you should seek professional advice before proceeding.

What Classes as a Juliet Balcony Under UK Planning Rules?

Juliet balconies are protective barriers fixed across full-height windows or doors. As such, planning applications treat them differently to traditional balconies with projecting platforms because it does not create an area that can be stepped onto.

Instead of adding extra space, a Juliet balcony remains within the building envelope – a key feature of planning criteria. Common applications of Juliet balconies include positioning them against full-height windows or inward-opening French doors.

For a more detailed explanation of what a Juliet balcony is, how it works, and the different styles available, check out our blog ‘What Is a Glass Juliet Balcony?’

Do Juliet Balconies Need Planning Permission?

Permitted development rights for homeowners usually mean that they can install Juliet balconies, provided the property and proposed installation meet certain criteria. It depends on the type of property and whether any planning restrictions already exist, and whether specific requirements apply.

When is Planning Permission Required?

There are several situations where planning permission, or other forms of consent, may be necessary:

• Listed buildings – Before work can begin on an alteration that affects a listed building’s character, Listed Building Consent will usually be required.
• Conservation areas – A conservation area’s appearance may be protected by additional planning controls.
• Flats and maisonettes – The permitted development rights that apply to houses do not apply to flats, so planning permission may be required.
• Properties with removed permitted development rights – There are some homes with planning conditions that restrict or remove permitted development rights, particularly in newer developments.

Things to Check Before You Install

You should always confirm whether your installation requires planning permission before ordering your Juliet balcony if you are unsure. The Government Planning Portal offers up-to-date guidance on planning rules and permitted development across England, while your local planning authority can advise you on the specific requirements for your property.

Checking the regulations before installation can help you avoid delays, unexpected costs, and potential enforcement action, so your project runs smoothly from beginning to end.

Do Juliet Balconies Need to Meet Building Regulations?

Building Regulations ensure that a Juliet balcony is safe once installed, while planning permission determines whether it can be installed. Building standards must be followed regardless of whether planning permission is required for your installation.

BS 6180 Safety Requirements

Juliet balconies are subject to BS 6180:2011, which specifies the performance requirements for barriers used in and around buildings. It specifies the horizontal loads that balcony barriers must be able to withstand, ensuring their safety, as well as covering minimum height requirements and toughened/laminate glass requirements. 

Choosing a system that meets these requirements is important. The safety and performance of a professionally engineered Juliet balcony are taken into consideration from the beginning.

Glass Specification

BS 6180:2011 outlines that all glazing for Juliet balconies should be manufactured from appropriate safety glazing, such as toughened or laminated safety glass, depending on the installation requirements. 

These materials are designed to offer increased strength and improved protection compared to standard glass, making them suitable for both residential and commercial applications. Unlike traditional annealed glass, which can break into long, sharp shards under impact, toughened glass crumbles into smaller, blunt pieces or, as is the case for laminated glass, remains stuck to the inner plastic to vastly reduce the risk of falling glass should the worst happen.

Find out more about what makes Juliet balconies safe and stylish in our blog.

Height and Installation Requirements

Juliet balcony structures must also comply with Building Regulations Part A and Part K. These regulations specify minimum guarding heights to help reduce the risk of falls from upper-floor openings. 

For Juliet balconies, a minimum guarding height of 1100mm is commonly required, measured from the finished floor level to the top of the guarding. Juliet balconies perform at their best not only when they are installed correctly, but also when they are securely fixed to the building structure in accordance with the relevant requirements.

High-quality, tested systems can provide long-term durability and reliable performance while ensuring compliance. With our range of Juliet balconies, you’ll find systems designed for a variety of property types, including side-mount systems and top-mount profiles.

When Do You Need to Speak to a Professional?

While many Juliet balcony installations are straightforward, some require specialist advice. By getting professional advice early, you can avoid costly delays, ensure compliance with building regulations, and make an informed decision.

You should consider speaking to a professional if:

• Your property is a listed building or located within a conservation area.
• You’re installing a Juliet balcony on a flat or maisonette, where planning rules may differ from those for houses.
• Your property has restricted or removed permitted development rights.
• The installation involves non-standard structural openings or alterations to the existing building.
• You’re unsure which fixing method or system is most appropriate for your project.

At The Glass Warehouse, we offer a wide range of high-quality Juliet balcony systems designed to suit a variety of property styles and installation requirements. Whether you’re planning a new build, renovation, or replacement project, our experienced team can help you choose the right solution and answer any questions you may have about planning, compliance, or installation.

If you’d like expert advice before getting started, contact our team today. We’ll be happy to discuss your project, recommend the most suitable Juliet balcony system for your needs, and help you move forward with confidence.

About the Author

My name is Adam Curtis, and I’m a director at The Glass Warehouse with a background in financial services and extensive experience in the glass industry. I lead our sales and marketing divisions, with a focus on making quality glass products easy to find and order online for customers across the UK.