Juliet Balcony Costs in the UK: What to Expect

Juliet balconies and traditional balconies can both enhance a property’s lighting, openness, and connection to the outdoors. In structural terms, they are very different additions.

Juliet balconies provide guarding for an upper-floor opening without requiring an external platform, while traditional balconies extend beyond the building to create outdoor living spaces. This difference can have a significant impact on everything from cost and installation to planning requirements and how you’ll ultimately use the space.

Whether you’re considering a Juliet balcony or a walkout balcony for your home, here’s how to decide which solution suits your home, available space, and budget best.

How Much Does a Juliet Balcony Cost?

For the balcony system itself, a typical UK budget can range from a few hundred pounds for a straightforward system to £1,300 or more for oversized glass configurations.

Express Toughening offers several Juliet balcony configurations, including top-mount, side-mount and offset circular fitting systems, alongside oversized options for wider openings.

The table below provides a useful starting point when setting your budget.

Type	Typical Specification	Typical Supply Cost	What’s Included?
Standard glass Juliet balcony	Toughened laminated safety glass with Side Mount or Top Mount balcony profiles or offset circular fittings	£300–£900+	Glass and appropriate balcony hardware, depending on system
Oversized/ bespoke glass Juliet balcony	Wide-span made-to-measure glass with appropriate profiles, railings or fittings	£1,300+	Bespoke glass and system components according to specification

These figures should be treated as budgeting guides rather than fixed quotations. Width, glass specification, mounting method, finish and individual project requirements can all change the final glass Juliet balcony price.

Installation is normally an additional cost. As a broad guide, professional installation can add approximately £250–£850 depending on access and complexity.

If you don’t already have full-height French doors or another suitable opening, you should budget separately for creating one. For current product pricing based on your required width and configuration, explore our glass Juliet balcony range.

What Affects the Price of a Juliet Balcony?

If two Juliet balconies appear similar but have noticeably different prices, there is usually more going on than appearance alone.

Glass specification, width, fixing system and the structure you’re fixing into can all influence the final cost of a Juliet balcony.

Glass Thickness and Specification

Glass is one of the most important elements affecting the overall price.

A relatively straightforward opening may be suitable for a different glass specification from a significantly wider balcony. As panel dimensions and system requirements increase, thicker or laminated glass may be specified, increasing the amount of material and manufacturing involved.

Toughened glass undergoes controlled heat treatment to increase its strength compared with ordinary annealed glass.

Toughened laminated glass combines safety glass with an interlayer that helps retain the glass following breakage, providing different post-breakage characteristics. Laminated constructions also involve additional manufacturing and materials, which can increase the price.

This becomes particularly relevant on oversized Juliet balconies, where the glass and complete fixing system need to be appropriately specified for the wider span.

If you’re comparing specifications, our guide to choosing between toughened and laminated glass explains the differences in more detail.

Fixing Methods: Profiles vs Discreet Fittings

The fixing system can make a considerable difference to both appearance and price.

Profile-based systems use aluminium or other structural profiles to secure the glass around the opening. They provide a clean contemporary appearance and are available in different mounting configurations.

The Glass Warehouse offers options including top-mount and side-mount Juliet balcony systems, allowing the profiles to be positioned according to the opening and intended finish.

Another option is our offset circular fitting system. Rather than surrounding the sides of the glass with larger profiles, circular fittings create a more minimal appearance that leaves more of the glass exposed.

These choices aren’t purely about price. The fixing method has a major influence on the finished appearance, so it’s worth considering how visible you want the hardware to be when comparing systems.

Size and Wall Type

As you would expect, wider Juliet balconies generally cost more.

A larger opening requires a larger glass panel or system, and wider spans can change the required glass and fixing specification. Oversized Juliet balconies can therefore cost considerably more than systems designed for conventional French-door openings.

The structure surrounding the opening can also affect installation costs.

Fixing into suitable solid masonry can present different requirements from cavity-wall or timber-frame construction. The installer needs to establish that the supporting structure and proposed fixings are suitable for the system.

This can affect the amount of preparation, specialist fixings and labour required.

Our guide to UK safety regulations for glass balustrades provides further information about the safety considerations that can influence the specification of a glass guarding system.

Installation and Access Costs

When comparing Juliet balcony installation costs, don’t look at the price of the glass and hardware alone.

Professional installation commonly adds several hundred pounds to the overall project, with current UK estimates typically around £250–£850 for a Juliet balcony installation. The actual quotation will depend heavily on the property and accessibility.

An installer may need to consider:

• The floor level of the opening
• Ease of external access
• Whether scaffolding or other access equipment is required
• The wall construction
• Balcony width and weight
• The chosen fixing system
• Any preparation required before fitting

A straightforward installation with suitable access will naturally be less expensive than an upper-floor installation requiring additional access equipment or preparation.

More complicated projects can also take longer, increasing labour costs.

Our guide to installing a Juliet balcony provides a broader overview of what is involved in the installation process.

The Cost Most People Forget: Converting a Window to French Doors

This is one of the easiest expenses to overlook when setting a Juliet balcony budget.

The price of the balcony itself doesn’t normally include creating the opening behind it.

If your property already has suitable full-height French doors, this may not be relevant. However, if there’s currently a conventional window where you want the Juliet balcony, converting that opening is effectively the first stage of the wider project.

The final price can include more than the doors themselves. Depending on the property, you may need to budget for:

• New French doors and glazing
• Removal of the existing window
• Alterations to the opening
• A new or modified lintel where structurally required
• Building work
• Internal plastering and making good
• External finishing
• Decoration
• Labour and waste removal

This can mean the French-door conversion costs more than the Juliet balcony itself.

Our guide to converting a window into glass doors explains the door side of the project in more detail.

You should also establish whether permission or consent is required before altering the opening. Rather than repeating that subject here, see our separate guide to planning permission for a Juliet balcony for further information.

Regional Cost Variation

Where you live can also affect the final installation price.

Material prices may be relatively consistent nationally, but labour and access costs vary considerably. London and the South East will often sit towards the higher end of typical UK installation ranges due to higher labour and operating costs.

A Juliet balcony cost in London can therefore be higher than an equivalent installation elsewhere in the country, even when the glass and hardware specifications are identical.

For this reason, online cost guides are best used to establish an initial budget. A quotation based on your actual property will provide a much more accurate figure.

 

Juliet Balcony vs Walkout Balcony: Cost Comparison

If you’re choosing between a Juliet balcony and a traditional projecting balcony, cost is one of the biggest differences.

A Juliet balcony doesn’t require the construction of a substantial external platform, which can make it considerably more affordable.

As a broad comparison:

Option	Typical Cost	Main Cost Considerations
Juliet balcony system	Around £300–£1,500+ supply only	Glass or metal barrier, width, specification and fixings
Traditional walkout balcony	Often £5,000–£20,000+, potentially considerably more	Structural platform, engineering, labour, waterproofing, guarding and other building work

The difference doesn’t mean a Juliet balcony is simply a cheaper substitute.

If your aim is to replace a conventional upper-floor window with full-height doors, introduce significantly more natural light and open up the view, a Juliet balcony can completely change how the existing room feels without requiring a new external platform.

If you’re deciding which approach better suits your property and budget, read our Juliet Balconies vs Traditional Balconies guide.

Getting an Accurate Juliet Balcony Quote

Online price ranges are useful for setting a budget, but an accurate quote should be based on the actual dimensions and specifications of your project.

Before comparing quotations, make sure you understand what each price includes.

Depending on the project, your quotation should clearly identify:

• Glass type and thickness
• Balcony dimensions
• Fixing or profile system
• Mounting configuration
• Hardware and finishes
• Bespoke processing
• Delivery
• Installation, if applicable
• Access equipment, if applicable
• Any required structural assessment or calculations

This makes it much easier to compare like-for-like quotations rather than choosing what initially appears to be the cheapest option.

If you’re looking for a complete glass-and-hardware option, you can also explore our toughened and laminated Juliet balcony with fittings.

For bespoke sizing, oversized Juliet balconies or help selecting the most appropriate system for your opening, get in touch for a quote, and our team can discuss your requirements.

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.