Cost of Orangery – A Complete Guide for Homeowners

Adding an orangery is one of the most stylish ways to expand your home. It offers extra living space, plenty of natural light, and year-round comfort. But before starting your project, it is essential to understand the cost of an orangery and the factors that influence it.

This guide covers typical price ranges, what affects costs, and how to plan your budget effectively.

A wonderful Hardwood Garden Room becomes a sanctuary where you can get away from daily hassles

Average Cost of an Orangery in the UK

The cost of an orangery can vary from around £20,000 for smaller, simpler designs to £80,000 or more for large, bespoke projects. On average, most homeowners spend between £30,000 and £50,000.

Prices will depend on size, materials, and the complexity of the design. A modest orangery extension cost for a dining room or snug is far lower than a fully fitted luxury kitchen orangery.

A Traditional Hardwood Orangery Graces this Listed Presbytery

Cost of Orangery per m²

For budgeting, it helps to calculate the price per square metre. In the UK, orangeries typically range from £2,000 to £3,500 per m². This includes materials, labour, glazing, and finishes.

Small builds with standard specifications fall at the lower end. High-end hardwood frames, premium glazing, and bespoke joinery will push the cost to the higher end of the scale.

Key Factors That Influence Orangery Costs

1. Size of the Orangery

Larger spaces require more materials, more labour, and often more structural work. Doubling the size of your orangery doesn’t just double the cost — it can also affect heating, flooring, and furniture budgets.

2. Materials

The choice of frame, glazing, and roofing impacts the budget significantly.

• uPVC – affordable but less traditional in appearance.

• Aluminium – slim profiles, strong, and modern-looking.

• Hardwood – premium look and feel, often used in luxury orangeries, with a higher price point.

3. Roof Style

A flat roof with a roof lantern is a hallmark of orangeries. The quality of this feature, the type of glass used, and insulation levels will affect the price.

4. Glazing

Standard double glazing is the baseline, but many homeowners choose energy-efficient triple glazing or specialist solar-control glass to improve comfort.

5. Foundations and Site Work

Ground conditions may require extra work, such as deep foundations or drainage solutions. This can increase costs, especially if the build site is on uneven or unstable ground.

6. Interior Finish

Flooring, lighting, heating, and built-in furniture can all influence the final figure. Underfloor heating, premium flooring, and bespoke cabinetry will push the total higher.

A hardwood orangery at the end of our customer's garden

How Much Does an Orangery Cost to Maintain?

Beyond construction, ongoing costs include heating, cleaning, and occasional maintenance. Hardwood frames need periodic painting or staining, while aluminium and uPVC require less upkeep.

Orangery vs Conservatory Cost

An orangery generally costs more than a conservatory of the same size. This is due to the additional brickwork, solid walls, and more substantial roof structure. However, orangeries often add more value to the property and offer better insulation for year-round use.

If you are deciding between the two, consider whether the extra investment will suit your lifestyle and long-term plans for the home.

Orangery vs Extension Cost

Compared to a standard brick-built extension, an orangery can be more cost-effective. This is especially true when you factor in the amount of natural light and the aesthetic appeal. A traditional extension may provide more privacy but lacks the airy, open feeling of an orangery.

Planning Your Budget for an Orangery

1. Set a Clear Budget

Have a realistic budget before starting. Factor in the full cost — from design and materials to interior finishes.

2. Get Detailed Quotes

Always request a detailed breakdown from your installer. This should cover everything from groundwork to roofing and internal fittings.

3. Allow for Contingency

Unexpected expenses can arise. Setting aside 10–15% of your budget for contingencies can prevent delays and stress.

A small orangery attached to a country home

Maximising Value from Your Orangery

Investing in quality materials and skilled installation pays off. A well-built orangery can last decades, add significant value to your home, and provide a space you enjoy daily.

Working with a specialist like Glass House Architecture ensures that the design matches your property and that every detail — from glazing to joinery — is handled with care.

Cost Examples

While prices vary, here are a few examples based on recent UK projects:

• Small Orangery (3m x 3m) – £20,000 to £25,000

• Medium Orangery (4m x 4m) – £30,000 to £40,000

• Large Orangery (6m x 4m) – £50,000+

Adding features like bifold doors, specialist glazing, or underfloor heating will increase these figures.

Conclusion

The cost of an orangery depends on size, materials, design complexity, and finishing touches. Whether you want a modest garden room or a grand entertaining space, careful planning ensures you get the best value.

By understanding the typical orangery costs and where your money goes, you can make informed choices that balance budget and quality.