Lantern Roof
The central glazed lantern is the signature orangery feature. It brings daylight deep into the room while the surrounding solid roof keeps the space more settled and architectural than a fully glazed roof.
Established 1973 • Over 2,000 Projects Completed
Bespoke Orangeries
Traditional Elegance, Modern Comfort
Individually designed orangeries with lantern roofs, solid perimeter insulation and optional brick pillars. A permanent extension that feels like part of your home from day one.
Call 01243 538999. David, our digital assistant, can take a few details so the right Room Outside specialist follows up personally.
About Our Orangeries
Get Free Orangery Quote
What Makes a Room Outside Orangery Different?
An orangery is a premium glass extension that combines the light of a conservatory with the permanence of a more traditional extension. The defining feature is a solid insulated perimeter roof with a central glazed lantern, giving overhead daylight while improving warmth, acoustics and the sense that the room belongs to the house.
Every Room Outside orangery is individually designed around your property, with options including brick or rendered pillars, internal pelmet lighting, wide sliding or bi-fold doors and New Generation Glass. If you are still comparing extension types, you can also review our bespoke conservatories and Glassbox extensions.
Room Outside has been designing and installing orangeries across the South of England since 1973. That experience shapes the planning advice, structural detailing, material specification and aftercare you receive.
A more built-in architectural feel
Central lantern roof for overhead daylight
Solid perimeter roof for better insulation
Optional brick or rendered pillars
Planning and Building Regulations support
Bespoke to your home, style and budget
Prices from£35,000
What Sets Us Apart
Why Room Outside?
Four things premium homeowners value: considered design, lantern roof detailing, clear guarantees and proper planning support.
Individual Design
Every orangery starts with a home visit and a blank sheet. We design around your architecture, proportions and how you want to use the space.
Lantern Roof Expertise
The lantern is sized and specified around the room, balancing overhead light with thermal performance, sightlines and the roof’s architectural weight.
Insured Guarantees
Depending on product and location, up to a 10-year structural guarantee may apply, with separate warranties for glazing, roofing and components.
Planning Expertise
We assess Permitted Development, planning applications where required and Building Regulations routes so there are fewer surprises later.
Our Work
Orangery Projects & Inspiration
Recent orangery projects across Sussex, Surrey, Hampshire, Kent and London. Use the arrows to scroll through the gallery.
Design Options
Orangery Features and Options
Every orangery is designed around the property. These are the details that shape how it looks, performs and feels day to day.
Solid Perimeter Roof
The insulated perimeter improves thermal performance, adds ceiling depth for lighting and helps the orangery feel like a permanent part of the home.
Brick or Rendered Pillars
Pillars add structure and visual weight. They can be matched to existing brickwork or rendered to suit the architecture of the house.
Internal Pelmet Lighting
Concealed lighting within the pelmet creates a warmer evening mood and gives a clean transition between the solid perimeter and the lantern roof.
New Generation Glass
New Generation Glass can help manage solar gain while preserving natural light, making the room easier to use through more of the year.
Sliding or Bi-Fold Doors
Wide-opening door systems connect the orangery to the garden and can make the room work as a kitchen-dining space, sitting room or entertaining area.
Material Choices
Timber, Aluminium or Premium UPVC?
The material you choose affects how your orangery looks, performs and ages. We specify around the building, maintenance expectations and budget.
Hardwood Timber
Timber gives warmth, depth and craftsmanship, making it especially strong for period homes, country properties and heritage settings. With proper maintenance, hardwood can last 50 years or more.
Best for character homesNatural warmthLong lifespanAluminium
Aluminium provides slim frames, strong spans and contemporary sightlines. Thermally broken profiles, powder-coated finishes and low maintenance make it a durable modern option.
Slimmest framesLow maintenanceModern lookPremium UPVC
Premium UPVC offers strong practicality, good thermal performance and easy ownership. Woodgrain and flush-style finishes can give a more refined appearance than older UPVC systems.
Practical choiceGood insulationEasy ownershipComfort specification: insulation plus better glass
The best orangery specification combines solid perimeter insulation, carefully chosen frames and New Generation Glass. This helps reduce unwanted heat gain in summer, retain warmth in winter and support a more consistent living space.
Transparent Pricing
Bespoke Orangery Cost Guide
Indicative installed ranges. Final costs depend on project size, access, material, glazing, planning and site conditions.
| Size/Specification | Premium UPVC | Aluminium | Timber |
|---|---|---|---|
| Small 3m x 4m | £35,000-£45,000 | £45,000-£55,000 | £50,000-£60,000 |
| Medium 4m x 5m | £55,000-£70,000 | £70,000-£85,000 | £75,000-£95,000 |
| Large 5m x 6m | £75,000-£95,000 | £95,000-£115,000 | £105,000-£135,000+ |
For wider extension budgeting, see our Glass Extensions Price Guide 2026.
Buyer Guide
Orangery vs Conservatory: Which Is Right for You?
Both create beautiful light-filled extensions, but they suit different priorities. This comparison covers the practical differences that matter most.
| Feature | Orangery | Conservatory |
|---|---|---|
| Roof | Solid perimeter with central glazed lantern | Fully glazed roof for maximum daylight |
| Thermal performance | Typically stronger due to more insulated roof structure | Strong when specified with New Generation Glass |
| Price from | £35,000 | £25,000 |
| Build time | Usually 10-14 weeks | Usually 8-12 weeks |
| Feel | More architectural and part of the house | Light, open and garden-connected |
| Best for | Warmth, solidity and a built-in feel | Maximum light and garden views |
Want the brighter garden-room option? See our bespoke conservatories.
Buyer Guide
Orangery vs Glass Box Extension
A glass box gives a very different architectural effect. This comparison helps separate the warm, built-in room from the minimal glazed statement.
| Feature | Orangery | Glass Box |
|---|---|---|
| Architecture | Solid perimeter, lantern roof and optional pillars | Minimal structural glazing with frameless feel |
| Light | Overhead lantern plus glazed elevations | Maximum glass and widest garden views |
| Thermal feel | Warmer, more insulated room-like feel | Highly glazed, specification dependent |
| Best property fit | Traditional, period and classic contemporary homes | Modern homes and bold contrast extensions |
| Price route | Often more predictable through standard roof/pillar logic | Highly dependent on structural glass and opening sizes |
| Best for | A permanent living space with architectural warmth | A minimalist indoor-outdoor statement |
If you want the most contemporary glazed option, compare this with our Glassbox extensions.
Not sure whether an orangery is right for your home?
Book a free home consultation. Or call 01243 538999 and David, our digital assistant, can take a few details so the right specialist follows up personally.
Our Process
How an Orangery Project Works
From first conversation to finished orangery, here is what to expect.
1
Free Home Design Visit
A specialist visits your home to understand your requirements, assess the site, take measurements and discuss options. There is no obligation and no pressure.
2
Bespoke Design
We produce drawings tailored to your architecture, preferences and budget, including roof form, lantern size, materials and opening systems.
3
Build and Installation
Your orangery is built using the specified materials, then installed on site. We manage the project from groundworks through to glazing and finishing.
4
Handover and Aftercare
We do not consider a project complete until you are fully satisfied, with guarantee terms and aftercare guidance confirmed for your specification.
Verified Customer Reviews
What Our Customers Say
Independently verified reviews from Google. These are real homeowners sharing their experience of working with Room Outside.
“We are absolutely delighted with our experience with Room Outside and cannot recommend them highly enough. Richard Bennett guided us all through the design process with patience, professionalism and integrity.”
“After much research I chose Room Outside, I was not disappointed. From the start of the journey the service and attention was first class. Very impressed with the New Generation Glass.”
“Room Outside provided us with a first class level of service throughout. We are so pleased with the installation and love our new room immensely.”
Expert Answers
Orangery FAQs
Straightforward answers to the questions homeowners ask most often.
A bespoke Orangery from Room Outside typically costs from £35,000 to £115,000+, depending on size, materials, complexity and site requirements. Smaller 12m² designs start around £55,000, while larger 30m² projects with premium finishes sit toward the higher end. We provide a detailed quotation after a free home visit.
An Orangery has a solid insulated perimeter roof with a central glazed lantern, optional brick pillars and a more permanent architectural feel. A conservatory has a fully glazed roof and walls, offering maximum light but typically less thermal performance. Orangeries generally cost 20-40% more but can feel more like a natural extension of the house.
Many Orangeries fall under Permitted Development Rights and do not require a formal planning application, provided they meet criteria around size, height and proximity to boundaries. Rules differ for conservation areas, listed buildings and certain other designations. We check this during the initial home visit and manage any applications that are needed.
Orangeries are generally warmer thanks to their solid insulated perimeter roof, which helps reduce heat loss compared to a fully glazed conservatory roof. With the right specification, an Orangery can achieve an A++ thermal rating. The solid roof sections also help maintain a more even temperature throughout the day.
A typical Orangery project takes 10 to 14 weeks from confirmed order to completion, covering manufacturing, groundworks, frame installation, glazing and finishing. More complex designs or projects that require planning approval may take longer.
Depending on product and location, we offer up to a 10-year structural guarantee backed by independent UK insurers, alongside separate product-specific warranties covering glazing, roofing and mechanical components. The exact guarantee terms are confirmed in your quotation before you commit to anything.
With modern double-glazing and solid perimeter insulation, our Orangeries achieve U-values as low as 1.2 W/m²K for walls and roof. With New Generation Glass the space can be used comfortably year-round with minimal additional heating, and an A++ thermal rating is achievable with the right specification.
Timber Orangeries, when properly maintained, can last 50+ years; aluminium structures 45+ years; and premium UPVC 25-35 years. Our 10-year structural guarantee covers the frame and installation, and we provide maintenance guidance to help maximise the lifespan of your Orangery.
Ready to Start Your Project?
Whether you are still exploring ideas or ready to move forward, we have the right next step for you.
Prefer to talk? Call 01243 538999. David, our digital assistant, can take a few details so the right Room Outside specialist follows up personally.