Sunroom vs Orangery vs Conservatory

Jigsaw • 1 April 2022

A sunroom is a fantastic alternative to a conservatory as they can be a beautiful space to use all year round. But what is the difference between a sunroom, a conservatory and an orangery?

  • Orangery: An orangery is often designed to blend in with the existing property and is largely used as a functional addition to a house, which can be used as a sitting room or dining room, for example. It usually combines glass tiles with side elevations of brick or stone. It has a solid roof, but you could put a dome or a lantern in it.
  • Sunroom: This is essentially a ‘room with a view’. Glass is incorporated either in the roof or walls, or sometimes in both, to allow light to easily enter the room, and to give those inside a view of the surroundings. As the name suggests, these are rooms where the residents can enjoy a more sunlight filled environment. There are many different types of sunrooms that can be built depending on requirements.
  • Conservatories, like Orangeries, can have some brickwork in the side elevations or they can be all glass. It is not the amount of glass or brickwork that differentiates a Conservatory and an Orangery, it is simply the construction of the roof. A Conservatory has a roof that is all glass whereas an Orangery has a roof that has a solid roof perimeter with a glazed area in the centre.

Conservatories are known to be too cold in winter and too hot in summer making their use limited. A sunroom, on the other hand, is a construction of steel pillars with a sold roof with either by fold doors, windows, or you can have part wall either side and slider doors or French doors, whatever works for you.

With a sunroom, you get the heat from the sun during the day and then you can close the windows to keep the heat in at night, but you still feel like you're outside. You could put in a big skylight across the top like a dome which throws a huge amount of light into an area, and, in the winter, you can have under floor heating which, unlike a conservatory, would be contained in a properly insulated room. As the roof is solid, it has huge amounts of insulation.

While open plan living motivates a lot of new extensions and additions, things aren't always that simple when adding a sunroom, orangery, or conservatory. The rule of thumb for sunrooms is that you will need to tackle more Building Regulations with an open-plan layout than you would with a closed-off layout. As an open-plan layout requires you to knock through a standing wall, there are more complications structurally to consider before building can begin.

Your sunroom or orangery extension will fall under Permitted Development so long as:

  • It is not higher than the existing roof
  • There are no balconies, verandas or porches
  • It does not extend beyond 6m for a semi-detached house, or 8m for a detached house
  • Any side extensions to be single storey with a maximum height of 4m
  • It doesn’t exceed 30m² of living space

Several other criteria apply — the best place to check is , planningportal.gov.uk.

Building Regulations – particularly where thermal efficiency is concerned – will also differ depending on whether your sunroom is open plan to the home (i.e., kitchen diner), or is separated by connecting doors. Your local authority will be able to advise you further.

To find out whether planning permission is required, you should check with your planners. If permission is required, it is normally given as the structure is not imposing or being seen by the neighbours.

Orangery or sunrooms are a popular and modern way of putting an extra bit of space on the back of the house. If you are thinking about getting either, you should consider the expense that comes with under floor heating as there isn’t usually anywhere to put a radiator if it's mainly glass. Bearing in mind current high energy costs, and the rise in building supplies such as steel which has gone up by 60%, the cost of building and heating now may be considerably more than in previous years.

Having said that, these structures are far better than the old conservatories that are cold in the winter and overly warm in the summer, possibly leak and awkward to keep clean.

If you would like to discuss the installation of a sunroom or orangery, get in touch! hello@jcs-ltd.co.uk

by Lisa Woolnough 1 May 2026
Not sure how to choose the right builder? Discover expert tips to avoid stress, delays, and hidden costs on your Surrey renovation.
by Lisa Woolnough 20 April 2026
As the weather warms up and daylight stretches into the evening, many homeowners start looking at their outdoor space differently. That unused garden suddenly feels full of potential, whether it’s for relaxing, working, or entertaining. In 2026, one trend is leading the way in home improvement: garden rooms and outdoor living spaces . From stylish home offices to seamless indoor-outdoor extensions, these upgrades are no longer a luxury, they’re quickly becoming a must-have for modern living. If you’re considering a garden room in Surrey or exploring outdoor living ideas in the UK , here’s what you need to know before getting started. Why Garden Rooms & Outdoor Living Are Trending in 2026 Homeowners are rethinking how they use their space, and the garden is no longer an afterthought. Here’s why demand is growing: Flexible living - Garden rooms double as offices, gyms, or guest spaces Working from home - A dedicated garden office creates separation from the house Lifestyle upgrades - Outdoor kitchens and entertaining areas are increasingly popular Added property value - Well-built outdoor spaces can significantly boost appeal Combined with better weather in spring and summer, April is when these ideas start turning into real plans. Garden Rooms vs Extensions: What’s Right for Your Home? One of the most common questions homeowners ask is whether to build a garden room or extend their home. Garden Rooms Best for: Home offices Studios or gyms Additional flexible space Benefits: Usually quicker to build Often fall within permitted development Less disruption to your home Home Extensions Best for: Expanding kitchens or living areas Creating open-plan layouts Long-term structural changes Benefits: Fully integrated with your home Adds significant long-term value Ideal for larger transformations The Key Decision If you want a separate, flexible space , a garden room is ideal. If you want to transform how your home flows , an extension may be the better option. Many homeowners are now combining both, creating indoor-outdoor living spaces that connect seamlessly to the garden. Costs & Planning Considerations When planning a garden office build or outdoor living project , it’s important to think beyond the structure itself. Typical considerations include: Size and specification of the build Electrical connections and heating Ground conditions and access Materials and finishes Planning permission Many garden rooms fall under permitted development, but this depends on: Height and positioning Proximity to boundaries Intended use For larger builds or integrated outdoor spaces, planning approval may still be required. Starting early in spring gives you time to confirm all requirements before construction begins. Why Groundworks & Timing Matter A successful outdoor project starts below the surface. Proper groundwork is essential for: Stability and longevity Drainage and weather resistance Preventing future movement or damage April is an ideal time to begin: Ground conditions are improving after winter Weather is more predictable Projects can progress smoothly into summer Starting now ensures your space is ready when you want to use it most. Creating Seamless Indoor-Outdoor Living One of the biggest trends in patio and extension design is creating a natural flow between inside and outside. Ways to achieve this: Bifold or sliding doors opening onto patios Matching flooring levels between interior and exterior Covered outdoor seating areas Integrated lighting and landscaping The goal is simple: A space that feels connected, not separate. This approach works particularly well for: Kitchen extensions opening onto the garden Entertaining areas for summer Family-friendly, open-plan living Is a Garden Room Right for You? A well-designed garden room or outdoor space can completely change how you use your home. It’s not just about adding space; it’s about creating a better way to live, work, and relax . Whether you’re considering a garden room in Surrey , a garden office build , or a full indoor-outdoor transformation , the key is starting with the right plan. Start Your Outdoor Living Project with Confidence At Jigsaw Construction Surrey , we help homeowners create high-quality outdoor spaces built to last, from initial planning through to final finish. With the right groundwork, clear design, and expert construction, your garden can become one of the most valuable parts of your home. 👉 Get in touch today to start planning your garden room or outdoor living project.
by Lisa Woolnough 1 March 2026
Thinking about renovating your home this year? Discover why March is the perfect time to plan your home renovation and avoid delays before summer.
More posts