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What is a conservatory?

  • 10 December 2025|
  • Conservatories

gable end conservatory with sliding doors and french doors

If you’ve been considering ways to add more living space to your home, you’ve probably come across the term “conservatory” more than once. But what exactly does it mean?

Whether you’re exploring the definition of a conservatory for the first time or weighing up different options for extending your property, understanding what a conservatory room actually is will help you make the right choice for your home.

The definition of a conservatory

Put simply, a conservatory is a glass extension attached to an existing building, designed to bring plenty of natural light into your home while creating a seamless connection with your garden.

Traditionally, conservatories feature glass walls and a glass roof, though modern conservatories often incorporate solid roofing elements for improved insulation and comfort during the colder months.

The key characteristic that sets a conservatory apart is its glazed structure, which floods the space with natural light and offers views of your outdoor space all year round.

What is the legal definition of a conservatory?

According to building regulations, a conservatory is defined as a structure with at least 50% glazed walls and at least 75% of its roof glazed. It must also be separated from the rest of the house by external-quality doors and walls, plus have independent heating controls.

This legal definition of a conservatory is important because it determines whether your project requires planning permission and how it complies with building regulations.

How conservatories differ from other extensions

It’s worth understanding how a conservatory compares to similar home improvements:

  • Orangery: Features more brickwork than a conservatory, with large windows set into solid walls and often a flat roof with a glazed lantern
  • Sunroom: Typically built with more solid walls and less glass than a conservatory
  • Garden room: Usually a fully insulated structure with standard windows rather than predominantly glazed walls

Each option offers similar benefits, but if you’re after a lot of light and a strong visual connection to your garden, a conservatory is often the best option.

white upvc victorian conservatory with glass roof

Types of conservatory design

There’s no one-size-fits-all approach when it comes to conservatories. The type of conservatory you choose will depend on your home’s architecture and how you plan to use the space. Popular styles include:

  • Victorian conservatories: Characterised by ornate detailing and a bay-fronted design
  • Edwardian conservatories: Known for their square or rectangular shape, maximising internal floor space
  • Lean-to conservatories: A simple, cost-effective design that works brilliantly on bungalows or properties with height restrictions
  • Gable-end conservatories: Feature a striking triangular front that creates an impressive sense of height
  • Modern conservatories and orangeries: Sleek designs often incorporating full glass to floor glazing or alternatively brick pillars sitting on dwarf walls, bi-fold or sliding doors to create maximum access to your garden, and internal pelmet boxing creating an orangery like lantern roof.

How homeowners use their conservatory room

The versatility of a conservatory means it can serve multiple purposes. Many homeowners use theirs as a dining room, home office, playroom or simply a relaxing space to enjoy their garden views. With proper heating and underfloor heating options, your conservatory can be a comfortable retreat throughout the year, rather than just during warmer months.

Modern advancements in insulation and ventilation mean today’s conservatories are far more practical than older designs. You won’t need to rely on artificial lighting during the day, and with the right specifications, your conservatory can remain comfortable without excessive heating costs.

Does a conservatory add value?

Yes, a well-designed conservatory can add between 5-10% to the value of your property. Beyond the financial benefits, it’s a great way to improve your quality of life at home, providing extra space without the expense and disruption of a full extension.

aerial view of modern black conservatory with glass roof and sliding doors

Ready to explore your options?

Now you understand what defines a conservatory room, why not discover which style and functionality would work best for your home? Our team at Enhance Conservatories has decades of experience helping homeowners across the region find the perfect solution for their property.

Get in touch with a member of our team today for a free, no-obligation quote. We’ll talk you through the different options available and help you create a beautiful new living space that brings natural light and functionality to your home.

Contact us today to start your conservatory journey.