Orangeries and conservatories

Orangery extensions in Nottingham

An orangery extension is a single-storey room built with brick piers or solid wall sections, large glazed panels between them and a flat perimeter roof around a central glazed roof lantern. It has more solid wall than a conservatory, so there is room for radiators, sockets, shelving and kitchen units, while the lantern brings daylight in from above.

This page explains how an orangery is put together, the design decisions that shape it, and what the approvals and costs look like. If you are still deciding between an orangery and a conservatory, our orangeries and conservatories comparison is the place to start.

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  • Roof lantern sized to the room
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What it is

A glazed room with a solid frame

An orangery sits between a conservatory and a conventional brick extension. The corners and some wall sections are solid brick or render, usually built to match the house. Between them are large glazed panels or doors. Above, a flat roof runs around the edge of the room and frames a glazed lantern in the middle.

That mix is what makes it useful. The piers and solid sections carry the roof and give you wall space, which a mostly glazed conservatory lacks. The lantern keeps the room bright without glazing the whole roof.

Orangeries suit most house styles, from period terraces to modern semis. They work best when you want the extra room to feel like part of the house, as a kitchen-diner, dining room, family snug or garden room.

Best for

Homeowners who want plenty of daylight but also need solid wall for furniture, units and heating. Common uses are open-plan kitchen-diners, dining rooms and family rooms.

Typical time on site

Around 8 to 12 weeks once foundations are underway, depending on size and finish. This is an indicative range, not a guarantee. Design and approvals come first.

Anatomy

The parts of an orangery

Brick piers and dwarf walls

Solid corners and low walls built in brick or render, chosen to match or complement the house. They carry the roof and give you somewhere to put radiators, sockets and switches.

Perimeter flat roof

An insulated flat roof runs around the edge of the room. Inside, it usually forms a plastered ceiling band, sometimes called a pelmet, that can hold spotlights and hides the roof structure.

Roof lantern

A raised glazed structure in the centre of the flat roof. Its size and position decide where light falls, so it is usually centred over the part of the room used most, such as the dining table or kitchen island.

Glazed panels and doors

Fixed glazing, French doors or bifold doors fill the spaces between the piers. The balance of glass to solid wall affects the look, the usable wall space and the Building Regulations calculations.

Foundations and floor

Footings and an insulated floor slab, as with any extension. Underfloor heating is an option many people consider because it frees up the limited wall space.

Connection to the house

An orangery is often opened up to the existing kitchen or living room. Removing part of the rear wall needs a structural beam designed by an engineer and approved through Building Regulations.

Design decisions

What to decide before the drawings are fixed

  • Lantern size and position. A larger lantern means more light and more solar gain. Place it over the part of the room you use most, not simply in the middle.
  • Glass to wall ratio. More piers give more wall space and fewer glazed panels. Building Regulations limit the total glazed area of an extension unless the design compensates elsewhere, so this balance is part of the technical design, not only the look.
  • Brick and roof finish. Matching the existing brick and detailing the roof edge carefully makes the room look like part of the house.
  • Doors to the garden. Bifold, French or sliding doors each take up a different amount of wall and open in a different way.
  • Heating. Radiators on the piers or underfloor heating, and how it connects to your existing system.
  • Kitchen use. If the orangery will hold a kitchen, plan where units, appliances and plumbing go early, because solid wall space is limited.
Our process

How we build your orangery

1

Free site survey

We measure up, check ground conditions and the existing rear wall, and talk through how you want to use the room.

2

Design and quotation

We draw the layout, pier positions and lantern, then give you a written, itemised quotation.

3

Approvals

We check whether the design may fall under permitted development or needs a planning application, and prepare the Building Regulations submission.

4

Foundations and base

Footings are dug and an insulated floor slab is laid, ready for the walls.

5

Brickwork and piers

The piers and dwarf walls are built to match the house as closely as possible.

6

Roof and glazing

The perimeter flat roof, lantern and glazed panels are fitted and the room is made watertight.

7

Finish and handover

Plastering, heating, electrics and flooring are completed, then we walk you through the finished room and hand over the certificates.

Guide costs

Orangery extension prices

Indicative 2026 guide ranges, not quotes. Your price comes in a written, itemised quotation after a free survey.

Orangery typeApprox. sizeIndicative guide range
Compact orangery3m x 3m£30,000 – £40,000
Standard orangery3.5m x 4m£40,000 – £55,000
Large kitchen-diner orangery4m x 5m+£55,000 – £75,000
Premium finish with bifoldsVaries£75,000+

Your final price depends on size, the number of piers, lantern size, door type, groundwork and internal finish. Opening up the existing rear wall, and any kitchen fit-out, are listed as separate lines.

Approvals

Planning and Building Regulations for orangeries

Planning

An orangery is treated as a single-storey extension for planning. It may fall under permitted development, depending on the property and any restrictions. The national limits for a rear addition are 3m deep on attached houses or 4m on detached houses (6m and 8m through prior approval), no more than 4m high, and no more than 3m to the eaves within 2m of a boundary. Conservation areas, listed buildings, Article 4 directions and past planning conditions can remove or narrow these rights, so your property needs to be checked.

Building Regulations

Because an orangery has a largely solid roof and solid wall sections, it usually does not meet the conservatory exemption and is treated as an extension. That means Building Regulations approval, covering foundations, structure, insulation, glazing and ventilation.

We handle the paperwork

From permitted development checks to the Building Regulations submission and inspections, we coordinate the approvals your project needs.

Our work

See the work before you decide

Photos tell you more than a paragraph of promises. Our project gallery is organised by extension type, so you can look at finished work before you book a survey.

Our reviews page explains how we check feedback: a review is only published once it has been matched to a real job. That is also why you won’t find anonymous testimonials on this page.

Ask for a reference

At your site survey, ask us for a past customer with a similar orangery you can speak to. It’s the most direct way to hear how a project ran from someone who lived through it.

FAQs

Orangery extension questions

A conservatory is mostly glass, often including the roof. An orangery has brick piers or solid wall sections and a flat perimeter roof around a central lantern. That gives an orangery more solid wall and usually means it is treated as an extension for Building Regulations.

Usually, yes. The solid roof and wall sections mean most orangeries do not meet the conservatory exemption, so they are treated as extensions and need approval for structure, insulation, glazing and ventilation.

It depends on the property. Many orangeries may fall under permitted development within the size and height limits for single-storey extensions, but conservation areas, listed buildings and Article 4 directions can change that. We check during the free survey.

Large enough to light the part of the room you use most, without dominating the ceiling or letting in more summer sun than you want. Its size also feeds into the Building Regulations glazing calculations, so we size it as part of the technical design.

Yes. The piers and solid sections give some wall space for units and appliances, and many people open the orangery up to the existing kitchen. Plan where units and plumbing go early, because wall space is more limited than in a conventional extension.

Around 8 to 12 weeks on site is typical once foundations are underway, depending on size, groundwork and internal finish. Design and approvals come before that. We give you a timeline with your quotation.

Our indicative guide ranges start around £30,000 to £40,000 for a compact orangery and rise to £75,000 or more for a large, high-spec room with bifolds. These are not quotes. You get a written, itemised quotation after a free survey.

Plan your orangery extension with a free survey

Book a free site survey. We will look at where the lantern and piers should go, check the approvals your house needs and give you a written, itemised quotation.