Lean To Conservatory Prices, Kits and All You Need To Know

Conservatory Style: Lean To

Overall Rating: 



Planning & Regulations 

DIY Lean To?

The Roof  



  • Cheapest conservatory design 
  • Suitable for a self build
  • Rectangular shape for easy furniture placement 
  • check
    Adds value to home whilst maximising living space 


  • Not suitable for use as a kitchen extension/living space
  • Still need basic building knowledge for self build

What is a Lean To?

A lean to are simple style conservatories with clean lines that give homes a contemporary look. The style is ideal for properties with low eaves such as bungalows or other buildings with restricted space, as the pitch of the lean-to can vary. Lean tos are also called suntraps or garden rooms.

They tend to be constructed to the back or side of the building, to an external wall. The lean to is the most popular conservatory style in the UK. The roof system of a lean to is angled away from the house, and the conservatory can be either floor to roof glass or constructed upon low-level walls known as dwarf walls, or pillars. 

 key features

  • Sloping roof attached to existing building
  • Square or rectangular in shape
  • Cost-efficient way of adding extra space to your home
  • Low-pitched roof

Lean To Conservatories Detailed Review

Design - Star Rating 4/5

The lean to conservatory has sleek, clean lines that can be easily adapted to suit your personal needs. It is a simple structure that is erected on the outside of the existing building. Freestanding lean tos are also available but are less common. The rectangular shape of the lean-to makes it convenient for furniture placement, giving an abundance of space that is drenched in natural light and warmth. Lean to conservatories can be constructed with a wooden frame, but are most commonly made of UPVC and large glass panels. There are a variety of conservatory designs and prices on the market. 

Off-the-peg lean to conservatories are available to buy, or you can purchase a bespoke conservatory that can be large enough to act as an extra room such as dining room, or small enough for a few chairs to enjoy the sun and warmth. Small conservatory ideas and designs are available to view online to give you an idea of what sort of lean to best suits your needs. Small lean to extension ideas include use as a growing room for plants, a toy room, or just somewhere to place small comfortable seating to allow you to enjoy your garden all year round. 

small lean to conservatory designs

Affordability- Star Rating 5/5

Glass lean to conservatories are a popular option for homeowners due to their affordability. They offer a cost-effective and economical way to add value to your home and maximising your living space. There are many options to take into consideration when looking for a cheap conservatory, and costs can be kept to a minimum by selecting certain options. For example, double or triple glazing, conservatory windows, french or bifolding doors, size and construction material are all things to take into account when deciding on buying a upvc conservatory.

A small conservatory can be bought for as little as £850, making one an ideal investment for adding value to your home and increasing your living space for a relatively low outlay  

How much does a small lean to conservatory cost

Planning & Regulations - Star Rating 5/5

Lean to conservatories do not usually need planning permission, they are classed as a permitted development (Planning Portal). This is subject to certain criteria being met. This includes; The conservatory is not to cover more than half of the existing land around the house. The roof of the conservatory must not be higher than the roof of the existing house. It must not extend more than 3 metres from the back of an attached house, or 4 metres for a detached house.

lean to conservatory planning permission

The exception to this is if your house is a listing building or within a conservation area. If your house is a listed building, Listed Building Consent will be required. If your house is in a conservation area, permission may also be required and additional building regulations may apply (Historic England).

DIY Lean To - Star Rating 4/5

Lean tos are a great way to build your conservatory and obvisouly dont require a conservatory installer. Witht basic DIY knowledge and installation guides, you should be capabale of doing it yourself. Whilst some people may just not want the hassle of the build and employ someone to build their lean to, many people choose this type of conservatory due to its relatively easy assembly.

Self-build lean to sunrooms are a popular option for those wishing to add extra space to their home. A DIY conservatory can save you a considerable amount of money with self build conservatory prices being considerably cheaper than supply and fit conservatories. 

lean to conservatory kits

There are a range of DIY conservatories that come supplied with easy to follow instructions. You may wish to hire a professional to build a dwarf wall or lay foundations if you are not confident in those aspects, then continue the rest of the build yourself. Compared to Edwardian, Victorian or DIY orangeries, the lean-to is the most simple design for a home extension.

The Roof - Star Rating 5/5

Unlike lantern roofs, the roof of a lean to sunroom slopes away from the building. This allows rain to run off whilst also being adaptable to suit the building it is to be attached to. The degree of the slope can suit your personal needs, with a shallow pitch being ideal for bungalows, whilst a steeper lean is ideal for terraced or detached houses.

The roof of your lean to can be constructed of either glass or polycarbonate, or occasionally it can be tiled.

Polycarbonate Vs Glass Roof

Polycarbonate roofs are cheaper than glass roofs, although they have the drawback of being less soundproof and less thermally efficient. Glass roofs are more aesthetically pleasing whilst having the added benefit of allowing more light into the conservatory. Tiled roofs have the drawback of letting less light into the conservatory, however, they are more soundproof than polycarbonate. Whilst you do not need planning permission for a glass or polycarbonate roof, a tiled roof may require permission.

Prices - Star Rating 5/5

Self-build conservatory prices vary depending on the size and materials used. A DIY build will be considerably cheaper than employing professionals to install the conservatory. Lean to sunroom kits can be bought for as little as £850 for a basic 2.5m square conservatory. A larger lean to can cost up to £2500 . Compared to Edwardian or Victorian conservatories or orangeries, a lean to conservatory can add value to your home for a relatively low cost.

cost per square foot

These builds can be done without a conservatory company and costs can range from £150 per square metre for a self-build, up to £500 per square metre for supply and fitting.

fully fitted conservatory prices

If you do not wish to self-build your lean-to conservatory, there are multiple companies that supply and fit. You can expect to pay up to around £6,000 for a fully fitted conservatory .


Edwardian conservatory

Edwardian conservatories tend to be more expensive than a lean to conservatory. They can take on different shapes and sizes compared to the rectangular lean to. A lean to is ideal when space is limited, particularly if you live in a bungalow. Edwardian conservatories have apex roofs, which if you live in a bungalow, means it would not meet building regulations if the apex is higher than the bungalow roof.

Lean to conservatories are easier to install than an Edwardian conservatory and are more suited to a self-build project.

Victorian conservatory

A Victorian conservatory is a multi-faceted structure with a steeply pitched roof. Like the Edwardian conservatory, the roof may make Victorian conservatories unsuitable for some buildings due to the height of the roof. Whereas the rectangular design of a lean to conservatory makes placing furniture simple, Victorian conservatories are more round, with either three or five facets. Whilst this optimises all-round views of your outdoor space, it can make placing furniture difficult. Whilst the majority of lean-to conservatories are built using uPVC and glass, Victorian conservatories are more likely to be constructed using hardwood or timber.

Should I Buy a Lean To Conservatory

A lean to conservatory can prove to be a valuable investment in your property. They are the cheapest design of conservatory, yet still offer all the benefits of increasing your living space and providing an additional room that can integrate your indoor and outdoor living areas. Lean-to conservatories are particularly suitable for homeowners looking for a self-build project and design requirements like underfloor heating or french doors can be met with ease because your doing it yourself.

Also, due to their relative ease of erection compared to single-storey extensions or other conservatory types. A lean to allows you to enjoy your garden all year round, with the predominantly glass structure allowing an abundance of light and warmth to penetrate it. If you are looking for an extension so, for example, you can increase your kitchen space or make a larger living room, then a lean to will not be suitable as it needs to be erected against an external wall and be accessible from your house via your current external back door. That being said, they are ideal for uses such as for a play-room, study, dining room, or just as a seating area with comfortable conservatory seating to allow you to sit and enjoy the natural light all year round.