As a very straightforward rectangular shape, a lean-to conservatory is suited to both large and small rooms. This type of conservatory, as with many other conservatory extensions, can be built with all glass sides or by using brick or block to form small low level walls or pillars. Low level brick or block-work are commonly referred to as ‘Dwarf Walls’.
The cost of a new lean to conservatory can go from under £1,000 for a very basic, self assembled & self installed example, up to several thousand pounds for professionally installed larger room.
Clearly, the bigger the conservatory you want to build, the higher the cost. A typical small cheap conservatory would be in the region of 3000mm wide by 1200 to 1500mm deep.
You may also find that when you use a lot of ground area then you could end up having to go over drains, manholes, utility cables or water pipes. In that case you will run into extra expense of protecting or moving them.
Drainage inspection covers or manholes for public sewers are not allowed to be inside a property in many areas, and even if you could do it, the local authority could insist on a right of access. Read this from Thames Water
Broadly you have 2 basic “looks” for the walls and solid or glazed options for the conservatory roof.
What you build your conservatory on top of is important. If the foundation is poor the room could distort or even fail over time. there are 3 primary types of foundation.
Strip foundations can interfere with drains, cables & pipes. Raft & steel base foundations can mostly avoid this problem.
Many small & medium size lean to conservatories can be built without needing prior planning permission if they meet the “permitted development” criteria. Its always best to check beforehand with your local authority.
Getting planning permission if you do need it is not hugely expensive, but if you build without it and find out after that you should have got planning permission, then it can be really costly to rectify “after the event” – read more here
|CONSERVATORY STYLE / DESIGN||Approximate Size||PRICES RANGE|
|Lean-to Conservatory (Basic)||3000mm x 1500mm||from £3,000 upwards|
|With Dwarf Walls||3000mm x 1500mm||from £4,000 + depending on size & design features|
|Supply Only||2200mm x 2300mm||from £2,095.00|
|Supply Only||3700mm x 2300mm||from £2420.00|