Conservatory Cost Calculator
Work out what your new conservatory will cost, from a simple lean-to to a full orangery. Pick your style, size, frame, and roof, then get a full breakdown with regional pricing.
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How this calculator works
Our conservatory calculator estimates the total build cost based on your chosen style (lean-to, Victorian, Edwardian, P-shaped, T-shaped, or orangery), floor area, frame material, and roof type. The tool prices the base slab, dwarf walls, frame, glazing, roof, internal flooring, electrics, and heating separately so you can see exactly where the money is going.
You also choose your roof type - polycarbonate, glass, or solid (tiled) - which significantly affects both the price and the year-round usability of the space. Solid roofs cost more but make the conservatory comfortable in both summer and winter. Regional pricing adjustments reflect labour rate differences across the UK.
Conservatory costs depend on ground conditions, access, and whether any existing structures need removing. If you are removing or altering an external wall to open the conservatory into the house, Building Regulations fees and structural work will add to the cost. These estimates are designed for initial budgeting - always get detailed quotes from at least three conservatory installers before committing.
Frequently asked questions
How much does a conservatory cost in the UK?
A conservatory typically costs between £6,000 and £40,000 depending on the style, size, and materials. A small lean-to in uPVC starts from around £4,000, while a large orangery with hardwood framing and a solid roof can run to £60,000 or more. The most popular choice, a medium Victorian in uPVC with a polycarbonate roof, costs roughly £8,000 to £14,000.
Do I need planning permission for a conservatory?
Most conservatories fall under permitted development, so you do not need planning permission. The main rules are: it must not project more than 4 metres from the rear wall (3 metres for semi-detached or terraced houses), must not cover more than half the garden, and must not be higher than the eaves. You will still need building regulations approval in most cases, especially if you are removing or altering an external wall.
Which type of conservatory is cheapest?
A lean-to conservatory is the cheapest style, starting from around £4,000 for a small uPVC version with a polycarbonate roof. It has the simplest design, with a single sloping roof that sits against the house wall. Victorian and Edwardian styles cost a bit more but offer a more traditional look and better use of floor space.
How long does it take to build a conservatory?
A typical conservatory takes 2 to 4 weeks from start to finish. Simple lean-to designs can be done in as little as 2 weeks, while larger P-shaped, T-shaped, or orangery builds may take 4 to 6 weeks. Groundworks and the base slab usually take the first week, with the frame and roof going up in the second and third weeks.
Is an orangery worth the extra cost?
An orangery typically costs 50% to 100% more than a standard conservatory of the same size, but many homeowners feel the difference is worth it. The brick pillars, flat roof perimeter, and central glass lantern give it more of a proper room feel rather than a bolt-on extension. They also tend to add more value to your property when you sell, because estate agents can list them as an additional room.