What is an orangery?
An orangery is an extension with brick or block piers, large areas of glazing and a solid perimeter roof around a central roof lantern. It sits between a conservatory and a traditional extension: brighter than an extension, warmer and more private than a conservatory.
How much does an orangery cost in North Watford?
In North Watford, an orangery typically costs £2,550–£3,600 per m² of floor area, including VAT at 20% (standard rate). For a typical 16 m² project that is roughly £41,000–£57,500. Building costs in the East of England run about 6% above the UK average, and the figures for North Watford are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| Smaller project (11 m²) | £28,000–£39,500 |
| Typical project (16 m²) | £41,000–£57,500 |
| Larger project (22 m²) | £56,000–£79,000 |
| Rate per m² | £2,550–£3,600 |
The main things that change the cost:
- Opening into the house
- Heating and flooring
- Lantern size
- Amount and type of glazing
Use the guide price tool to see how size and specification change the figure, then ask for a written, itemised quote.
Do you need planning permission for an orangery in North Watford?
Whether you need planning permission depends on your house and its location in England. In England a single-storey rear extension is often permitted development: broadly up to 3 metres deep on a semi-detached or terraced house and 4 metres on a detached house, no higher than 4 metres, with eaves no higher than 3 metres within 2 metres of a boundary, and covering no more than half the garden. The larger home extension scheme allows up to 6 or 8 metres if you notify the council first and neighbours have a chance to comment. In conservation areas, National Parks and National Landscapes the larger home extension route, side extensions and cladding are not permitted development. Flats and houses whose rights have been removed need a planning application, and listed buildings need listed building consent.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
We check this for your address before design work starts, so there are no surprises later.
What we handle
Handled as part of most orangeries:
- Design to suit the style of the house
- Electrics, heating and plastering
- Foundations and dwarf walls or piers
- Insulated perimeter roof with internal pelmet
- Building control sign-off where required
- Roof lantern and glazed panels
How long does it take?
Build time is typically 8 to 12 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in North Watford
Many towns in the East of England have estates built since the 1970s, where garage conversions and rear extensions are popular.
North Watford sits in Hertfordshire, about 16 miles south-west of Hertford. We cover the whole of North Watford, including postcodes WD1 and WD2.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Design and pricing
Design options, then a fixed quote based on the chosen drawings and specification.
- 03
Approvals in place
We handle planning, building control and neighbour notices before work starts.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about orangeries in North Watford
How much does an orangery cost in North Watford?
In North Watford, an orangery typically costs £2,550–£3,600 per m² of floor area, including VAT at 20% (standard rate). A typical 16 m² project comes to roughly £41,000–£57,500. Your fixed price depends on the survey and drawings.
Can an orangery replace a conservatory?
Yes. We can remove an old conservatory and build an orangery on new or upgraded foundations.
Who approves an orangery in North Watford?
Planning matters in North Watford go to the council covering your address, and the work needs building control approval. We prepare and submit the applications for you.
How long does it take?
Typically 8 to 12 weeks on site once approvals are in place.
Does an orangery need building regulations approval?
If it is open to the house or does not meet the conservatory exemption, yes. Most orangeries are treated as extensions and need building control approval, which we arrange.