How long do conservatories, orangeries and other types of glazed extension take to build?

The length of time it takes to build any structure is largely dependent on its size and shape. But, before we begin any installation work, our team of expert surveyors will carry out a full technical survey and prepare working drawings for you to browse through.

Once work begins, a typical conservatory installation will take around 4-5 weeks from the start of the job until completion. Orangeries, on the other hand, tend to take a little bit longer, around 6-8 weeks. Whilst work is being carried out on your home, between 2-5 members of our expert installation team will be on site, depending on the size of the job.

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The typical process for building conservatories/orangeries:

1. Taking the measurements

We take precise measurements to ensure our installations are correct to the nearest millimetre.

2. Laying the foundations

We lay either traditional strip footing or block and beam floors to ensure the new structure is supported, insulated and weatherproof.

3. Building the structure

Starting with the walls and floor, we then fit the frames for any windows and doors along with the roof. Then we fit the glazing.

4. Adding the finishing touches

This includes your choice of flooring and any other finishing touches like plastering the walls and lighting.

Supalite tiled roof Victorian conservatory

Planning permission for conservatories and orangeries in Essex and South East London

Here at Chigwell Window Centre, we take care of acquiring any necessary planning permissions before we start working on your home.

For any who are wondering whether planning permission might be required for a conservatory, orangery or glazed extension that you’re planning, we have listed the current guidance for planning permission in England below:

  • Provided the single storey extension does not exceed 8m for detached properties and 6m for any other kind of property, planning permission will not be required. However, this is subject to the Neighbour Consultation Scheme.
  • If your permitted development rights have been removed, you will need to apply for planning permission.
  • The roof must not exceed 4m in height or be higher than your home’s roof.
  • It must contain no balconies, verandas or raised platforms.
  • It must be at ground level and be separated from the rest of your property by an external door or set of doors.

If your property falls within a conservation area, designated land or a Site of Specific Interest, planning permission might still be required even if abiding by the guidance above. In such cases, we recommend checking the planning guidance on your local planning authority’s website.

Interactive planning permission guide

Building Regulations for conservatories

Like we do when it comes to planning permission, we ensure that the necessary Building Regulations approval is taken care of before work starts (if required).

In most cases Building Regulations approval is not required, although it might be if a conservatory:

  • Has an internal floor area that exceeds 30 square metres.
  • Is not sited at ground approval.
  • Does not have at least 50% glass coverage on newly built walls.
  • Has a roof that is not at least 70% translucent.
  • Is not separated from the main property by a physical barrier such as external quality doors.
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White uPVC Edwardian conservatory installation

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