Do I need planning permission for a timber framed building?
Spring has well and truly sprung and it’s the time of year that many people start to think about enhancing their homes.
Maybe you’re dreaming about sitting in a sun-drenched oak conservatory? Or thinking about the extra space a timber frame extension would provide? Or, maybe you’d like to get around to having that bespoke oak porch you’ve always wanted?
Whatever addition you’re considering, you’re probably wondering if planning permission is required for your build. With this in mind, we’ve outlined some planning requirements in this blog.
If you’re planning a large project you will need planning permission, however, under permitted development (PD) laws smaller projects don’t need planning permission, provided your property isn’t listed, in a Conservation Area, Area of Outstanding Natural Beauty, National Park or the Broads.
Single Storey Oak Extension
You can build various single storey extensions, including garden rooms and orangeries without planning permission, providing the extension meets the following:
- The extension does not sit forward of the principal elevation
- Materials should be similar
- Where it’s within 2m of any boundary, the eaves cannot be higher than 3m, and no more than 4m in height
- Rear extensions — no more than 4m in depth (detached house) or 3m in depth (semi-detached or terrace)
- Side extensions — the width of the extension must not be greater than half the width of the original dwelling
- Side extensions are not permitted on Article 1(5) Land (e.g. AONB, Conservation Areas)
Two Storey Timber Extension
Most two storey extensions will require Planning Permission. A two storey extension can only be built under PD if it’s at the rear of the dwelling (this includes the addition of a second storey onto an existing single storey part of the house). In addition, your two storey extension must not exceed 3m in depth or be within 7m of the rear boundary. Specific restrictions also apply to the glazed nature of windows in such extensions.
We recommend you contact your local council to check if your proposed project needs permission. Alternatively we can contact the council for you.
Where you have a larger plot, there may be opportunities to build multiple outbuildings under PD, providing the total area covered by such buildings/enclosures does not exceed 50% of the total area of the curtilage. This 50% should take into account any extensions, but not the area covered by the main house.
Outbuildings cannot sit forward of the principal elevation, and there are height restrictions depending on the type of roof (4m for dual pitch roofs, 3m for other roofs, and 2.5m when the building is within 2m of the boundary). Outbuildings may only be single storey, with the maximum eaves height remaining at 2.5m.
A key factor to bear in mind when considering what you want to achieve from an outbuilding is that the use should be ‘incidental’ to that of the dwelling, for example a gym, a garage, or a store. Outbuildings under PD cannot be used for residential accommodation, for example a bedroom.
Oak Framed Porch
Whilst many of the schemes described so far have not allowed for the development of any extensions forward of the principal elevation, you can build a porch on the front of your property without obtaining planning permission, as long as you follow certain rules:
- No part of the porch can be taller than 3m
- It cannot be within 2m of any boundary adjacent to a highway
- The ground area (measured externally) does not exceed 3m²
Further information can be obtained from the Planning Portal
We hope you’ve found this blog useful, however, if you have any other questions about timber framed extensions or planning requirements, please leave a comment in the box below, send an email or give us a call on 01782 374087.
Enjoy the warmer weather!
Team Bespoke Oak