Wraparound extensions in Launceston
Our design and build teams take on wraparound extensions in Launceston, from the first measured survey through planning and building control to the finished room.
- Guide price in LauncestonFrom £36,500 inc VAT
- PlanningUsually a householder application
- Build time14–20 weeks on site
- Postcode districtsPL15
How much does a wraparound extension cost in Launceston?
For Launceston we adjust our national guide rates by ×1.02, the factor we use for South West England. Figures include VAT; your written quote after the survey replaces them.
Typical rates in Launceston: £2,040 to £3,770 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| Compact L-shape 18 m² | £36,500 – £44,500 | £42,000 – £53,500 | £53,000 – £68,000 |
| Medium L-shape 25 m² | £51,000 – £61,500 | £58,500 – £74,000 | £73,500 – £94,500 |
| Large L-shape 32 m² | £65,000 – £78,500 | £75,000 – £95,000 | £94,500 – £121,000 |
For a figure based on your own dimensions, use our guide-price tool.
What is included
- Survey, design and 3D layout options
- Foundations, drainage and any manhole relocation
- Party wall notice support (England and Wales)
- Full internal finish or kitchen-ready shell
- Roof with glazing along the side return
Planning and approvals in Launceston
In England a wraparound extension is assessed as both a side and a rear extension, and the combination usually falls outside permitted development, so most need a householder planning application (£548 from 1 April 2026).
Homes in conservation areas, national parks, National Landscapes (formerly AONBs), the Broads and World Heritage Sites have tighter rules, so we always check the property's status and planning history before design starts.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
Applications are decided by the local planning authority (your district, borough or unitary council).
Extensions in and around Launceston
Postcode districts we cover around Launceston include PL15. Neighbouring towns we cover include Bodmin (18 miles), St Austell (26 miles), Newquay (33 miles), Truro (38 miles).
Just over the Devon border, Plymouth is about 21 miles away. In the South West, local stone, render and brick vary from town to town, so matching materials is a big part of designing an extension that looks right.
Our process, step by step
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
With the design and specification agreed, you get a fixed written price and a start date.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Wraparound extension questions answered
Do you cover all of Launceston?
Yes. We cover Launceston and the surrounding parts of Cornwall. Site visits are free and there is no obligation.
Do I need building regulations approval in Launceston?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Launceston, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Will I need to move a drain?
Often. Side returns frequently contain a manhole or a shared drain. Building near or over a public sewer needs the water company’s consent in England and Wales, which we arrange.
Is a wraparound better than a side return alone?
It adds far more space, but costs more and needs planning permission more often. Our comparison guide sets the two side by side.
Book a free site visit in Launceston
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.