East Cornwall · PL15 · Cornwall Council East
One studio for extension in Lewannick
Extensions are the bread and butter of Cornish homes — adding the kitchen-diner the original layout never had, the bedroom for a growing family, or the light and views the back of the house should always have had. Working in Lewannick means starting from the PL15 context — Lewannick is a rural parish in the PL15 area, with farmsteads, lanes and scattered homes defining its built character, with a building stock that leans toward scattered modern homes and converted barns.
Lewannick sits in East Cornwall — just off the A38; covering PL15 from Launceston, Warbstow, North Petherwin outward.
- Rural / open-countryside policy area
- ✓Measured-survey accuracy from day one
- ✓One studio — design, planning and build under one roof
- ✓Same team on paper as on site
- ✓Fixed-fee planning packages, no surprise invoices
Free · No obligation
Free Lewannick feasibility call
Tell us about your extension. We reply within 1 working day — no obligation.
Page purpose
Drawings only, or drawings through to handover in Lewannick?
Both routes are open on a PL15 project, and the honest answer depends on whether you already have a builder you trust. Plenty of Lewannick clients take the drawings, tender them locally, then come back to us for the build if the numbers do not stack up.
- Route one: feasibility, planning and a tender-ready technical pack
- Route two: the same pack, then the build under one contract
- Either way the survey and feasibility work is identical, so the decision can wait
- Fees quoted per stage against the PL15 scope, not as one opaque figure
Scope
Scope options for Lewannick clients
Not every project needs every stage. On a Lewannick job we scope to what the site and the consent route actually require.
Measured survey
An accurate record of what is actually there, which is where most avoidable cost is removed.
Full design and build
One contract from first sketch to handover, with the same team on paper and on site.
Construction and technical drawings
1:10 and 1:20 details for the parts of the job builders normally have to guess at.
Structural coordination
Calculations coordinated with the drawings so building control sees one consistent story.
Planning application drawings
Existing and proposed plans, elevations, site and block plans drawn to validation standard.
Local watch-list
The PL15 constraints that shape a extension brief.
Watch #1
Local Plan tests on isolated dwellings, plus lane access for plant and deliveries around Lewannick
Who this is for
Straight facts about working with us here
- Design and build are offered from the same studio, which means the person answering your Lewannick questions has seen the detail built.
- Drawings, planning and building regulations are all produced in-house, so a extension enquiry does not get passed between firms.
- Applications for Lewannick are handled through Cornwall Council, with Liskeard the nearest planning office we deal with regularly.
Planning rules change and every site is different. For the final position on your address, check with Cornwall Council as the local planning authority or the Planning Portal.
What we focus on
Extensions considerations specific to Lewannick.
01
Cornish granite and slate-hung walls react differently to new openings than modern brickwork — lintel choice and structural sequencing matter.
02
Wind and sea-spray exposure can drive material choices on west-facing extensions; we detail accordingly.
03
Drainage on older Cornish properties is rarely on a clean modern map; CCTV survey before design is often money well spent.
04
Permitted development for rear extensions runs to four metres on a detached house, three on a semi or terrace — but Article 4 areas remove this in some parishes.
Quick check
Want a straight answer on whether your Lewannick project is worth pursuing?
Send a few details — we'll come back within 1 working day with a plain-English view on planning risk, likely cost band and whether it's a project we'd take on.
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Get a free feasibility view
For projects in Lewannick and the PL15 area.
Local context
Why Lewannick is its own job.
Two things shape a Lewannick application: parish character and policy. On policy — open-countryside policy, access lanes, drainage and agricultural building history all need to be addressed before drawings go too far. For extension specifically, Cornwall Council's Local Plan applies tighter tests to isolated rural dwellings here, so design rationale and policy fit need to be set out clearly from the outset. Get that local reading right and the rest of the Lewannick programme tends to run on time. On scattered modern homes in particular — the kind you'll also find toward Boyton — the extension brief always has to read the existing fabric first.
Planning note
Most extensions in Cornwall are either permitted development or a straightforward householder application — but Conservation Area and AONB sites need a more careful design conversation upfront.
Our process
How a Lewannick extension project runs.
Step 1
Brief
We meet on site, talk through how you live now and what's missing from the current layout.
Step 2
Design
Two or three sketch directions with rough budgets, then refinement of the chosen route.
Step 3
Approvals
Planning or Cert of Lawfulness, then a full building regs package.
Step 4
Build
Either through your own builder with our drawings, or as a full build by our team.
Step 5
Handover
Snag, certify, hand over the keys to your new space.
Typical single-storey rear extensions run twelve to twenty weeks on site; two-storey and wraparound projects sixteen to thirty weeks.
FAQs
Lewannick Extensions — local questions answered.
- How much does an extension cost in Lewannick?
- Build costs in Cornwall typically run from around £2,200 to £3,200 per square metre for a good-quality single-storey extension, more for kitchen-grade fit-out or complex glazing. We give a realistic budget before drawings start, not after. In Lewannick specifically, we'd start by checking the latest parish-level planning history before committing to a direction.
- We live in the house. Can a extension in Lewannick be done while we stay put?
- Usually yes for single-storey and rear work, with a temporary kitchen or bathroom arrangement agreed before the start. Whole-house remodels and roof work in Lewannick are often easier if you move out for a few weeks. We set that expectation at feasibility stage rather than halfway through.
- Can you handle the build as well as the design?
- Yes — that's the whole point of the studio. One contract, one point of contact, no finger-pointing between architect and builder when something needs a decision on site.
- What about the Party Wall Act?
- If you share a wall with a neighbour or build close to a boundary, the Act applies. We flag it early, recommend a surveyor and keep the programme aligned with the notice period.
- Do I need planning permission for an extension?
- Often no — single-storey rear extensions, side extensions and modest two-storey additions can sit inside permitted development on a typical detached house. Conservation Areas, AONB and Article 4 zones remove some of those rights, so we always check the address first.
- Will my house be liveable during the build?
- For most rear and side extensions, yes — we sequence the works so the kitchen and one bathroom stay functional until the new build is watertight and connected.
Lewannick is part of Launceston
Lewannick sits inside the Launceston catchment — we cover both as one extension territory.
See Extensions in Launceston →Keep reading
Where to go next from Lewannick
Lewannick is covered from our Launceston run. Being a smaller place, the local detail matters more than the headline policy: lane access, neighbour proximity and what the immediate street already looks like.
Other services in Lewannick
Nearby places we cover
The extension jobs we're proudest of in Lewannick are the ones where the planning route was clear before a single elevation was drawn. converted barns in particular need a tailored structural answer.
Drawings only, or the full Lewannick build? Bring the deeds, we will bring the survey kit for the extension.
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