North Cornwall · PL30 · Cornwall Council North
Extensions for Warleggan (PL30)
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. The way we approach extension in Warleggan starts with a measured walk-round — Warleggan is a moorland-edge hamlet in the PL30 area, where exposed weather, narrow lanes and rural character set the brief, with a building stock that leans toward farm buildings and converted barns.
Warleggan sits in North Cornwall — just off the A39; covering PL30 from Bodmin, St Breward, Washaway outward.
- Rural / open-countryside policy area
- ✓Measured-survey accuracy from day one
- ✓One studio — design, planning and build under one roof
- ✓Fixed-fee planning packages, no surprise invoices
- ✓Same team on paper as on site
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Free Warleggan 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 Warleggan?
Both routes are open on a PL30 project, and the honest answer depends on whether you already have a builder you trust. Plenty of Warleggan 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 PL30 scope, not as one opaque figure
Scope
Scope options for Warleggan clients
Not every project needs every stage. On a Warleggan job we scope to what the site and the consent route actually require.
Full design and build
One contract from first sketch to handover, with the same team on paper and on site.
Building regulation drawings
Full Plans sets with sections, construction notes and coordinated structural information.
Measured survey
An accurate record of what is actually there, which is where most avoidable cost is removed.
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.
Local watch-list
Common Warleggan pitfalls we plan around.
Watch #1
Local Plan tests on isolated dwellings, plus lane access for plant and deliveries around Warleggan
Watch #2
Party Wall notices and shallow roof voids typical of stone cottages in the PL30 district
Who this is for
Straight facts about working with us here
- Drawings, planning and building regulations are all produced in-house, so an extension enquiry does not get passed between firms.
- Applications for Warleggan are handled through Cornwall Council, with Bodmin the nearest planning office we deal with regularly.
- Design and build are offered from the same studio, which means the person answering your Warleggan questions has seen the detail built.
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 Warleggan.
01
Drainage on older Cornish properties is rarely on a clean modern map; CCTV survey before design is often money well spent.
02
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.
03
Extensions over a certain proportion of the original house trigger full Part L upgrade obligations to the existing building — worth knowing before brief is set.
04
Cornish granite and slate-hung walls react differently to new openings than modern brickwork — lintel choice and structural sequencing matter.
Quick check
Want a straight answer on whether your Warleggan 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 Warleggan and the PL30 area.
Local context
Why Warleggan is its own job.
In Warleggan the planning picture is specific: rural policy, landscape impact and services such as drainage are usually the key constraints, especially outside settlement boundaries. 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. That local reading is what makes a Warleggan (PL30) project different from a generic Cornwall scheme — and is the whole reason we work this way. On farm buildings in particular — the kind you'll also find toward Nanstallon — the extension brief always has to read the existing fabric first. Where a property sits inside a conservation area or is listed, the assessment tends to turn on materials, window detailing and how visible the change is from the street rather than floor area alone. Cornwall Council's conservation team, or the Planning Portal, is the right place to confirm what applies to a specific address. On working land, the practical questions are usually track access for deliveries, foul drainage and how a new form sits in open landscape. General guidance only, so confirm your position with Cornwall Council before committing.
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 Warleggan 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
Warleggan Extensions — local questions answered.
- 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. In Warleggan specifically, we'd start by checking the latest parish-level planning history before committing to a direction.
- We live in the house. Can an extension in Warleggan 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 Warleggan are often easier if you move out for a few weeks. We set that expectation at feasibility stage rather than halfway through.
- How much does an extension cost in Cornwall?
- 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.
- 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.
- 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.
Warleggan is part of Bodmin
Warleggan sits inside the Bodmin catchment — we cover both as one extension territory.
See Extensions in Bodmin →Keep reading
Where to go next from Warleggan
Warleggan is covered from our Bodmin 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 Warleggan
Nearby places we cover
From initial feasibility to final handover, we manage extension projects across Warleggan with careful attention to what makes North Cornwall unique. For the final position on any address, Cornwall Council or the Planning Portal is the place to confirm it.
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