North Cornwall · PL33 · Cornwall Council North
House Extensions in Delabole
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. A Delabole brief starts on the street, not the screen — Delabole is a small industrial settlement in the PL33 catchment, shaped by historic works, transport links and everyday village housing, with a building stock that leans toward former industrial buildings and small infill plots.
Delabole sits in North Cornwall — just off the A39; covering PL33 from Tintagel, Camelford, Truro outward.
- Rural / open-countryside policy area
- ✓Same team on paper as on site
- ✓Fixed-fee planning packages, no surprise invoices
- ✓Measured-survey accuracy from day one
- ✓One studio — design, planning and build under one roof
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Free Delabole feasibility call
Tell us about your extension. We reply within 1 working day — no obligation.
Local watch-list
Common Delabole pitfalls we plan around.
Watch #1
Local Plan tests on isolated dwellings, plus lane access for plant and deliveries around Delabole
Watch #2
Party Wall notices and shallow roof voids typical of workers cottages in the PL33 district
Who this is for
In Delabole the extension brief is almost always a private homeowner improving a forever home — so we lead with feasibility and long-term value, not show-home rhetoric.
Scope
The parts of the job we can take on in Delabole
These stages can be bought separately. Most PL33 projects use three of them.
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.
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.
Construction and technical drawings
1:10 and 1:20 details for the parts of the job builders normally have to guess at.
Who this is for
What we can genuinely back up in Delabole
- Applications for Delabole are handled through Cornwall Council, with Bodmin the nearest planning office we deal with regularly.
- Drawings, planning and building regulations are all produced in-house, so a extension enquiry does not get passed between firms.
- Design and build are offered from the same studio, which means the person answering your Delabole 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.
Keep reading
Other work we do around Delabole
Delabole is covered from our Tintagel 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.
Page purpose
Drawings only, or drawings through to handover in Delabole?
Both routes are open on a PL33 project, and the honest answer depends on whether you already have a builder you trust. Plenty of Delabole 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 PL33 scope, not as one opaque figure
Local context
Why Delabole is its own job.
Old industrial plots, heritage remnants and mixed residential edges mean design statements need to explain scale, access and materials clearly. 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. So every Delabole job runs as a PL33-specific piece of work — local policy, local fabric, local builders. Most of our extension work in Delabole lands on former industrial buildings, with detailing that has to nod to the wider Camelford streetscape.
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.
What we focus on
Extensions considerations specific to Delabole.
01
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.
02
Cornish granite and slate-hung walls react differently to new openings than modern brickwork — lintel choice and structural sequencing matter.
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 Delabole 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 Delabole and the PL33 area.
Our process
How a Delabole 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
Delabole Extensions — local questions answered.
- How much does an extension cost in Delabole?
- 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 Delabole 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 Delabole 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 Delabole 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.
- How long does the whole process take?
- Allow roughly three months for design and approvals, then twelve to twenty weeks on site for a typical single-storey extension. Wraparounds and two-storey add-ons take longer, mostly through approval and groundworks.
Delabole is part of Tintagel
Delabole sits inside the Tintagel catchment — we cover both as one extension territory.
See Extensions in Tintagel →Local proof — Our North Cornwall workload means a Delabole extension project never has to wait for an out-of-county team to drive down.
Get a free feasibility viewOther services in Delabole
Nearby places we cover
The PL33 stretch of North Cornwall has its own rhythm; our extension work respects it, and Cornwall Council usually responds in kind. stone terraces in particular need a tailored structural answer.
Walk us round your Delabole site — free first visit Most Delabole visits happen within the week.
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