Penwith · TR19
St Buryan extensions — a Penwith studio
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. In St Buryan, that work is shaped by the place itself — St Buryan is an inland Penwith village with one of Cornwall's most substantial parish churches and a tight Conservation Area covering the churchyard and adjoining cottages, with a building stock that leans toward granite churchyard cottages and modern AONB-sensitive infill.
St Buryan sits in Penwith — covering TR19 from Sennen, Lamorna outward.
- Conservation Area
- Cornwall AONB
- Rural / open-countryside policy area
- ✓ Plain-English feasibility before any drawings
- ✓ 30+ years of Cornwall Council approvals
- ✓ Local to Penwith — not a national franchise
- ✓ Same team on paper as on site
Who this is for
St Buryan runs the full mix — owner-occupier, holiday-let, commercial and the occasional smallholding — so we scope every extension enquiry from the use-class up.
Local watch-list
St Buryan-specific issues we screen on the first visit.
Watch #1
Conservation Area material and fenestration controls in central St Buryan
Watch #2
AONB landscape-impact scrutiny on visible elevations
Watch #3
Tighter Local Plan tests on isolated rural dwellings
Local proof — Most St Buryan homeowners come to us after a extension quote elsewhere felt vague on planning — we lead with feasibility instead.
Get a free feasibility viewFAQs
St Buryan Extensions — local questions answered.
- 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. In St Buryan specifically, we'd start by checking the Conservation Area boundary before committing to a direction.
- 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.
- 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.
- 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.
Local context
Why St Buryan is its own job.
The planning backdrop in Penwith is real, not abstract: conservation Area covers the village core; AONB across the parish. The church (Grade I) and surrounding curtilage shape design considerations on most central sites. For extension specifically, parts of St Buryan sit within a designated Conservation Area, which means materials, fenestration and roof pitches all need to read sympathetically with the existing streetscape; the surrounding landscape falls inside the Cornwall Area of Outstanding Natural Beauty, so massing, height and landscape impact carry extra weight in any planning decision; 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. Treat the TR19 parish brief as the design brief and the St Buryan application has somewhere to land. Whether the project is on granite churchyard cottages in the centre or further out toward Sennen, the extension response is locally tuned.
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 St Buryan.
01
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.
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
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.
Our process
How a St Buryan 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.
Local fabric
Why St Buryan homeowners pick a local studio for extension.
Building stock
Across St Buryan (TR19) we work on granite churchyard cottages, Victorian rectory-style houses, post-war bungalows, modern AONB-sensitive infill. Each stock type drives a different extension response — granite churchyard cottages in particular needs careful detailing here.
Parish & policy
St Buryan is its own town in Penwith, with planning history that's specific to the TR19 catchment.
Coverage
We cover TR19 from our studio, with regular extension jobs also running in Sennen, Lamorna, Porthcurno. Most St Buryan site visits get booked within the same week.
What does a first St Buryan consultation cost?
Nothing. We come to the property, walk the site, talk through what works on a TR19 plot and follow up with a written feasibility note inside a week — no obligation either way.
Request a free visitOther services in St Buryan
Nearby places we cover
The extension jobs we're proudest of in St Buryan are the ones where the planning route was clear before a single elevation was drawn.