North Cornwall · TR8
Tregurrian extension — feasibility first, drawings second
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. On a Tregurrian site, the brief always meets the place — Tregurrian is a small rural hamlet in the TR8 area, with scattered homes, lanes and a deliberately quiet settlement pattern, with a building stock that leans toward bungalows and farmhouses.
Tregurrian sits in North Cornwall — covering TR8 from Newquay, Cubert, Holywell Bay outward.
- Cornwall AONB
- Coastal exposure zone
- ✓ AONB experience built into the fee
- ✓ Cornwall Council regulars across every sub-area
- ✓ Free first site visit, no obligation
- ✓ Plain-English feasibility before any drawings
Who this is for
Tregurrian 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
The TR8 constraints that shape a extension brief.
Watch #1
AONB landscape-impact scrutiny on visible elevations
Watch #2
Coastal exposure driving fixing, render and joinery spec
Local proof — Our North Cornwall workload means a Tregurrian extension project never has to wait for an out-of-county team to drive down.
Get a free feasibility viewFAQs
Tregurrian Extensions — local questions answered.
- 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. In Tregurrian specifically, we'd start by checking AONB landscape sensitivity before committing to a direction.
- 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.
- 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.
- 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.
Local context
Why Tregurrian is its own job.
Locally, the main planning test is usually whether the proposal remains subordinate, locally detailed and acceptable on access, drainage and neighbour amenity. For extension specifically, 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; coastal salt-laden air around Tregurrian drives detailing choices — fixings, render systems and timber treatments all need to be specified for exposure. Which is why we scope Tregurrian projects parish-up, not template-down — the TR8 context shapes the design from day one. Whether the project is on bungalows in the centre or further out toward Newquay, 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 Tregurrian.
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
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
Drainage on older Cornish properties is rarely on a clean modern map; CCTV survey before design is often money well spent.
04
Cornish granite and slate-hung walls react differently to new openings than modern brickwork — lintel choice and structural sequencing matter.
Our process
How a Tregurrian 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 Tregurrian homeowners pick a local studio for extension.
Building stock
Across Tregurrian (TR8) we work on cottages, farmhouses, converted barns, bungalows, small infill homes. Each stock type drives a different extension response — bungalows in particular needs careful detailing here.
Parish & policy
Tregurrian sits in the parish of Tregurrian, which matters for how parish-level consultation lands on a extension application.
Coverage
We cover TR8 from our studio, with regular extension jobs also running in Newquay, Cubert, Holywell Bay. Most Tregurrian site visits get booked within the same week.
What does a first Tregurrian consultation cost?
Nothing. We come to the property, walk the site, talk through what works on a TR8 plot and follow up with a written feasibility note inside a week — no obligation either way.
Request a free visitTregurrian is part of Newquay
Tregurrian sits inside the Newquay catchment — we cover both as one extension territory.
See Extensions in Newquay →Other services in Tregurrian
Nearby places we cover
From initial feasibility to final handover, we manage extension projects across Tregurrian with careful attention to what makes North Cornwall unique.