West Cornwall · TR13
Extensions for Breage (TR13)
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. Breage sits in West Cornwall, and that geography ends up in the drawings — Breage is a former mining settlement in the TR13 area, with granite terraces, chapel buildings and industrial landscape character still visible, with a building stock that leans toward workers cottages and miners cottages.
Breage sits in West Cornwall — covering TR13 from Helston, Ashton, Sithney outward.
- Conservation Area
- Cornish Mining World Heritage Site
- ✓ One studio — design, planning and build under one roof
- ✓ Local to West Cornwall — not a national franchise
- ✓ Measured-survey accuracy from day one
- ✓ Fixed-fee planning packages, no surprise invoices
Our process
How a Breage 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 proof — We typically have one or two extension jobs live in the TR13 area at any time, so the local planning officers know our drawings on sight.
Get a free feasibility viewWhat we focus on
Extensions considerations specific to Breage.
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.
Local context
Why Breage is its own job.
In Breage the planning picture is specific: mining heritage, old plot widths and traditional materials make proportion and detailing more important than generic extension templates. For extension specifically, parts of Breage sit within a designated Conservation Area, which means materials, fenestration and roof pitches all need to read sympathetically with the existing streetscape; the wider area forms part of the Cornish Mining World Heritage Site, which adds a heritage assessment layer to most material changes. That local reading is what makes a Breage (TR13) project different from a generic Cornwall scheme — and is the whole reason we work this way. On workers cottages in particular — the kind you'll also find toward Nancegollan — 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.
Local watch-list
The TR13 constraints that shape a extension brief.
Watch #1
Conservation Area material and fenestration controls in central Breage
Watch #2
World Heritage Site assessment on changes visible in the mining landscape
Breage is part of Helston
Breage sits inside the Helston catchment — we cover both as one extension territory.
See Extensions in Helston →Local fabric
What sets a Breage extension brief apart.
Building stock
Across Breage (TR13) we work on miners cottages, granite terraces, chapel conversions, workers cottages, post-war estates. Each stock type drives a different extension response — workers cottages in particular needs careful detailing here.
Parish & policy
Breage sits in the parish of Breage, which matters for how parish-level consultation lands on a extension application.
Coverage
We cover TR13 from our studio, with regular extension jobs also running in Helston, Ashton, Sithney. Most Breage site visits get booked within the same week.
Can you handle both planning and build in Breage?
Yes — design, planning, building regs and full construction run under one roof. For clients with an existing Breage builder we can stop at a tender-ready Full Plans pack instead.
Request a free visitWho this is for
Breage runs the full mix — owner-occupier, holiday-let, commercial and the occasional smallholding — so we scope every extension enquiry from the use-class up.
FAQs
Breage Extensions — local questions answered.
- 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. In Breage specifically, we'd start by checking the Conservation Area boundary before committing to a direction.
- 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.
- 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.
- 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.
Other services in Breage
Nearby places we cover
Every Breage extension we work on is treated as a TR13 job in its own right — local fabric, local policy, local builders.