North Cornwall · PL30
Design, planning and build for Temple extension
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 PL30 site visit comes before a Temple sketch, every time — Temple 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 converted barns and isolated houses.
Temple sits in North Cornwall — covering PL30 from Bodmin, St Breward, Washaway outward.
- Rural / open-countryside policy area
- ✓ rural policy area experience built into the fee
- ✓ Same team on paper as on site
- ✓ Fixed-fee planning packages, no surprise invoices
- ✓ Measured-survey accuracy from day one
Local proof — We typically have one or two extension jobs live in the PL30 area at any time, so the local planning officers know our drawings on sight.
Get a free feasibility viewLocal context
Why Temple is its own job.
Cornwall Council's lens on Temple is consistent: 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's why we treat every Temple project as a PL30-area job first — not a generic Cornwall job with a postcode bolted on. The converted barns that dominate Temple (and continue out toward Washaway) set the tone for any extension scheme here.
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 Temple.
01
Wind and sea-spray exposure can drive material choices on west-facing extensions; we detail accordingly.
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.
Our process
How a Temple 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 Temple homeowners pick a local studio for extension.
Building stock
Across Temple (PL30) we work on stone cottages, farm buildings, isolated houses, converted barns, small rural infill. Each stock type drives a different extension response — converted barns in particular needs careful detailing here.
Parish & policy
Temple sits in the parish of Temple, which matters for how parish-level consultation lands on a extension application.
Coverage
We cover PL30 from our studio, with regular extension jobs also running in Bodmin, St Breward, Washaway. Most Temple site visits get booked within the same week.
How quickly can you visit a Temple site?
Usually within the same week. Temple (PL30) is on our regular North Cornwall run, alongside Bodmin, St Breward, Washaway. First visits are free and you'll get an honest feasibility view inside seven days.
Request a free visitFAQs
Temple 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 Temple specifically, we'd start by checking the latest parish-level planning history 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.
- 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.
- 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.
Temple is part of Bodmin
Temple sits inside the Bodmin catchment — we cover both as one extension territory.
See Extensions in Bodmin →Other services in Temple
Nearby places we cover
Most Temple extension enquiries start with one honest conversation about what's actually allowed — and that conversation costs nothing.