North Cornwall · TR8
Holywell Bay 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. In Holywell Bay, that work is shaped by the place itself — Holywell Bay is a holiday-coast settlement in the TR8 area, with strong second-home demand and exposed coastal building conditions, with a building stock that leans toward detached houses and holiday lets.
Holywell Bay sits in North Cornwall — covering TR8 from Newquay, Cubert, St Newlyn East outward.
- Cornwall AONB
- Coastal exposure zone
- ✓ Free first site visit, no obligation
- ✓ Plain-English feasibility before any drawings
- ✓ 30+ years of Cornwall Council approvals
- ✓ AONB experience built into the fee
Who this is for
Holywell Bay 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
Local snags worth knowing before drawing a Holywell Bay extension.
Watch #1
AONB landscape-impact scrutiny on visible elevations
Watch #2
Coastal exposure driving fixing, render and joinery spec
Local proof — Recent extension enquiries from Holywell Bay have clustered around detached houses — we know the route through Cornwall Council on these.
Get a free feasibility viewFAQs
Holywell Bay Extensions — local questions answered.
- 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. In Holywell Bay specifically, we'd start by checking AONB landscape sensitivity 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.
- 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.
- 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.
Local context
Why Holywell Bay is its own job.
Locally, planning scrutiny often focuses on visual impact, occupancy, parking, overlooking and whether replacement buildings respect the coastal edge. 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 Holywell Bay drives detailing choices — fixings, render systems and timber treatments all need to be specified for exposure. Which is why we scope Holywell Bay projects parish-up, not template-down — the TR8 context shapes the design from day one. Whether the project is on detached houses 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 Holywell Bay.
01
Drainage on older Cornish properties is rarely on a clean modern map; CCTV survey before design is often money well spent.
02
Wind and sea-spray exposure can drive material choices on west-facing extensions; we detail accordingly.
03
Cornish granite and slate-hung walls react differently to new openings than modern brickwork — lintel choice and structural sequencing matter.
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 Holywell Bay 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 Holywell Bay homeowners pick a local studio for extension.
Building stock
Across Holywell Bay (TR8) we work on coastal bungalows, holiday lets, second homes, detached houses, replacement dwellings. Each stock type drives a different extension response — detached houses in particular needs careful detailing here.
Parish & policy
Holywell Bay sits in the parish of Holywell Bay, 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, St Newlyn East. Most Holywell Bay site visits get booked within the same week.
What does a first Holywell Bay 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 visitHolywell Bay is part of Newquay
Holywell Bay sits inside the Newquay catchment — we cover both as one extension territory.
See Extensions in Newquay →Other services in Holywell Bay
Nearby places we cover
The extension jobs we're proudest of in Holywell Bay are the ones where the planning route was clear before a single elevation was drawn.