Lizard Peninsula · TR12
One studio for loft conversion in Cadgwith
A well-designed loft conversion adds a bedroom, an en-suite and useful storage to homes that were never built with the upper floor in mind — usually inside permitted development and almost always cheaper per square metre than extending sideways. The way we approach loft conversion in Cadgwith starts with a measured walk-round — Cadgwith is a harbour-side settlement in the TR12 area, with compact lanes, coastal exposure and a working-waterfront character, with a building stock that leans toward granite terraces and steep-lane houses.
Cadgwith sits in Lizard Peninsula — covering TR12 from The Lizard, Ruan Minor, Kuggar outward.
- Conservation Area
- Cornwall AONB
- Coastal exposure zone
- ✓ One studio — design, planning and build under one roof
- ✓ Local to Lizard Peninsula — not a national franchise
- ✓ Fixed-fee planning packages, no surprise invoices
- ✓ Measured-survey accuracy from day one
Our process
How a Cadgwith loft conversion project runs.
Step 1
Feasibility
Roof, headroom, stair landing and structural assessment.
Step 2
Design
Layout options that respect the staircase, headroom and bathroom positioning.
Step 3
Approvals
Planning or permitted development confirmation, plus building regs.
Step 4
Build
Sequenced to keep the family living downstairs throughout most of the work.
Step 5
Handover
Finish, snag, certify, hand over the keys.
Loft conversions typically run six to eighteen weeks on site depending on type, with four to eight weeks of design and approvals beforehand.
Local proof — Recent loft conversion enquiries from Cadgwith have clustered around granite terraces — we know the route through Cornwall Council on these.
Get a free feasibility viewWhat we focus on
Loft Conversions considerations specific to Cadgwith.
01
Cornish slate roofs come in a huge range of pitches — anything below a 30° pitch struggles to give usable headroom without raising the ridge.
02
Permitted development volume allowances are 40 cubic metres on a terrace and 50 on a detached or semi — but rear dormers in Conservation Areas often need full planning.
03
Building regs require minimum 2.0 metre headroom over the stairs and 30-minute fire protection on the existing stair enclosure — both shape the design.
04
Cut-roof Cornish properties are easier to convert than modern trussed roofs; the structural strategy varies completely.
Local context
Why Cadgwith is its own job.
Two things shape a Cadgwith application: parish character and policy. On policy — harbour settings bring tight access, overlooking, flood risk and heritage character into play on even modest alterations. For loft conversion specifically, parts of Cadgwith 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; coastal salt-laden air around Cadgwith drives detailing choices — fixings, render systems and timber treatments all need to be specified for exposure. Get that local reading right and the rest of the Cadgwith programme tends to run on time. On granite terraces in particular — the kind you'll also find toward Truro — the loft conversion brief always has to read the existing fabric first.
Planning note
Most Cornish loft conversions are permitted development — but a Certificate of Lawfulness is worth the extra week and small fee for resale protection.
Local watch-list
The TR12 constraints that shape a loft conversion brief.
Watch #1
Conservation Area material and fenestration controls in central Cadgwith
Watch #2
AONB landscape-impact scrutiny on visible elevations
Watch #3
Coastal exposure driving fixing, render and joinery spec
Cadgwith is part of The Lizard
Cadgwith sits inside the The Lizard catchment — we cover both as one loft conversion territory.
See Loft Conversions in The Lizard →Local fabric
Cadgwith loft conversions — the local-studio difference.
Building stock
Across Cadgwith (TR12) we work on harbour cottages, net lofts, granite terraces, holiday flats, steep-lane houses. Each stock type drives a different loft conversion response — granite terraces in particular needs careful detailing here.
Parish & policy
Cadgwith sits in the parish of Cadgwith, which matters for how parish-level consultation lands on a loft conversion application.
Coverage
We cover TR12 from our studio, with regular loft conversion jobs also running in The Lizard, Ruan Minor, Kuggar. Most Cadgwith site visits get booked within the same week.
Can you handle both planning and build in Cadgwith?
Yes — design, planning, building regs and full construction run under one roof. For clients with an existing Cadgwith builder we can stop at a tender-ready Full Plans pack instead.
Request a free visitWho this is for
Cadgwith runs the full mix — owner-occupier, holiday-let, commercial and the occasional smallholding — so we scope every loft conversion enquiry from the use-class up.
FAQs
Cadgwith Loft Conversions — local questions answered.
- Will it add value?
- An extra bedroom and bathroom typically adds noticeably more value than the build cost in most Cornish markets — but the value matters less than the daily use you'll get from the space. In Cadgwith specifically, we'd start by checking the Conservation Area boundary before committing to a direction.
- How much does a loft conversion cost?
- A simple Velux conversion starts around £30,000 in Cornwall; a rear dormer with en-suite typically runs £45,000 to £65,000; hip-to-gable and mansards more. Stair location and bathroom complexity drive most of the cost.
- How long does a loft conversion take?
- Allow six to ten weeks on site for a Velux conversion, eight to fourteen weeks for a dormer, twelve to eighteen weeks for hip-to-gable. Add four to eight weeks for design and regs beforehand.
- Can I live downstairs while it's built?
- Yes — most loft conversions are built with the family staying in the house. There'll be a couple of disruptive days when the staircase comes through, but the bulk of the work is upstairs.
- Will I have enough headroom?
- We need a minimum 2.2 metres ridge-to-joist before alterations to make a usable conversion straightforward. Less than that and we'd consider raising the ridge, which is a planning conversation, not a permitted development one.
Other services in Cadgwith
Nearby places we cover
The TR12 stretch of Lizard Peninsula has its own rhythm; our loft conversion work respects it, and Cornwall Council usually responds in kind.