West Cornwall · TR18
Loft Conversions in Chyandour
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. A Chyandour brief starts on the street, not the screen — Chyandour is a harbour-side settlement in the TR18 area, with compact lanes, coastal exposure and a working-waterfront character, with a building stock that leans toward granite terraces and steep-lane houses.
Chyandour sits in West Cornwall — covering TR18 from Penzance, Sancreed, New Mill outward.
- Conservation Area
- Coastal exposure zone
- ✓ Fixed-fee planning packages, no surprise invoices
- ✓ Measured-survey accuracy from day one
- ✓ One studio — design, planning and build under one roof
- ✓ Local to West Cornwall — not a national franchise
Local watch-list
What usually catches loft conversion projects out in Chyandour.
Watch #1
Conservation Area material and fenestration controls in central Chyandour
Watch #2
Coastal exposure driving fixing, render and joinery spec
Who this is for
Chyandour 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.
Local context
Why Chyandour is its own job.
Harbour settings bring tight access, overlooking, flood risk and heritage character into play on even modest alterations. For loft conversion specifically, parts of Chyandour sit within a designated Conservation Area, which means materials, fenestration and roof pitches all need to read sympathetically with the existing streetscape; coastal salt-laden air around Chyandour drives detailing choices — fixings, render systems and timber treatments all need to be specified for exposure. So every Chyandour job runs as a TR18-specific piece of work — local policy, local fabric, local builders. Most of our loft conversion work in Chyandour lands on granite terraces, with detailing that has to nod to the wider Sancreed streetscape.
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.
What we focus on
Loft Conversions considerations specific to Chyandour.
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
Stairs eat space — a loft conversion lives or dies by where the new staircase lands and what it costs you on the floor below.
03
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.
04
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.
Our process
How a Chyandour 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.
FAQs
Chyandour 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 Chyandour 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.
- Do I need planning permission for a loft conversion?
- Often no — most loft conversions sit inside permitted development on a typical Cornish house. Conservation Areas, AONB and properties on principal elevations need full planning, and we'll confirm at first review.
- 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.
Chyandour is part of Penzance
Chyandour sits inside the Penzance catchment — we cover both as one loft conversion territory.
See Loft Conversions in Penzance →Local proof — Most Chyandour loft conversion clients we work with are second-time builders — they've seen the templated approach fail once already.
Get a free feasibility viewOther services in Chyandour
Nearby places we cover
For Chyandour homeowners weighing up a loft conversion, the right starting point is honest feasibility — that's what we lead with, before any drawings.