South Cornwall · TR11
One studio for loft conversion in Mylor Harbour
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. Working in Mylor Harbour means starting from the TR11 context — Mylor Harbour is a creekside settlement in the TR11 area, with waterside homes, wooded valleys and narrow-lane access shaping the brief, with a building stock that leans toward creekside cottages and boat sheds.
Mylor Harbour sits in South Cornwall — covering TR11 from Mylor Bridge, Truro, St Austell outward.
- Conservation Area
- Cornwall AONB
- Coastal exposure zone
- ✓ Same team on paper as on site
- ✓ Fixed-fee planning packages, no surprise invoices
- ✓ Conservation Area experience built into the fee
- ✓ Local to South Cornwall — not a national franchise
Our process
How a Mylor Harbour 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 — Our South Cornwall workload means a Mylor Harbour loft conversion project never has to wait for an out-of-county team to drive down.
Get a free feasibility viewWhat we focus on
Loft Conversions considerations specific to Mylor Harbour.
01
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.
02
Cut-roof Cornish properties are easier to convert than modern trussed roofs; the structural strategy varies completely.
03
Stairs eat space — a loft conversion lives or dies by where the new staircase lands and what it costs you on the floor below.
04
Cornish slate roofs come in a huge range of pitches — anything below a 30° pitch struggles to give usable headroom without raising the ridge.
Local context
Why Mylor Harbour is its own job.
Two things shape a Mylor Harbour application: parish character and policy. On policy — creekside ecology, flood risk, trees and views across the water often matter as much as the building form itself. For loft conversion specifically, parts of Mylor Harbour 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 Mylor Harbour 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 Mylor Harbour programme tends to run on time. On creekside cottages in particular — the kind you'll also find toward Newquay — 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
Mylor Harbour-specific issues we screen on the first visit.
Watch #1
Conservation Area material and fenestration controls in central Mylor Harbour
Watch #2
AONB landscape-impact scrutiny on visible elevations
Watch #3
Coastal exposure driving fixing, render and joinery spec
Mylor Harbour is part of Mylor Bridge
Mylor Harbour sits inside the Mylor Bridge catchment — we cover both as one loft conversion territory.
See Loft Conversions in Mylor Bridge →Local fabric
One TR11 studio, one loft conversion job — start to finish.
Building stock
Across Mylor Harbour (TR11) we work on creekside cottages, detached houses, boat sheds, converted barns, waterside homes. Each stock type drives a different loft conversion response — creekside cottages in particular needs careful detailing here.
Parish & policy
Mylor Harbour sits in the parish of Mylor Harbour, which matters for how parish-level consultation lands on a loft conversion application.
Coverage
We cover TR11 from our studio, with regular loft conversion jobs also running in Mylor Bridge, Truro, St Austell. Most Mylor Harbour site visits get booked within the same week.
Can you handle both planning and build in Mylor Harbour?
Yes — design, planning, building regs and full construction run under one roof. For clients with an existing Mylor Harbour builder we can stop at a tender-ready Full Plans pack instead.
Request a free visitWho this is for
Mylor Harbour 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
Mylor Harbour Loft Conversions — local questions answered.
- 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. In Mylor Harbour specifically, we'd start by checking the Conservation Area boundary before committing to a direction.
- 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.
- 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.
- 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.
- 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.
Other services in Mylor Harbour
Nearby places we cover
If you're balancing ambition against TR11 planning realism, our Mylor Harbour loft conversion work threads that needle without the usual drama.