South Cornwall · TR11
Loft Conversions that reads Durgan properly
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 Durgan version of this work has its own character — Durgan 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 detached houses and converted barns.
Durgan sits in South Cornwall — covering TR11 from Mawnan Smith, Mawnan, Truro outward.
- Conservation Area
- Cornwall AONB
- Coastal exposure zone
- ✓ One studio — design, planning and build under one roof
- ✓ Local to South Cornwall — not a national franchise
- ✓ Same team on paper as on site
- ✓ Fixed-fee planning packages, no surprise invoices
Local watch-list
The TR11 constraints that shape a loft conversion brief.
Watch #1
Conservation Area material and fenestration controls in central Durgan
Watch #2
AONB landscape-impact scrutiny on visible elevations
Watch #3
Coastal exposure driving fixing, render and joinery spec
Who this is for
Durgan 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 Durgan is its own job.
Around Durgan (TR11), 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 Durgan 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 Durgan drives detailing choices — fixings, render systems and timber treatments all need to be specified for exposure. Reading Durgan properly up front saves more time than any drawing tool ever will. Most of our loft conversion work in Durgan lands on detached houses, with detailing that has to nod to the wider Mawnan 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 Durgan.
01
Cut-roof Cornish properties are easier to convert than modern trussed roofs; the structural strategy varies completely.
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
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
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.
Our process
How a Durgan 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
Durgan 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 Durgan 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.
- 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.
Durgan is part of Mawnan Smith
Durgan sits inside the Mawnan Smith catchment — we cover both as one loft conversion territory.
See Loft Conversions in Mawnan Smith →Local proof — Most Durgan 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 Durgan
Nearby places we cover
If you're considering a loft conversion project in the TR11 area, our deep understanding of Durgan's architectural character can help navigate the process smoothly.