South Cornwall · TR10
Loft Conversions in Mabe Burnthouse
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. Reading Mabe Burnthouse on the ground is half of the loft conversion job — Mabe Burnthouse is a residential village west of Penryn with strong commuter demand from the Falmouth and Truro areas and significant late-twentieth-century estate expansion, with a building stock that leans toward modern Persimmon and Bovis estates and older granite cottages on the village fringes.
Mabe Burnthouse sits in South Cornwall — covering TR10 from Penryn, Constantine, Ponsanooth outward.
- ✓ Local to South Cornwall — not a national franchise
- ✓ Same team on paper as on site
- ✓ Fixed-fee planning packages, no surprise invoices
- ✓ Measured-survey accuracy from day one
Local watch-list
Local snags worth knowing before drawing a Mabe Burnthouse loft conversion.
Watch #1
Parish-level character expectations that don't appear on any policy map
Who this is for
Mabe Burnthouse 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 Mabe Burnthouse is its own job.
Outside Conservation Area and AONB but the wider parish includes designated areas. Mabe parish operates active input on edge-of-village schemes; granite quarrying heritage shapes some site planning. For loft conversion specifically, Mabe Burnthouse sits outside the headline designations, which usually gives a slightly more flexible starting point — but parish-level character still matters. So every Mabe Burnthouse job runs as a TR10-specific piece of work — local policy, local fabric, local builders. Most of our loft conversion work in Mabe Burnthouse lands on modern Persimmon and Bovis estates, with detailing that has to nod to the wider Stithians 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 Mabe Burnthouse.
01
Stairs eat space — a loft conversion lives or dies by where the new staircase lands and what it costs you on the floor below.
02
Cornish slate roofs come in a huge range of pitches — anything below a 30° pitch struggles to give usable headroom without raising the ridge.
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.
Our process
How a Mabe Burnthouse 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
Mabe Burnthouse Loft Conversions — local questions answered.
- 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. In Mabe Burnthouse specifically, we'd start by checking the latest parish-level planning history before committing to a direction.
- 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.
- 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.
- 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.
Mabe Burnthouse is part of Penryn
Mabe Burnthouse sits inside the Penryn catchment — we cover both as one loft conversion territory.
See Loft Conversions in Penryn →Local proof — Our South Cornwall workload means a Mabe Burnthouse loft conversion project never has to wait for an out-of-county team to drive down.
Get a free feasibility viewOther services in Mabe Burnthouse
Nearby places we cover
On a Mabe Burnthouse site the success of a loft conversion is decided in week one — by reading the constraints right, not by drawing them away.