Lizard Peninsula · TR12 · Cornwall Council West
Loft Conversions in Mawgan
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 Mawgan version of this work has its own character — Mawgan is a rural parish in the TR12 area, with farmsteads, lanes and scattered homes defining its built character, with a building stock that leans toward farmhouses and rural cottages.
Mawgan sits in Lizard Peninsula — just off the A394; covering TR12 from Helston, Breage, Ashton outward.
- Rural / open-countryside policy area
- ✓Measured-survey accuracy from day one
- ✓One studio — design, planning and build under one roof
- ✓Local to Lizard Peninsula — not a national franchise
- ✓Same team on paper as on site
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Free Mawgan feasibility call
Tell us about your loft conversion. We reply within 1 working day — no obligation.
Local watch-list
Local snags worth knowing before drawing a Mawgan loft conversion.
Watch #1
Local Plan tests on isolated dwellings, plus lane access for plant and deliveries around Mawgan
Who this is for
In Mawgan the loft conversion brief is almost always a private homeowner improving a forever home — so we lead with feasibility and long-term value, not show-home rhetoric.
Scope
The parts of the job we can take on in Mawgan
These stages can be bought separately. Most TR12 projects use three of them.
Full design and build
One contract from first sketch to handover, with the same team on paper and on site.
Building regulation drawings
Full Plans sets with sections, construction notes and coordinated structural information.
Construction and technical drawings
1:10 and 1:20 details for the parts of the job builders normally have to guess at.
Structural coordination
Calculations coordinated with the drawings so building control sees one consistent story.
Planning application drawings
Existing and proposed plans, elevations, site and block plans drawn to validation standard.
Who this is for
What we can genuinely back up in Mawgan
- Design and build are offered from the same studio, which means the person answering your Mawgan questions has seen the detail built.
- Applications for Mawgan are handled through Cornwall Council, with Truro the nearest planning office we deal with regularly.
- Drawings, planning and building regulations are all produced in-house, so a loft conversion enquiry does not get passed between firms.
Planning rules change and every site is different. For the final position on your address, check with Cornwall Council as the local planning authority or the Planning Portal.
Keep reading
Other work we do around Mawgan
Mawgan is covered from our Helston run. Being a smaller place, the local detail matters more than the headline policy: lane access, neighbour proximity and what the immediate street already looks like.
Page purpose
Drawings only, or drawings through to handover in Mawgan?
Both routes are open on a TR12 project, and the honest answer depends on whether you already have a builder you trust. Plenty of Mawgan clients take the drawings, tender them locally, then come back to us for the build if the numbers do not stack up.
- Route one: feasibility, planning and a tender-ready technical pack
- Route two: the same pack, then the build under one contract
- Either way the survey and feasibility work is identical, so the decision can wait
- Fees quoted per stage against the TR12 scope, not as one opaque figure
Local context
Why Mawgan is its own job.
Open-countryside policy, access lanes, drainage and agricultural building history all need to be addressed before drawings go too far. For loft conversion specifically, Cornwall Council's Local Plan applies tighter tests to isolated rural dwellings here, so design rationale and policy fit need to be set out clearly from the outset. So every Mawgan job runs as a TR12-specific piece of work — local policy, local fabric, local builders. Most of our loft conversion work in Mawgan lands on farmhouses, with detailing that has to nod to the wider Breage 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 Mawgan.
01
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.
02
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.
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.
Quick check
Want a straight answer on whether your Mawgan project is worth pursuing?
Send a few details — we'll come back within 1 working day with a plain-English view on planning risk, likely cost band and whether it's a project we'd take on.
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Get a free feasibility view
For projects in Mawgan and the TR12 area.
Our process
How a Mawgan 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
Mawgan 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 Mawgan specifically, we'd start by checking the latest parish-level planning history before committing to a direction.
- We live in the house. Can a loft conversion in Mawgan be done while we stay put?
- Usually yes for single-storey and rear work, with a temporary kitchen or bathroom arrangement agreed before the start. Whole-house remodels and roof work in Mawgan are often easier if you move out for a few weeks. We set that expectation at feasibility stage rather than halfway through.
- 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 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.
Mawgan is part of Helston
Mawgan sits inside the Helston catchment — we cover both as one loft conversion territory.
See Loft Conversions in Helston →Local proof — Most Mawgan homeowners come to us after a loft conversion quote elsewhere felt vague on planning — we lead with feasibility instead.
Get a free feasibility viewOther services in Mawgan
Nearby places we cover
Every Mawgan loft conversion we work on is treated as a TR12 job in its own right — local fabric, local policy, local builders. converted barns in particular need a tailored structural answer.
Walk us round your Mawgan site — free first visit Most Mawgan visits happen within the week.
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