Stone barn
Class Q to 4-bed home
Modbury, PL21Case study →
Barn Conversions
Barn Conversions across Devon
Sympathetic conversion of stone, cob and steel-frame agricultural buildings into characterful homes — across South Devon, the South Hams and West Devon.
- Fully insured
- 30+ yrs experience
- South Hams
- Fully Insured
- Building Regs Approved
- 30+ Yrs Combined Experience
- 12-Month Workmanship Warranty
- Same-Day Reply
Overview
A build that fits your home, your street, your life.
A good barn conversion respects what's already there. Original stonework, oak trusses and cart-entry openings are what give the finished home its soul — they're not obstacles to be ripped out.
We work with planning consultants and conservation officers across South Hams District Council, West Devon Borough Council and Plymouth City Council on Class Q prior approval, full planning and listed building consent applications.
From bare stone shell to fully serviced, insulated and finished home — including off-grid drainage, ground-source heating and bespoke joinery — we deliver barn conversions that work as 21st-century homes without losing their agricultural character.
Benefits
Why homeowners choose this route.
01
Original character preserved
We retain stonework, beams, sliding doors and cart openings wherever the structure allows.
02
Class Q expertise
Experienced with permitted barn-to-dwelling conversions under Class Q prior approval.
03
Off-grid services
Septic tanks, treatment plants, boreholes, ASHP and solar PV designed in from day one.
04
Modern thermal performance
Internal lime-compatible insulation strategies that keep walls breathing while hitting Building Regs.
05
Listed-building experience
Sensitive detailing for Grade II conversions, working alongside conservation officers.
06
Bespoke joinery
Hardwood-framed glazing, oak staircases and steel-and-oak galleries made to fit each opening.
Our process
From first call to final handover.
- 01
Feasibility & planning
Structural survey, Class Q assessment or full planning strategy with our consultant team.
- 02
Design & detailing
Architecture, M&E design, off-grid services strategy and conservation-led specification.
- 03
Shell & services
Structural repairs, lime pointing, roof works, slab and underfloor heating, off-grid services.
- 04
Fit-out & handover
Joinery, glazing, kitchens, bathrooms, decoration, landscaping and EPC sign-off.
Why MAG
Plymouth builders you can actually rely on.
A directly employed core team, fixed-price quotes and a project manager you can call any working day. We don't disappear once the deposit clears.
- Two decades of barn and agricultural conversions across Devon
- Direct relationships with South Hams and West Devon planning teams
- In-house structural and conservation knowledge
- Lime mortar, insulation and breathability properly understood
- Off-grid services design — drainage, heating, water, solar
- Single point of contact from feasibility through to landscaping
Recent projects
A look at our work.
Steel-frame
Open-plan family conversion
Tavistock, PL19Case study →
Listed Grade II
Cob & stone restoration
South Brent, TQ10Case study →
FAQs
Common questions.
Got something specific? Send us a message and we'll come back the same working day.
- What is Class Q and does my barn qualify?
- Class Q is a Permitted Development right that allows certain agricultural buildings to be converted to dwellings without full planning. Strict criteria apply — structure, location, size and prior agricultural use. We'll assess yours before you spend money on consultants.
- Do you work outside Plymouth?
- Yes — barn conversions take us across the South Hams, West Devon, Tavistock, Modbury, Yealmpton and as far as the edges of Dartmoor. We're set up for rural sites.
- How are services brought to a remote barn?
- We design off-grid as standard: septic tank or treatment plant, borehole or mains extension, ASHP or biomass heating, solar PV with battery storage. All sized at the design stage.
- Can you keep the original beams and stonework?
- Wherever structurally safe, yes. We assess each truss and stretch of wall, repair what's salvageable and only replace what's truly beyond saving.
Barn conversion enquiry
Get a free, no-obligation quote.
Send us the location and a few photos of the barn. We'll come back with a feasibility view and arrange a site visit anywhere across Devon.
01752 638877
Mon–Fri 8am–6pm · Sat 9am–1pm