Garage Conversion Price Guide – Isle of Man
Garage conversions are one of the highest-value upgrades you can make to your home. This guide gives you transparent pricing, what’s included, optional upgrades, and real examples — so you know exactly what to expect before starting your project.
Transparent Pricing for Every Type of Garage Conversion
Basic Garage Conversion
From £12,000–£18,000
A clean, compliant, functional conversion ideal for home offices, gyms, hobby rooms or occasional-use spaces.
Floor System
• Liquid screed with fibre reinforcement applied over existing concrete slab
• DPC membrane installed
• Smooth, level base
• Usually retains the step down from the main house floor
Ceiling & Walls
• Interior walls smooth skim finish
• Pendant light or basic downlights
• Insulated External stud walls with skim finish
Electrics & Heating
• Basic electrical package (4–6 downlights, 2–3 sockets)
• Standard radiator or electric panel heater
Finishes
• Standard skirting and architraves
• Laminate, carpet-ready or entry-level LVT flooring
• White internal door
Best for:
Clients wanting a straightforward, comfortable room without premium finishes.
Full Garage Conversion
From £18,000–£28,000
(Most Popular)
Creates a room that feels fully integrated with the home.
Floor System
• Raised insulated timber floor system
• PIR insulation between treated timbers
• Structural 18mm chipboard/ply floor
• Service void for wiring, plumbing and media cables
• Allows finished floor height to match the main house level
Ceiling & Walls
• Fully insulated dropped ceiling
• Premium LED downlight layout
• Optional dimmers
• Improved acoustic insulation
• Smooth plaster skim throughout
Electrics & Heating
• Enhanced electrical package (USB sockets, TV points, external lighting, additional outlets)
• Upgraded heating solution (enhanced radiator or small UFH area)
Finishes
• Premium skirting and architrave options
• Choice of premium laminate, LVT or engineered flooring
• Upgraded internal doors (oak veneer or modern styles)
Best for:
Bedrooms, offices, lounges, utility room or even a kids’ rooms — anywhere used daily. Feels like a true extension, not a converted garage.
Premium Garage Conversion
£28,000–£45,000
A high-end, designer-level conversion with luxury finishes.
Floor System
• Everything in Full, plus:
• Acoustic insulation upgrades
• Optional underfloor heating
• Luxury LVT or engineered oak flooring
Ceiling & Lighting
• Full LED downlight layout
• Feature lighting options (LED strip, pelmets, mood lighting)
• Smart home integration (app/voice-controlled/dimmable)
• Acoustic enhancements for cinema/studio rooms
Electrics & Heating
• Expanded electrical spec (media wall wiring, data points, Wi-Fi boosters)
• Premium heating or AC options
Finishes
• High-end internal doors
• Aluminium or anthracite window/door upgrades
• Bespoke joinery (media walls, wardrobes, storage)
• External improvements (cladding, K-render, façade upgrades)
Best for:
Airbnb rooms, studios, luxury bedrooms, disabled friendly for the elderly — clients wanting a showpiece conversion.
Understanding the Cost Breakdown
A clear explanation of what goes into a safe, warm, fully compliant garage conversion — so you know exactly where your investment is going.
Structural Work & Building Regulations
Every proper garage conversion starts with essential structural work: removing the garage door, installing new footings, fitting a compliant window/door, and upgrading the walls to meet building regulations. This ensures the new room is safe, warm and built to last.
Insulation & Comfort Upgrades
Garages are naturally cold and draughty. Bringing them up to habitable-room standard means insulating the floor, walls and ceiling properly. This improves comfort, reduces heat loss and keeps the space warm all year round.
Heating, Electrics & Lighting
A conversion requires a complete electrical upgrade — lighting layout, additional sockets, media points and a suitable heating option. Everything must meet current safety standards and be integrated neatly into the new room layout.
Damp-Proofing & Moisture Control
Garages often sit below the rest of the house and can suffer from damp. Proper membranes, airflow management and moisture protection are essential to prevent mould, cold patches and long-term damage.
High-Quality Internal Finishes
To make the space feel like part of the home, not an old garage, we finish with plastered walls, quality flooring, new skirting and a modern internal door. The goal is a room that blends seamlessly into your existing layout.
Full Project Management
A garage conversion requires joiners, electricians, plasterers, window installers, heating engineers and building control inspections. We handle the entire process, coordinate all trades and keep your home clean and tidy throughout.
WHAT’S INCLUDED IN EVERY GARAGE CONVERSION?
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Structural & Compliance Essentials
Every conversion includes removal of the garage door, new footing where required, and installation of a compliant uPVC door/window. All work meets current building regulations.
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Insulated External Walls
Timber studwork, PIR insulation, vapour control layer and a smooth skim finish — keeping the room warm, compliant and ready for year-round use.
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Fully Insulated Ceiling
A new dropped or levelled ceiling frame with insulation and plaster skim. Warmer, quieter, and visually identical to a proper room in the house.
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Modern Electrical Package
New circuits, LED lighting layout, properly positioned sockets and neatly integrated wiring. Built to today’s standards — no old garage wiring reused.
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Heating Provision
Electric panel heater, radiator feeds or provisions for upgraded heating. Ensures the space is truly habitable, not just “converted.”
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Flooring Preparation
Subfloor levelled or prepared depending on your package, with a damp-proof membrane where required. Ready for LVT, laminate or carpet.