S3+ Garden Studio From £10,020.00 Including VAT

3.8m x 3.5m

Available in Heritage, Signature, or Premium finishes
Fully-insulated for year-round use
Perfect as a garden office, pod, studio or retreat
Free delivery & fast 2–3 day installation
Handmade in Britain with a 10-year structural warranty

Choose your preference

No Planning Permission Required
Year-Round Thermal Comfort
Built-In Drainage & Roof Overhangs
Choice of Styles & Materials
Security as Standard
Flexible Payment & Assembly Options

No Planning Permission Required
Year-Round Thermal Comfort
Built-In Drainage & Roof Overhangs
Choice of Styles & Materials
Security as Standard
Flexible Payment & Assembly Options

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Why customers choose us?

Superior insulation for all-season use
Premium materials sourced and treated for longevity
Stunning external and internal finishes
Advanced IzoPanel roofing. Strong & thermally efficient
Quick and stable installation options
A beautiful, practical space for work or relaxation

Included as standard

Fully insulated walls, roof, and floor (up to 100mm thick thermal boards)
Premium 21mm redwood timber cladding with OSB internal finish
Reinforced PVC entry door with 28mm toughened double glazing
Multi-point locking system for enhanced security
Steel-coated internal ceiling lining for durability and a sleek finish
Anthracite Grey internal and external door/frame colour
Waterproof PVC vinyl flooring for a clean, modern look
Integrated PVC guttering and downpipe system
Steel ground feet or piles, suitable for hard and soft surfaces
Electrical first fix and lighting provisions
Full professional installation by our expert team

No planning permission required

Installing one of our garden rooms is typically hassle-free — and in most cases, you won’t need planning permission at all.

Thanks to their carefully considered dimensions and compliant design, our garden buildings fall under Permitted Development Rights for outbuildings in residential gardens. That means you can enjoy extra living or working space without the red tape.

S3+ Garden Studio

3.8 /5 2 total Reviews

3.8m x 3.5m

(All sizes are nominal)

Free Delivery in 10 working days

Specification

Cladding Preference

Clear

Groundworks *

Funding Option *

Your Location *

Assembly Preference

Accessibility Step *

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£0 Deposit

£0 due on completion of manufacture

£0 due on delivery & installation.

Call us on: 01642 989 742

S3+ Garden Room – Spacious, Stylish & Built for Year-Round Comfort

Enhance your garden with the S3+ Garden Room — a larger, beautifully crafted outdoor studio offering an impressive 3.8m x 3.5m footprint. Whether you’re setting up a professional workspace, wellness retreat, creative hub, or multi-use family room, the S3+ gives you the extra room to breathe, create, and thrive.

Why Choose the S3+ Garden Room?

Extended size for greater versatility – 3.8m x 3.5m internal layout
Choice of Heritage timber, Signature composite, or Premium vertical slatted cladding
Comprehensive insulation with thermal boards in walls, roof, and floor
Durable semi-gloss steel roof with sloped design and integrated guttering
Delivered within 10 working days and professionally installed in just 2–3 days

Designed and manufactured in the UK, every S3+ Garden Room is precision-built using premium materials and backed by our trusted 10-year structural warranty. Make more of your garden with a space that works for every season, every lifestyle, and every ambition.

Specification	S3+ Heritage, S3+ Signature, S3+ Premium
Cladding Preference	Anthracite Grey, Ivory, Redwood Timber, Silver Grey
Layout	S3 Window Left, S3 Window Right
Model	S3
Window Style	Full-height split window(s)
External Size	3800mm (W) x 2500mm (D) x 2410mm (H front) / 2310mm (H rear)
Internal Area	8.20m²
Door Style	Single Door\|French Doors\|Bi-Folding Doors
Insulation Type	25mm Thermal Board\|50mm Thermal Board\|100mm Roof Panels
Roof Overhang	500mm Front\|100mm Sides & Rear

Feature	Heritage	Signature	Premium
External Width	3800mm / 3.80m / 12.46ft	3800mm / 3.80m / 12.46ft	3800mm / 3.80m / 12.46ft
External Depth	3500mm / 3.50m / 11.48ft	3500mm / 3.50m / 11.48ft	3500mm / 3.50m / 11.48ft
Internal Area	11.78m²	11.78m²	11.37m²
Cladding Type	21mm Redwood Timber (Log-Lapped)	21mm Composite (Horizontal Embossed)	26mm Composite (Vertical Slatted)
Door Style	Single Entry Door with Side Light	French Doors	Aluminium Bi-Folding Doors
Glazing	28mm Toughened Double Glazing	28mm Toughened Double Glazing	28mm Toughened Double Glazing
Window Style	Full Height, Top-Opening	Full Height, Top-Opening	Full Height, Top-Opening
Roof Thickness	145mm insulated panel roof system	145mm insulated panel roof system	145mm insulated panel roof system
Wall Insulation	25mm Thermal Boards	25mm Thermal Boards	50mm Thermal Boards
Base & Flooring	143mm Base with PVC Vinyl Flooring	143mm Base with PVC Vinyl Flooring	143mm Base with PVC Vinyl Flooring
Foundation Options	Steel Ground Piles / Feet	Steel Ground Piles / Feet	Steel Ground Piles / Feet
Installation Time	2–3 Days	2–3 Days	2–3 Days
Delivery	Free within 10 working days	Free within 10 working days	Free within 10 working days
Warranty	10-Year Structural Warranty	10-Year Structural Warranty	10-Year Structural Warranty

What is the difference between the S3 and S3+ Garden Rooms?

While both models share similar specifications and finishes, the S3+ is deeper at 3.5m, offering more internal space (11.78m² vs. 8.20m² in the S3). This makes it ideal for clients who need a larger garden office, studio, or treatment room.

Is the S3+ insulated for year-round use?

Yes — all S3+ models are fully insulated.
Each specification comes with foil-wrapped thermal boards in the floor and walls, and 100mm roof panel insulation, ensuring comfort in every season.

Do I need planning permission for the S3+ Garden Room?

The S3+ is designed to comply with permitted development rules, provided it is installed 500mm from a boundary and the total height stays under 2.5m (excluding any base elevation). Always confirm with your local authority if unsure.

What door styles are available with the S3+ range?

Each spec has a distinct door option.

Heritage: Single entry door with fixed side light
Signature: French doors
Premium: Aluminium bi-folding doors
All doors feature 28mm toughened double glazing and multi-point locking for security.

How is the S3+ installed and what ground prep is needed?

The S3+ is delivered in prefabricated sections and installed by our in-house team in 2–3 days. It includes either steel ground piles (for soft ground) or steel feet (for hard surfaces). We only require a relatively level site and clear access to the garden.

Extended 3.8m x 3.5m footprint for increased internal space
Available in Heritage, Signature, or Premium finishes
Choice of single, French, or bi-folding doors depending on spec
Fully insulated floor, walls, and roof for year-round comfort
28mm toughened double-glazed windows and doors with trickle vents
Durable steel roof panels with 145mm total thickness and guttering
Rear non-combustible metal cladding for fire safety
Supplied with steel ground piles or feet for all surface types
Installed in just 2–3 days by our in-house team
Free UK delivery within 10 working days
10-year structural warranty included as standard

Foundation Types:
- Steel Ground Piles: Ideal for grass, gravel, or soft soil
- Steel Ground Feet: Designed for patios, paving slabs, or concrete
No Concrete Required: Quick installation with minimal disruption
Adjustable and Corrosion-Resistant: Engineered for all-year-round performance
Included as Standard: Every model comes with the correct kit for your surface type
Installed or Self-Fit: Included with both installation and self-assembly options

Timeframe: 2–3 days for most installations
Team: Performed by our in-house expert fitters (no subcontractors)
Method: Pre-engineered components ensure clean assembly
Scope: Full install includes structure, windows, doors, flooring, roofing, and guttering
Self-Assembly Option: All models available in flat-pack format with full instructions and helpline support

Delivery Area: UK mainland
Timescale: Delivery within 10 working days of order confirmation
Packaging: All components clearly labelled and securely wrapped
Offload Assistance: Our drivers assist with careful unloading
Coordinated Service: Delivery aligns with installation dates where required

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Q: Is the S3+ insulated for year-round use?

Yes — all S3+ models are fully insulated. Each specification comes with foil-wrapped thermal boards in the floor and walls , and 100mm roof panel insulation , ensuring comfort in every season.

Q: What door styles are available with the S3+ range?

Each spec has a distinct door option. Heritage : Single entry door with fixed side light Signature : French doors Premium : Aluminium bi-folding doors All doors feature 28mm toughened double glazing and multi-point locking for security.

If you have unique requirements or would like to explore custom sizes, door placements, finishes, or internal layouts, we’re here to help. Our team can tailor a garden studio to your exact needs.

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