Garden Rooms

- The Ridgeway - HQC Range
- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- Bespoke, powder-coated, aluminium fascia 
- Origin Global windows
- Laminated Composite cladding 
- Origin Global aluminium sliding or bi-folding doors 
- Wall-mounted heater
- Canopy downlights

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- The Haynards - HQC Range
- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- Bespoke, powder-coated, aluminium fascia 
- Double glazed windows (triple glazed or laminated if required, at an additional cost)
- Laminated Composite cladding 
- Origin Global aluminium sliding or bi-folding doors 
- Wall-mounted heater
- Canopy downlights

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- The Theobalds - HQC Range
- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- Bespoke, powder-coated, aluminium fascia 
- Double glazed windows (triple glazed or laminated if required, at an additional cost)
- Laminated Composite cladding 
- Origin Global aluminium sliding or bi-folding doors 
- Wall-mounted heater
- Canopy downlights

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- Double glazed windows (triple glazed or laminated if required, at an additional cost)
- Choice of French or bi-folding doors
- Floor-to-ceiling side window 
- Canopy with a modern LED strip light
- Plaster board finish, down-lights and an electric radiator provided as standard
- Fully insulated
- Laminate flooring with underlay

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- The Athenia - CDR Range
- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- uPVC Tapered Side Window (Black/White/Anthracite)
- Double glazed windows (triple glazed or laminated if required, at an additional cost)
- Choice of French or Sliding doors
- Flat internal ceiling 
- Plaster board finish, down-lights and an electric radiator provided as standard
- Fully insulated
- Laminate flooring with underlay

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- The Caldecot - CDR Range
- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- Floor-to-ceiling side window
- Double glazed windows (triple glazed or laminated if required, at an additional cost)
- Choice of French or sliding doors
- Flat internal ceiling 
- Plaster board finish, down-lights and an electric radiator provided as standard
- Fully insulated
- Laminate flooring with underlay

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- The Claremont - CDR Range
- Timber frame construction built to UK Building Regulations
- Sizes: 15, 16, 18, 20, 21, 24, 25, 28 or 30sqm
- Double glazed windows (triple glazed or laminated if required, at an additional cost)
- Choice of French or sliding doors
- Floor-to-ceiling 500mm side window
- Flat internal ceiling 
- Plaster board finish, down-lights and an electric radiator provided as standard
- Fully insulated
- Laminate flooring with underlay

For bespoke sizing and/or enquires please contact bespoke@outdoormodularspaces.com 

Areas we deliver/install: London, Herts, Essex, Cambs, Berkshire, Buckinghamshire, Kent, Surrey, Sussex, Hampshire, Bedfordshire, Middlesex ONLY.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- Premium Garden Rooms, Basebox Plus: 20m² – 28m²

- Maximum Space: 13 available sizes for large-scale garden living

- Long-Term Security: 30-year design life and a 12-year structural guarantee

- Zero Maintenance: UV-stable uPVC woodgrain cladding (no painting needed) and high-security uPVC doors

- Premium Extras: Includes graphite composite decking and a designer aluminium side screen

- All-Season Performance: Eco-insulated walls, roof, and floor with premium double glazing

- Fast Setup: Professional 1–2 day installation; typically planning-exempt

- Modern Interior: Maintenance-free white soft-sheen wall finish

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However, your legal rights are unaffected. For further details, please see Delivery & Returns

- Premium Garden Rooms: 20m² – 28m² 

- Built for Longevity: 30-year design life supported by a 12-year structural guarantee 

- Total Insulation: Year-round comfort via eco-friendly floor, wall, and roof insulation with premium double glazing. 

- Hassle-Free Install: Professional completion in 1–2 days; typically requires no planning permission 

- High-Spec Features: Secure uPVC French or sliding doors and a maintenance-free, soft-sheen white interior 

- Exterior Finish: Eco-friendly exterior cladding (requires painting within 6 months)   

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However, your legal rights are unaffected. For further details, please see Delivery & Returns

- Premium Garden Rooms, Basebox Plus: 13m² – 19m²

- Built for Longevity: 30-year design life with a 12-year structural guarantee

- Maintenance-Free Exterior: UV-stable uPVC woodgrain cladding (no painting required) and high-security uPVC doors

- Premium Inclusions: Comes standard with graphite composite decking and an aluminium ladder-style side screen

- Year-Round Comfort: Fully insulated (floor, walls, and roof) with eco-friendly materials and premium double glazing

- Efficient Install: 1–2 day professional installation; typically requires no planning permission

- Refined Interior: Easy-clean, white soft-sheen wall finish

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However, your legal rights are unaffected. For further details, please see Delivery & Returns

- Premium Garden Rooms: 13m² – 19m²

- Long-Term Durability: 30-year design life with an extended 12-year structural guarantee

- All-Season Efficiency: Fully insulated (floor, walls, and roof) with eco-friendly materials and premium double glazing.

- Rapid Setup: Professional installation in just 1–2 days; usually planning-exempt

- Modern Finish: High-security uPVC doors (French or sliding), easy-clean white interiors, and eco-friendly exterior cladding

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- SIP (Structural Insulated Panel) construction with insulated walls, roof and floor
- 15mm external timber interlocking cladding 
- 28mm interior paintable MDF panels with cavity for electrical wiring (not included)
- 1.2mm EPDM rubber roof
- Double glazed safety glass windows & door
- Level base required

- Premium Garden Rooms, Basebox Plus: 6m² – 11m²

- Superior Durability: 30-year design life with a 12-year structural guarantee

- Full All-Weather Insulation: Eco-friendly floor, wall, and roof insulation with premium double glazing for year-round use

- Premium Exterior Finish: Maintenance-free, UV-stable uPVC woodgrain cladding (no painting required)

- Included Upgrades: Features graphite composite decking and a matching aluminium ladder-style side screen

- Fast, Easy Setup: 1–2 day professional installation; typically planning-exempt

- Sleek Interior: Easy-clean white soft-sheen walls and high-security uPVC doors (French or sliding)

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However, your legal rights are unaffected. For further details, please see Delivery & Returns

- Premium Garden Rooms: 6m² – 11m²
- Built to Last: Designed for a 30-year lifespan with a 10-year structural guarantee
- Year-Round Comfort: Fully insulated (walls, roof, floor) with eco-friendly materials and premium double glazing
- Fast, Easy Install: Professional 1–2 day installation; typically requires no planning permission
- Low Maintenance: Durable composite cladding, high-security uPVC doors (French or sliding), and an easy-clean white interior
- Customizable: Choice of 9 sizes in this range (larger sizes available).

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

-    Full garden room building kit

-    Simple & easy-to-follow installation (requiring 2-3 people)

-    All non-standard tools, equipment and parts included

-    Premium uPVC French doors and opening window included

-    10-year guarantee

-    Planning permission rarely required *Subject to your local authority.

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

-    Full garden room building kit

-    Simple & easy-to-follow installation (requiring 2-3 people)

-    All non-standard tools, equipment and parts included

-    Premium uPVC French doors and opening window included

-    10-year guarantee

-    Planning permission rarely required *Subject to your local authority.

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

-    Full garden room building kit

-    Simple & easy-to-follow installation (requiring 2-3 people)

-    All non-standard tools, equipment and parts included

-    Premium uPVC French doors and opening window included

-    10-year guarantee

-    Planning permission rarely required *Subject to your local authority.

The price includes free delivery in Band 1. Extra charges apply outside of this area. Please refer to the map under Delivery & Returns for more information.

To enquire about this item, please email costco@greenretreats.co.uk or call 01296 328260.

Costco’s customer satisfaction guarantee and returns policy does not apply to special order merchandise, custom merchandise and installed merchandise. However your legal rights are unaffected. For further details, please see Delivery & Returns

- Spacious 17m² garden room greenhouse with 2.8m high ceiling

- 10mm multi-wall roof panels protect from strong sunlight exposure and extend your season by protecting plants from autumn frosts

- Crystal clear acrylic glass-look wall panels provide over 90% light transmission

- Withstands winds up to 120 km/h and 80 kg/m² of snow

- Includes two large, automated roof vents that work without the need for power

- Built in the UK using FSC certified UK timber

- Easy to assemble, modular design

- Durable and watertight construction

- Pressure treated and backed by an unbeatable 25-year anti-rot guarantee

- Bi-fold shutters and wooden bar top

- Optional wooden base available to purchase separately

- Decorative accessories not included

- Stools not included