Cabin Style 3.5m x 3m



No problem - we can make to measure




Built to the same exacting standards as our Premium products including optional Zero Maintenance exteriors, 75mm PIR foam insulation and fully plastered interiors. It can be specified with our Silver or Gold Upgraded Insulation pack which increases insulation to 50mm or 75mm respectively where reduced heating bills are required.


See Product Name for external width and depth


Deduct 250mm from width and depth quoted in Product Name to establish approximate interior floor space.


This building complies with the 2.5m height limit for Permitted Development under current Planning Regulations, more HERE


Concrete Pads on Metal Screws foundation 


Fully Insulated & Ventilated Cavity Walls comprising: Zero Maintenance Wood Fibre Composite Cladding; Ventilated Cavity; Du-Pont Tyvek (or similar) Breather Membrane; 96mm x 47mm (approx) treated C16 or C24 structural grade timber frames; 75mm (approx.) PIR foiled foam primary insulation layer; plasterboard and skim to interior walls; 3” UPVC Skirting around base of interior walls.


On this model our standard supply is Zero Maintenance Wood Fibre Cladding with a 20yr guarantee against rot (other exterior finishes offered as a cost option if preferred).


Fully Insulated Floors comprising: (minimum) Tanalised treated C24 Floor Joists; 75mm (approx) PIR Foam Insulation, Ply/OSB3 under boarded for rodent protection; Damp Control Membrane; 22mm Moisture Resistant Floor Boards


Fully insulated with 75mm Foil backed PIR foam insulation,  Plaster skim interior finish. Black UPVC facias around perimeter. The interlocking roof panels span the single pitch, with a 80:1 fall from front to back.

Black plastic gutters and downspouts connected to Water Butt with integral tap.


Optional extra cost Decking comprising: 125mm treated Floor Joists (min); Zero maintenance Wood Fibre non-slip Decking Boards; stainless steel or green coated fixings.


Half Double Glazed single door (French, Sliding or Solid Doors cost option) in Anthracite outside/white inside (colours are a cost option) UPVC (aluminium available as a cost option); Multipoint security locking system; Pilkington's 'K' Glass as standard. 


Double Glazed in Anthracite outside/white inside UPVC (aluminium available as a cost option). Pilkington's 'K' Glass as standard; Security Locks. Model shown with optional additional side window. 


All assembled with stainless steel, galvanized or green coated exterior fixings.


Minimum 2 Gang RCD protected Consumer Unit; LED down lights to suit size of room; 3 Double Switched Sockets; interior Light Switches; all fascias in white; 2 Exterior Wall Lights; 2KW Electric Convector Heater with Timer and Thermostat; external Connector Box for incoming SWA electrical cable - connection of Garden Building to incoming supply by others or priced upon application


All Structural Floor and Wall Timbers pressure preservative treated for minimum 25 year life expectancy


Your Garden Building will arrive with our trained installers ready for full assembly by us on our own concrete pad foundations (excludes interior decoration and armoured electrical mains supply cables and connection of incoming supply, priced extra if required due to variable site requirements). Please see the Base & Requirements tab for our ground condition requirements.


Click HERE for a list of areas that may incur additional delivery charges.

  • Purchase Options
  • Additional Info
  • Base Recommendations
  • Delivery

FULLY ASSEMBLED OPTION - Your Garden Building will arrive at your chosen address with our trained installers. We will provide specialist pile foundations and will fully assemble your building, including internal plaster skim and electrical wiring to our RCD electrical consumer unit. Please note, we will not provide any interior painting nor an external electrical supply from your house to your new Garden Building unless contracted to do so separately. Click HERE for a list of areas which incur extra delivery charges.


In order to ensure that your RUBICON™Garden Building is installed in the correct manner it is important that the following Requirements are understood:

1) Ground conditions must be suitable for the installation of concrete pile foundations or cast in-situ concrete pads unless a suitable existing concrete slab is already in place. We can advise on this during our FREE site survey

2) Our quoted price for your RUBICON™Garden Room assumes that the area where the Building is to be fitted is reasonably flat. Although the feet of the building are adjustable by up to 18" there are limits which can incur additional costs. We will identify if this is the case during our FREE Site Survey.

3) From a Planning Permission perspective, most of our buildings can be fitted right up against your neighbouring walls or fences. However, we normally require a minimum of 600mm (2') clearance to three sides (unless you have permission from your neighbour for us to access via their land) and usually 2m to the front elevation of the building to facilitate access for assembly, and to allow us to take the necessary Health and Safety precautions on behalf of our fitting teams.

4) Some components of our buildings are very large and heavy, such as the panel assemblies which can be up to 10' x 4' and 200mm thick weighing in excess of 60 kilos. Consequently, it is important that access to site is unencumbered and free of obstruction. Please note: Access to site via an internal route through an existing building is not usually practical or permissible - check with us first.

5) Vehicular access to the front of the property at which the Garden Room is to be installed needs to be suitable for a large delivery vehicle, with adequate space for unloading large quantities of material. Talk to us if you think this may be a problem - we can usually find a solution...!

6) The area where your Garden Room is to be assembled should not be overgrown by hedges, trees, vegitation or other material obstructions or debris such that would impede our installation team, cause them potential physical harm (hawthorn hedges etc), or undue delays in having to clear the site and surrounding area prior to starting work.

7) You will need to ensure that there are no overhead or underground services such as electricity, water, telephone, gas or drainage which will impair our ability to install your Garden Room on the proposed site. Again, we can help to confirm this during our FREE Site Survey visit.

8) We will require access to a suitable 240v 50Hz mains electricity supply and mains running water for our staff during normal working hours, typically from 8:00am to 6:00pm each working day.

We now only supply/install within approx 60miles radius of our Deeside base (CH5)

Delivery is FREE within this area

Specifically, we NO LONGER supply to the following areas due to the distances and logistics involved:

All areas outside of the UK mainland


Greater London

South & SE beyond London 

South beyond Stoke on Trent


North beyond Preston and Manchester

Hastings, Dover etc


Norfolk Broads

Wiltshire & SW




Scotland & Isles

The Borders beyond Shrewsbury

mid Wales beyond Welshpool

South Wales

Northern Ireland