Optional upgrades

No limits to your studio

Our range of optional upgrades are just some of the amazing things you can add to your building however, if you have your own ideas or want something different, just let us know. There are no limits to what we can do with our skills, adaptability and experience within the industry. Each individual upgrade is available on all of the models.

Price these on your own room →Get a quote

Before you add anything

This is already in the price of every building we make. Worth reading first, so the list below reads as choices rather than as things you have to buy.

UPVC doors and windows
Weed-control barrier
Breathable waterproof membrane
Professional installation
Insurance-approved 5-lever lock
Toughened double glazing
5-year structural guarantee
1-year warranty on fixtures & fittings
Anti-rot guarantee

Doors

Every building comes with 1.5m French doors on the front. These are what it costs to open it up further, or to put a second doorset on another wall.

Grey or black frames throughout, at no difference in price. Widths are fixed sizes rather than made to measure, which is what keeps them at these prices.

French doors · 1.5m: Included£1,100 on another wall
French doors · 2.7m: + £600£1,800 on another wall
Sliding doors · 2.4m: + £700£1,600 on another wall
Sliding doors · 3.0m: + £1,200£2,400 on another wall
Sliding doors · 3.6m: + £1,400£2,400 on another wall
Bi-fold doors · 2.4m: + £1,400£2,200 on another wall
Bi-fold doors · 3.0m: + £1,800£2,800 on another wall
Bi-fold doors · 4.0m: + £2,800£3,800 on another wall
Single door · 0.9m: Included£700 on another wall
Storage door · 0.9m: Included£700 on another wall

Windows

Two windows are included as standard and the two cheapest come off your quote automatically, so a room with two windows pays for none of them.

Top hung opens, fixed doesn't, and the 50/50 splits across its middle so the top half opens over a fixed transom. All double glazed and toughened.

Top hung highline · 600 × 400mm: + £300
Fixed highline · 600 × 400mm: + £300
Top hung highline · 1000 × 400mm: + £350
Fixed highline · 1000 × 400mm: + £350
Fixed · 600 × 2000mm: + £350
Top hung · 600 × 2000mm: + £350
Fixed · 1000 × 2000mm: + £400
Top hung · 1000 × 2000mm: + £400
50/50 half opening · 1000 × 2000mm: + £500
Top hung · 1000 × 900mm: + £300
Side hung · 600 × 900mm: + £350

Glazing

Chosen per glazed unit rather than for the whole building, so the bathroom window can be obscure while the rest of the room stays clear.

Obscure glass: Textured privacy glass - light through, no view; + £50per pane
Integral blinds: Black slats sealed inside the unit: nothing to dust, nothing to replace; + £400per pane
Wrap-around corner glazing: Glass turning the corner with no post in it, on a model not already built that way; + £1,200

Cladding

The outside face of the building, priced by the metre of wall it covers. Every finish is offered on all four elevations or on one at a time.

Cedar and redwood silver down over the first couple of years unless they are oiled; composite holds its colour and never needs treating.

Redwood: Natural timber, standard finish; Included
Composite: Composite board; + £200per m
Western Red Cedar: Premium timber; + £240per m
Aluminium: Contemporary metal cladding; Included

Inside

How the room is finished once it is watertight. Everything here is priced off the size of the room, so these are the figures for the smallest we make.

Insulation - office spec: Walls, floor and roof, for year-round use; from £500
Insulation - accommodation spec: The heavier build-up, for sleeping in; from £1,150
Plasterboarded & plastered: 3mm skim, ready to decorate; from £1,550
Painting & decorating: Matt white, professionally applied; from £500
Laminate flooring: 12mm, in a range of oak and grey finishes; from £650
Skirting: Fitted and finished to match the decoration; from £300
Acoustic slat panelling: Oak, black, grey or brown battens on black felt; + £80per 600mm panel
Rubber gym matting: + £40per m²
Internal partition wall: Turns one room into two; + £90per 0.5m
Internal door: Frame, door, hinges, chrome handles, latch and architraves; + £400each

Electrics & heating

The electrical pack is the one nearly everybody takes: it is what turns a garden building into a room you can work in.

A socket goes on an outside wall as readily as an inside one - the weatherproof external version is the same price as the one by your desk.

Electrical pack: Consumer unit, five double sockets, switching, LED downlights and the connection back to the house; + £1,300
Additional double socket: Five come with the pack; these are the ones past that; + £20each
Additional single socket: + £20each
USB socket upgrade: + £20each
Hard-wired internet + Wi-Fi: A proper link to the house, not a repeater; + £300
LED strip lighting: Concealed in the roof edge and the wings; + £55per m
Exterior wall light: + £30each
2kW smart wall heater: + £250each
Air conditioning: Hot and cold, so it earns its keep in both seasons; + £2,000each
Underfloor heating: + £80per m²

Kitchen & shower rooms

Anything with water in it needs the plumbing pack first. Past that, it is a question of how much of a home the building is meant to be.

Kitchen prices exclude hot water and the plumbing in and out. Drainage and water are priced by the metre because the distance is the whole cost - the survey measures it, and nothing is guessed off a map.

Plumbing pack: Required for any toilet, sink or shower; + £900
Toilet: + £350
Sink: + £350
Toilet & sink combination: + £550
Full shower room: Tiled, plumbed and fitted; + £3,500
Kitchenette: A 2m run of units, worktop and sink, built into the room rather than added to it; from £3,000
Fitted kitchen: The full room, designed around how you actually use it; from £6,000
Drainage run to the nearest manhole: + £200per m
Water supply run: + £50per m

Outside

The half of the project that happens around the building: what you step out onto, what keeps the rain off you, and what it all stands on.

Decking: Composite boards on their own sub-frame; + £140per m²
Recessed deck spotlight: + £85each
Canopy: Roof carried out past the wall, over the deck; + £220per m² covered
Canopy wall: A side closed in, for shelter and privacy; + £260per m² of elevation
Canopy wall light: + £20each
Corner return: Fins carried further past the front elevation; + £260per m² of extra elevation
EPDM rubber roof membrane: One piece, no seams, and the reason a flat roof lasts; from £700
Guttering & downpipe: from £250
Galvanised pile foundation: For ground that will not take a pad; from £600

All prices include VAT and fitting. They are list prices for the upgrade itself: the 3D builder prices them against your actual room and gives you a running total, and the final figure is confirmed after a free site visit. Anything marked “quoted per project” depends on the garden, which is why we would rather see it than guess.