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Garden room cost

Garden rooms are a great way to add an extra element of functionality to your outdoor area, offering a space that you can use all year round, no matter the weather.

There is a whole host of uses for a garden room, from an at-home gym and hobby room, to a garden bar or just simply a place to relax. The possibilities are endless, and a garden room can really help to maximise space and in a way that’s fun and unique.

How much do garden rooms cost?

Most garden room suppliers will offer a rough pricing guide for common sizes of building, but there are many things to consider, and your particular garden may require a bespoke garden room due to its size or access.

Here are some of the different factors that will determine the overall cost of a garden room:

  • The size of the garden room you want to create
  • Whether you choose a modular or bespoke design
  • The materials you use to build your garden room
  • The design features you choose, such as doors and windows
  • The interior of your garden room, for example, plastering and cladding
  • Whether you need electrics or plumbing
  • Whether you want a pathway created from your home to your garden room

How big can a garden room be?

When building a garden room, you must meet certain rules and regulations. You mustn’t cover more than 50% of your garden with buildings. And, to be covered within your Permitted Development rights, your outbuilding must:

  • Be single storey
  • Have a maximum eaves height of 2.5 metres
  • Have a maximum overall height of three metres (or four metres on a dual pitched roof to the highest point)
  • Have no verandas, balconies or raised platforms

Find a local garden room builder

Off the shelf vs. bespoke garden rooms

Type of garden room Average cost
Modular garden roomper m2£750 - £1500
Bespoke garden roomper m2from £745

When choosing the type of garden room you want, you have the option of an off the shelf modular solution, or something bespoke that is created specifically for your outdoor area.

Garden rooms are naturally quicker to build than an extension for example, as they’re detached from your home. The type of garden room that will suit you best will depend on what you want to use it for.

Garden room options

If you’re choosing to create a small garden room for a space to work or to enjoy your hobbies, you may find a modular garden room is perfectly suited. However, if you’re creating something unique, such as a garden man cave or children’s garden room, you might want to look into bespoke options that allow you to really tailor the building to your needs. Here are some average cost guides for popular garden rooms.

Cost for a garden man cave

Type of garden man caveUnitRange low - highAverage cost
Low shed with insulation powerper project£1,000 - £1,500£1,250
Medium log cabinper project£5,000 - £6,000£5,500
Large higher-spec log cabin / Custom brick-built cabinper project£15,000 - £30,000£22,500

 Garden man cave bar

Read our article here on how to make a garden man cave.

Cost for a children’s garden den

 Type of garden roomUnitAverage cost/Range low to high
Children's garden roomPlayhouseper project£430 - £1,300
Wicker teepeeper project£200
Treehouseper project£2,500
Labour to assemble -two peopleper day£360
Raised platform projectStable decking baseper project£150 - £200
Elevated softwood deck with railing/stairs per project£2,200
Children's shed - flat-packedper item£140 - £300
Shed assemblyper day£180

Children's garden den

Children's treehouse den

Read our article here on how to make a children’s den.

Cost for a small garden room

Type of small garden roomUnitAverage cost
Larch cladding insulated office - not assembledper item£720
Basic small insulated office - assembled per project£3,200
Home office pod - not assembledper item£3,600

Small garden room

Read our article here on how to maximise your small garden.

Cost for an office garden room

Type of garden office/featureUnitAverage cost/Range low to high
Mini garden office delivered for self-assemblyper item£2,650
Assembly labour - two people2 -3 days£690
Deck baseper item£520
Green sedum roof - fittedper project£605
Roof and floor insulationper project£630
Electrical packagesper day£180 - £250
Factory painted doors/windowsper item£261
Factory pre-treatment and paint finish to wallsper item£288
On-site clear pre-treatment ready for paint/stain finishper project£154

Small garden room office

Now that you have a rough idea of what costs to expect, use our Checkatrade Search to find a trusted professional in your local area who can provide you with a specific quote for the type of garden room you want to create.

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