What to Consider Before You Invest in a Garden Room

Property Sarah Mains 18th August 2025

If you’re desperate for more space at home, could a room in the garden be the solution? Here’s what you need to consider first.

 

With children increasingly living with their parents well into their twenties and thirties, many homeowners are yearning for more living space.

 

The obvious answer to this quandary is to build an extension.

 

But when this isn’t feasible (due to limited finances or structural constraints), creating a shed room in the garden can be the answer.

 

A garden room, also known as a shed room, is a standalone structure substantial enough to be used year-round. It may also include a kitchenette and/or a toilet.

 

But even if this option is cheaper than extending, it’s still a substantial investment that requires careful consideration.

 

Here are some issues to think about if you need more living space.

 

Planning requirements

 

Always check the planning laws in your area - you may need planning permission. (Never take the word of a builder or shed provider on this; they’re not the experts.)

 

Factors that could influence planning include the size and use of the structure, its location in relation to your home and neighbouring properties and if you’re in a conservation area.

 

If you plan to replace an existing shed or outbuilding, you may need to apply for a change of use.

 

Draw up a budget

 

The costs of creating a garden room can vary enormously and are often underestimated. 

 

You’ll need to ensure it is damp-proof and insulated (otherwise your offspring will be back in with you when winter hits). 

 

Ventilation is also critical, as sheds can get quite stuffy in summer.

 

Other issues to consider include providing access to electricity and water, and the installation of fire safety measures.

 

Security

 

Burglars often target sheds and garden rooms. Ensure you have good locks on all windows and doors, and motion sensor lighting outside. You could also consider CCTV.

 

Other considerations

 

If the structure is being used as a living space, it may be subject to council tax.

 

Will it add value?

 

As with most property additions, if it’s done well and complies with planning and building regulations, then yes.

 

(If you don’t have the appropriate approvals, you may face all sorts of hurdles when you come to sell, so don’t take the risk.)

 

A good quality structure can add anywhere between five and 15% to a property’s value*, depending on its size and scope and the level of presentation.

 

If you’re selling a property with a shed/garden room, your agent can advise on the best way to market this feature. 

 

A garden room can be an appealing extra for buyers who work from home or have teenagers or grown-up children.

 

If you need more living space and are considering whether it makes more financial sense to move or make changes at home, come and speak to us.

 

Know someone who might find this article helpful? Please share it with them.

 

*Source: Country Living.

   
 

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