Garden Room vs Garden Home vs Annexe: What’s the Difference?

If you’re considering adding extra space to your property, you’ve likely come across terms like garden room, garden home, and granny annexe. While they’re often used interchangeably, they serve very different purposes.

This guide will help you understand the key differences, costs, planning requirements, and which option is right for your home and family.

If you’re looking for a simple definition, read our What is an Annexe guide.

 

Garden Room vs Garden Home vs Annexe: Key Differences

Feature Garden Room Garden Home Annexe
Designed for full-time living No Yes Yes
Kitchen & Bathroom No Yes Yes
Planning requirements Low Medium Medium–High
Typical use Office / leisure Independent living Family accommodation

 

What is a Garden Room?

A garden room is an outdoor structure designed to provide additional space for your home, typically used as an office, gym, or relaxation area.

While it can be insulated and comfortable, it is not designed for full-time living and does not usually include facilities like kitchens or bathrooms.

Garden rooms are ideal if you need extra functional space without major planning complexity.

 

What is a Garden Home?

A garden home is a fully self-contained living space built within your garden. It includes everything needed for day-to-day living, such as a kitchen, bathroom, and bedroom.

Unlike a garden room, it is designed for full-time residential use — making it a modern, flexible solution for families needing additional accommodation.

At iHus, our garden homes are built to the highest standards, combining comfort, independence, and long-term durability.

 

What is an Annexe?

An annexe is a type of self-contained living space connected to or located within the grounds of a main property.

It is often used to accommodate family members, particularly elderly relatives, while maintaining independence.

For a full breakdown, visit our What is an Annexe guide.

 

Which Option is Right for You?

Choosing between a garden room, garden home, or annexe depends on your needs:

  • Choose a garden room if you need extra space for work or leisure
  • Choose a garden home if you want a fully independent living space
  • Choose an annexe if your focus is family accommodation and long-term living

For most families looking for flexibility and independence, a garden home offers the best balance.

 

Planning Permission Considerations

Planning requirements vary depending on the type of structure and your location.

Garden rooms may fall under permitted development, while garden homes and annexes are more likely to require planning approval.

At iHus, we guide you through this process and provide support with our planning guarantee.

 

How Much Does Each Option Cost?

Costs vary depending on size, design, and specification:

  • Garden rooms – lower cost, simpler builds
  • Garden homes – mid to high range depending on features
  • Annexes – similar to garden homes but may include additional requirements

For a detailed breakdown, read our cost guide.

 

Frequently Asked Questions

What is the main difference between a garden room and an annexe?

A garden room is for occasional use, while an annexe is a fully self-contained living space.

Can you live in a garden home full-time?

Yes, garden homes are designed for full-time residential use.

Do garden homes need planning permission?

In most cases, yes — particularly if they are used as independent living spaces.

Is a garden home the same as an annexe?

They are very similar, but “garden home” is a more modern term often used for high-quality, standalone builds.

 

Start Your Project

If you’re considering creating a garden home or annexe, our team can help you design a solution tailored to your needs.

Explore our range of designs or download a brochure to get started.