Side Return Extensions

Plus Rooms is London’s leading design and build company. We have years of experience in creating many types of extensions, specialising in kitchen extensions and loft conversions. We are renowned for our design skills and craftsmanship, delivering projects with a level of finish that is unrivalled in our industry.

Want to revitalise your home with a stylish and convenient open-plan living space? A side return kitchen extension could be exactly what you’re looking for. Find out what the Plus Rooms team has to offer.

What is a Side Return Extension?

A side return extension is located around the rear and side of a property, often between two neighbouring houses. Many period properties include an alleyway, and this narrow strip often goes under-utilised or is used to store refuse materials. A side return extension makes the most of this space by expanding the ground floor of a home. This means they do not have to be too large to offer additional space and functionality, so they are a popular choice for homeowners with a smaller garden.

Side return extension ideas

Design & Build Services

We pride ourselves on a client-centric approach. This means that the entire building project will be structured around your needs and requirements. You can choose from a range of design options or opt for a bespoke design to create something truly original.

So what are you looking for? We offer kitchen extensions that can meet any need, whether that involves updating period properties with a contemporary extension, or creating warm and inviting open-plan kitchen and dining spaces for nights in with the family. If your aim is to have an additional space that makes the most of natural light, we can incorporate bi-fold doors, a glass roof or floor to ceiling windows for panoramic views of your garden space.


How Much Does a Side Return Extension Cost?

Building costs for side return extension costs can depend on numerous factors, from size and roof design to property type (costs can sometimes vary for terraced and semi-detached houses). For example, a medium-sized side return extension with a flat roof has an estimated average cost of £68,000.

All of our estimated costs include construction costs, plumbing and electricity, glazing and internal doors and applicable VAT. We will remain as transparent as possible regarding additional costs.

We have developed an easy-to-use extension cost calculator. This makes it as easy as possible for customers to see what extensions are available for them, as well as what cost factors are included in their final quote.

Planning Permission and Permitted Development Rights

As part of our all-inclusive project management service, our team can offer guidance on planning applications and building regulations approval.

To find out more about planning permission, permitted development and party wall agreements, visit our dedicated planning services page.

Looking for side return extension ideas? Over the years we’ve built up a substantial portfolio of extension projects. Take a look below at some recent examples of side return extensions,  or contact the Plus Rooms team if you have any questions.

See more house extension ideas here.

Find out more about our other home extension types: side extensions, side and rear extensionswraparound extensionsflat roof extensions, and rear extensions

Browse our selection of side return extensions

Upland Rd 2

East Dulwich

Shenley Rd


Shawbury Rd

East Dulwich

Revelstoke Rd


Midmoor Rd


Lime Grove


Kylemore Rd

West Hampstead

Dassett Rd

West Norwood

Croxted Rd

Tulse Hill

Bromar Rd


Braemar Ave


Beauval Rd

East Dulwich

Interested in Kitchen Extensions?

View our wide portfolio of Kitchen projects