Side return house extension London

Side return are one of the most common residential build projects. Terraced houses over the years have hugely benefited from side return house extensions, they offer great way to offer foot print of the rear outrigger. There is more space for kitchen and dinner, living space or even utility. With various design and construction methods available at Nuhous we can help you achieve your goal of building a new Side return you will enjoy.


Side return house extensions cost from £50,000.00

Side return house extension London

What is a side return house extension?


Side return house extension will infill the side ally on your terraced house or semi detached it does offer great space and will make kitchen and dining areas much bigger, some side returns are able to add bathrooms and utility rooms. 

Why would you build side return house extension?


Side return house extensions are easy to obtain on planning and if the rear house extension falls under permitted development rights you could just go ahead and build given you have completed all the design phases requirements that Nuhous sets out:

  • Excellent area of space - at rear side ally of the property land you will be adding an lean to meaning the outrigger wall will be made to be open plan giving you extra space.

  • Wasted space gets put to good use - many gardens, side alleys have unused space why not add the extension and extend the patio further out so that you don't have unused space in your back yard 

  • Side return house extensions are usually hidden - little or no visual effect would work well on planning decisions 

Side return extension London
Side return extension London

Will i need planning permission for my side return house extension?


A side return extension is considered to be permitted development (PD) — in other words, it doesn’t need planning permission as long as it satisfies certain criteria. First and foremost, it must be attached to a house (flats and maisonettes don’t qualify). Plus, PD rights may be restricted if your home is in a conservation area. Speak to your architect about this or consult your local council directly.

A side return extension must be single storey (no more than four metres high) and must not exceed more than half the area of land around the original house (as it was first built or as it stood on 1 July 1948 if it was built before that date). It must also be no wider than half the width of the original house. If the extension is within two metres of a boundary, maximum eaves height should be no higher than three metres to be permitted development.

As well as satisfying these conditions, you’ll need to notify the local authority of your proposal and formally consult neighbours. If there are objections, the proposal might not be allowed, so it’s wise to seek advice before getting started.

Side return house extension

Will i need a party wall agreement for my side return house extension?

A Party Wall Agreement is required when any building or structural work affects an adjoining property, including when extensions are built right up to or on a garden boundary wall or work is carried out on an existing party wall.

When building a side return extension that requires a Party Wall Agreement, you should contact your neighbours at least two months in advance, though in some cases a month’s notice should be enough.

How much does side return house extension cost in London and Hertfordshire areas?


The simple answer to question how much does side return house extension cost in London and Hertfordshire areas is between £50,000.00 to £75,000.00 on average.

Side return house extension cost would hugely be dependent on what the side return house extension is going to be the size of the side return extension, ground conditions, structural specifications, party wall conditions, sewers, materials used, location, the finishing, labour and materials required, preparation work, existing building or land and obstacles and much more.

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Over 16 years of Architecture and Construction experience

At Nuhous we are loft conversion experts a specialist loft company. We are also house extension builders a specialist in the field. With our in-house architectural design and construction team we deliver high quality loft conversions and house extensions across London and Hertfordshire areas. you can be rest assured we will start from design and planning stages to construction and finishing stages.

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We will provide you with the free quote for your loft conversion or house extension project, we also have have a price match, if you have found a cheaper quote come back to us and we will match it! Terms and conditions apply. 

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