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Side extension ideas: Widening your horizons

Widen your horizons with our side extension ideas. We want to help you transform small, narrow, or otherwise unused space around your property, giving it a new purpose and utility. Not only will it add some extra square footage onto your property, but you’ll also increase the market value of your home.

Research undertaken in May 2020 showed that a single-storey extension can increase the value of your property by up to 7%, while a double-storey extension can offer an 11% increase.

Not sure where to start? Read on for our top tips, trends and design ideas to help get you started.


Layout papers for side extension ideasSide extension ideas layout

If you’re considering a side extension, then you’ll already have an area around your house in mind. Side extensions are versatile and easily fit in small and narrow spaces, which is why they’re a good choice if you’re looking for some extra square footage.

They’re popular add-ons for homeowners who want to extend their kitchen or add a utility, porch or garage. However, a side extension can also extend an existing space, opening it up for more breathing room.

Another consideration is the roof. Whether you choose flat, pitched, gable or hipped, be sure to blend it seamlessly into the side of your house.

Side extension ideas - porch on detached houseSide house extension ideas

These homeowners have opted for a pitched roof porch extension, which matches the asymmetrical house perfectly. With more space inside to welcome guests, a porch is an excellent way to increase your square footage without huge renovation costs.

Alternatively, your porch can double up a reading room, extra storage or a utility feature. This frees up room in the rest of your house for other design elements. Or, it just helps it remain clutter-free!

Read our side return extension cost guide for a full breakdown of how to price up your project.

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Bungalow side extensionBungalow side extension ideas

Extending a bungalow is one of the easier extension projects. As bungalows only have one floor, it’s a matter of finding the right area to include an addition. Some homeowners opt for L-shapes, while others consider T or U extensions.

Options include garages, garden rooms, home offices and orangeries. These homeowners have opted for a foyer and living room L-extension, which creates a large driveway for extra parking space. We love the red-slate roof and red-bricked walls, which gives this home an air of stateliness.

Why not read about how to choose a builder for an extension for some expert advice around your project?

2-story side extension ideas2 storey side extension ideas

Two storey extensions are on the pricier side. However, they’re perfect for homeowners looking for a more cost-effective addition as they offer greater square footage for your money.

Depending on what design you’re opting for, a 2-storey side extension might require planning permission. Read our blog: double storey extensions could be allowed without planning permission for more information.

We love this wood-clad contemporary design, which is designed to complement the main house. It’s used as an office space that’s separate from the rest of the house, while the bottom half extends the kitchen and gives the homeowners more roaming room.

Side return extension ideasSide return extension ideas

These homeowners have made the most of their dead space by adding a glass gable kitchen and dining room extension to the back of their house.

Fitting seamlessly with the main house, it’s a striking example of how a small but impactful design can transform your home and give it character and interest without overpowering the rest of the building.

Why not hire one of our professionals to help you get the look?

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Single storey extension ideas on large house in countrysideSingle storey side extension ideas

This large gable extension is a gorgeous example of how to seamlessly add extra character and square footage to your home. These designs are perfect for period properties looking for the extra room without over-modernising the space.

The glazing is tucked beneath the roof overhang, which allows for a whimsical set of French doors and windows that flood the receiving room with warmth and light. The black shingle roof itself acts as a frame to pull the main house and the extension together.

Why not hire one of our professionals to help you get the look?

Terraced house side extension designTerraced house side return extension ideas

Even small areas can benefit from a side extension, as shown in this example. Designed to fit with the main house, this bespoke side return utility offers more space without compromising on light.

We love the wood fence and floor panels that complement the grey stone masonry of the terraced house. A white pebble path with garden lights also help give this home some extra light and character.

Finally, the flat roof is a good way to ensure no light is lost in the upper storeys of the house.

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1930's side extension example1930s semi side extension ideas

Why not take a step back in time and inject some 1930s glamour into your home?

This sunroom is brimming with classic design features, such as the chesterfield couches, the victorian floor tiles, and the hip roof with wooden frames and glass panels that carousel around the entire structure. Perfect for both small or large homes, consider a Victorian conservatory, a 1930s orangery, or a glasshouse brimming with exotic plants.

Not only is this a perfect place to read, relax and entertain, but it’s also tucked away at the back of the property to ensure maximum privacy and light retention.

Semi-detached side extension barn conversion ideasSemi-detached house side extension ideas

This tall hipped-roof house has opted for a smaller gable-roof addition to complement its aesthetic.

Although the extension is clearly an add-on to the original house, it’s utilised as a receiving room and kitchen/utility. We love the distressed grey and white cladding and black-framed doors and windows for a Tudor-esque vibe.

Like what you see? There’s more where this came from. Check out Checkatrade’s blog for more tips, ideas, how-tos, and inspiration.

If you’re trying to price up which extension is best for you, then take a look at our house extension cost guide.

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