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10 Inspiring Single Storey Extension Ideas

16 September 2024
single storey extension ideas

A single-storey extension can add valuable space to your home at a more affordable price than a two-storey extension. Whether you'd like to open up your kitchen, create an additional bedroom, make a home gym, or something else, a single-storey extension can be a fantastic way to create the space you need with minimal disruption. This post will explore some options for a single-storey extension to help you get inspired.

1) Open-plan Kitchen

Expanding your kitchen with an extension is an excellent way to make more room for cooking, dining, and hosting. You can opt for a single-storey extension linked to your current kitchen, or add the extension to a different room and migrate your kitchen, converting the old space into a living room, dining room, or bathroom.

Case Study: Kitchen Extension in Middleton, Derbyshire

This rural property in Derbyshire has been enlarged significantly through a single-storey kitchen extension. The agricultural style of the extension blends beautifully with the traditional style of the home, providing an updated, contemporary feel while maintaining the charm of the original building.


To create an airy, open feel indoors, we incorporated skylights and french doors into the design, as well as placing a window directly over the sink. Indoors, the flooring has been replaced to blend the original room into the extension seamlessly.

House Extensions & Interior Design
House Extensions & Interior Design

2) Wrap-around single storey extension

A wraparound extension adds extra room to two sides of your home (for example, the left and rear sides of the property). If you'd like your home to feel more open plan, this can be an excellent option, providing comprehensive space to much of the lower floor of your home. Strategically-placed windows and skylights in a wraparound extension can also help your house feel brighter.

brown wooden table with chairs
single storey extension

3) Home gym

Another excellent option for a single-storey extension is to create a home gym. Ground-floor, single-story extensions designed for a home gym can provide a stable and sturdy surface for at-home workouts. You can customise the space to fit your workout routine, including windows for natural light and a view during cardio, as well as space for workout equipment such as a bench or weight rack.

single storey extension home gym

4) Orangery extension

A single-storey extension has the potential to have windows on both the walls and the ceiling, making it ideal for creating a bright orangery. When placed strategically, it can provide a warm and sunshiny spot in the winter and a cool, shady place in the winter. An orangery is ideal for a lounge area, home office, or crafting space.

round clear glass-top table and five gray chairs dining se

5) Bring the Outdoors In

If you plan to install French doors in your extension, you might want to think about adding a patio at the same level. This will allow your indoor space to extend into the outdoors during the warmer months. It will give you extra space in the summer and make your extension feel more open.

level flooring

6) Utility Room

An often overlooked space-saving option is a utility room. A small single-storey extension is ideal for this purpose. Utility rooms can free up valuable kitchen space taken up by washing machines and dryers. They provide additional storage space and give you more room for airing laundry, reducing clutter around the rest of the home.

a laundry room with a sink and a washer and dryer

7) Contrasting extension

If you'd like to add more character to your home, a contrasting extension can be a great way to set your property apart. Extensions in contrasting shapes or materials can provide a striking look from the outside and add more interest to the interior of your home.

House Extensions & Interior Design

8) Fill in the gaps

Houses with an L or U-shaped rear can benefit from an extension that evens out the asymmetrical wall. This is a great way to utilize the existing structure and add an extra room to your home while keeping costs and lost garden space to a minimum.

gray steel 3-door refrigerator near modular kitchen

9) Side Return Extension

Sometimes, a home only needs a little extra space to feel exceptionally larger. The side of the house tends to be under-utilised, so this can be a great way to create additional room without using up valuable garden space. You could extend an existing room like a kitchen or living room to make the house feel more open-plan or create an additional room like an office or utility room. Smaller builds also tend to be more cost-effective and take less time, saving you money and hassle.

side return extension

10) Porch Extension

Another often-overlooked extension idea that can free up additional space in your home is a porch extension. It can create a transitional space between the main house and the outdoors, making your home feel less cluttered and more welcoming when entering. A porch can also be a great way to prevent clutter, such as coats and boots, from accumulating in the hallway and stairwell.

porch extension

Still looking for inspiration? If you’d like to gather more ideas for your single-storey extension, we can help! Our planning team can discuss your goals with you and design a space that aligns with your needs. Simply visit our contact page and enter your details, and we will be in touch shortly to arrange a free initial consultation. 

Get help with your single storey extension