A Complete Guide to Single-Storey Extensions

The Reasons for a Single-Storey Extension

There are many reasons why a homeowner may choose to build a single-storey extension. First of all, they offer great versatility particularly if you are hoping to transform the layout of your home without radically changing too much of the existing structure.

Single-storey extensions are the most popular type of extension and we have worked on many projects in the past to create this type of floor plan. Below are some of the benefits of a single-storey extension:

Adds value to your property

One of the biggest benefits of adding an extension to any home is that you increase the overall value of the property. This can bring about a really good return on investment.

Provides more living space

A single-storey extension provides more space and can extend existing spaces such as a kitchen or dining room. Many homeowners who build these extensions create indoor/outdoor living spaces which can be used year-round.

Creates a modern aesthetic

If you generally opt for more of a modern interior design and aesthetic, a single-storey extension is a great fit. Through the use of large windows, skylights, and contemporary materials, you can create a cutting-edge and future-proof extension.

Cost-effectiveness

Single-storey extensions are very cost-effective, making them a great solution for those looking to grow a family. In many cases, people choose to move homes altogether due to the need for more space. However, this type of extension can provide much of the needed space without moving altogether.

Types of Single-Storey Extensions

Before we move on to the costs of single-storey extensions, we want to include a section that covers the various types of single-storey extension designs.

Single-storey wrap-around extensions

Wrap-around extensions involve bringing together a side and rear extension into a continuous design. They generally require quite a lot of structural work and do not often fall under permitted development rights Despite this, they can be a great option for homeowners who require extra space without compromising on your outdoor space at the same time.

Single-storey rear extensions

A single-storey rear extension is another popular extension design and is largely used to expand a kitchen area or living space. These types of extensions can bring about additional natural light and usually have a flat roof to emphasise modernity.

Single-storey bungalow extensions

If you are extending a bungalow, you have several options. Again, the most popular type of bungalow extension involves extending to the rear (back). This can sometimes involve reducing your garden space but it is a great way to modernise an existing house.

Single-storey side extensions

Where an alley is present or a pathway adjacent to the house, there is an option to extend your home to the side. Despite being a smaller extension option, you may be surprised at how much new life this type of extension can bring about to your home. Side extensions are usually designed to be a utility room, home office, or other smaller space. However, the options are vast and do not always require planning permission.

Cost of a Single-Storey Extension

The expense of a single-storey extension can significantly fluctuate based on several key factors:

• Size
• Complexity
• Materials
• Quality of the selected Contractor
• Location in the U.K.
• Condition of soil and existing building

The cost for a single-storey extension in the U.K. typically ranges from £50,000 to £250,000.

Designing Your Extension

Now that we have covered the intricacies of building a single-storey extension and the process that you will have to follow for planning permission, we can discuss the design principles and options.

We have helped many clients to achieve amazing extensions that have transformed homes. Take a look at our previous projects to get an idea of what can be achieved with this type of architectural project.

Single-Storey Extension Roof Options

When planning a single-storey extension, you will also need to consider which roofing type suits the design project. There are only two options that apply to a single-storey extension:

Pitched roof extension

A pitched roof is a roof that is angled to some degree. This roof is typically used to keep a traditional architectural design in place and blends well with period properties. A pitched roof is also better for draining water and the extra height will allow for added insulation.

Flat roof extension

A flat roof extension is great for any modern extension. This roof type allows natural light to flood into the space and is very cost-effective, However, the downside is that this roof type is often associated with more ongoing maintenance and is not particularly great for rainwater drainage.

Doors for Single-Storey Extensions

Moving onto the next consideration: doors. There are many options that you can incorporate into your extension build, though an experienced design studio specialising in architecture can point you in the right direction if you are unsure of style.

Sliding doors

Sliding doors are a very popular option for a residential single-storey extension, mainly because they can bring so much natural light into a space, creating a more open environment. Sliding doors can be fully glazed and easily fit into an existing structure. They contribute to a modern aesthetic and look beautiful.

French doors

For more of a classic touch, French doors are a good option. They are not as expensive as sliding or bi-fold doors and they can be added in multiples to create a similar effect. They are a more cost-effective option and can add timeless character to an extension.

Bi-fold doors

Bi-fold doors have grown in popularity over recent years, especially throughout contemporary builds. These doors are made up of several panes of glass which on hinges open in a concertina style. You can enjoy a fully opened-up wall, making this door type ideal for entertaining during the summer months.

Single-Storey Extension Ideas

Finally, we want to provide some inspiration for your single-storey extension. Whether you want to build a rear and side extension or are looking for a home extension that merges with your current home’s style, we have some excellent ideas to share.

Minimal Wraparound Extension

Wraparound extensions are often renowned for being large, though we think they can be a great option if you are seeking to keep an outdoor space relatively untouched. By extending a property to the side slightly and towards the rear, you can create wonderful interior spaces such as large open-plan kitchens/diners, or an additional living space and bring in more light. Many families find that it is easier to expand their house than up and move to a new property altogether. When you add floor windows to a new extension and stylish doors, this can have a profound impact on the floorplan of the home and make the space far more suitable for its owners.

Contemporary Single-Storey Extension With a Flat Roof

This is perhaps our favourite type of extension and when created with consideration, these extensions can bring about amazing results. Flat roof extensions typically are cheaper to build which leaves more budget to play with when it comes to interior fit-out costs. One example of a house extension we created in this style is the Laleham Village project which focused on fusing modern luxury with the serenity of Japanese design. By creating a single-storey rear extension, we were able to breathe new life into the property and drew on elements of zen philosophy by installing large glazed doors framing views out to the garden.

Book a free consultation call with our expert architectural studio today and start your single-storey extension project.