Wrap around extension

Guide To Wrap Around Extension

Many people are familiar with two styles of extension; rear and side extensions. How about having a combination of the two? This combination is known as a wrap around extension, and it allows you to explore as much space without eating deep into your garden. Read on to find out everything you need to know about wraparound extension.

What's in this guide?

  1. What is A Wrap Around Extension
  2. Planning Permission
  3. Regulations You Need To Know
  4. How Much Does It Cost
  5. Factors That Influence The Cost

What is A Wrap Around Extension

wrap around extension, open plan living room

If you are familiar with a side and rear extension, you can imagine a hybrid of the two. Wrap around extension is a hybrid of side and rear extensions. It basically forms an L-shape around the existing house.

As the name suggests, wraparound extension typically covers both sides of the house; hence, adding extra width from the ground floor. This extension is typically between 15 to 60 square metres, and it can either be single or double height.

This L shaped extension helps you to utilise the available space. With proper structural calculations and space planning, you will create a perfect space. Also, you can execute this project regardless of whether you have a flat roof or have special plans for ground floor flats.

Why choose one

livign room with sofa and kitchen

A wraparound extension is a combination of side return and rear extension to offer an L-shaped space. This extension type utilises the side return, wasted space, and building out the back without eating up your garden.

With the appropriate design and execution, you will get a bigger and beautified living space with a better connection to the garden. It's also an opportunity to bring more light into the centre of your home and improve the link with the outside space. You gain lots of extra space without eating up too much of your garden.

Ultimately, a wraparound extension is a good way to increase your living space. Besides, this extension type is flexible. It allows you to dramatically restructure your house and add new functional spaces.

Whatever you intend to add to your space, you can achieve it with the right design of a wraparound extension.

Looking to build a wrap around extension? Let Proficiency's team to help you.

Other reasons why you should consider choosing one include;

staircase from metal
  • It allows you to create more space like a utility room and establish your kitchen extension ideas for a semi-detached house
  • A wraparound home extension gives room for plenty of design options
  • It allows better connection to your garden space
  • It helps you to utilise your redundant space and allows more light into your home
wrap around l shaped conservatory

Exterior styles

Wraparounds offer an opportunity to distinguish between front, side, and rear additions. For example, the side return could be all glass, while the rear area could be glazed brick or timber.

Wraparound extensions can help retain a sense of the original footprint.

Most times, the choice of wrap around extension styles depends on your preference. You can consider using the existing brick and wall style if you want a similar style with the existing properties. It will also keep the building seamless, especially for a kitchen extension.

Another viable option is the rendering style. Asides from the fact that rendering is cost-effective, it brings contrast to the building work. It blends seamlessly with the original home, and it is a suitable alternative where brick is less appealing.

The timber and oak style can also look appealing in your structural glazing. It helps you to blend the extension with the garden and offers an exciting warm look. Besides, it distinguishes between your initial buildings and your extension.

Alternatively, you can try the steel cladding if you want a contemporary design. This style gives a striking design, especially when you combine it with other glazing features.


Planning Permission (Permitted Development Rights)

All wraparounds must be submitted to your local planning authority for approval and relevant permissions. Planning permission lasts for three years and can boost the price of your home even if you decide to sell without building.

Some local authorities have a policy that doesn’t allow wraparound extensions, such as New Forest District Council, which has a design guide.

Two-storey extensions are highly unlikely to be granted permission on terraced homes and, even single-storey may be restricted on size and height.

Likewise, you can not join rear and side extensions around your property without permission.

If you want smooth planning permission, you must ensure that your extension design does not affect your neighbour's light. It shouldn't affect their privacy either.

You might not get planning permission for wrap around extension if the existing house is terraced. So, it is best to work with planners and architects familiar with the planning permission process. Also, keep in mind that you would be required application fees, which vary depending on the council.

Other Regulations You Need To Know About Wrap Around Extension

front of row house

Any home extension must follow due regulations and standards. A wraparound extension is not an exclusion to this condition. Although they are similar with double-storey extension and single-storey extension, they are not entirely the same.

Since you are already aware of planning permission, let's check out some other essential regulations for your building project.

Building Standards and Regulations

All types of home extension or building projects must conform to certain standards. Before raising your dead space with your wraparound extension, you must find out about this project's minimum standard and requirements.

It is crucial to ensure that your structural engineer prepares drawings and calculations that conform to the regulations. These details are essential for securing building approval.

Wrap around extension with skylight

Right of Light and Privacy

Regardless of how you are bringing up your space with wraparound extensions, it would be best to respect your neighbours. Your wraparound extensions' external walls must not violate your neighbour's right to natural light and privacy.

This law is particularly essential in England and Wales. Remember that your wraparound extensions also include rear extensions, rear walls, and ceiling windows.

Party Wall Act

spacious open plan room

The Party wall act is another essential consideration when raising your dead space. This act requires you to serve notice to your neighbours before going ahead with your wraparound extension project.

This act is paramount in England and Wales. It is also essential if you want to construct the wraparound extension on terraced and semi-detached properties.

How Much Does it Cost

This house extensions can be a great way to maximise space and add value to any property. An average extension price can vary depending on many factors, such as the size of the house and the space needed. It is crucial to note that an extension is not similar to the required cost to build a house.

The average cost of building a wrap round extension varies depending on location and some other factors. The average cost of constructing a 45 square metre in London varies between £75,000 to £145,000.

The cost of a house extension is slightly lower outside London. You can construct a similar dimension of wrap outside London for a cost of around £60,000 to £120,000.

corner of a modern house extension

The unit cost required to put up an optimal space-saving wraparound extension include;

  • Building regulations approval application fees
  • Architect's fee, which varies between 3% to 7% of the construction fee
  • Survey cost (£500 to £1,500)
  • Party wall agreement fees
  • Building control charges
  • Construction materials
  • 20% VAT
  • Cost for special fittings like sliding doors in various spaces like the dining area

Asides from the above costs, you might also have to pay consultant fees for;

  • A general survey of your existing building and feasibility of a new extension
  • Ecological survey to check the impact of your project on wildlife and forest reserves
  • Flood risk assessment to ensure that you are not prone to flooding
  • Tree report to know if you have to eliminate or shift a tree
  • Building control fees or building control approval to ensure that you follow planning restrictions and maintain optimal structural integrity
  • Insurance and warranty investments for big projects like a wraparound extension is usually advisable
wrap around kitchen extension

Factors That Influence The Cost of Wraparound Extension

The cost of constructing a wraparound extension is an aggregate of various construction costs. These costs make up the overall cost required to complete this project. Find out a list of these factors below:

Construction Materials

Construction materials play a major role in the cost of completing a wrap around extension. The price of building materials varies with location.

Besides, some construction materials are more expensive than others, depending on the type of house extension. For instance, you might have to prepare for higher costs if you intend to include a new space like a dining room and an extra bedroom.

Professional Fees

The professional fee involved in constructing a wraparound extension is almost inevitable. These fees involve the cost of hiring professionals like structural engineers, architects, builders, quantity surveyors, etc.


Rear garden of a property

Location is another major factor that determines the cost of a wraparound extension. The location of your property can influence every other cost factor, including professional fees and construction materials. In fact, payments like application fees and taxes vary with location within the United Kingdom.

Design and Style

The choice of design and style you intend for your wraparound extensions will also influence the cost. For instance, the timber or oak style is more cost-effective compared to the design using bricks.

Size of Extension

The size of your wrap around extension is another influential factor. Wraparound extension cost is directly proportional to the size of your property. So, if you have a big extension size in mind, it is best to prepare a fat budget.

Wrapping up, executing a wraparound extension is not as difficult as it seems. Start by having a clear picture of what you intend to create. Next, engage the service of reliable and efficient professionals to help you to actualise your plans.

Have an idea of the average cost and prepare your budget to match it. Also, it is best to ensure that your extension plan meets various building regulations and permitted development rights. Note that the cost depends on various factors, and it varies with location.

Clara Annesley

Clara Annesley is an interior design and construction content writer. She holds a BSc (Hons) in Architectural Design Technology from the University of West London. Clara specialises in residential construction for topics like health & safety, architectural design and writing cost guides for renovation and remodelling projects.