Guide To Wrap Around Extension

Lots of people choose either rear or side extension to extend their home. However, you can combine rear and side extension and perform wraparound extension in your home. Wraparound extension is a proper choice for houses which have an alleyway leading to the back of home or L-shaped houses. Both of these features could be easily found in traditional Victorian homes.


Main advantages of a Wraparound Extensions;

● Opens up the opportunity of performing several design options

● Side alleyways can reach their maximum potential

● Open Plan Design for kitchen and dining room areas become possible

● To get the maximum natural light in the existing spaces and new spaces we can create a courtyard within the extension

● If the garden space of your home is short, a wraparound extension would be a practical solution.

● The extra width of the property would be used to make space for additional bathroom or storage.

● There are also some risks for wraparound extensions. First of all, the extension would prevent your neighbours’ home from getting natural light, but there is a solution for that. Instead of a flat roof, we can create a pitched roof on your extension, and the problem would be solved.

Moreover, the noise from washing machines and clothes dryers could be a problem in open plan house layouts. However, we can fix this problem by developing a utility room below a staircase or at the edges of the property.

Should I Obtain Planning Permission?

Although you do not need to get planning permission for many other types of extensions, wraparounds need planning permission because they are not covered by permitted development rights. We will do our best to finalize the planning permission process in a very short time.

What Do We Offer To You?

Thanks to our great experience in planning, we can maximise the size of the extension and present a comfy living space to you. You can use this space as a new kitchen, living room or both. As Studio20 Architects we are always ready to create the best addition for your home. Get in contact with us and find out what we can offer to you !

Building Extension


Studio20 Architects is based in Richmond where most of the houses are not big enough to meet the needs of many homeowners in today’s conditions. We do our best to find solutions for our client’s space issues, as an architecture firm specialised in side-return and wraparound extensions.

(You may take a look at our portfolio to see some great examples) Many clients call us for refurbishing their home and bringing modern standards to it. However, there are other reasons to get in contact with a professional architecture firm like Studio20 Architects such as;

● Needing More Space In Home

● Needing bigger rooms for children

● Wanting a guest room, room for au pair or elderly people in the home

● Bringing more natural light the house

● Wanting an extra space to hide stuff

● Gaining a laundry and larder space

● Relating garden to the house in a better way

To fulfill all of those needs, we not only extend but also enhance the space you already have. Studio20 Architects use clever space planning methods to extend redundant areas. We also integrate key features to present you a better project. Our key design features are;

● More Daylight

● Storage

● Wow Factor

● Flexible Spaces

Experienced and professional architecture firms can add this value and vision to your home. When you work with experienced architects, your house will look more elegant, and it will be more functional at the same time.


When we look at the most homes in the London area or other parts of the UK we can see that most of them are “L-shaped” terraced or semi-detached homes. Majority of the houses were built in the Victorian era, and their main characteristics are double-storey main block (the terraced element) with a two-storey back addition.

The main block will consist of a front living room, and rear reception or dining room with two bedrooms above. There is generally a kitchen at ground floor in the back addition, a.k.a outrigger. Sometimes there is a bathroom at the rear, and another bedroom above this. In some cases, there could also be a bathroom if it suits ground floor arrangement. Separately from the layout, the L Shaped plan is a good choice for the archetypal “family home” with 3 bedroom, a bathroom, a kitchen and two living rooms. Below, you can see a typical plan of L-shaped homes.

In most cases, the main block is higher than the back addition. The rooms located in the back addition are generally accessed off half landings on the staircase. Mostly, the loft is not used, and there would be an unneeded front to the side of the back addition to the ground floor. These characteristics make this type of building the perfect places for extension and space planning. This type of project is very popular in West London where houses are really expensive. Because extensions and renovations makes sales prices higher, many people choose extensions instead of buying a new home.


As Studio20 Architects, we designed more than 200+ projects completed in our 5+ years of history, and many of them are wrap around extensions. Thanks to our experience in the field, we know that they are the keystone of a family home construction project. What is a “wrap-around”? Wrap around is a ground floor, L shaped extension that fills in the garden to the side and rear of the back addition. Wraparound is generally combined with a loft conversion and internal space planning to change the layout and usage of the house. The focus of this post is on the key shapes and aesthetics that could be used for wrap-around or L-shaped extensions. These are the basic forms. However, when the brief is layered and site constraints take into the account, these basic forms could turn into very unique ones. In this way, the genre always stays fresh!

Below, there is a typical terrace property and area which has a newly added space;


There are some common shape varieties for the wraparound. The main factors which are effective on the shape type are site constraints and the brief & preferences of the client. In some cases, planning and neighbour issues could play a role while determining the shape. If adjoining houses are already extended ones, you may follow a different approach for your brief. At our first meeting after site survey and site appraisal, you will have our recommendations if you experience this kind of issue. They most important design forms that we can adopt are


The wedge is a great type of shape for the people who need a lower flank wall (mostly because of neighbouring constraints) but could also have a taller side. The wedge rakes from a lower side (around 2.1 m) to a much taller side. Two main advantages of the wedge are that; a WOW factor would be created thanks to the taller side and vaulted ceiling, and the wedge presents a wonderful sense of space. Studio20 Architects also add glass which sweeps up the slope, and we can also design a rear elevation for both doors (grand sileders, and picture windows). Concealed gutters and downpipes would be the final touches, and they would keep things crisp, and the main focus will be design.



There are high flanks on the left and right side of the flat-roofed, simple L-Shaped box. They are simple designs. The archetypal shape is formed a flat roof capped with an aluminium coping detail and large glazed rear elevation. This type is a cost-effective one because of the lack of complexity in the concept. It allows for rooflights or swathes of glass based on the budget and orientation. In most projects, the structure is hidden, and the rear elevation flamed with a rendered clad shape around the large doors/windows.


It resembles the flat roof design that you can see above. However, it has a step along one side. We generally use this concept when we must reduce the height along one side because of neighbour considerations or planning restrictions. The step could be seen from the rear garden area. Thus, an evaluation in the glazing layout, gives the rear elevation an interesting characteristic and presents some shape and split areas. Sometimes, the step in the roof have a window in the step up, and formation of rooflights or a strip of glass could be performed in the flat roof areas if possible.


The lean-to is the most classical one, and compatible with the shape. However, it is not a design focused one. We do not perform the lean-to because it brings a slope down to the rear garden, and shadows on the ceiling could be formed due to various slopes. However, it also has some merits. We generally use this shape when we need to comply with the roofscape of the house because of the planning constraints. In most projects, the lean-to can appear to be a part of the original design thanks to carefully placed rooflights and traditional materials.


This is a popular shape among our clients as you can see some examples on our site. The apex can solve many problems about your property. Apex is a good choice for many clients because it gives height, and lower flank walls appease planners and neighbours. Similar to the wedge, the apex design has concealed gutters and exposed structure in most cases. To present a real WOW factor, we can add frameless glass to the apex, and a triangle glass panel over the doors. Apex is a half traditional and half contemporary shape that could be finalized industrial or traditionally.


Studio20 Architects want to support you with the right advice. First of all, we do not have any fixed approach or design preference that we can use in several projects. All designs could be customized, and adjusted depending on the site requirements and client brief. That’s our biggest advantage; you can choose to use more or less glass, zinc or tilled materials, or white minimalism. Materiality and the outer appearance are both important for us. We also give importance how daylight is brought to key areas of your by the glass frames.

Up to now, you have seen some examples of wraparound in our portfolio and the most important factors for wraparounds. They can help you to have an idea about wraparounds. If you want to start this type of project, please get in contact with Studio 20 Architects and arrange a free stove survey. Show us what you plan for your property, and we will realise them for you.