West Street DA7

Architects London example residential project
Denmark Hill SE5
dormer loft conversion interior design
Wallbutton Road SE4


Everything You Need to Know About End Terrace House Extension

Lucky for you, we documented each step that we took to renovate this end terrace house by adding a ground floor and first floor extensions. Use this proven process to produce the same results for your end terrace house extension project.



Our client came to us with an ambitious proposal: they wanted to enhance their existing end-of-terrace family home by adding a wrap-around rear extension to the garden and a first floor extension to double their family communal space. These changes involved several issues. First, we had to be sure we were retaining as much outdoor garden space as possible, and the new open-plan kitchen-living space had to feel as though it was extending out of the garden. We also had the challenge of moving the bathroom upstairs, as it was previously accessed via the kitchen on the ground floor.

To do this, we had to overcome three major challenges: first of all, being a Victorian property with a closet wing, the house had two levels on the upper floor. Second, we did not want to affect the head-height on the ground floor. Lastly, it would be impossible to raise the rear roof without affecting the neighbour’s access to daylight or sunlight. It was also important that our end terrace house extension design did not jar against the surrounding context. Rather, the extension design would need to conform to the look and feel of the local neighbourhood. On top of it all, our extension drawings had to comply with the policies of the local planning authority – specifically, we had to ensure that the neighbours remained unaffected in terms of their access to daylight, sunlight and privacy.


We addressed these issues one by one. FIrst, we worked as a team around the clock, refining the designs again and again, seeking an extension design solution that would retain as much garden space as possible for the little ones to run around. Moreover, we made sure that the ratio between indoor and outdoor space would suit the client’s daily lifestyle. And by adding a large bifold door to the rear, we were able to generate the sense of flow between the inside and outside that our client had wanted. With the new, spacious bathroom now located upstairs, a water closet was conveniently installed underneath the stairs on the ground floor.

To reduce the impact of the double-storey extension on the neighboring property, the existing rear closet roof was integrated into the roof of the new first floor extension. The result was a typical triangulated pitched roof, which improved the internal height of the rooms, but did not affect the height of the roof at the point closest to the neighbouring property. We were therefore able to ensure that the neighbour’s access to privacy, daylight and sunlight were not affected by the development, which was absolutely key to satisfying the planning permission requirements for this kind of extension.

By taking a cue from the existing materials and finishes, we were able to add a consistent and sympathetic end-of-terrace house extension to the property. Similarly, we made sure that, the new windows installed on the side of the house were modern, they reflected the style of the existing house. In this way, the proposed extensions were designed specifically to harmonise with the surrounding context.

To provide the right solutions, we worked closely with our client and designed an end-of-terrace house extension that would provide plenty of space for the family to grow. With these additions, we were able to unlock the potential of our client’s house and effectively improve the life of each family member. We were also careful to provide a great amount of flexibility, so that future residents would be able to use the space in their own unique way. At Urbanist Architecture, we make it our mission to provide carefully designed spaces that increase the value of a person’s home and the quality of their life. And that’s precisely what we did with this project.

Of course, the benefits of using our services extend far beyond the results above.

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  • Increase comfort

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