Brookbank Road SE13

dormer loft conversion interior design
Wallbutton Road SE4
Caddis Close HA7


Imagine yourself designing and building your beautiful rear extension and loft conversion.

Lucky for you, we documented each step that we took to renovate this terraced property with the addition of rear extension and loft conversion. Use this proven process to produce the same results for your rear extension and loft conversion project.



When our clients first came to us, it was clear that they had a diverse set of opinions, and they needed help finding creative extension design ideas that would address each of their needs. As a large family, they faced a number of spatial limitations in their day-to-day lives. Though the family was made up of three children and two parents, they only had three bedrooms and nowhere to study, so it became our mission to provide our clients with designs that optimised their space for the practicalities of daily life. During our journey, we faced a number of space constraints and policy limitations. In order to build the rear extension and loft conversion, we had to consider the potential impact of the development on the neighbouring amenity. In particular, we observed that the proposed extensions might block some sunlight to one of the rear-facing windows on the adjacent property.

Moreover, the first-floor rear extension posed issues with regard to the streetscape from the rear. As for the L-shaped dormer loft conversion, it was imperative that our extension design conformed to the existing roof typology. Taking into consideration all the design limitations and the client's needs, we launched our planning strategy to deliver high-quality designs. To address the diverse opinions offered by the client, we acted as a mediator, seeking solutions that benefited all the relevant parties. To make communication easy, we held in-office meetings where we proposed a series of potential design options.


With our negotiations, our client settled on a first-floor rear extension and an L-shaped dormer loft conversion to make room for an extra bedroom and study. With this extra space, the family could have a lot more breathing room and freedom in their day-to-day lives, and a greater flow of light into the ground floor of their home.

Once we settled on a basic design, we had to devise a strategy for obtaining planning permission for the proposed development. To increase our chances of success, we decided to submit two separate applications: one full planning application for the first floor rear extension and one lawful development certificate application for the L-Shaped Dormer loft conversion.

With the first-floor rear extension, however, we faced two major planning issues, Firstly, the proposed extension could negatively affect the outlook of a neighbouring window. Secondly, the proposed extension might negatively impact the streetscape from the rear. To address the first problem, we argued that, since the neighbouring window did not belong to a habitable space like a bedroom or living area, the outlook issue was moot. With regards to the second concern, we highlighted a neighbouring rear extension that had already been approved by the planning authority. As this neighbouring extension was larger than ours, we were able to successfully argue that, relative to this other extension, our proposal would not pose any negative impact on the streetscape.In the end, our arguments were effective, and we obtained permission for the rear extension.

Because we applied for the L-Shaped Dormer loft conversion under permitted development, we weren't beholden to the same type of planning considerations as the rear extension, but we had to be sure we were maintaining the property's original roof typology. To do this, we used materials that matched those of the original roof, and chose an L-Shaped conversion to provide a design more sympathetic to the roof typology than any other option. With the appropriate designs, we easily obtained the lawful development certificate for the dormer loft conversion.

In the end, with effective planning strategy and creative design solutions, we were able to obtain permission for both the first-floor rear extension and loft conversion, and turn the vision of our clients into reality.

By communicating clearly with the client, we were able to create a set of optimal designs that matched their needs and provided them with plenty of space and freedom. Moreover, with the right planning strategy, we were able to take their vision and turn it into a reality. At Urbanist Architecture, we strive, with each and every project, to develop designs that increase the value of our client's home and the quality of their life.

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

We surveyed our clients and asked them to name the three benefits of our services that they found most useful. Here are the top benefits as cited by more than 100 survey respondents.

  • Get access to proven strategies

  • Have a dedicated architect

  • Minimise risk and feel safe

  • Make the project stand out

  • Save time

  • Save money

  • Save effort

  • Get photorealistic 3D visuals

  • Increase space

  • Increase comfort

  • Increase value

  • Get access to Urbanist Project App™




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