Downton Avenue SW2

new build flats planning application
Sternhold Avenue SW2
listed building restoration
Gordon House St Margarets


How You Can Maximise Your Property with Multiple Flat Conversions

Lucky for you, we documented each step that we took to help our client convert his house into flats to create a sustainable source of income for him and his family. Use this proven process to produce the same results for your flat conversion project.


multiple flat conversionmultiple flat conversion


This was a great property to get our hands on, as it offered us plenty of scope for remodelling. In its present guise, it is a spacious five-bedroom (of which two en-suite), two bathroom handsomely-proportioned detached house with a large garage. However, the owner’s parents had decided to retire to the South Coast and the house was too large for the current occupants. The garage was wasted space, as they didn’t have a car or require storage, so the owner took the decision to downsize and also provide an income stream for his family by creating a total of three apartments.

The owner had tried on various occasions over the past decades to proceed with his project, but to no avail - planning permission had been refused every time. When we took on the project, we needed to find a design and a process that would get our client the results he wanted.


To get the best value from the house, we had to pick our battles and maximise the space available. Given that the house had five bedrooms, we thought that a considered redesign and a new layout could really transform each floor into comfortable accommodation.

After perusing the project, and studying the chequered planning history of the site, we thought it wisest to proceed in stages to ensure we got everything we wanted. Rather than applying for the entire project in one go - which hadn’t worked in the past - we decided to move in three parts:

This broken-down approach helped us to focus better on the individual stages to ensure we had made the right calculations for each section and had a greater chance of getting the planning permission we wanted.

The first application covered the roof extension to provide habitable space on the top floor of the house, as well as to convert the triangular garage into an en-suite bedroom, and add a small rear extension to replace the outside toilet and enlarge the kitchen area.

The second application was again related to the top-floor development, as it was to build a large north-facing dormer window at the rear of the roof (previous applications had been refused due to a street-facing dormer) to bring light into the room.

The third application, once everything else was in place, was to get the planning approval to convert the entire house into discrete apartments. With the garage now an en-suite bedroom, this made the ground-floor accommodation suitable for a three-bedroom apartment with a spacious living and dining area. On the floor above, we were able to create a similar-sized two-bedroom apartment, again with roomy living quarters and one of the bedrooms en-suite. On the top floor, thanks to the space provided by the hip to gable extension and rear dormer, our entrepreneur could put a light-filled open-plan studio apartment as another asset to rent out or sell.

Despite the many setbacks we faced on the project (largely down to a picky council rather than design issues), our customer was very happy with the result - so much so he filmed a review for us!

Take a look at some of our other developments and see how Urbanist Architecture could help you to get the best out of your assets!

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™




WordPress Themes