Project schedule #2 Home extension in East Sheen

Project Schedule

Year: 2017-2018

Location: East Sheen, London Borough of Richmond upon Thames

RIBA Design Stages: 0-5

Architect: Square One Architects

Structural Engineer: Glencross & Hudson

Building Control: Building Control Approval

The client for this project, a family of 5 with 3 small children, came to us in 2017 with a very specific brief. They had obtained planning permission using another architectural firm; however, they were not happy with the overall design.

The original project included a side extension, a rear extension and a first-floor infill extension. Despite getting planning approval for a significant additional square footage, the client was not very happy with the overall design and felt that not enough time and care had been spent in the  initial design phases (concept and schematic design) in order to agree a plan.

In this instance our first goal was to optimize the existing plan. Since the very beginning it became obvious that we would have had to go back to the planners with an amendment to the original planning application. The new plans were thoroughly discussed with the client until the layout was totally agreed.

Revised drawings were then submitted and subsequently agreed with the council. The side extension included a bedroom with a small living space and an en-suite bathroom to be used as a granny annexe for the clients’ aging parents.

The rear extension included an open plan kitchen, dining area and living space for the family.

The first-floor infill extension included a new large family bathroom (the original property was curiously lacking a shared bathroom and featured only two en-suite bathrooms).

The client also asked us to design a loft extension for the property an include a bedroom with an additional en-suite bathroom to be used by their au-pair.

The original four-bedroom house was turned into a generous 6-bedroom property with a well-proportioned family bathroom, three en suite bathrooms and plenty of open plan space to be shared with the client’s growing family. We were thoroughly pleased with the results and received a very positive feedback from the client.

BEFORE AND AFTER IMAGES

Rear elevation

Kitchen and dining area

Kitchen and living area

Ground floor entrance

Guest WC

Work in progress: House extension in Kingston

Another view of the preliminary design for a ground floor rear extension to a semi-detached house in Kingston. The intent is to integrate the existing window and chimney breast with the new kitchen, creating a low window seat that can be enjoyed by the family.

In this view we tried to highlight the relationship between the kitchen area to the left and the open plan dining space to the right. The seamless ceiling transition helps to make these two spaces feel connected and cohesive from a design perspective.

The same floor will be used for both the existing floor plan and the new extension, leaving the two structural piers as the only demarcation between the original rear of the house and the extended portion.

An interesting feature of the existing house is the presence of a side window that is our intention to turn into a window seat that will feel like an extension of the kitchen itself.

Window seats are a fun feature that help creating some interesting corners that can relate to other elements of the room, in this specific case the kitchen island and breakfast bar right in front of it.

The kitchen, island, window seat and the extension’s window and skylights will all contribute to create an interesting space to be lived by our clients.

Daylight and luminance analysis for an extension in Kingston

We regularly use analysis tools to predict the amount of daylight received in a space as a function of the openings size, location and moment of the year. In this view we are showing the predicted Luminance on the 21st of March at 12.00 for our new ground floor extension in Kingston.

Daylight analysis tools offer to foresee the exact amount of daylight received by a determined space in several moments of the year. These tools are always very helpful in general, but they play a crucial role in our designs. By scrolling through our project images it is easy to see that daylight intake is a common thread, we are convinced that daylight within a household plays an huge factor in the health and well being of its inhabitants and we feel a duty as Architect to try and optimize this factor in all our projects.

In the case of this project for a rear extension in Kingston, we analysed the daylight intake with a configuration of a sliding door at the right, a generous window at the left and three skylights placed in the middle of the rear extension’s ceiling. With this type of diagram, it is very easy to see that the daylight will be very evenly distributed throughout the floor plan without being overwhelming (refer to the area in green).

Lighting design is a complex discipline, but we try to explain these metrics and parameters to the clients in a very straightforward way so they can understand the rational behind the dimension of the openings in their extensions.

These tools have become an essential part of our work at any stages of the design, especially at preliminary stages prior to submitting a planning application. We look forward to seeing this project finished and show this point with the final pictures.