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Green Lane Avenue
Green Lane Avenue
London, United Kingdom
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Green Lane Avenue
London, United Kingdom
Firm
Type
STATUS
Built
YEAR
2016
SIZE
1000 sqft - 3000 sqft
BUDGET
$100K - 500K
Photos
A private Client in Walton-On-Thames approached us to convert a small existing 67 sqm house with low ceilings and traditional 4 room layout, and improve the layout to convey a feeling of spaciousness and lightness.
This was a challenging idea as the narrow site did not allow for much flexibility. During the design process it soon became clear that it is most beneficial to move the stair away from its existing central cross position, which was splitting the floor layout in two equally sized rooms per floor, to the narrow strip between the existing building and the site boundary to the south and rotate it to follow the length of the building.
This offered multiple benefits:
- a clear differentiation between living and circulation spaces.
- Utility space and additional WC neatly tucked away underneath new stair
- open up and connect kitchen, lounge and garden
- additional bedroom on first floor
Just by extending the 1.8m wide south strip to the site boundary we icreased the total floor area to nearly 170%, giving the space to add a third bedroom upstairs, where previously the original stair was located. The new extension also provided space for two bathrooms to be added to the first floor, of which one ensuite to the master bedroom.
To achieve Part L energy compliance, the foundation, roof and walls have been insulated. To not lose valuable usable internal area the walls have been insulated via an ETICS (External Thermal Insulation Composite System). However, in certain areas the London Stock brick wall was partially left exposed to remind of the original house materials and design, inside as well as outside.
By insulating the roof right under the roof tiles, the loft becomes a usable heated storage space.
In short the following design elements were undertaken:
- Move stair to long strip along south site boundary
- Open up ground floor wall and add extension to the east to open up living space to garden
- Lower ground floor slab to achieve higher ceiling
- Open up space around stair in first floor to achieve a “double height” space, with rooflights to allow for a bright work environment
- Use ETICS to insulate building per Part L requirements to maximise usable space, and to provide sustainability future proofing
This was a challenging idea as the narrow site did not allow for much flexibility. During the design process it soon became clear that it is most beneficial to move the stair away from its existing central cross position, which was splitting the floor layout in two equally sized rooms per floor, to the narrow strip between the existing building and the site boundary to the south and rotate it to follow the length of the building.
This offered multiple benefits:
- a clear differentiation between living and circulation spaces.
- Utility space and additional WC neatly tucked away underneath new stair
- open up and connect kitchen, lounge and garden
- additional bedroom on first floor
Just by extending the 1.8m wide south strip to the site boundary we icreased the total floor area to nearly 170%, giving the space to add a third bedroom upstairs, where previously the original stair was located. The new extension also provided space for two bathrooms to be added to the first floor, of which one ensuite to the master bedroom.
To achieve Part L energy compliance, the foundation, roof and walls have been insulated. To not lose valuable usable internal area the walls have been insulated via an ETICS (External Thermal Insulation Composite System). However, in certain areas the London Stock brick wall was partially left exposed to remind of the original house materials and design, inside as well as outside.
By insulating the roof right under the roof tiles, the loft becomes a usable heated storage space.
In short the following design elements were undertaken:
- Move stair to long strip along south site boundary
- Open up ground floor wall and add extension to the east to open up living space to garden
- Lower ground floor slab to achieve higher ceiling
- Open up space around stair in first floor to achieve a “double height” space, with rooflights to allow for a bright work environment
- Use ETICS to insulate building per Part L requirements to maximise usable space, and to provide sustainability future proofing
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