#30 Pump House Close

The existing house, designed over 25 years ago, is a freehold end-of-terrace family dwelling arranged over three storeys, with an additional terrace and mezzanine level within the roof space.

The property was built within the curtilage of the London Hydraulic Power Company Pumping Station—a Grade II Listed Building.

Planning permission has been granted for remodelling the existing roof and adding a conservatory at terrace level, converting the ground-floor garage into habitable space, inserting two new windows to the rear elevation, introducing an integrated solar green roof system.

Thanks to the difference of level of around 3 meters from the current ground floor – accessible from the courtyard on the North-East side of the building - and the street level on the South-West side along Canada Estate, it will be possible to create a new basement level, underneath the current ground floor, benefiting of a window towards Canada Estate, improving natural light and ventilation for the room at this level.

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Brief

Complete remodelling and extension

The planning drawings describe the general scope of the project as follows:

Complete stripping of internal floors, stairs, and partitions.
Demolition of existing roof and Creation of new top-level room, including flat roof, glazed conservatory to terrace.
Creation of new basement level.
Addition of two windows to the rear and alteration to garage door.
New internal layout, staircases, etc.
Stripping and replacement of existing MEP, including electric and water meters to be moved and gas meter to be removed.

TWO ALTERNATIVES LAYOUT HAVE BEEN DEVELOPED AT THIS STAGE:

OPTION 3.2

It requires complete demolition of existing structural floors and stair

OPTION 3.3

More conservative, intermediate structural floors and staircase are retained

BOTH OPTIONS HAVE THE SAME LAYOUT AT THE BASEMENT LEVEL.

Additional features

The scope should allow for the following additional measures:

Green roof with photovoltaic panels (solar green roof)
EV charging point
Additional internal insulation to all existing external wall (insulated plasterboard)
Internal floors to be as per PART E Robust detail to enhance acoustic insulation.
Replacement of all windows to the rear, to make them openable and matching existing.
Heat pump and induction hobs to have a gas-free house
Air conditioning (Basement and top level only) and MVHR throughout.
Underfloor Heating
Fire suppression system throughout and Grade D fire alarm system with remote control
Lighting System with Philips Hue product.

LAYOUT 3.3

This option is more conservative than the previous one, since existing structural floor and stair are maintained.

The basemen layout is the same of the alternative option 3.3.1.

Even though all pipes well be stripped out, their position will remain as it is now, allowing a more straightforward execution of the MEP works.

By maintaining the stair and the structural floor, besides savings for demolition, disposal, and reconstruction, it is expected an optimisation of the timeframe, as at least Level 1 and 2 would not require any significant structural work.

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#30 Pump House Close

Planning Drawings

Brief

Complete remodelling and extension

Additional features

LAYOUT 3.2

LAYOUT 3.3

Virtual Tour: Option 3.0 (NOT UPDATED TO 3.2 OR 3.3)