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Fir View Potten End


We were appointed by the client to design a transformational, contemporary refurbishment and adaptation of an existing chalet bungalow.

Our proposal included the complete removal of the roof and first floor and installation of a new, pre-fabricated, timber first floor. Whilst not designed to the exacting Passivhaus standards, we utilised our knowledge and followed the same principles, including upgrading ground floor insulation, external insulation to the retained ground floor walls, increased levels of insulation to the new first floor and roof, triple glazed windows throughout, high levels of air tightness and inclusion of mechanical ventilation with heat recovery (MVHR).

The benefits of off-site fabrication include factory levels of quality control and rapid installation. The first floor was craned into position, in five separate modules, over two days and was weather tight a week later.

The internal layout of the house comprises an open plan living space at ground floor with large windows taking advantage of the beautiful landscaped and secluded gardens.


The house is entered through a dramatic double height entrance hall which becomes the dining space and provides views from the front, through the house to the rear gardens.

At first floor, there are four bedrooms. The master bedroom suite, including ensuite and dressing room are reached via a dedicated bridge link which crosses the double height entrance hall and boasts a balcony overlooking the rear gardens.

The property is located within Green Belt. As part of our planning proposal package, we demonstrated the minimal impact that the proposals would have on the area and produced drawings to show how neighbours would not be detrimentally impacted.

Project Information


Potten End, Hertfordshire




Completed 2020


Concept design

Planning Application
Building Regulations

Tender Information
Contract Administration

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