MW architectuur was asked to extend an existing house in Hillegom in the Netherlands with a special roof structure. The extra space was to serve as a master-bedroom with an open bathroom.

Project: Roof extension, Hillegom, The Netherlands
Studio Name: MW architectuur
Design Team: Machiel Wagenaar
Area: South Holland
Year: 2012
Location: Hillegom, the Netherlands
Consultants: construction engineer Faas & van Iterson
Photography Credits: William Ista – Ista fotografie
Other Credits: SK Bouw
Client: Private

Roof extension, Hillegom, the Netherlands by MW architectuur - Sheet5
©William Ista – Ista fotografie

MW architectuur proposed to keep the roof structure separate from the existing roof by creating a shadow strip and to keep it separate from the facades by creating a glass partition. The superstructure itself has a kinked roofline. In this way, it creates space on one side, but on the other side, it also limits the size of the superstructure at the rear to allow enough sunlight into the back garden.

The structure with the buckled roofline also defines the interior from the inside; the wooden roof beams are also buckled, thus forming within the structure.

Roof extension, Hillegom, the Netherlands by MW architectuur - Sheet6
©William Ista – Ista fotografie

From the roof superstructure, special views through the existing window into the rest of the house and all around to the surroundings.

The roof structure is clad in Plato wood, a preserved pine wood that is sustainably sourced. The shell of the roof structure is built of timber frame. This construction resulted in a CO2- negative structure.

Roof extension, Hillegom, the Netherlands by MW architectuur - Sheet7
©William Ista – Ista fotografie

abstract about your practice:

MW architectuur was founded in 2006 by Machiel Wagenaar. Since 2006 MW architectuur has designed and successfully completed a large number of projects. The focus is on projects for private clients and small entrepreneurs.

Whether it concerns new projects or renovations or improvements: knowledge, experience, drive but especially personal contact with the client form the basis for that success.

Transforming your wishes, dreams and ideas into a practical plan that is more than the sum of the individual components; that is what MW architecture is all about.

Surprising solutions that offer new possibilities and preferably make more possible than you think.

MW architectuur always examines a wide range of possibilities to find the ideal solution. The client is involved as much as possible. MW architectuur advises, the client makes the final choice.

Clear communication and the best possible mapping of the process are paramount.


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