Complete renovation of a 1960's bungalow

Positive Space - RS55 rear elevation

RS55

A completely renovated and sustainable home where the interior and exterior blend seamlessly together.



Program

Client

Location

Year

Status

Area

Photography

Residential

Exclusive

Oostzaan

2025

Completed

235m²

Wouter van der Sar

Positive Space - RS55 façade enclosed
Positive Space - RS55 extension in detail

The client was already residing in the vicinity when his interest was piqued by this semi-detached bungalow, distinguishable by its all-around versatility and distinctive roof shape. What truly makes this house special is its unique positioning and orientation towards the Twiske: a stunning nature reserve on the outskirts of Amsterdam.

Our task was to transform this incoherent bungalow into a spacious, energy-efficient, and future-proof family home.

Analysis and Concept

We began with a comprehensive analysis of the location, orientation, and possibilities for extension without planning permission. Based on this, we developed a layout plan where the main living areas, the living room, and open-plan kitchen are situated on the ground floor, oriented towards the garden and natural views. For this close-knit family, this means they can fully immerse themselves in the remarkable surroundings.

The master bedroom with an en-suite bathroom is also located on the ground floor. On the first floor, three children's rooms, a bathroom, and a laundry area have been established.

RS55

A completely renovated and sustainable home where the interior and exterior blend seamlessly together.



Program

Client

Location

Year

Status

Area

Photography

Residential

Exclusive

Oostzaan

2025

Completed

235m²

Wouter van der Sar

Positive Space - RS55 façade enclosed
Positive Space - RS55 extension in detail

The client was already residing in the vicinity when his interest was piqued by this semi-detached bungalow, distinguishable by its all-around versatility and distinctive roof shape. What truly makes this house special is its unique positioning and orientation towards the Twiske: a stunning nature reserve on the outskirts of Amsterdam.

Our task was to transform this incoherent bungalow into a spacious, energy-efficient, and future-proof family home.

Analysis and Concept

We began with a comprehensive analysis of the location, orientation, and possibilities for extension without planning permission. Based on this, we developed a layout plan where the main living areas, the living room, and open-plan kitchen are situated on the ground floor, oriented towards the garden and natural views. For this close-knit family, this means they can fully immerse themselves in the remarkable surroundings.

The master bedroom with an en-suite bathroom is also located on the ground floor. On the first floor, three children's rooms, a bathroom, and a laundry area have been established.

RS55

A completely renovated and sustainable home where the interior and exterior blend seamlessly together.



Program

Client

Location

Year

Status

Area

Photography

Residential

Exclusive

Oostzaan

2025

Completed

235m²

Wouter van der Sar

Positive Space - RS55 façade enclosed
Positive Space - RS55 extension in detail

The client was already residing in the vicinity when his interest was piqued by this semi-detached bungalow, distinguishable by its all-around versatility and distinctive roof shape. What truly makes this house special is its unique positioning and orientation towards the Twiske: a stunning nature reserve on the outskirts of Amsterdam.

Our task was to transform this incoherent bungalow into a spacious, energy-efficient, and future-proof family home.

Analysis and Concept

We began with a comprehensive analysis of the location, orientation, and possibilities for extension without planning permission. Based on this, we developed a layout plan where the main living areas, the living room, and open-plan kitchen are situated on the ground floor, oriented towards the garden and natural views. For this close-knit family, this means they can fully immerse themselves in the remarkable surroundings.

The master bedroom with an en-suite bathroom is also located on the ground floor. On the first floor, three children's rooms, a bathroom, and a laundry area have been established.

Positive Space, herenhuis - studie staand

Facade, Materiality, and Sustainability

The facade of the extension consists of vertical, thermally modified wood panels that are neatly framed between the floor and ceiling. These wooden accents echo through the existing part of the house, forming the new front door and garage door, creating a harmonious blend of old and new.

On the ground floor, the existing masonry has been completely stripped of old paint layers, and inside, the facade along with the structural floor has been fully re-insulated. This allows the house to be efficiently heated with a heat pump.

The multi-sided roof boasts four identical, maximized dormers. This addition creates ample space for three spacious bedrooms, a bathroom, a separate toilet, and a laundry room on the upper floor. The roof is completely re-insulated on the inside and finished on the outside with new slate tiles.

New Entrance and Master Suite

In addition to the living space, the entire entrance zone has also been redesigned. Upon entering, a new staircase leads efficiently to the first floor. The staircase partially disappears behind a new wardrobe and spacious guest toilet and is visually interrupted by a custom steel partition leading to the living area.

Opposite lies the master bedroom, equipped with a spacious custom wardrobe and en-suite bathroom. A soft materials palette has been chosen here, with beige floors and matching wall tiles. The bespoke features, along with the Xinnix doors, are made of oak, emphasizing warmth and tactility. The kitchen island is finished in soft yellow spray-painted MDF, and the white oak baseboards are recessed to make the wall lines more pronounced. The steel columns in the living room are coated in a shade that matches the anodized aluminum frames.

Positive Space, herenhuis - studie detail 1
Positive Space, herenhuis - studie detail 1
Positive Space, herenhuis - studie detail 2
Positive Space, herenhuis - studie detail 2

The blur between interior and exterior

Living Space by the Water

The new extension at the rear forms the heart of the home. Here, the living room and the kitchen blend together, offering direct views of the Ringvaart and Twiske. The design emphasizes a maximal sense of space, light, and connection with the changing seasons.

To ensure a seamless transition between indoors and outdoors, the extension is designed as a panoramic space: the window frames turn around the corner and are fully integrated into the floor and ceiling thanks to the minimalist Tudor facade. The ceramic tile flooring continues in pattern and height to the outside. Outdoors, this is achieved with tile supports, allowing for careful drainage.

The ceiling extends into an outdoor canopy, inspired by the original design of the bungalow. The canopy is sleekly designed with sprayed aluminum paneling. Inside, the sheer curtains are subtly integrated into the ceiling, enhancing the sense of spaciousness. The kitchen and seating area are carefully positioned to make the connection with the outdoors palpable at every point.

Upon finalization
Prior to the architectural transformation

The blur between interior and exterior

Living Space by the Water

The new extension at the rear forms the heart of the home. Here, the living room and the kitchen blend together, offering direct views of the Ringvaart and Twiske. The design emphasizes a maximal sense of space, light, and connection with the changing seasons.

To ensure a seamless transition between indoors and outdoors, the extension is designed as a panoramic space: the window frames turn around the corner and are fully integrated into the floor and ceiling thanks to the minimalist Tudor facade. The ceramic tile flooring continues in pattern and height to the outside. Outdoors, this is achieved with tile supports, allowing for careful drainage.

The ceiling extends into an outdoor canopy, inspired by the original design of the bungalow. The canopy is sleekly designed with sprayed aluminum paneling. Inside, the sheer curtains are subtly integrated into the ceiling, enhancing the sense of spaciousness. The kitchen and seating area are carefully positioned to make the connection with the outdoors palpable at every point.

Upon finalization
Prior to the architectural transformation

The blur between interior and exterior

Living Space by the Water

The new extension at the rear forms the heart of the home. Here, the living room and the kitchen blend together, offering direct views of the Ringvaart and Twiske. The design emphasizes a maximal sense of space, light, and connection with the changing seasons.

To ensure a seamless transition between indoors and outdoors, the extension is designed as a panoramic space: the window frames turn around the corner and are fully integrated into the floor and ceiling thanks to the minimalist Tudor facade. The ceramic tile flooring continues in pattern and height to the outside. Outdoors, this is achieved with tile supports, allowing for careful drainage.

The ceiling extends into an outdoor canopy, inspired by the original design of the bungalow. The canopy is sleekly designed with sprayed aluminum paneling. Inside, the sheer curtains are subtly integrated into the ceiling, enhancing the sense of spaciousness. The kitchen and seating area are carefully positioned to make the connection with the outdoors palpable at every point.

Upon finalization
Prior to the architectural transformation
Positive Space, herenhuis - walk in closet powder table
Positive Space, herenhuis - walk in closet powder table
Positive Space, herenhuis - walk in closet powder table
Positive Space, herenhuis - walk in closet mirror
Positive Space, herenhuis - walk in closet mirror
Positive Space, herenhuis - walk in closet mirror
Positive Space, herenhuis - maatwerk badkamer 1
Positive Space, herenhuis - maatwerk badkamer 1
Positive Space, herenhuis - maatwerk badkamer 1
Positive Space, herenhuis - maatwerk badkamer 2
Positive Space, herenhuis - maatwerk badkamer 2
Positive Space, herenhuis - maatwerk badkamer 2
Positive Space, herenhuis - waskamer staand
Positive Space, herenhuis - waskamer staand
Positive Space, herenhuis - waskamer staand
Positive Space, herenhuis - waskamer staand 2
Positive Space, herenhuis - waskamer staand 2
Positive Space, herenhuis - waskamer staand 2