Marc Koehler
nl / en

Superlofts Blok Y

Superlofts Block Y offered a collective of 30 homeowners a blank canvas to customise their apartments according to their own needs and engaged them to co-create the shared spaces. A unique complex – where no two apartments are alike – results from the building’s collective character, active community of residents and high level of sustainability.

Detailed description

The building combines 30 Superlofts in five main types ranging from XS lofts (70m2) to family lofts (145m2). The five-storey high base building features an open double-height framework organised into varying formats (two or three storeys, single or double facade, with a roof terrace, balcony or garden). The building composition and orientation carefully considers the individual homeowners’ needs, the urban design ambitions and the qualities of the site.

Each light-filled loft has a unique layout determined by each homeowner that is uncommon in conventional housing; many are designed with the future in mind to flexibly accommodate change e.g. for growing families, when the kids leave home or in preparation for retirement. Most interiors incorporate a void. The project was self-initiated by a cooperative housing community that played an active role in shaping the overall design and the collective amenities such as a community garden, waterside deck and lobby with a shared exhibition cabinet.

Constructed with a considered use of materials, the facade is a simple but strong expression of the concept. The slim concrete grid is filled in with a framework of double-height windows that bring light deep into the apartments. The varying external expressions of the lofts with their different entrances, balconies and window configurations result in a lively facade.

Every loft has its own parking space in a shared garage on the ground floor. The roof of the car park is landscaped with 10 private gardens, 3 private terraces and a large communal garden. The shared garden was collectively designed by the residents’ group under guidance from Marseille Buiten. Behind the building, the existing canal was widened and a shared deck was added. The spacious lobby features a shared exhibition cabinet curated by the residents.

Concept Superlofts Utrecht

– Customised lofts in a fixed framework, within a self-initiated housing collective
– Each loft is designed to fit the lifestyle of its owner and can be adapted to accommodate future change

– There are five main types: Townhouse lofts, Starters’ lofts, Two-sided lofts, Japanese lofts and Penthouse lofts.
– Sustainable inner shell, 6-9 metres high, 15 metres deep and 9 metres wide

– Floor warming and cooling using off-grid geothermal heat pumps with heat recovery
– Solar panels for shared energy needs
– C02 sensors for central ventilation with heat recovery and integrated cooling
– Passive solar design, double glazing with electric sunshading
– Separated waste
– Customisable partitions and floor systems
– Use of sustainable, low maintenance facade materials
– Social sustainability through a close-knit, active community





Veemarkt, Utrecht

Self-initiated, in collaboration with: Stichting Blok Y, the cooperative of residents and Vinkbouw


Main architect
Marc Koehler Architects

In collaboration with
Initiatiefgroep Blok Y

Project architect
Roel van der Zeeuw

Process manager
Martijn van Sluijters

Project team
Mitchel Ovens, Marc Verhoef, Dirk Overduin, Mariana Rebelo Fernandes, Marijn Luijmes