NL architects: a proposal to save the kleiburg in amsterdam

first image
'kleiburg' proposal by NL architects, amsterdam, the netherlands
all images courtesy of NL architects

one of the biggest apartment blocks in the netherlands, the modernist 'kleiburg' in the bijlmermeer district of amsterdam was constructed during the 1960s
by then city planner, siegfried nassuth. the bending footprint stretches 400 meters in length and spans 11 storeys in height, accommodates 500 units in this
building alone. once part of a grander scheme to produce a vertical garden city, this structure remains after failed revitalization attempts during the 1990s.
currently joined by the bijlmer museum and elevated subway lines, the project would require over 70 million euro to be renovated to today's standards. 
leading to an inevitable demolition, a unique solution was needed to avoid this fate. the owner, housing corporation rochdale, offered an alternative for activists.
in an effort to save dutch architect ottenhof's masterpiece, it would be offered for only one euro to catalyze an economically feasible plan.

approximately 50 parties responded with ideas for student housing or shelters for the homeless. this proposal by local firm NL architects suggests to renovate
the elevators, galleries and installations but to leave the units as bare shells without furnishings, rooms or heating and allow for retrofitting by future owners.
the move reduces the cost of initial investments, introducing a new business model into the country. residents will be happily enticed by a low price and
the freedom to personalize to their own desires. adjacent as well as stacked dwellings may be joined, marking opportunities to break down the repetitive elevations.
opening to the outside environment, a catalogue of facade modules with sliding doors, double doors and windows are set back to create patios for plants
and dining areas to activate the once uniform exterior. wood elements add a tactile touch to the original, minimal hardware.

trees define parking scheme

multi-storey parking garages have been demolished, lowering the plane of roads. taking space away from valuable green parkland,
ground level parking complies with new zoning laws and budget limitations. to protect the trees, they became defining elements,
forcing roadways to bend around their plots, creating gently curving lanes. 

curved parking roads

tactile timber-clad exterior

alternative outcome after residents move in

owners personalize their unit

aerial view of the building

concrete model

model detail

exterior after renovation

alternative views

parking scheme

parking plan / after - 500 spaces

parking plan / before - 422 spaces

facade options

elevation before and after

project info:

project name: kleiburg de flat - residential revamp of a modern monument, amsterdam zuidoost 2012 – 2013
client: consortium de flat - kondorwessels vastgoed, hendriks cpo, vireo vastgoed, hollands licht / martijn blom
architect: NL architects - pieter bannnenberg, walter van dijk, kamiel klaasse rappange & partners architecten bv
team: guus peters with iwan hameleers, giulia pastore and fouad addou, matthew davis, paul ducom, soo kyung chun, adrian mans,
paulo dos sousa, carmen valtierra de luis
structure: van rossum raadgevende ingenieurs amsterdam bv
building physics: schreuder groep
installations: homij technische installaties bv, amsterdam
contractor: kondorwessels amsterdam bv
size: gross floor area 65.600m², net floor area 59.400m²