PossibilitytotransformahousingcomplexoftheWładysławaŁokietkaEstateinWolbrom 61
potential in the architecture of post-war housing estates
built in prefabricated technology. In their designs, they
plan the further life of the existing building, minimizing
the nuisance occurring during construction works. They
adopt the principle of adding a new space to the apartments,
which can be freely programmed by the residents [10].
One of the most famous projects by Lacaton & Vassal
is the renovation of the Grand Parc estate in the north of
Bordeaux (completed in 2017), developed together with
Frédérik Druot and Christoph Hutin. Initially, the existing
complex was to be demolished. The quality of housing, en-
ergy management issues, positive social impact and lower
construction costs spoke in favor of modernization. As part
of this project, 530 apartments were modernized and 8 new
ones were built in buildings with 11 and 16 oors. Self-sup-
porting precast concrete structures were built along the
main façades, extending each level by 3.8 m (2.8 m win-
ter garden and 1 m balcony). The existing windows were
transformed into a sliding porte-fênetre, thanks to which
the existing façade of the building became an internal wall.
Unheated conservatories were closed with sliding polycar-
bonate and glass “curtains”. Additional space was enlarged
with balconies. New elements of the building make it pos-
sible to live outside “home”. As part of the investment,
bath rooms, toilets and installations were also modernized,
halls were rebuilt and new elevators were added. Moreover,
the space between the buildings was restored [18].
Another contemporary example of positive interven-
tion in an existing housing estate is the revitalization of
a section of the Génicart neighborhood in Lormont, which
was designed by LAN Architecture and completed in
2015. The site covers 10% of the Lormont municipality
and is the largest estate on the right bank of the Gironde. It
consists mainly of social housing, is inhabited by around
10,500 people and 50% of the city’s population. The proj-
ect involved the revitalization of six ve-story residen-
tial buildings and three 19-story “Saint Hilaire Towers”
residential towers and their surroundings. As part of the
investment, the area at the foot of the facilities was trans-
formed into a city park, limiting vehicle trac. The car
parks are concentrated on the outskirts of the estate, and
a network of landmarks and meeting places has been estab-
lished between the individual estates. New retaining walls
and playgrounds were designed, and the area was diversi-
ed. Until now, space treated as nobody’s was dened as
public and private. The central point of the estate are three
residential towers, in which the space of individual apart-
ments has been enlarged. The elevations were designed,
thanks to which the depth of the loggia was increased from
93 cm to 160 cm. They are an extension of the interior
of the apartment. Lower buildings were also modernized,
giving residents the opportunity to generate more space
from the existing loggias. In the very center of the estate,
a new sculptural playground has been designed, which is
a space for interaction between young residents [19].
Reconstruction of large-panel housing estates was also
carried out on a large scale in Germany. As part of the
modernization activities, large housing estates in Berlin
were rebuilt, among others Grupiusstadt, Markisches Vier-
t el
and Thermometersiedlung [9].
Major changes were introduced in the 1
st
decade of
the 21
st
century in the housing estate in Leinefelde. The
modernization concept was developed in the studio of
the German architect Stefan Forster. A total of seven res-
idential buildings were rebuilt there. Some of them were
lowered, new windows were introduced and their colors
were changed to more vivid ones. Thermal and acoustic
parameters of partitions were also improved. The great-
est interference concerned the building at Stadtvillen 7–8.
Originally it was 180 m long. As part of the reconstruc-
tion, a part of the block was demolished, creating eight
smaller, independent point objects, whose proportions
better corresponded to the human scale. There are gar-
dens for residents next to the building, which enlarged
the private zone. Stefan Forster also revitalized the estate
in Halle-Neustadt. In the ve-story building modernized
in 2010, a part of the top oor was demolished, leaving
an apartment in every second staircase. In the spaces ob-
tained after the demolition, terraces with gardens were
built. Large balconies were added and the colors of the
elevation were revived [20], [21].
A tool for analyzing local plans in terms of
possible transformations
Despite numerous experiences from Western Europe,
modernization activities in housing estates in Poland are
undertaken on a small scale. For potential transformations
of prefabricated housing estates, it is worth analyzing the
possibilities and limitations generated by the local plan.
As part of the research, a tool in the form of a table was
developed to facilitate the analysis of records (Table 1). At
the beginning, due to the possible application to various
local plans, it was necessary to develop universal nomen-
clature of parameters and indicators.
Three plans have been selected for cities of a similar
size with industrialized housing estates and have not yet
undergone signicant transformations. The changes so far
have been limited to the thermal modernization and reno-
vation of individual buildings. The nomenclature of in-
dividual parameters and indicators was analyzed in the
resolutions of various communes. For example, in the
MiejscowyPlanZagospodarowaniaPrzestrzennegoWol-
bromia [Local Spatial Development Plan for Wolbrom],
issues related to the built-up area are governed by the
provision “the size of the permissible building area” [22].
In the document prepared for Miechów, this provision is
“the maximum building area” [23]. The meaning of the
above provisions was found to be the same. In the devel-
oped table, the entry “building area” was used, and only
in the data resulting from the plan, the prex “max” was
used. The only exception was the MiejscowyPlanZagos
podarowania Przestrzennego Osiedli Południowych Ol
kusza [Local Spatial Development Plan for the South
Ol kusz Housing Estates], where there was a provision
regarding the “plot area investment index” [24]. There-
fore, it was concluded that both names should appear in
the analysis. However, if a given indicator or parameter
was not present in the plan, “not applicable” should be
entered in the table.