text project list
description high end housing development
category residential, hospitality
location Treffen, Austria
built area 1.850 m²
design team

Stephan Buerger, Demetra Katsota, Flavian Lekkas, Daphne Minza, Francisco Serodio, Mladen Stamenic


Oberressl & Kantz ZT-GmbH


Glessner Group

client private
design year 2012
completion year 2020

The apartment development is situated in Annenheim, on the foothills of the Gerlitzen mountain in Carinthia. The steep south-facing elongated site offers spectacular views towards the Lake Ossiach and the Landskron Castle beyond.

The scheme is broken down into three cubical volumes, set slightly at an angle to each other creating a choreographic movement, allowing the existing green topography to continue in-between. The three cubes relate to the scale of the surrounding structures -mostly private homes and barns- while their in-between spaces frame and reveal views to and from the site.

The ground floor is revealed as a ‘tilted, open’ plane, a single continuous green roof below which the car parking and auxiliary facilities are placed. Above this base one three-floor and two four-floor volumes emerge. Three separate entrances allow access to the vertical core connecting each cube while the visitors’ access to each block is from the rear side at the top.

The vertical circulation is thus placed in the rear of each structure allowing the living spaces and bedrooms to be organized in the south facing front exploiting the spectacular views and maximum natural light. With the exception of the two, duplex ground floor apartments, the apartments cover an entire floor of each cube.

The three cubes are clad in sliding and open-able timber larch panels delineating an outdoor space and providing privacy and sun protection. The generous south facing balconies are designed as extensions to the living indoors for the warm summer months and as in-between climatic buffer zones for the cold winter months.

The low energy concept is achieved with the application of high performance energy glazing systems, adequate thermal insulation, the selective use of consciously sourced materials and bioclimatic principals such as self-shading and cross ventilation, guaranteeing that the development will meet the highest building performance and energy standards despite the extensive glazed surfaces.

Title Year Type Locaction Country
PENINSULA 2020 residential, hospitality Paros Greece
VILLAS A 2019 residential, hospitality Costa Navarino ,  Messinia Greece
RESTAURANT THALERSEE 2020 public, hospitality Graz Austria
VILLAS B 2019 residential, hospitality Costa Navarino ,  Messinia Greece
OKZT HUB 2018 offices Klagenfurt Austria
MAYRHOFEN STATION 2018 public Mayrhofen Austria
HOUSES A·2 2014 residential, hospitality Paros Greece
FERANT GARDEN APARTMENT 2017 residential Ljubljana Slovenia
CING LABORATORY BUILDING 2018 public Nicosia Cyprus
STUDENT STUDIOS PATRAS 2007 residential Patras Greece
PX SIX THRESHOLDS 2012 public Athens Greece
HOUSE E 2016 residential Artemida Greece
HOUSE L 2016 residential, research Antiparos Greece
LANDHOTEL SILVESTAR 2016 commercial, residential, hospitality Motovun Croatia
AS IF 2014 residential, research Mykonos Greece
HOUSE B 2014 residential Crete Greece
UNIVERSITY LIBRARY GRAZ 2015 public Graz Austria
HOUSE T 2016 residential Antiparos Greece
HOUSE H 2012 residential Corfu Greece
KURA CULTURAL CENTRE 2013 public Mingachevir Azerbaijan
THREE SPACES 2013 exhibition Athens Greece
KUBAN RIVERSIDE HOTEL 2013 commercial, hospitality Krasnodar Russia
STUDENT STUDIOS THESSALONIKI 2017 residential Thessaloniki Greece
HOUSE A+B 2008 residential Paros Greece
COOP BANK HEADQUARTERS 2012 commercial Nicosia Cyprus
PX THREE CORNERS 2012 public Athens Greece
AUSTRIAN AMBASSADOR RESIDENCE 2013 residential Athens Greece
COASTAL DOMAINS 2017 exhibition Athens Greece
ANNENHEIM CUBES 2012 residential, hospitality Treffen Austria
FERLACH TECHNICAL SCHOOL 2016 public Ferlach Austria
CASPIAN SEA RESORT 2012 public, residential, masterplan, hospitality Baku Azerbaijan
6 VOIDS: PXATHENS 2012 exhibition Venice Italy
BELGIAN EMBASSY 2009 public Athens Greece
CAUCASUS CONFERENCE CENTRE 2012 public Qabala Azerbaijan
GERMAN SCHOOL ATHENS 2017 public Athens Greece
LAKE APARTMENTS 2012 residential Bodensdorf Austria
PX ATHENS 2012 public, masterplan Athens Greece
LARNACA AGORA 2011 public Larnaca Cyprus
NOVARA ELEMENTARY SCHOOL 2018 public Vienna Austria
OFFICE A 2010 commercial Athens Greece
HBWBC SCHOOL 2010 public Vienna Austria
DASOUPOLI HIGH SCHOOL 2010 public Nicosia Cyprus
RATHAUSPARK 2009 public Vienna Austria
TOWNHOUSE K 2009 residential Nafplion Greece
VILLA W1 2008 residential Corfu Greece
HELLENIC PARLIAMENT 2008 research Athens Greece
KYRIAZI DEVELOPMENT 2008 commercial, residential Athens Greece
GERMAN DEVELOPMENT 2008 masterplan Sofia Bulgaria
SUPERSTORE V 2008 commercial Athens Greece
MELINA PAVILION 2007 exhibition Athens Greece
GLEISDORF DEVELOPMENT 2007 residential Gleisdorf Austria
HELEXPO PAVILION 2007 exhibition Thessaloniki Greece
VILLA S 2006 residential Vienna Austria
VERTICAL ATTICA 2006 masterplan, research Attica Greece
SCHLOSSMUSEUM 2006 public Linz Austria
EXHIBITION 102x 2006 exhibition Athens Greece
HOUSE M 2004 residential Athens Greece
SKYWALK BRIDGE 2004 public Vienna Austria
HELLENIKON PARK 2004 masterplan Athens Greece
DARNITSA DEVELOPMENT 2003 commercial Kiev Ukraine
TRANSITIONAL INTERSTICES 2003 residential Ano Liosia Greece