Jiří Lasovský studied architecture at the Academy of Art, Architecture and Design under the guidance of the architects Jan Sokol and Otto Rothmayer, and graduated in 1951. In 1953 he was employed at the Prague Project Institute until 1986. He led one of the studios of this institute from 1958 to 1969. During the 1960s, he worked on three Prague housing estate projects – Invalidovna, Pankrác and Jižní Město. Lasovský worked on the experimental Invalidovna housing development project which employed a large team of architects and urban planners (for example, Josef Polák, Vojtěch Šalda and Jiří Novotný) at the end of the 1950s and was finished (apart from the later construction of Hotel Olympik) in 1967. Thanks to its restrained size, well thought out urban planning and unique architecture it was one of the most accomplished prefabricated housing estates in the Czech Republic. In the second half of the 1960s, Jiří Lasovský together with his team also designed the Pankrác I and Pankrác II housing estates, with Lasovský himself designing the pedestrian precinct and ground floor shopping premises.
Between 1966 and 1967, a team, led by the architect Jan Krásný, won a design competition for the Jižní Město housing estate in Prague. In 1968, three architects, Jan Krásný, Jiří Lasovský and Václav Řihošek, worked out detailed plans for the layout of the estate. It was intended to be a well thought out complex, divided into five units with residential streets, pedestrian precincts, with the heights of the buildings graduating towards the core of each unit and included a genuine centre. However, at the start of the “Normalization period”, the designers were taken off the project and their original idea became mired down in the technocratic reality of mass-produced construction. The resulting Jižní Město housing estate bears almost no resemblance to the original plans.
Since the 1970s, Jiří Lasovský has concentrated mainly on smaller projects concerning individual housing – his terraced-housing units can be seen in Hřebenky in Prague or in Litomyšl, as well as his detached houses built on a slope in Prague 4. He returned to urban design with a project for the centre of the housing estate in Modřany (1985). In the 1990s, alongside his designs for detached housing, he also carried out designs for the reconstruction of historical buildings in the centre of Prague. Countebalancing his large-scale urban design projects are his designs for lighting, which can be seen for example in the Rothmayer Hall of Prague Castle.
1967
Invalidovna housing estate, Prague 8 (team leader Josef Polák, other designers: Vojtěch Šalda, Václav Havránek, Vladimír Němeček, Jiří Novotný, František Šmolík, Jan Zelený…)
1968
Pankrác I and Pankrác II housing estates, Prague (in cooperation with Jindřich Kris and Luďek Todl)
1968
Pedestrian shopping precinct, Pankrác I housing estate, Prague 4
1973
Terraced housing unit, Prague 5 (in cooperation with Ladislav Vrátník)
1985
Semi-detached houses on slope, Prague 4
1985
Urban planning of centre of Modřany housing estate, Praha 4