Wawrzyszew, located in Warsaw’s Mazovia region, is a strong pilot location because it represents a common housing challenge found across Warsaw: large residential estates built in the 1970s–1980s with aging technical systems and high heating demand, meaning lessons learned here can be replicated in many similar neighbourhoods. The estate is home to approximately 1,219 residents across six pilot buildings, constructed using prefabricated large-panel technology typical of the socialist era, with weak insulation, thermal bridges, outdated windows or ventilation systems, and aging heating installations. Apartments can be expensive to heat in winter and uncomfortable during summer heat waves, and for lower-income households, even moderate increases in maintenance fees or co-financing requirements can delay renovation. The highest-priority buildings are mid- to high-rise blocks from the 1970s and early 1980s, occupied by pensioners, long-term residents, single-person households, and families on moderate incomes — the buildings where renovation can deliver the biggest social and energy savings per euro invested.

Renovation in Wawrzyszew faces several persistent barriers: there are not many energy efficiency specialists who can assist housing cooperatives with their investments, funding is difficult to obtain, and residents are often reluctant to undertake renovations due to costs, disruption, or lack of trust. The estate is managed by an established housing cooperative, which makes coordinated renovation planning more practical than in fragmented ownership structures, though decisions still require agreement across many residents. Funding is available through the National Thermomodernisation and Renovation Fund, cooperative reserve funds, and preferential bank loans. Thanks to participation in the CEESEN-BENDER project, several buildings are currently being prepared for photovoltaic panel installations for common areas, and educational sessions on energy-saving methods have been held with residents.