Citizen science initiatives, offer the possibility to obtain large scale monitoring data through collaboration between research centres, civil society organisations, public administrations and private owners. At the same time, these initiatives involve the public in the conservation of nature and raise awareness on the topic. The new EU proposal on nature restoration indicates to maximise the access and use of data and services from citizen science. The majority of the land included in the Natura 2000 Network is privately owned, which highlights the role of landowners in nature conservation. Alliance between citizen science and private property management could bring great benefits towards the objectives of the Biodiversity 2030 strategy of the European Union, but asks for a transparent approach and coordination.