In Sweden the residential and commercial sector is a major user of energy, why the Swedish government has set a specific goal to half the energy usage in buildings by 2050, compared to 1995. The Swedish Energy Agency has therefore started the campaign “Halvera Mera” to encourage demonstration projects that will show how to renovate in an energy efficient way, and in doing so prove that it is possible to reduce a building’s energy usage by half and still make a profit. These projects are intended to serve as good examples and give inspiration to residential owners to perform energy efficient renovations. To make sure that these projects serve their purpose, it is important to know what will inspire and what will impede a residential owner to invest in energy efficiency improvements. This study is focused on determining which aspects influence the residential owners in their decision-making and whether the property ownership form has any impact on the energy efficiency work. By performing a survey within the project “Halvera Mera”, completed with a number of interviews, the aspects that influence residential owners’ decisions could be identified. The financial resources for, and the motive for investing in, energy efficiency improvements differ between the different forms of ownership. Conclusions could therefore be drawn that the form of the ownership has some impact on the working process and outcome. However, the decision making is also influenced by other aspects, such as local housing market and the property owners’ ambition with their business.