Although a large number of ecodesign tools is available to designers, adoption of these tools still seems limited. This is in part due to an inadequacy between ecodesign tools and designer's expectations. To develop relevant tools, more attention must be paid to designers' needs and usages. In order to do this, a methodology adapted from innovation management is applied to the specific case of building ecodesign. To apply this methodology, data is gathered from interviews and case studies. Three dimensions are mapped with the DSM Value Bucket tool: problems encountered by designers, usage situations and existing solutions. As a result, value buckets are identified as major issues happening in important usage situations where current solutions offer little help. These value buckets are opportunities for new ecodesign tool development for the construction sector. Results obtained are compared to those of previous studies and give original insights on needs of building designers concerning ecodesign tools.