This document summarizes a research project called COBACORE that aims to close collaboration gaps in urban disaster recovery through two innovation pathways: 1) improving community-wide collaboration building through methods and technologies to facilitate information sharing and joint work; and 2) stimulating a comprehensive needs assessment approach through systematic exploration and joint sensemaking to understand recovery environments from different perspectives. The COBACORE project will develop a collaborative workspace to support common needs assessment in humanitarian recovery operations, complementing existing approaches while enhancing accountability and participation. It will be tested in a large-scale experiment on the Dutch-German border in mid-2015.