UNDP invites qualified service providers to submit proposals for supporting the design and development of the “Rehabilitation as a Service” (RaaS) project for the Barcelona City Council, Spain. This initiative is part of the citys candidacy for the 2025 Mayors Challenge and aims to address critical housing rehabilitation needs through innovative financing, participatory planning, and technological integration. The selected provider will assist in planning, stakeholder engagement, solution ideation, and preparation of the final proposal, ensuring alignment with the strategic goals of the Challenge and the Sustainable Development Goals (SDGs).Please note that bidders must be national Spanish and registered as such.Please indicate whether you intend to submit a bid by creating a draft response without submitting directly in the system. This will enable the system to send notifications in case of amendments of the tender requirements. Should you require further clarifications, kindly communicate using the messaging functionality in the system. Offers must be submitted directly in the system following this link: http://supplier.quantum.partneragencies.org  using the profile you may have in the portal. In case you have never registered before, you can register a profile using the registration link shared via the procurement notice and following the instructions in guides available in UNDP website: https://www.undp.org/procurement/business/resources-for-bidders.  Do not create a new profile if you already have one. Use the forgotten password feature in case you do not remember the password or the username from previous registration.Search for the specific tender using search filters and subscribe to the tender in order to get notifications in case of amendments of the tender document. If you need support with the online system, you can contact the contact details of this tender as indicated in the solicitation document.CENTRAL PROCUREMENT TEAMUNDP HEADQUARTERS