A/HRC/25/54 persons should possess a degree of security of tenure that guarantees legal protection against forced eviction, harassment and other threats. The plight of the urban poor presents one of the most pressing challenges to security of tenure, especially in an increasingly urbanized world. These principles aim to provide guidance to States and other actors to address this challenge in order to ensure adequate housing for poor and vulnerable people in urban and peri-urban areas. Underlying these guiding principles is a presumption that individuals and communities occupying land or property to fulfil their right to adequate housing, and who have no other adequate option, have legitimate tenure rights that should be secured and protected. The concept of legitimate tenure rights extends beyond mainstream notions of private ownership and includes multiple tenure forms deriving from a variety of tenure systems. 1. Strengthening diverse tenure forms States should promote, protect and strengthen a variety of tenure forms, including those deriving from statutory, customary, religious and hybrid tenure systems. All relevant laws, policies and programmes should be developed on the basis of human rights impact assessments, which identify and prioritize the tenure arrangements of the most vulnerable and marginalized. The following types of tenure, among others, should be promoted, strengthened and protected, as appropriate in the given context: 2. (a) Possession rights; (b) Use rights; (c) Rental; (d) Freehold; and (e) Collective arrangements. Improving security of tenure In order to improve security of tenure, especially for vulnerable and marginalized persons and groups living in urban poor settlements, States, including relevant authorities, should take the following measures: (a) (b) homeless; Conduct citywide assessments of tenure arrangements; Identify insecure settlements and population groups, including the (c) Develop citywide strategies for securing tenure and upgrading settlements on different categories of land and with different tenure arrangements; (d) settlements; Review and reform urban plans and regulations in order to integrate (e) Adopt and implement a human rights-compliant resettlement policy to be applied where in situ solutions are not possible; (f) Facilitate participatory settlement mapping, enumerations and tenure registration; (g) Establish fair and effective land dispute resolution mechanisms; (h) Allocate sufficient funds to ministries, municipalities and local governments for the implementation of these measures; and 4