Responsibility for planning the provision of housing for those with serious disabilities lies with local housing authorities who are responsible for assessing housing needs within their areas and devising strategies to address them. If an authority identifies the need for more specially appointed social housing for people with disabilities it may decide to modify council houses or to work with Housing Associations on modification or new development. Local housing authorities also have a mandatory duty to fund adaptations to council housing for eligible disabled tenants under the disabled facilities grant legislation contained in the Housing Grants Construction and Regeneration Act 1996.