Street-level perspectives have been integral in understanding the implementation complexities and influential organisational practices of welfare reforms. In the case of the National Disability Insurance Scheme (NDIS), these perspectives provide an opportunity to scrutinise the politics and practices of reasonable and necessary supports, in an ambitious and complex reform environment. Relying on the aspiration of choice and control to set the direction, the NDIS delegates responsibility to street-level organisations and personnel, participants and families to work out funded supports at major service interfaces. Drawing on seminal developments in street-level perspectives, this paper proposes an analytical framework for understanding the organisational mechanisms and discretions of this policy work and responding practices of disability support governance. Significantly, it conceptualises NDIS participants as co-opted policy actors who challenge the assumptions of reform politics and street-level work. In that respect, the paper brings a new street-level perspective on a national dilemma of working out reasonable and necessary supports. First, the seminal aspects of street-level bureaucracy and developments of contemporary street-level perspectives are overviewed as background to the proposed framework. These are then discussed in relation to the NDIS and how a street-level perspective might facilitate an understanding of the effects of governance provisions on organisational practices and discretion. Developing street-level perspectives to account for devolved disability governance in a choice and control environment will facilitate better understanding of governance failures and successes.