There are a number of key statutes that govern the delivery of local authority social care and housing services including:

• The Care Act 2014
• The Mental Capacity Act 2005
• The Housing and Planning Act 2016
• Homelessness Reduction Act 2017

There are upcoming changes that are important for the adult social care sector. For example 

• Funding for supported housing - Consultation on the detail of the future funding model for supported housing from April 2019.

The government website has more information about social care policy.

CQC has a useful page which summarises relevant legislation for social care providers.