Hong Kong's embattled leader Carrie Lam will focus on land and housing initiatives in her annual Policy Address on Wednesday, seeking to restore confidence in the city's future amid four months of sometimes violent anti-government protests.

Beijing-backed Lam, Hong Kong's most unpopular post-colonial leader, is under immense pressure to regain trust and quell unrest that has plunged the Asian financial centre into its biggest political crisis in decades.

Protests over a now-withdrawn extradition bill that would have allowed people to be sent to mainland China for trial in courts controlled by the Communist Party have evolved into calls for greater democracy and revived grievances over housing in one of the world's most expensive property markets.