Sai Kung Hoi was a fishing harbour and fishermen still gather there. The harbour is now a typhoon shelter, where motorized junks used in the local tourist trade now are moored. They are boats that now can be hired for fishing and swimming trips.
Sai Kung town underwent significant expansion during the 1970s when the High Island Reservoir and associated water scheme required some villagers and fishermen to be rehoused in Sai Kung. This provided a core of government-funded new development, both housing and commercial, in the town centre. This was followed by the Tui Min Hoi (literally 'over the harbour') development under the government's market town programme.
Lakeside Garden (Chinese: 翠塘花園) is a public housing estate and Flat-for-Sale Scheme estate on the reclaimed land. It is the third rural public housing estate developed by Hong Kong Housing Society. It consists of 11 residential block completed in 1997. Except one block for rental use, other 10 blocks are for sale.
Sai Kung is primarily served by bus and public light buses. There is no MTR link to Sai Kung. Ferry services are available to the neighbouring islands and isolated coastal villages in the Sai Kung Hoi, as well as to the public golf course on one of the nearby islands.