| - 1840 European settlers arrive
- 1842 Hutt Road from Wellington
- 1843 Hutt-Taita Road
- 1844 First Hutt bridge
- 1845 Fort Richmond built
- 1846 Boulcott Farm incident
- 1847 Second Hutt bridge
- 1848 Severe earthquake
- 1854 Christ Church Taita
- 1855 Earthquake raises and drains Hutt lands
- 1856 Third Hutt bridge
- 1868 Flood destroys Hutt bridge
- 1872 Fourth Hutt bridge
- 1874 Hutt Railway opens
- 1877 Hutt County Council established
- 1881 First Hutt River Board formed
- 1891 Lower Hutt Borough Council established
- 1900 Gas is switched on
- 1901 - Stopbanks begun. Population 1,822.
- 1904 Fifth bridge
- 1909 Melling suspention Bridge
- 1921 Population 5,000
- 1924 Hutt Road paved in Bitumen. Electricity switched-on
- 1927 Hutt Valley Branch Railway (to Waterloo)
- 1929 Hutt Railway workshops opened. Sixth (Ewen) bridge
- 1930 Seaview Oil tanks
- 1934 First Grandstand at Hutt Recreation Ground
- 1941 Lower Hutt becomes a city
- 1944 Hutt Hospital opens
- 1950 Council led by Mayor Percy Dowse begins development
- 1953 New St James Church. Hutt Valley Rail electrification
- 1956 War Memorial Library, Little Theatre, & Plunket Rooms
- 1957 Town Hall & Administration Block. New Melling bridge
- 1959 New Horticultural Hall
- 1960 Waiwhetu Marae
- 1968 Maungaraki subdivision
- 1971 Dowse Art Gallery
- 1979 Kennedy-Good bridge
- 1986 Queensgate shopping centre
- 1987 Demolition of Riddiford Baths
- 1989 Amalgamation of Lower Hutt, Petone, Wainuiomata & Eastbourne into Lower Hutt City - ( Hutt City)
- 1996 Seventh (Ewen) Bridge
- 1999 Hutt Rec.Grandstand (rebuilt after 1998 fire)
- 1999 Cenotaph moved to Queens Drive War Memorial complex
- 2002 Laings Road Methodist Church & Hall demolished
- 2005 Westfield shopping centre redeveloped
- 2006 The New Dowse reopened
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