[3] The suburb is home to five National Heritage Listed sites: Three residences, St Thomas' Anglican Church and the Sackville Cemetery, which dates back to 1828.

Governor Arthur Phillip, travelling along the Hawkesbury River by boat, first encountered Indigenous people at present day Sackville in July 1789.

In 1829 a word list or ‘Native names of places on the Hawkesbury’ was compiled by the Presbyterian Reverend, John McGarvie.

[5] The railway from Sydney to Windsor opened in 1864, which meant that farm produce could be shipped upriver for onward transportation by train.

[11] The Lady Hawkesbury was a passenger liner that was responsible for not only severing the cables of the Sackville Ferry but "pulling out the mooring posts as well.

To the East is Tizzana road which follows the river to the historical site of St Thomas Church, and then beyond to the suburb of Ebenezer.

St. Thomas Cemetery sits at the Northern tip of Sackville, at the point where Tizzana road bends.

It is mentioned in 1905, the author writes that the Methodist church in Sackville North "disappeared bodily, like its Anglican neighbour across the river whose harmonium ultimately 'went ashore' on the beach at Manly".

[18] St Thomas' is an example of a Victorian Gothic church with steeply pitched roof, belfry and pointed arched openings.

[19][20] Lilburndale is located at 413 West Portland Road and marks the upper reaches of the suburb of Sackville.

The house is not as old as Mr James Holmes 1885 residence, located on the hill opposite the end of Tizzana road and near Churchill's Wharf.

The house represents a "very good example of a substantial Inter-war bungalow featuring contrasting brick and render work, broad gables and leadlight windows.