Dundas Valley is located 21 kilometres north-west of the Sydney central business district in the local government area of the City of Parramatta.

The city of Parramatta has erected signs in the suburb documenting the initial land grants in the area.

One subsequent grant was the 30 acre Lot 108 to John Love, a member of the NSW Corps, on 20 February 1794.

Cox's holdings spread from Brush Farm into Dundas Valley where he grazed sheep and cattle and grew corn and wheat.

Gregory Blaxland purchased Brush Farm in 1806.Lieutenant William Cox would refer the south eastern corner near Brush farm now bordering Deninstone West and Eastwood as Dundas Heights; Lieutenant William Cox would survey his land from the vantage point of Dundas Heights.

[9] Due to the geological significance of the area, it was visited by a number of famous scientists, including Charles Darwin and Douglas Mawson.

Sir Thomas Mitchell Reserve and Curtis Oval host local club football (soccer), rugby union and cricket matches.

Dundas Park covers 6.5 hectares and also boasts two playgrounds, picnic & BBQ facilities and a Boy Scout and Girl Guides Hall.