However, this landscape has been rapidly changing due to urban sprawl, especially in the southern part of Tarneit, including from nearby suburbs such as Hoppers Crossing, Truganina, Wyndham Vale and Werribee.

Tarneit has a few schools established within its boundaries, including:

• Thomas Carr College,
• Baden Powell College P-9,
• Tarneit P-9 College,
• St Francis of Assisi Tarneit,
• The Islamic College of Melbourne (ICOM),
• Good News Lutheran College (GNLC).
• Tarneit Rise Primary School

The Tarneit area is now the site of several new housing estates, including Marigold, The Grove, Newgate, Habitat on Davis Creek Estate, Seasons Estate, The Heartlands, The Reflections Estate, Moorookyle, Tarneit Gardens, Rothwell, Ecoville, The Rise, Manhattan Place, Claremont Park, The Reserve, Rothwell Villages (NOW CREEK STONE), Riverdale Village, Westbrook, Haven, New Haven and Rose Grange. Mooted estates include Evadene, located within the Claremont Park estate.

As part of the Regional Rail Link many roads were upgraded in Tarneit. Bridges were built over the railway line at Leakes Road, Davis Road, Tarneit Road, and near Tarneit railway station itself at Derrimut Road. Doing this will enable a link between the existing estates and new housing developments on the other side of the railway line in the least populated locations such as Leakes Road and Davis Road and provided a grade separation for the commuters who already used roads such as Tarneit Road and Derrimut Road.