Building a new home in Cobbitty NSW 2570

For most of its history Cobbitty was farms and a village on Cobbitty Road. That is changing on its eastern side, where Mirvac's Cobbitty community covers about 80 hectares of zoned land beside Oran Park and Harrington Grove, and AVJennings has released Arcadian Hills. The homes going up are mostly double storey, so the stages that matter most are the ones that deal with the upper floor: frame and lock-up for the structure, waterproofing for upstairs wet areas and balconies, and fixing for window restrictors and balcony drainage.

Cobbitty is in Camden Council, about 70 kilometres south west of the Sydney CBD.

Mirvac's Cobbitty land holding is about 80 hectares, with lots settling over several financial years.

Arcadian Hills by AVJennings is a second master planned release within the suburb.

Upper floor items such as balcony supports and window restrictors feature heavily in our Cobbitty reports.

Have your plans and engineering ready before the first stage so each visit is measured against your own lot.

More about Cobbitty

Written by our local inspection team from work carried out in Cobbitty. Licensed building practitioners, NSW Fair Trading licence 366177C.

Guides for Cobbitty owners and buyers

14 January 2026 · 6 min read

A balcony roof left standing on a builder's prop

Why a temporary post under a balcony roof at lock-up is a structural item, not a tidy up job.

9 February 2026 · 5 min read

Upstairs bedroom windows that open too far

The 125mm rule for first floor bedroom windows, and why we check it at fixing stage.

4 March 2026 · 6 min read

A stud cut through, found days before plaster

Services, studs and noggings: what a Cobbitty lock-up turned up inside the walls.

Building a new home in Cobbitty NSW 2570: common questions

Which stages should a Cobbitty two storey build include?

Frame, lock-up and handover at a minimum, plus waterproofing when there is an upstairs ensuite or tiled balcony.

Is building in Cobbitty different from Oran Park?

The builders and house designs overlap, but Cobbitty lots include more sloping and rural edge land, so drainage and site preparation deserve a closer look.

How far ahead should I ring to book a Cobbitty stage?

A few days for most stages. Call as soon as the builder gives you a date for a pour or for waterproofing.