Terrace homes at Mount Annan's newest community, Montaine Residences, have officially sold out.
The site's developers, Sunland Group have sold the final homes within the 5.5 hectare master-planned community, which is fast coming to life next to Mount Annan Marketplace.
The controversial development was approved after a lengthy court battle with the Camden Council.
There were 139 homes up for grabs.
Sunland Group managing director Sahba Abedian said he was pleased for buyers who had secured a home at Mount Annan's newest development.
"We were confident Montaine Residences would set a new standard for master-planned community living in Sydney's south-west, but more importantly we have been delighted to see the enthusiasm by our purchasers," he said.
"There is a genuine desire in this region for three and four-bedroom duplexes and terrace homes that blend thoughtful design with a central location and natural beauty.
"Many buyers have also been drawn to the fact each of Montaine Residences' homes will achieve a minimum 7-star NatHERS energy rating, which is a wonderful outcome for the environment but will deliver residents significant cost savings well into the future."
NatHERS (the Nationwide House Energy Rating Scheme) is a star rating system that estimates the energy efficiency of a home based on local climate, orientation, design, materials used and construction, with assessments showing that increasing the standard six-star energy rating to seven stars can reduce a home's energy load by 25 per cent.
Mr Abedian said the construction of Montaine Residences had also been a financial windfall for Sydney's south-west region, with $70 million of local investment injected into the area through both direct and in-direct activities, along with creating more than 400 jobs including many for local apprentices.
More than 300 people will soon call Montaine Residences home, with the first residents set to move into their homes mid-year.
Residents and councillors expressed concerns throughout the approval process for the development about traffic impacts, parking, noise and water.
Sunland Group beat Camden Council in a lengthy court battle last year to have the development approved.
The 1-5 Main St, Mount Annan: Fairer Outcomes For All Facebook group has been campaigning against "over-development" of the site since 2014.
A spokeswoman took to the page to voice the group's disappointment with the court's decision last year.
"We all knew something would eventually get built on this site at some point, and after five years of hard effort by the community and council, we would have hoped it'd be something aligned to what sits around this key central part of our town," the post read.
"Best of luck to those fellow residents who live in and around the block, and to the rest of us who must pass by/park/shop next to it every day."
The final homes are expected to be completed in late 2022.