More than 140 Berkeley residents have signed a petition against plans for a $25 million retirement village, and opponents are investigating a legal challenge to the development.The Macedonian Orthodox Community of Wollongong proposes to build a 158-unit retirement village on a 19ha site fronting Hooka Creek Rd.The master plan for Macedonia Park - home to Wollongong United FC - includes 86 retirement villas and 72 units in four, three-storey apartment buildings.A new community centre, playing field, clubhouse and car park are also planned.Community campaigner Vicky Curran said she was seeking legal advice and had asked for more time to lodge a submission opposing the development.Only six objections were lodged with the council by the closing date last week, but 148 people have signed the petition.Their concerns include traffic, flooding issues and the protection of ecological communities on the site. The development application identifies two endangered plant communities: a swamp oak forest and coastal saltmarsh.Ms Curran said many residents and sporting groups which used nearby Fred Finch Park were not formally notified by the council about the development.But a council spokeswoman said letters were sent to more than 300 residents.Neighbourhood Forum 7 convenor Greg Hesse said the development was raised at the August meeting but the forum did not have enough time to absorb the complex proposal."There should have been extensive community consultation and meetings for something this big," he said.Macedonian Orthodox Community of Wollongong president Mile Tasevski told the Mercury in August there was "massive support" for the plan. The development proposal will be referred to the Joint Regional Planning Panel. If it is approved, the residents' group will seek Environmental Defender's Office assistance to appeal the decision.