Campaigners fighting the Lynnsport road and housing proposals have demanded a third vote on the scheme, claiming West Norfolk Council again breached its own rules on the scheme.
Planning committee vice-chairman Mick Peake did not take part in the site visit which was made during Friday’s special meeting, but did vote in favour of the scheme afterwards.
Objectors have pointed to the council’s constitution, which states that committee members should not participate in votes on a planning application “unless you have been present at the previous meeting and subsequent site visit to hear the entire debate.”
But the council has said it is satisfied with Mr Peake’s participation in the vote. A spokesman said no debate had taken place during the visit and that Mr Peake had visited the site a couple of days before Friday’s meeting.
But the Lynnsport Area Residents Association (LARA) has formally complained to council chief executive Ray Harding about the issue.
The group has previously complained about the conduct of committee members at the initial meeting last month.
UKIP group leader Paul Foster said: “They don’t think it will make a difference. They just want to see it done fairly.”