Elyse LaFace, Winstone environmental co-ordinator, sent out invitations to the meeting on Saturday to examine the plans.
"Join us to view preliminary designs for the development and discuss the proposed scheme with our experts," the invitation says.
Mr Bryant said 1200 to 1800 residences might be built, up to six levels high. The quarry would be partly filled in and the residences spread out from there on to a playing field and land below a carpark.
"There would be between 3300 and 5000 extra people."
He said he was concerned about traffic because plans showed the main access to the housing estate would be off the relatively quiet Grahame Breed Drive, which runs off Mt Eden Rd.
Winstone Aggregates' Three Kings Quarry:
* Auckland's largest scoria quarry, more than 34m deep.
* Operating for more than 80 years.
* To be partly filled in and redeveloped.
* The Three Kings open day is at 10am-2pm on Saturday, February 1, at the Lynfield Room, Fickling Convention Centre, 546 Mt Albert Rd.