Lugton's was ordered to pay the penalty on Friday, the same day Barfoot & Thompson, Harcourts, LJ Hooker and Ray White were fined a combined $9.8 million for colluding at a national level.
The competition watchdog reached settlements with Bayleys at a national level, as well as Success Realty (trading as Bayleys in Hamilton) and Manawatu-based Unique Realty and Manawatu 1994 (trading as LJ Hooker) at a regional level, and court-imposed penalties have reached $16.4 million including Lugton's fine.
Property Page (NZ), which operates the realestate.co.nz site, has also agreed to pay $100,000 towards investigation costs as part of its settlement.
Hamilton realtors Monarch Real Estate trading under the Harcourts banner, Lodge Real Estate, Online Realty trading as Ray White, and two other individuals are still defending the charges, with a hearing set down for September next year.
The regulator also warned eight other agencies for their conduct.
The agencies were Coast to Coast (trading as Bayleys), Alrose (trading as REMAX Palmerston North), Rural and Lifestyle Sales.com, Real Estate House Manawatu (trading as Ray White), Harcourts Team Manawatu Realty, Watson Real Estate, PGG Wrightson Real Estate and Monty's Real Estate.