"It's a huge amount of space and it is really quite frightening."
Lawrenson Group chief executive John Lawrenson said the proposed business zone was too large.
But Hamilton Mayor Julie Hardaker said it was a good move for both the success of Claudelands and the greater city.
Submissions for the proposed district plan open on Monday.
Sizing it up:
• The proposed Claudelands area to be rezoned, including the western side of Heaphy Tce and the southern side of Brooklyn Rd, is about 3.4ha.
• The block bound by Victoria, Hood, Collingwood and Alexandra Sts, largely making up the CBD's south-end hospitality precinct, is about 2.4ha.Businesses say 'hypocritical' idea will undercut work to revitalise struggling central-city area