Weeks after Seven Sharp heard from a pregnant mother living in a mouldy two-bedroom unit for $450 a week, the landlords have finally been - grudgingly - tracked down.

Sue and Stephen Bhana own the unit, which floods during wet weather, attract mould and cockroaches and have gaping holes in the walls and ceiling.

The market rate for a two-bedroom unit in this area is about $290 per week, but Stephen says $450 is fair because his units are furnished.

They also own several other units around Rotorua in various states of disrepair, and former tenants say they have been like that for quite some time, though Stephen denies that.

"Regarding the allegations made by your tenants, there's no allegations!" he told Seven Sharp.

"There is no damage in the units."

He said a property inspection was available for his unit, but declined to produce the document.

Tenant Roimata Whitney says she signed the document on the condition that Stephen would clean the places up, and when he didn't they got Stephen to sign 14-day notices, which he denies.

He claims that his signature was forged by the tenants.

"They are forged because there's no 14-day notices received from them whatsoever," he said.

The next step for tenants would be taking the Bhanas to the Tenancy Tribunal. Tenant David did so after his family went without hot water for 36 days and he was award $1700, but the tribunal has now granted Stephen's application for a re-hearing.

The Bhanas manage their properties, but on paper the landlord is Ranolf Trust - an entity which Stephen and his sister Sue have been very reluctant to discuss.

In 2014, they were ordered to produce documents about the trust and what it did, but failed to do that and also to show up to high court, resulting in fines of $13,000.

Ms Roihana just wants other people to be aware.