Contamination at this West Auckland property was more than 3000 times the levels certified as safe for former P laboratories.

A house-turned-methamphetamine lab set for demolition was instead advertised for sale on a house relocation website.

Stuff earlier reported on a $1 million house at a West Auckland property that was so contaminated with methamphetamine by its tenants it would have to be demolished.

Contamination at the property, which was more than 3000 times the levels certified as safe for former P laboratories, saw landlord Zhe (Sunny) Qu awarded $29,800 from the Tenancy Tribunal to demolish the house.

Adjudicator Christina Ter Haar said "I accept that the level of methamphetamine was so high in the major dwelling . . . that it required demolition rather than cleaning".

READ MORE:

* $1m Auckland home must be demolished after tenants cooked meth inside

* Housing NZ to compensate 800 tenants over bogus meth testing

* The meth house is a myth: There's 'no risk' from drug smoking residue, Govt report finds

* Meth house myth: Why hundreds of safe homes were left empty in middle of a housing crisis

An additional $2026 was awarded to the landlord for asbestos issues which would make the demolition pricier.

But instead of being demolished, the house was listed on Haines House removal as a house for sale with a price-tag of $80,000 plus GST.

Qu denied the house was listed for sale on the website, saying, "No, I can't understand this one".

When asked why the house was listed, she told Stuff: "I don't know".

Qu then said "I'm very busy" and would not comment further.

There was no mention of contamination levels on the listing, but there was also no descriptive text attached to any listings on the site.

GOOGLE MAPS The Tenancy Tribunal said this West Auckland property would have to be demolished due to extensive methamphetamine contamination.

One buyer who tried to buy the property said they were only told the house was a "P house" after they had received quotes from painters, builders, and electrical workers and were getting ready to sign a sale and purchase agreement.

When they asked the seller for the existing meth test report, they were told it had been lost.

A spokesperson for Haines House removal said the company had initially signed a contract to buy the house from Qu, but then found it was a former methamphetamine lab.

"I said to her 'We will not be taking this house'."

Qu's contract had a requirement that any methamphetamine issues be disclosed, the spokesperson said.

"Generally if there's P involved I don't touch them at all, it's a game-changer."

The spokesperson said Qu was "quite desperate" to sell the house and the company later agreed to list her property and transfer it to a new owner.

"I said to her, 'look, I'll keep marketing it but I have to disclose it's a P house to whoever takes an interest in it'."

Haines was alerted to the house's history as a former methamphetamine lab by another house mover who saw its listing on TradeMe, the spokesperson said.

The spokesperson said Haines did meth checks on "99 per cent" of houses they purchased.

In this case a salesperson "no longer with the company" had offered the house to someone on a buyers' waiting list before a check was done, the spokesperson said.

One potential buyer said their own methamphetamine test on the property showed the buyer might as well "light a match" on the house, as no part could be completely cleared of methamphetamine.

The Tenancy Tribunal accepted a meth test which saw methamphetamine levels of 5993.34μg per 100cm2 detected at the house.

Bindi Norwell, the chief executive of the Real Estate Institute of New Zealand, said home removal websites were "effectively the same as a private sale" and sellers didn't have the same obligations as real estate agents.

Where a property was used for meth production and tested at levels above 15μg per 100cm2, real estate agents must declare the results of methamphetamine tests to prospective buyers, she said.