The claim lists 36 alleged "defects" with the building which it says have caused leaking, corrosion and other damage totalling more than $4.5 million.
The claim also alleges apartment owners have suffered "stress and inconvenience" amounting to $1.695 million.
Romanus Ltd, whose director was Wellington property developer Andrew Fawcet, was placed in liquidation in July last year with an initial liquidator's report estimating the company had debts of just under $2 million, including $925,000 owed to Inland Revenue.
Alexander Lachlan Ltd's two directors are Mr Fawcet and Napier City Councillor Mark Hamilton.
Mr Hamilton is managing director of Alexander Construction, the company which built the apartments and is also named as a defendant in the statement of claim. Neither Mr Hamilton nor Mr Fawcett are personally named as defendants in the claim.
Napier City Council chief executive Wayne Jack said he was unable to comment on the implications of the body corporate's claim for ratepayers because the council was working through a legal process.
"We're working through a process. We hope to get it resolved shortly."
The chair of the body corporate, Mike Francis, declined to comment, citing the ongoing nature of the claim.
Mr Hamilton also declined to comment.
According to the statement of claim, the 97 apartment owners taking part in the action are each seeking either $15,000 or $25,000.
Those damage claims arise from "the discovery of the defects, concern about the diminished value of the units, general anxiety arising from the uncertainty of owning a unit affected by the defects and difficulties over the prospect of selling their unit while it suffers from the defects, and having to live in their unit while remedial works take place or disruption to tenancies experienced by owners who do not live in their units".