Statistics NZ said yesterday that the population aged 65-plus had doubled since the early 1980s to 635,200 and was likely to double again by 2040.

Three NZX-listed retirement businesses are in a big growth phase, with more than 1000 new units planned.

A home that was supposed to be a retirement dream has become a fast-tightening noose around its owner's neck, after he has become trapped in a rare situation where he must move - but can't sell.

Mia Geraets lived for 25 years at the resthome her brother helped establish. It was a shock to her family when the resthome operators said the 85-year-old would have to leave the only place she knew as home.

Simon Challies is an innovative thinker whose time at the helm of Ryman Healthcare has been critical to the firm's success, says David Kerr, chairman of the retirement village operator.

Shares of Summerset Group have fallen after major shareholder Quadrant completed the sale of 18.6 per cent of the retirement village operator.

Metlifecare has changed the terms of its much debated $216 million merger deal, as shareholders prepare to vote on the proposal today.

Ryman Healthcare may seek a listing on the ASX as it looks across the Tasman to extend a decade of profit growth.