Byron Bay's former Casuarina Ocean Health Retreat wants double its 2016 sale

The former Casuarina Ocean Health Retreat, which sold for $4.1 million less than two years ago, is back for sale - asking double its last sale price.

The property at 770 Casuarina Way was also known as the Cabarita Ocean Health Retreat before it was shut down in 2015 by its then Brisbane family owners.

They decided to develop and 18-lot subdivision on 2.5 hectares behind the retreat. The area included the resort's tennis court and swimming pool.

They listed the property for $6.5 million, with Bruce Williams, the listing agent at the time, saying it was being sold "well below replacement cost". It went on to sell for $4.1 million after sitting idly on the market.

Raine & Horne Byron Bay agent Sophie Christou, the listing agent this time round, said its $8 million to $8.8 million guide is still below replacement value.

The resort dates back to the 1970s when developed by Cabarita identity Ken Hansen. It has passed through the hands of several owners and run as a holistic health spa before ending up with the Brisbane family.

Until a few year ago, guests were paying up to $1045 a day to stay there, indulging in detoxifying therapies, massages, consultations with a naturopath and macrobiotic foods.

The retreat with direct access to Casuarina Beach boasts 12 bohemian inspired ensuited bedrooms, a day spa with six treatment rooms, gym, and a yoga room.

There's approval for a restaurant or cafe open to the public, as well as approval for a 25 metre swimming pool and an extra gym.

A rooftop terrace has views to Mount Warning.