They were still working to establish what had occurred at the address.
Ellwood will be farewelled at All Saints Chapel at Purewa Crematorium in Meadowbank at midday on March 17, according to a death notice in today's Weekend Herald.
The much-loved daughter, sister, aunt, granddaughter, partner and friend was "taken from us way too soon", the obituary says.
Hamilton's shocked brother, Jesse Hamilton, said earlier this week that funeral preparations were under way and he was finding it difficult to cope with the loss.
The discovery of the bodies followed a police appeal to the public on Tuesday morning to help find Ellwood, saying they were concerned for her safety.
Ellwood was last seen in Newmarket about 9.30am on February 28.
She had last been in contact with family the night before at 6pm and it was said to be out of character for her not to be in contact.
Ellwood is listed on StarNow as being an actor, hair stylist, make-up artist and fashion stylist. She landed a spot on Shortland Street playing a minor character called Mandy Timmins.
However, producers for the soap opera, South Pacific Pictures, said while Ellwood was confirmed to appear as an extra on one episode in 2006, she pulled out at the last minute and the role had to be recast.