The home where the fire started and adjoining properties remain cordoned off.
Det Snr Sgt Ford said detectives and ESR scientists were continuing their scene examination today.
'We hope to conclude that today, and the cordon will be lifted.'
He said the inquiry team believe there will be people in the Tokomaru Bay community who will be able to provide helpful information about the man's death.
'Our inquiries continue around the community and we encourage anyone with information to come forward.
'We encourage people to come and talk to us.'
The inquiry team have based themselves at the Tokomaru Bay police station.
'Anyone who wants to talk to us can go there.'
The fire in the house was put out by firefighters from FENZ Tokomaru Bay volunteers and was confined to the lounge room.