Mourning friends and family have expressed their grief over the stabbing death of Morgan Huxley as police investigate whether his killer was someone he knew well.
Police say they are looking at Mr Huxley's previous relationships after he was stabbed multiple times in his Neutral Bay unit.
One of his close friends, Stewart McDonald, said he would miss spending time with his mate on Sydney Harbour.
"Wish we were sitting on a barge again talkin dang and having a few lazy beerios mate. Every day on the harbour for 4 years, not a day went by where you didnt put a smile on my face mate. I miss you and always will," Mr McDonald said on an obituary page.
One of his football friends, Rhydian Giles, described his death as a tragedy.
"A real larger than life character who brightened the lives of everyone around him. A real tragedy - RIP Mate," Mr Giles said.
Just hours before his death, small-business owner Mr Huxley was a enjoying a drink by himself at his local pub, the Oaks Hotel.
Security footage captures the 31-year-old walking into the Military Hotel at 1.01am dressed in a T-shirt and shorts, with his sunglasses on his head. He appeared to be barefoot.
The well-known regular, adored by many of the bar staff, is then seen leaving around closing time, about 1.30am.
A short time later his Irish flatmate found him suffering from stab wounds in the bedroom of the Watson Street unit they shared.
Police said the woman called triple-0 and they did not believe she had any involvement in his death.
A resident who lived in the same Oakleigh unit complex said police at the scene had told her the attack was not random. It is understood police were escorting residents as they took their garbage bags to a communal rubbish room in the days after Mr Huxley's death.
"I'm not concerned if it's not random. I would be concerned if there was some nutter running around stabbing people, but it doesn't seem like that's the case," the resident said.
A number of residents have told Fairfax Media police spent hours scouring through the bins on Watson Street and Laycock Avenue, which is behind the block.
Mr Huxley was the loved son of Allan and Dee, brother of Tiffany and Oliver, and dear friend of many.
A funeral will be held next Tuesday.
On Thursday detectives were still visiting businesses on Military Road to view any security footage taken on the night.
One business owner said police were interested in viewing footage taken between 12.15am and 3am.
Homicide detectives and Harbourside police are investigating Mr Huxley's death under Strike Force Bandt.
Police are appealing to the public for information and asking for anyone who saw or heard suspicious activity on Watson Street in the early hours of Sunday to come forward.
Mr Huxley owned and worked for his small business, Huxley Marine, which was registered at a Balmain address.
He graduated from Hunters Hill High School in 2000 before going to Sydney TAFE at Ultimo.