The Greenmeadows New World Cafe worker said it was "amazing" how the community has responded.
"My step mum posted on Facebook and so many people have commented with offers of clothes, toys and nappies."
She was hopeful of finding a flat before her baby is born.
"I think a newborn might cramp my dad's style a bit, so fingers crossed we find something soon."
The young couple are currently jumping between Ms Annan's father and her grandmother while they save up some money and work out how to move forward.
Ms Annan said neighbours alerted authorities who attended the fire at around 6.54pm on Sunday.
She had been out picking up a few groceries and returned home to her home engulfed in flames. "We came home and our house was in flames.
"We lost absolutely everything."
Ms Annan said she is still unsure what caused the fire.
Mark McGill from NZ Fire Service's Napier station confirmed this, saying while the service was unaware at this stage as to the cause of the blaze, it began in the kitchen and three fire appliances - including one from Hastings - attended the incident.
He said they were on the scene for about one hour and 40 minutes.