Building is set to start today about 30 minutes outside of Nadi, the three flew out on Thursday and have had some time to sightsee in the lead up.
This is one of the first times students have had the opportunity to get involved and Brook and Sunny jumped at the chance.
The two year 13 students are a part of Interact, which is a form of junior Rotary that they take part in at Whanganui Girls' College.
"It's an amazing thing that they want to do, it's something that they've never experienced and I think they'll benefit greatly from it," Howard said.
"They're both so excited, we're going to come back and be able to show the school exactly what it's like over there and how privileged we are in New Zealand."
The work will be very hands-on, with the three of them carrying materials, digging and, of course, hammering home nails.
Habitat for Humanity completes 115 homes around the world every 24 hours for those who have been struck by disaster or are simply struggling to get by.
Taking part in Habitat for Humanity is something Howard has wanted to do for some time.
She recently received a Paul Harris Fellowship from Rotary.
"It's a fellowship that they give out for doing work with international education and in the community, it was a bit embarrassing, but they felt that I was deserving of it," Howard said.
"I just like doing things for people, this time we're giving a family a home they would never have otherwise and it's going to give them a better standard of life."
