The all-up borrowing rate at 95 per cent loan-to-value ratio (LVR) could be as low as 4.09 per cent per annum.
Some other banks are offering loans for around 2 per cent but require higher deposits.
John Bolton, Squirrel founder and chief executive, said Launchpad was motivated by seeing first-hand the frustration of many first home buyers trying to get on to the property ladder.
"People were coming to us totally frustrated at their inability to buy a home because the market was outstripping their ability to save the required deposit, so we set about designing something that could help as many of them as we could.
"Being in the unique position of being both a mortgage broker and a peer-to-peer lender, we felt there must be something we could do with a bit of imagination, and Launchpad is it."
Bolton said while Launchpad wasn't a solution for "everything or everyone", it serviced those with good income but who haven't saved enough deposit and don't have the luxury of mum and dad being able to help out.
"We're just levelling the playing field and giving more people the opportunity to buy on their own and sooner than if they have to save a larger deposit.
"Squirrel wants to reinvent the mortgage market and make buying a home easier. Watch this space as we have plenty more innovation to come."
Applicants must be New Zealand residents and first home buyers who are planning to live in the property, which must be in a metropolitan area.
Squirrel also requires deposits, which can include KiwiSaver, to be genuinely saved, and not gifted.
And while friends or siblings can apply together for loans, there can be no more than two, and they must both live in the property.
For those looking to purchase an apartment, they would need to be a minimum 50sqm and a 10 per cent deposit required - compared with the 20 per cent most banks require.
Squirrel's chief operating officer Dave Tyrer said if they can help more people realise the dream of home ownership, then that has to be a good thing.
"At the same time, we're giving retail investors the opportunity to invest into residential mortgages and personal loans and get returns between 4.00 per cent - 7.50 per cent per annum, knowing they are also helping build New Zealand. It's win/win and starting to change the way money works in this country."