Customers of the mobile-only bank will initially be able to manage their Habito mortgage or contact a digital broker directly through the app.
In the next stage of the partnership, Habito will be able to use customer current account data to identify when they are able to save money on their mortgage.
For example, if a borrower has had a pay rise or a change in circumstances.
Daniel Hegarty, founder and Habito chief executive told Mortgage Solutions he hopes this feature will launch later this year, once the parameters of the data protection act GDPR have been fully navigated.
He added: “With these partnerships – there is opportunity to monitor when customers are ready for a better deal.
“Interconnected financial services make a huge amount of sense to us.”
A single personal finance view
Insurers, pension providers and investments will also be available through the Starling Marketplace feature, giving customers a platform to access a variety of financial services.
Starling Bank said it has 100,000 customers, after launching its app-based current account last year.
Hegarty said: “Via the Starling app customers can manage their mortgage seamlessly and enjoy the hassle-free and instant service that is the new standard set by this generation of financial products.”
Alongside Habito, digital pension provider PensionBee, digital investing service Wealthsimple and Kasko travel insurance have tied up with Starling Bank.
Most partnerships will go-live online over the next few weeks, with Pension Bee online from today.
Starling Bank is aiming to announce at least 25 partnerships over the coming 12 months.
Megan Caywood, chief platform officer at the bank, said: “The expansion of our Marketplace is a huge milestone for Starling as we continue to give our customers control of their money like never before.
“We are building a banking experience fit for the 21st Century, where the best financial products are available securely in one place.
“Last year, we launched our full set of Open APIs, and enabled integrations with companies like Moneybox, Yoyo Wallet, Yolt, Tail, and Flux.
“Now we’re excited to take that to the next level by integrating financial services providers into the Starling Marketplace.
“2018 is a huge year for Starling and the Marketplace offering is at the heart of our ambition.”