Castle is a New York-based fintech building payments infrastructure for the roughly $3 trillion Americans spend on their homes each year. Its consumer app turns the chaotic paperwork of homeownership - utility bills, property and school taxes, insurance, renovations and maintenance - into a single digital filing cabinet with automated bill pay, transaction monitoring that surfaces tax credits, rebates and overcharges, and fraud protection. Founded by Madeline Hung after a gut-renovation of a historic Hudson Valley photo studio revealed how little data homeowners have on their biggest asset, Castle says its average customer saves over $10,000.
Belong is a tech-enabled, AI-powered rental management network that vertically integrates the entire home-rental experience for both homeowners and residents. It markets homes across 26+ listing sites, vets residents, collects rent, handles maintenance, and offers homeowners Guaranteed Rent so they get paid on the first even when a resident is late. The mission is to let homeowners become financially free while helping residents feel they belong - and eventually become homeowners themselves.
Aven is a San Francisco-based fintech that built the first credit card backed by home equity. It pairs a Visa with a HELOC so homeowners can borrow against their house at mortgage-like rates while earning 2% unlimited cash back. Founded in 2019 by ex-Facebook and Square engineers, Aven hit a $2.2B valuation in 2025 after a $110M Series E led by Khosla Ventures and is building what it calls a 'machine banking' platform for American homeowners.