Blend, which makes tools used by banks to evaluate mortgages, raises $100M Series D led by Greylock
San Francisco-based Blend is simplifying the process of mortgage applications for both borrowers and lenders, but is looking to expand into other lending products.
Context & Ripple Effects
Blend's 2017 Series D was the first rung of what became one of fintech's fastest funding ladders: the $130M Series E two years later put it near a $1B valuation, a $75M Series F in 2020 lifted that past $1.7B, and a $300M Series G at $3.3B preceded its market debut valuing it near $4B. The through-line is the same pitch as this round — software that replaces the paperwork of loan origination inside banks.
What makes the 2017 raise worth revisiting is who came after: Multiply Mortgage's AI-based origination service and Tidalwave's AI agents for document checks are attacking the exact workflow Blend digitized, now with agents rather than forms.
First-order effects
- Greylock's $100M gives Blend the capital to push beyond mortgages into other lending products, deepening its seat inside bank loan workflows while borrowers get a simpler application process.
Second-order effects
- The scale-up validates digital mortgage software as a bank-budget line item, which is precisely the budget later entrants like Multiply Mortgage and Tidalwave are built to capture with AI-native tooling.
Third-order effects
- If the pattern holds, loan origination consolidates around whoever owns the bank-side software layer — and each generation of platform (forms, then APIs, then AI agents) has to displace the incumbent distribution rather than build it from scratch.
The trend: Consumer-lending infrastructure is moving from digitized paperwork to AI-agent-driven origination, with successive startup generations competing for the same bank workflows Blend opened up.