Ratio

ratio.cx ↗ ·Barcelona ·Pre-seed

Ratio is a Barcelona-based proptech that digitalises the full residential and commercial real estate development cycle, connecting Spanish developers with international investors through a platform covering project structuring and financing, project management, process automation, investor onboarding/reporting and pre-sales. It handles legally compliant investor registration, AI-assisted tax and legal Q&A, digital signature and multi-currency profit distribution, and also runs the 'Club de Inversión Ratio' for off-market opportunities. Launched in January 2024, it facilitated over €10M of real estate investment across six Barcelona projects with ~170 international investors in its first year, raised €650K in 2025, and later invested €400K to launch Ratio AI, described as the first Claude connector built for real estate developers.

Founded

2024

Founders

Total funds raised

€450K

SectorsProptech, Real Estate Investment, Fintech, AI Start-up MapProptech & Construction › Real estate investment & co-ownership fintech

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Founders

Iván Párraga García

Co-founder & CTO

Also at seQura →

Nicolás Araujo Müller

Co-founder & CEO

Ricard Tapias i Guillén

Co-founder & COO

Global models 5

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