Daron R. Hays
Engineer • Builder • Investor • Entrepreneur • Founder
I built my first house at 18. Construction and real estate investing have been part of my life ever since. Even after my engineering degree 10 years later, and working as a structural engineer, I was soon right back to doing what I love — construction and real estate investments. This is a passion of mine, and 100+ investments later, I believe that the best investments start with the best knowledge. This app was once a spreadsheet that I used myself and shared with family and friends, now this version is faster, easier to use with amazing charts and data — in seconds.
Credentials
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30-year licensed contractor
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B.S. Structural Engineering (Honors), Oregon State University
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Active real estate investor
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Private investments, idé investments, LLC
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Full-stack developer (React, Node.js, Tailwind, Python, Supabase, Stripe, integrations across the stack)
Founder & developer — RefiFastCalc.com
Built to Help You Succeed
The RefiFastCalc.com analysis engine was designed from decades of personal experience in real estate investments, engineering and construction — every important calculation and analysis for a confident refinance decision provided in seconds.
RefiFastCalc.com exists to help you make the best possible informed refinance decisions, to help you avoid the bad deals, and profit from the good ones. It’s a professional-grade analysis platform, based on decades of real-world analysis. I built RefiFastCalc.com the way I build everything — with precision, transparency, and a focus on creating both short term and long-term value for you.
Get Professional-Grade Analysis
My goal is to give you the best possible data and information possible, to help you make the best decisions possible. Why get outsmarted by a better-informed lender or broker? RefiFastCalc.com gives you the same rigorous analysis used by professional investors — the same analysis I use for my own financing decisions. Knowledge is power — use that power to negotiate better, compare offers with confidence, and sometimes, yes, to walk away from a deal that does not meet your standards.
What This Means For You
Make your next financing decision with confidence. RefiFastCalc.com is a professional-grade analysis platform built by someone who has personally completed 54 construction projects, managed private capital, operated multiple businesses, and analyzed hundreds of real estate deals. Every feature exists because of real experience.
For Homeowners Weighing a Refi
RefiFastCalc.com gives you the same rigorous analysis used by professional investors — the same analysis I use for my own financing decisions, now available for yours.
For Partners and Affiliates
I built RefiFastCalc.com the way I build everything — with precision, transparency, and a focus on creating long-term value. Give your audience the best. Let’s start building your project together.
For Companies and Collaborators
Experience from engineering, real estate investment, construction, yoga business owner, and AI-powered software — I’ve spent 30+ years solving complex problems across diverse industries. I bring that same versatility to every collaboration.