About Property Data Labs

Built from a property-research problem I had myself.

Hi, I'm Yann. I'm a software engineer and real estate investor based in Umeå, Sweden. I built PropertyDataLabs to solve my own data headaches, and now it helps thousands of others do the same.

The Origin Story

My journey into building tools for real estate started back in 2021 with a small project called Real Estate Buddy. It was a simple, free browser extension designed to calculate mortgage repayments directly on Zillow and other real estate sites. I built it because I was tired of switching tabs to run basic numbers.

That project showed me two things: people doing property research needed better tools, and I wanted to keep building them. It didn't track users, it was free, and it just worked. That philosophy stuck with me.

The Pivot to Data

By late 2022, I realized the bigger problem wasn't just calculation—it was extraction. Investors and agents were spending hours copying and pasting listing data into spreadsheets. I founded Property Data Labs (formerly Zillow Data Exporter) to automate this.

What started as a tool to help me analyze rental markets quickly grew into a platform used by thousands. The goal was simple: turn hours of manual entry into seconds of automated work.

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Engineering Background

Before going full-time on Property Data Labs, I spent years as a software engineer honing my skills in scalable systems.

  • Backend Developer at Tise (now part of eBay) (2021-2024)
    Built scalable backend services using TypeScript and AWS for a sustainable fashion marketplace.
  • Software Engineer at ActivePipe (2020-2021)
    Specialized in data imports and marketing automation for real estate agents.
  • Full-stack Engineer at Genie Solutions (now Magentus) (2016-2020)
    Developed cloud and desktop practice management software for medical professionals.

I also cut my teeth founding other projects like TesolHub (a job portal for teachers) and JobCompanion. Some worked, some didn't, but every line of code led me here.

Why I Keep Building

Property Data Labs is founder-led. I use the product for my own property research, read every support email, and turn that feedback into regular improvements. If you have a feature request, you're talking directly to the person who writes the code.

Get in touch

I'm always happy to chat about real estate, code, or feature ideas.