Venture builder — Est. 1982 by Werner Valeur
A home for founder-minded, self-driven and ambitious people. We don’t invest in other people’s ideas — we build them ourselves.
01Founder’s letter
From the desk of Werner Valeur — entrepreneur since 1982.
“We don’t invest in other people’s ideas and dreams — we build them ourselves.”
I’ve been an entrepreneur since 1982 — born to build, explore, and learn. Curiosity and a drive to tackle things I’ve never tried before have always defined me. Along the way, I’ve faced challenges, celebrated successes, and embraced the freedom that comes with entrepreneurship.
MAD HOUSE is the culmination of my knowledge, drive, and visionary mindset. It’s a place where I’ve brought together a rare breed of talented, battle-ready, and like-minded individuals. Together, we stand shoulder to shoulder, working on the most challenging ventures and creating the strongest brands in their industries. We transform visionary ideas into scalable startups, built on rock-solid foundations.
02Our residents
Eleven companies under one roof. Built from scratch by battle-ready founders who share the house, the values and the ambition.
Fights for your right to clear, honest and affordable electricity — simple, transparent plans at low, fixed rates.
Michael Sørensen
CEO & Co-founder
Consolidates all company expenses and corporate cards into one platform — from expense to approval, accounting and payment.
Oskar Klæbel
COO & Co-founder
An intuitive platform that simplifies shift planning, time tracking and team communication.
Jimmy, Rasmus & Kristian
Founders
Automates the admin of running an association, so volunteers can focus on community.
Thomas Kristiansen
Founder
Monitor electricity prices up to seven days ahead and track household consumption.
Anne & Philip
Founders
Innovative gaming peripherals that build muscle memory and boost consistency.
Kenneth Skriver
CEO & Founder
Professionally designed PowerPoint and Keynote templates for presentations that captivate.
Johannes Ottesen
Co-founder
A canary for your home: Birdie drops down when CO₂ levels rise, prompting you to ventilate.
Andreas & Hans
Founders
Timeless, handcrafted trousers in premium materials — as if there were no tomorrow.
Selcuk Kaya
Co-founder
Thoughtfully designed products that put child safety and comfort first — made in Denmark.
Tatiana Specht
CEO & Founder
A specialised Danish real estate agency for high-end homes, combining insight, data and aesthetics.
Bo Lynge
CEO & Founder
03 — Manifesto
Some might say it’s mad to take in projects based on passion and people, rather than numbers and spreadsheets — I guess that makes us a Mad House.
Werner Valeur
04Media
Finans
In print
Børsen
In print
Berlingske
In print
05Knock on the door
Still scrolling? Get in touch.
Step into the madness.