What stage does Realyze Ventures invest at?

Realyze Ventures invests at the Pre-Seed, Seed, Series A stages.

What is Realyze Ventures's typical check size?

Realyze Ventures typically writes checks of $550K – $3.3M.

Where is Realyze Ventures located?

Realyze Ventures is headquartered in Cologne, DE.

Realyze Ventures

Venture capital

Cologne · Pre-Seed–Series A · 38 people tracked

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Investment thesis

Realyze Ventures focuses on the built world, backing European founders building technology and innovation for the real estate and construction sectors. Given that real estate accounts for roughly 40% of global CO2 emissions and a large share of energy consumption, the firm sees decarbonization, digitalization, and a shift toward serial prefabrication and industrialized production as the key industry drivers. It invests in startups tackling the biggest challenges in the built environment to deliver climate impact, greater process efficiency, and superior financial returns aligned with EU 2030 goals.

Invests inAgTech Cleantech Climate Tech Construction Tech Energy Hardware PropTechCologneEuropeGermany

Source: firm website, verified Aug 3, 2026.

Stage

Pre-Seed–Series A

Check

$550K – $3.3M

Cologne, DE

Instruments

Equity

Founded

2023

Tracked investments

Team · 38 people

from the firm's website & public directories

Ali-Reza Momeni· Advisory Board Member; Founder & CEO, MOMENI

Investment Advisory Board member and Founder & CEO of MOMENI.

Markus Wiedenmann· Advisory Board Member; Founder & CEO, Art-Invest Real Estate

Investment Advisory Board member and Founder & CEO of Art-Invest Real Estate.

David Nadge· General Partner· Munich, Bavaria, Germanyin

Real estate innovation and sustainability specialist with 10+ years of experience, previously Director of MOMENI Ventures and Head of Digital Experience at SIGNA, and a lecturer on venture capital at the Frankfurt School of Finance and Management.

d•••@realyzeventures.comreveal

Kai Panitzki· General Partner· Cologne Bonn Regionin

Technology expert, entrepreneur, and venture capitalist who founded and managed BitStone Capital and previously served on boards of listed companies and a fintech VC firm.

k•••@bitstone.capitalreveal

Manfred Heid· General Partner· Cologne Bonn Regionin 𝕏

Manfred Heid is a managing partner at BitStone Capital and Realyze Ventures, with a background in banking and finance spanning venture capital, private equity, and infrastructure investment. He serves as a member of the supervisory board at Optiml and focuses on investments in proptech, real estate technology, construction technology, maritime technology, and cleantech sectors.

m•••@bitstone.capitalreveal

Stefan Läufer· General Partner· Cologne Bonn Regionin

Building technology and housing industry veteran with 25+ years of experience, serving as CDO of the GC group, Europe's leading HVAC wholesaler, with a track record in company building and startup investing.

s•••@realyzeventures.comreveal

Tim Fischer· General Partner· Hamburg, Hamburg, Germanyin

Real estate industry veteran with 25+ years of experience and Managing Director of MOMENI Group, with prior executive roles at JLL and Prologis and a background as chartered surveyor, architect, and real estate economist.

t•••@realyzeventures.comreveal

David· Investment Professional

David combines over 10 years of experience in real estate innovation, digitalization, and sustainability. He previously directed MOMENI Ventures and held roles in strategy consulting at PwC and digital innovation at SIGNA, having evaluated over 1,000 startups and executed 60+ innovation projects.

Kai· Investment Professional

Kai is a technology expert with extensive venture capital and entrepreneurial experience. He founded and managed BitStone Capital and previously served as a board member of listed companies and fintech venture capital firms.

Tim· Managing Director

Tim brings over 25 years of real estate industry experience as Managing Director of MOMENI Group. He combines expertise in sustainability-driven asset management with strategic investment perspective, having held executive roles at JLL and Prologis focusing on operations and sustainability.

Daniel Pölt· Investment Manager

d•••@realyzeventures.comreveal

Marnix Roes· Investment Manager· Cologne, North Rhine-Westphalia, Germanyin

Investment Manager at Realyze Ventures with a background in digital transformation and venture capital. Entered the VC ecosystem in 2020 after digitalization consulting in the automotive and banking sectors, and previously helped build an early-stage VC fund leading pre-seed and seed investments in InsurTech, FinTech and Health.

m•••@bitstone.capitalreveal

Alexander von Erdély· Venture Partner

Chairman of the executive board at BImA, Germany's federal real estate agency, and former CEO Germany at CBRE GmbH.

Christopher Lohmann· Venture Partner· Germanyin

Founder of The Mulberry Ventures with 24 years in the European insurance industry, supporting companies and funds on insurance digitalization, talent sourcing, and organizational models.

Constantin Eis· Venture Partner· Hamburg, Hamburg, Germanyin

CEO of CMBlu Energy leading its scale-up in organic solid-flow battery technology; previously CEO of LichtBlick, co-founder of Casper Europe, and CFO of home24.

Julia Arlt· Venture Partner· Vienna, Austriain 𝕏

Entrepreneur and founder of four companies with a successful exit; led PwC's global digital real estate strategy and supported funds including Fifth Wall and MetaProp.

Marc Stilke· Venture Partner

Seasoned CEO and chairman known for scaling digital companies toward IPO, investing in startups, and advising private equity investors.

Markus Höfels· Venture Partner· Stuttgart Regionin

Founder and entrepreneur with 20+ years in recycling and environmental services; founded the Reclay Group and NOVENTIZ, and now leads innus and develops brownfield projects via raumparks.

Matthias Leube· Venture Partnerin

Founder of Ecouity GmbH and supervisory board member of neoshare AG; formerly CEO & Head of Capital Markets Germany at Colliers, with expertise in institutional real estate and capital markets.

Michael Kokorniak· Venture Partner· Germanyin

Founder and software entrepreneur with 25+ years of experience who scaled a Berlin startup into a global aviation digitalization and decarbonization company; now an investor and consultant.

Michael Stephan· Venture Partner· Berlin, Germanyin 𝕏

Entrepreneur, investor, and lawyer with 20+ years in fintech and digital real estate; founder of Planet Home Investment AG and former general counsel at HV Capital.

Michél-Philipp Maruhn· Venture Partner· Managua, Nicaraguain

Entrepreneur, business angel, and founder/host of the DIGITALWERK Podcast; former CEO of VIVRE CONCEPT Groupe and co-founder of ROOBEO, a construction material procurement platform.

Stefan· Chief Technology Officer, GC Group

Stefan brings over 25 years of experience in building technology and housing, serving as Chief Technology Officer of the GC Group, a leading European HVAC wholesaler. He has extensive experience investing in and advising startup ventures within the housing sector.

Thomas Knaack· Venture Partner· Cologne Bonn Regionin

Banking and management consulting professional with 25+ years of experience and an active business angel with 40+ investments; founded the Rotonda Investor Office in 2017.

Akin· Fund and Transaction Management Expert· Cologne, North Rhine-Westphalia, Germanyin

Akin has extensive experience in fund and transaction management, with background in real estate, M&A, and venture capital sectors.

a•••@realyzeventures.comreveal

Akin Özdemir· Director Finance + Prokurist

Fund and transaction management expert with experience across real estate, M&A, and venture capital; graduate of Fresenius University of Applied Sciences in business administration.

Jan· Investment Associate· Munich, Bavaria, Germanyin

Jan joined as an Investment Associate with prior experience at venture capital and corporate venture capital funds investing in InsurTech, FinTech, and Digital Health sectors. He brings deep understanding of early-stage technology scaling and holds an entrepreneurship degree.

d•••@realyzeventures.comreveal

Jan Reemen· Investment Associate

Investment Associate with prior experience at VC and CVC funds in InsurTech, FinTech, and Digital Health; holds a master's in entrepreneurship from HHU Düsseldorf.

Johanna· Communications Manager· Greater Valencia Metropolitan Areain

Johanna manages external communication for Realyze Ventures, overseeing brand strategy, content, public relations, and social media. She brings expertise in data-driven storytelling and holds degrees in economics and marketing analytics.

j•••@godigital21.dereveal

Johanna Schulz· Communications· Greater Valencia Metropolitan Areain

Manages Realyze Ventures' external communications, including brand, content, PR, and social media; holds degrees in economics and marketing analytics.

Jürgen Fenk· Advisory Board Member; Member of the Executive Board, Zech Group SE

Investment Advisory Board member and Member of the Executive Board at Zech Group SE.

Kay Wolf· Advisory Board Member; CEO (Chairman of the Management Board), Deutsche Pfandbriefbank AG

Investment Advisory Board member and CEO (Chairman of the Management Board) of Deutsche Pfandbriefbank AG.

Marnix· Investment Manager

Marnix joined Realyze Ventures with expertise in digital transformation and venture capital. Prior to 2020, he specialized in digitalization consulting in automotive and banking sectors and led pre-seed and seed investments in InsurTech, FinTech, and Health at an early-stage VC fund.

Matthias· Investment Analyst

Matthias joined as an Investment Analyst focusing on pioneering technologies at the intersection of construction, real estate, and energy. His interdisciplinary background in business administration and mechanical engineering enables rapid assessment of deep technical innovations with commercial viability.

Prof. Dr. Alexander von Erdély· Chairman of the Executive Board, Bundesanstalt für Immobilienaufgaben (BImA)

Prof. Dr. Alexander von Erdély serves as Chairman of the Executive Board at Germany's federal real estate agency (BImA). He brings extensive leadership experience from his prior role as CEO Germany at CBRE GmbH.

Thomas· Advisor

Thomas is a seasoned professional with over 25 years in banking and management consulting who has made over 40 angel investments. He founded Rotonda Investor Office in 2017 to provide comprehensive market and investment support services.

Thomas Werner· Advisory Board Member; Member of the Executive Board, Cordes & Graefe KG

Investment Advisory Board member and Member of the Executive Board at Cordes & Graefe KG.

Matthias Lederbogen· Investment Associate· Cologne, North Rhine-Westphalia, Germanyin

Investment analyst/associate focused on technologies at the intersection of construction, real estate, and energy, with a degree in business administration and mechanical engineering from RWTH Aachen and Aalto University.

m•••@bitstone.capitalreveal

What they invest in

from 4 of 8 portfolio companies

AI & Machine Learning ×2Climate Tech ×2Energy ×2Enterprise Software ×2Cleantech ×1Construction Tech ×1IoT ×1PropTech ×1

HQs:Germany×2Belgium×1Switzerland×1

Investments · 8 tracked

founders shown can be your intro path

alagoalago.aiin

Alago creates ready-to-send JF protocols and VOB correspondence from notes, transcripts, or dialogue for construction projects.

AI & Machine LearningConstruction TechEnterprise SoftwareFrankfurt, DE

Companioncompanion.energy

Companion.energy provides a software platform that connects, models, and automates enterprise energy operations and procurement for large companies.

AI & Machine LearningEnergyEnterprise SoftwareSaaS

BoardJonas

encosa

Full-service platform combining intelligent battery storage systems with advanced software to optimize energy consumption and reduce emissions

Fuchs & Eule

Digital energy consulting platform enabling homeowners to finance and implement sustainable, energy-efficient renovations

Plancraft

SaaS platform that simplifies financial processes and project management for small craft businesses

Vamogetvamo.dein

Vamo offers residential air-to-water heat pumps as a complete package, handling consultation, subsidy applications, and installation within three days, plus ongoing remote monitoring and warranty through its Vamo Care service and app.

CleantechClimate TechEnergy

Vestigas

Platform that digitizes delivery notes for construction sites, connecting contractors and suppliers to cut processing effort by up to 80%

vibooviboo.ioin

viboo provides AI-driven heating control and digital energy management software for older buildings to reduce heating costs and emissions.

Climate TechIoTPropTech

Portfolio news

latest coverage across their companies

Tombot Raises $7M to Scale AI Robotic Companion for Aging-in-Place Market | citybiz

Companion · citybiz.co · Jun 29, 2026

Frequently asked questions

What stage does Realyze Ventures invest at?: Realyze Ventures invests at the Pre-Seed, Seed, Series A stages.
What is Realyze Ventures's typical check size?: Realyze Ventures typically writes checks of $550K – $3.3M.
What sectors does Realyze Ventures focus on?: Realyze Ventures focuses on AgTech, Cleantech, Climate Tech, Construction Tech, Energy, Hardware, PropTech.
Where is Realyze Ventures located?: Realyze Ventures is headquartered in Cologne, DE.

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