BitStone Capital
Venture capitalKöln · Seed–Series A · 12 people tracked
Investment thesis
BitStone Capital invests in innovative and sustainable technology companies transforming the construction and real estate sectors (PropTech and ConTech). It organizes its focus into verticals: Plan & Build (digitalization of construction processes), Manage & Operate (sustainable building operation and efficiency), Finance & Transact (real estate financing, brokerage and investment platforms, analytics and data), New City Solutions (new concepts for living, working and retail), and Climate Solutions (technologies to measure and reduce greenhouse gas emissions). It positions itself as a platform connecting startups, investors, industry and mid-sized companies to foster open innovation ecosystems. After two funds, it now operates under the new fund generation Realyze Ventures.
Source: firm website, verified Aug 7, 2026.
Team · 12 people
from the firm's website & curated & public directories
What they invest in
from 21 of 22 portfolio companiesPropTech ×13SaaS ×10Construction Tech ×9AI & Machine Learning ×7Cleantech ×6Climate Tech ×4Cloud Computing ×4Enterprise Software ×4
HQs:Germany×14Switzerland×2United States×1
Investments · 22 tracked
founders shown can be your intro path
aedifion provides a cloud platform with AI-powered building analytics and autonomous control systems to optimize energy consumption and operating costs for commercial real estate portfolios, achieving up to 40% savings in energy, CO2 emissions, and operational expenses.
AI & Machine LearningCloud ComputingPropTech
Co-investorsPhoenix Contact Innovation VenturesWorld Fund
alcemy provides software that uses cement producers' lab data to predict cement strength in real time and automate recipe and mill fineness decisions, aiming to reduce clinker content and cut CO2.
Advanced ManufacturingAI & Machine LearningCleantechClimate TechConstruction TechBerlin, DE
Leopold Spenner(CEO)inRobert Meyer(CTO)in
Co-investorsEntrepreneur FirstHAWKTAILGalvanize Climate Solutions
Architrave provides an AI-powered document and asset intelligence platform for commercial real estate, automatically classifying, extracting, and validating data from property documents against a standardized data language of 468 document classes and 1,361 data fields.
AI & Machine LearningPropTechSaaS
Co-investorsPride Capital PartnersPT1
Green Fusion provides energy management solutions for the residential real estate sector to optimize heating transitions and reduce carbon emissions.
CleantechClimate TechEnergyPropTech
Matteo Zappulla(Chief Technology Officer & Co-Founder)Simon Wagenknecht(Chief Engineering Officer & Co-Founder)Nina Germanus(CEO & Co-Founder)Paul Hock(CEO & Co-Founder)Thomas Filkorn(Chief Revenue Officer & Co-Founder)Chris Menzel(Chief Innovation Officer)
Co-investorsBrandenburg Kapital
Lichtwart provides a service platform for light, energy, and building management that connects buildings and facilities with service technicians via a hardware module and cloud application.
CleantechEnergyIoT
node.energy provides a software platform for commercial asset management of renewable energy facilities, helping operators automate regulatory compliance and financial reporting for wind and solar parks.
EnergyEnterprise SoftwareSaaS
Co-investorsDeepTech & Climate Fonds10x Founders
Okibo builds battery-operated robots that automate painting and drywall finishing for skilled construction teams, using AI-guided 3D scanning and real-time modeling to operate without special setup.
AI & Machine LearningConstruction TechRoboticsEnglewood, US
Nadav Shuruk(Founder)in
Co-investorskineo financeShadow Ventures
OptimL appears to provide decision intelligence and data services for real estate professionals including property owners, investors, portfolio managers, asset managers, and transaction managers.
AI & Machine LearningClimate TechCloud ComputingData & InfrastructureImpact & Social GoodPropTech
Co-investorsKOMPAS VCPlanet A Ventures
GebäudeCheck by PLAN4 is software for structured on-site condition assessment of existing buildings, deriving renovation needs and costs (per DIN 276) and enabling multi-year investment planning.
Construction TechPropTechSaaS
plancraft is an AI-powered operating system for European tradespeople and craft businesses that automates administrative work and provides management tools.
AI & Machine LearningConstruction TechFintechSaaSHamburg, DE
AlexanderRichardJulian
Co-investorsCreandumHeadlineHeadline Growth Management, LLCRealyze Ventures
Realyze Ventures is a venture capital firm investing in pre-seed to Series A technology companies across the real estate, construction, and energy sectors in pan-European markets.
CleantechClimate TechConstruction TechPropTech
Manfred Heid(Founder)
smino is a digital collaboration platform for construction teams that centralizes project data, task management, and team communication in real-time.
Construction TechEnterprise SoftwareFuture of WorkSaaSSwitzerland, CH
Co-investorsSerpentine VenturesZAKA VC
synavision offers monitoring and operational optimization software for building technical systems, analyzing plant data in real time to cut energy use, CO2 emissions, and operating costs in new and existing properties.
CleantechPropTechSaaS
wtec develops intelligent low-voltage lighting systems and sensor networks for commercial office spaces that deliver substantial energy savings while collecting data to support smart building applications and workplace wellness.
CleantechCloud ComputingConstruction TechEnterprise SoftwareIoT
XING provides recruiting tools, advertising solutions, and professional networking premium services for businesses to find talent, reach target audiences, and increase company visibility within a professional network environment.
Enterprise SoftwareFuture of WorkHR TechSaaSSocialHamburg, DE
Co-investorsAviv Venture CapitalBrandenburg KapitalCJH Family Office GmbHECONA AGFX VenturesIsaac Lidsky+3 more
Portfolio news
latest coverage across their companiesOkibo · roboticstomorrow.com · Feb 11, 2026
Frequently asked questions
- How many investments has BitStone Capital made?
- BitStone Capital has 22 tracked investments.
- What stage does BitStone Capital invest at?
- BitStone Capital invests at the Seed, Series A stages.
- What sectors does BitStone Capital focus on?
- BitStone Capital focuses on Cleantech, Climate Tech, Construction Tech, Enterprise Software, PropTech, SaaS.
- Where is BitStone Capital located?
- BitStone Capital is headquartered in Köln, DE.
- Who does BitStone Capital co-invest with?
- BitStone Capital most often shares deals with Brandenburg Kapital, Creandum, Entrepreneur First, among 24 tracked co-investors.
Media · Podcasts & interviews
featuring the teamWorauf achtet Kai Panitzki von BitStone Capital bevor er in StartUps investiert?
Konii - DIGITAL REAL ESTATE · Kai Panitzki
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