Fundraising Fox
BitStone Capital
Venture capitalKöln · Seed–Series A · 13 people tracked
Find your way into BitStone Capital
1,145 people in our graph share verified history with the BitStone Capital team — schools, employers, funds. One of them is your warm intro.
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.
What founders say
No founder feedback on BitStone Capital yet.
Team · 13 people
from the firm's website & curated & public directories
What they invest in
from 22 of 27 portfolio companiesPropTech ×13SaaS ×10AI & Machine Learning ×8Construction Tech ×8Cleantech ×7Climate Tech ×5Enterprise Software ×5Cloud Computing ×4
HQs:Germany×16Switzerland×1United States×1
Who they back
founder profiles across 8 portfolio companiesFounding team size:solo founder×42 founders×23 founders×14+ founders×1
Where their founders studiedfrom 11 founders with education data
Technische Universität Berlin ×4Cologne University of Applied Sciences ×2
What their founders studiedfrom 13 founders with field-of-study data
Engineering ×4Business & Management ×2Computer Science ×2Finance & Accounting ×2
Investments · 27 tracked
founders shown can be your intro pathBy year:2026 · 12024 · 12022 · 42021 · 22020 · 210 dated
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
Felix Dorner(Founder)in
Co-investorsPhoenix Contact Innovation VenturesWorld Fund
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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-investorsAENUEntrepreneur FirstHAWKTAILLa FamigliaNorrsken VCfirstminute capital+2 more
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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
Doozer is a SaaS platform for managing the renovation of vacant apartments, targeting professional residential property owners with roughly 3,500+ units.
Construction TechPropTechSaaS
Co-investorsFuture Energy Ventures
encosa plans, installs, and operates battery storage systems for businesses, optimizing electricity use behind the meter (peak shaving, self-consumption, reduced grid fees) while also trading available storage capacity on energy, capacity, and intraday markets.
CleantechClimate TechEnergy
Sascha KoberstaedtSebastian Becker
Co-investorsFirst Momentum
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)inSimon Wagenknecht(Chief Engineering Officer & Co-Founder)inNina Germanus(CEO & Co-Founder)inPaul Hock(CEO & Co-Founder)inThomas Filkorn(Chief Revenue Officer & Co-Founder)inChris Menzel(Chief Innovation Officer)in
Co-investorsBrandenburg KapitalVireo VenturesXAnge
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
Johannes Mailänder(Founder)in
Co-investorsBetter Ventures Central LlcVireo Ventures
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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-investorsBONVENTUREDeepTech & Climate Fonds10x FoundersCanaan PartnersNew Enterprise Associates (NEA)Redpoint Ventures
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 VenturesInnovation Endeavors
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 TechPropTechSaaSFreiburg im Breisgau, DE
Thorsten Harig(Co-Founder und CEO)inHendrik Seibel(Co-Founder und CEO)in
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 VenturesHTGF
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)in
smino is a collaboration platform designed for construction teams to centralize project data, manage tasks and defects, and streamline real-time communication on job sites.
Construction TechEnterprise SoftwareFuture of WorkPropTechSaaSSwitzerland, 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
VoiceLine builds a voice- and AI-powered tool that captures field information and reduces manual admin work, aimed at replacing clunky systems and manual data entry for sales teams.
AI & Machine LearningEnterprise SoftwareSaaSSales TechFrankfurt, DE
Nicolas Höflinger(Co-founder & CEO)inSebastian Pinkas(Co-founder & CTO)inNicolas Kübler(Chief Product Officer)in
Co-investorsCavalry VenturesNAPPeakSCALEHOUSE Capital ManagementVenture StarsAlstin Capital+1 more
WTEC provides smart building solutions for educational facilities, combining low-voltage LED lighting control, real-time sensor networks, and indoor air quality monitoring to reduce energy consumption and improve student learning environments.
CleantechCloud ComputingConstruction TechEdTechEnterprise 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
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AeditiveHotelbirdonyoPlaybook®PropertyScout
Portfolio news
latest coverage across their companiesVoiceLine · thesaasnews.com · Feb 24, 2026
Frequently asked questions
- How many investments has BitStone Capital made?
- BitStone Capital has 27 tracked investments, including 1 dated in the last 24 months.
- 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 31 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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