Realyze Ventures leads the round; Albert Achammer, CEO of ATP architekten ingenieure, and Ershad Jamil, former Chief Growth Officer at ServiceTitan (NASDAQ: TTAN), join as business angels.
Cologne/Berlin, September 14, 2026 – Phase0, a cloud-based software platform for tendering, billing, fee management and construction site management for small and mid-sized architecture and engineering firms, has closed a €2.6 million Seed extension round. Realyze Ventures, one of Europe’s leading sector-focused early-stage venture capital funds, is leading the round. Albert Achammer, CEO of ATP architekten ingenieure, and Ershad Jamil, former Chief Growth Officer at ServiceTitan (NASDAQ: TTAN), join as business angels. Existing investors include LocalGlobe and Atlantic.
The funding will go toward expanding Phase0’s AI agents, designed to automate time-consuming administrative tasks in architecture and engineering firms.
Modernising administrative work in architecture and engineering
Planning and design in architecture and engineering has become increasingly digital. Many of the administrative processes around it, however, are still shaped by manual workflows and legacy desktop software.
Phase0 addresses this gap with a browser-based platform that brings tendering, awarding and billing (AVA), fee proposals and invoicing under Germany’s HOAI framework, and site management together in one solution. Building on this, the AI features are integrated directly into existing workflows and work with the project data already managed in Phase0.
Already available is an AI Bill of Quantities, which generates bills of quantities in chat based on a firm’s own project data and checks detailed specification texts against German VOB requirements and DIN standards. Phase0’s AI Site Diary turns photos and voice messages sent via WhatsApp into reports, tickets and emails. Further AI features are intended to automate tasks around costs, billing, documentation and project management.
“Anyone managing million-euro projects shouldn’t be writing invoices in Word on a Sunday afternoon. We’ve onboarded more than 1,000 firms, and the pattern is the same everywhere. The tasks that eat up the most time – bills of quantities, meeting minutes, invoice checking – are exactly the ones AI can handle best,” says Matthäus Kerres, founder and managing director of Phase0.
Growth in a fragmented market
Phase0 currently addresses roughly 110,000 small and mid-sized architecture and engineering firms in Germany – a market still shaped by older Windows-based desktop software and manual processes. More than 1,000 firms already use Phase0, with 50 to 100 new customers joining every month.
Why Realyze Ventures invested
Phase0 is an example of how AI can create value when it is embedded directly into industry-specific software and existing workflows. The foundation for this is the cloud-based platform, which brings together core administrative and project-related processes in architecture and engineering firms. Building on this foundation, Phase0 is further expanding its AI agents.
Realyze Ventures will also support Phase0 in expanding its market access through its network in the construction and real estate industry.
“Phase0 brings AVA, HOAI and site management together on one browser-based platform and applies AI exactly where architecture and engineering firms lose the most time: bills of quantities, site diaries and invoice verification. Unlike a general-purpose chatbot, the AI has been trained on construction-specific data that is continuously updated and processed together with each firm’s own project data,” says Stefan Läufer, General Partner at Realyze Ventures, where he leads the fund’s focus on AI-driven SaaS in construction, architecture and skilled trades.
About Phase0
Phase0 is a cloud-based AVA, HOAI, and site management software for small and mid-sized architecture and engineering firms, with AI features built directly into the existing workflow. The platform includes, among other features, cost estimation, cost calculation, bill of quantities, tendering, awarding, invoice verification, change order management, HOAI proposals and invoices, time tracking, project controlling, and site documentation, covering the entire project lifecycle. The software is browser-based, requires no installation and is available across devices and operating systems.
Phase0 was founded in Berlin in 2020 and is used by more than 1,000 architecture and engineering firms across Germany, Austria and Switzerland.
More at www.phase0.com
About Realyze Ventures
Realyze Ventures is a European venture capital fund specialising in the construction and real estate sector and its intersection with the energy industry.
Built around a network of leading industry players, Realyze Ventures addresses key challenges such as process inefficiencies, decarbonisation and the shortage of skilled craftsmen – driving the industry’s transformation and strengthening the long-term competitiveness and resilience of real estate portfolios.
The Realyze Ventures ecosystem provides direct access to validated technologies and creates the framework to integrate them systematically into existing value chains and unlock their innovation potential. The ecosystem is led by an experienced management team that combines deep sector expertise with venture capital experience to identify scalable technologies at an early stage and generate sustainable value for investors.
