Berlin-based WALLROUND Raises €4.2 Million Funding

The round was led by early-stage venture firm Revent, with participation from GGF and continued backing from existing investor Vonovia, Europe’s largest landlord.

Founded in 2024, WALLROUND set out to modernize the renovation sector, addressing its outdated and fragmented processes, especially within private landlord and institutional investor property portfolios. The company provides a full-stack renovation service, integrating property analysis, planning, procurement, construction, and quality assurance into a single, tech-enabled platform.

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The newly raised funds will support WALLROUND’s expansion across Germany, the automation of planning workflows, and the growth of its team in technology, operations, and product development. Additionally, the company announced the creation of an advisory board, featuring Kai Enders—former DACH CEO of Engel & Völkers, founder of GvFC Immobilien, and long-time president of the German Franchise Association.

“We’ve watched the energy renovation space for a long time. But WALLROUND is the first team we’ve seen to combine an end-to-end tech solution with operational excellence. This is what the future of renovations looks like,” said Dr Lauren Lentz, General Partner at Revent.

As real estate owners face growing pressure to cut emissions, demand for energy-efficient upgrades is at an all-time high. However, many renovation processes remain manual, slow, and costly. WALLROUND’s platform streamlines these renovations, allowing landlords to decarbonize their properties, enhance profitability, and stay ahead of regulatory requirements.

“Our goal is to simplify renovations to the point that anyone can decarbonise their building – profitably,” said Lukas Steinhilber, CEO and Co-founder of WALLROUND. “We’re not just offering a service; we’re building a scalable system that can meet the massive demand ahead.”

WALLROUND targets a largely underserved market segment: private landlords and institutional investors, who together own a substantial share of Germany’s residential housing. By consolidating and digitizing renovation processes, the company seeks to eliminate inefficiencies that hinder the sector’s transition to energy-efficient properties.

“Building renovation is an opportunity to create meaningful impact while building a massive business,” said Friedrich Neuman, Partner at GGF. “WALLROUND’s vision to build Europe’s largest renovation franchise comes at a pivotal moment, helping landlords and investors avoid stranded assets. Their full-stack approach, with software at its core, unlocks significant efficiencies and sets the stage for WALLROUND to accelerate the built environment’s energy transition.”

Investors in this round include Revent, GGF, Vonovia, KVL Group, Founders Factory, S&B Capital, Micro-VC Superangels, and angel investor Marc Müller. As energy-efficient renovations become increasingly strategic across Europe, WALLROUND is positioning itself to lead the sector with a model that combines scalable technology with hands-on execution.

About WALLROUND

Millions of residential and office buildings in Europe await energy-efficient renovations, and WALLROUND is ready to take on the challenge. From first contact to project completion, we streamline and digitize the entire process, modernizing a traditionally manual construction and trades sector to protect energy and the climate.