Madaster Crowdfunding: 100+ Investors Back Circular Construction

Blogs 2 apr 2026

Madaster’s latest crowdfunding campaign invited investors to support our data platform for circular construction, designed to give buildings a digital material identity and enable better decisions on carbon, compliance, and resource use.

We’re grateful for the support, with the campaign closing overfunded and backed by more than 105 investors.

We reached 88% with over two weeks remaining, moved through 94-95% in the final days, and passed 103% as the campaign closed.

This level of support reflects a clear direction for the built environment: a shift toward reliable material data, where materials remain in use, waste is reduced, and environmental impact is measurable.

Why crowdfunding

From the outset, the “By the Crowd, for the Crowd” campaign was intentionally structured as a crowdfunding initiative.

Madaster operates at the intersection of multiple stakeholders: architects, developers, asset owners, manufacturers, and policymakers. Each of these groups depends on better material data, yet no single party can solve the challenge alone.

Crowdfunding allowed us to merge these industries under one umbrella.

Instead of concentrating ownership with a small group of investors, we opened participation to the people directly experiencing the problem. The result is a broader base of stakeholders who are not only financially invested, but operationally aligned with our mission as a business.

It also reflects the nature of the platform itself.

If buildings are shared resources, then the systems that manage them should be shaped collectively.

Backed by the people facing the problem

The campaign attracted a broad mix of investors across the built environment, each with different roles, but similar constraints.

Across projects, portfolios, and reporting frameworks, there is limited visibility into what buildings are made of. Material data is often fragmented across tools, locked in documents, or lost over time.

Without a structured and accessible view of materials, it becomes difficult to:

measure and reduce embodied carbon across the lifecycle
comply with frameworks such as CSRD and EU Taxonomy
assess material availability, risk, and future value
plan for reuse, deconstruction, and circular strategies

We started Madaster in 2017 to fill this gap.

Making the vision operational

Nearly a decade in, Madaster has evolved from a concept into a platform that enables material transparency at scale.

We are proud of our numbers today:

active in 7 countries
used across 18,000+ buildings
supporting 1,800+ professionals
generating €2M+ in recurring annual revenue

At its core, Madaster functions as a register for building materials. It structures, stores, and connects material data across the lifecycle of a building.

This creates a shared reference point across stakeholders, enabling better decisions at every stage, from design and construction, to operation and eventual reuse.

In projects using Madaster, this visibility translates into measurable CO₂ reductions. When materials have an identity, they can be tracked, assessed, and retained within the system. This is how material waste and embodied carbon are reduced in practice, aligning with Europe’s Net Zero targets.

Material transparency as the gold standard

The circular and sustainable construction market has grown from €346B in 2020 to €618B by 2026. At the same time, regulatory frameworks are redefining expectations around data and accountability.

CSRD is expanding requirements for environmental disclosure across portfolios.
EU Taxonomy is linking sustainability performance to financial outcomes.
Digital Product Passports are introducing standardized product-level data.

For developers and asset owners, this changes how buildings are evaluated and financed. For manufacturers, it changes how products are documented and brought to market.

Across the industry, material data is becoming a requirement that must be structured, maintained, and accessible over time.

At the same time, the traditional linear model – extract, build, discard – is no longer viable at scale. Not only from an environmental perspective, but from a financial and regulatory one.

A circular approach requires a different foundation:

materials must be identifiable and traceable
value must be retained beyond first use
decisions must be informed by reliable data

This is where the concept of buildings as material banks becomes practical rather than theoretical.

The next phase of growth

We now have an exciting opportunity to expand both the depth and reach of the platform. There are our key focus areas post-crowdfunding:

Product: Further development of data models and analytics to provide deeper insights into materials, embodied carbon, and circularity across buildings and portfolios.
Expansion: Growth in existing markets and entry into regions where regulation and reporting requirements are accelerating demand for structured material data.
Ecosystem: Strengthening integrations with manufacturers, data providers, and design tools to improve data quality, interoperability, and usability.

The goal is not only to collect data, but to make it actionable across workflows.

Built by the crowd, for the built environment

We all share the built environment.

This investment round reflects that shared responsibility, not only in how we finance the transition, but in how we participate in it.

Thank you to our clients, partners, and network and thank you to everyone backing this next phase.