# Klaus Freiberg

> Klaus Freiberg is a seed investor backing Construction. See 1 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Location: Münster, Germany
- Total investments: 1
- Last investment: Apr 2020
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/klaus-freiberg-23964015

Klaus Freiberg is a seed investor in Münster focused on Construction and Industrial Engineering. Klaus Freiberg is the Founder and Managing Director at 1648 Factory.

## Contacts

5 contacts available for Klaus Freiberg: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/klaus-freiberg?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Construction | 1 | 100% |
| Industrial Engineering | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| ecoworks | Ecoworks specializes in climate-neutral renovations and modernizations for apartment buildings. The company uses industrial pre-fabrication, digital processes, and highly efficient energy systems to modernize multi-family houses with up to four floors within a few weeks. | $5.6M | Seed | Apr 09, 2020 | https://www.ecoworks.tech/ |

1 of 1 investments shown.

## Co-investors
- [ALP.X Group](https://shizune.co/investors/profile/alpx-group) — VC Fund, 1 deal together
- [kopa ventures](https://shizune.co/investors/profile/kopa-ventures) — VC Fund, 1 deal together
- [PT1](https://shizune.co/investors/profile/proptech1-ventures) — VC Fund, 1 deal together
- [Surplus Invest](https://shizune.co/investors/profile/surplus-invest-gmbh) — VC Fund, 1 deal together
- [kopa ventures](https://shizune.co/investors/profile/wi-venture) — VC Fund, 1 deal together
- [Wi Ventures](https://shizune.co/investors/profile/wi-ventures) — VC Fund, 1 deal together

## Similar investors

### Similar industry
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### Similar stage
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### Similar country
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- [IBB Ventures](https://shizune.co/investors/profile/ibb) — VC Fund

## Featured in investor lists
- [Proptech Angel Investors in Germany](https://shizune.co/investors/proptech-angel-investors-germany)
- [Real Estate Angel Investors in Germany](https://shizune.co/investors/real-estate-angel-investors-germany)
- [Construction Angel Investors in Germany](https://shizune.co/investors/construction-angel-investors-germany)

## FAQ

### What does Klaus Freiberg invest in?

Klaus Freiberg invests primarily in Construction and Industrial Engineering startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Germany. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Klaus Freiberg?

Public channels for Klaus Freiberg include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Klaus Freiberg last invest?

The most recent investment recorded for Klaus Freiberg closed in Apr 2020. Shizune tracks 1 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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