Who is behind REINVENTIS?

For us, strategy consulting means quality over quantity.

• Personal support: You work with experienced sparring partners on an equal footing—not with changing project teams.
• Customized solution architectures: Each mandate receives its own tailor-made design—no standard programs.
• Calm, structured collaboration: We create clarity before we pick up the pace.
• Measurable impact: Decisions that translate into stability, value growth, and future viability.

Experience that provides orientation

Our expertise is the result of many years of experience in demanding contexts:

• Supporting business owners, management, and leadership teams during strategic clarification, development, and transformation phases.
• Working with entrepreneurial families, family offices, and real estate asset owners on long-term visions for the future, utilization concepts, and value development strategies.
• Projects in highly complex environments: market upheavals, digitalization, succession, portfolio realignment, ESG requirements.

We understand the tensions between family and business, responsibility and returns, continuity and change—and help translate them into viable decisions.

A network that amplifies impact

A proven network of experts

Where appropriate, we work with a curated network of specialized partners and our clients' contacts—including in the following areas:

• Law & Taxes
• Financing & Structuring
• Architecture & Urban Planning
• ESG & Sustainability
• AI, technology & digitalization

REINVENTIS® thus remains the central strategic authority—and expands its technical depth with selected specialist expertise as needed.

Who we are the right partner for as a team

We are the ideal sparring partner for people who:

• Bear responsibility for companies, organizations, or real estate assets,
• Seeking clarity – instead of short-term buzzwords,
• Making decisions that have an impact beyond the current quarter
• Place value on personal support, confidentiality, and substance.

We support those for whom shaping the future is a conscious decision.

Our stance

We support people who want to shape the future.

Not loud. Not hectic. But conscious, structured, and effective. 

REINVENTIS stands for quality, depth, attitude—and for the conviction that continuous development is one of the most valuable decisions you can make.

Combined expertise, practical experience, and genuine partnership

Erik A. Leonavicius

, Business Administration (FH) Real Estate Economist (ebs)
Master of Business with AI (MBAI®) in progress

Since 2006
Owner and Managing Director of REINVENTIS, Munich
Lecturer at the universities of Munich and Erding, as well as at the SCE – Strascheg Center for Entrepreneurship, Munich

2005
Postgraduate studies: Real estate economics, real estate life cycle management, and real estate marketing

1996 to 2005
National and international project experience with leading consulting organizations such as Accenture, PricewaterhouseCoopers, Dr. Kaub Consult, and Pannell Kerr Forster (PKF Hotelexperts). Cross-industry experience in theory and practice in projects with medium-sized companies and the top 100 listed companies in Europe.
Focus areas: Analysis, development, and implementation of innovation projects to increase corporate performance.

1994 to 1998
Studied economics and tourism in Munich, London, and New York.
Focus: International hospitality management and strategic marketing.

Martin Horniak

Diplom-Kaufmann

Since 2025
REINVENTIS
Freelance employee

Since 2008
Real estate consulting and controlling
Klaus Leven GmbH, Munich
Independent real estate agent in Munich

2001 to 2008
Financial Consultant, MLP Finanzdienstleistungen AG
Financial Advisor at FDK Financial Services GmbH – a company of the Stadtsparkasse Köln financial group

1994 to 2001
Studied business administration and finance in Trier
Focus areas: money, credit, currency, and business taxation

Our curated network of experts

Specialized. Handpicked. Effective.

REINVENTIS works on issues that shape the future – where decisions carry weight, responsibility is great, and complexity is increasing.

At our customers' request, we selectively engage experts whose quality is assured:

• only if their expertise creates genuine added value.
• Only where expertise has an impact.
• never to generate mass

Our network encompasses expertise in:

• Strategy & Organizational Development
• Architecture &
• usage concepts
• Finance, Legal & Tax
• Real estate valuation & ESG
• Technology, Digitalization & AI
• Communication, Brand & Identity

REINVENTIS thus remains a central strategic entity—reinforced by precisely selected specialist expertise without diluting its boutique structure.

Our own AI employees, trained by us

Structured. Thorough. Fast.

And above all: reliable, compliant with data protection regulations, and tailored precisely to our strategy consulting services. We work with AI assistants developed in-house, which we continuously train, refine, and manage responsibly within a protected environment.

Our AI employees are:

• GDPR compliant
• Compliant with the European AI Act
• specially trained in our topics, language, and attitude
• Fully documented, transparent, and auditable

Result:

• More clarity in processes.
• More depth in analyses.
• Faster implementation.

Our AI does not replace humans—it enhances excellent strategy consulting.

Industry and client experience (selection, without naming names)

We work across all industries—anywhere where responsibility, values, and sustainability are paramount, including: