"Properties are like silent giants.

At the beginning of a project, we're quiet too - only then can we listen to them. What do properties need? Authenticity, a lively exchange, and asset managers who take a genuine interested in them."

Elisabeth Maria Kammermeier MBA

"There are two types of growth:

rising to meet a challenge, and personal growth. It's similar with real estate."

Olaf Jahn
Deputy Managing Director


Elisabeth Kammermeier studied business administration, and went on to complete an MBA at the universities of Cardiff, Wales and Hagen, Germany. Prior to founding Activ Consult Real Estate (acre) in 2001, her roles included Head of Public Relations at Vivico Real Estate, formerly Eisenbahnimmobilien Management, in Frankfurt am Main. There, she focused on strategic marketing for large-scale projects such as Europaviertel in Frankfurt am Main and Gleisdreieck in Berlin.

Since founding her own company, Elisabeth Maria Kammermeier has advised clients both in Germany and beyond on end-to-end real estate marketing, with a focus on positioning and strategic brand development. She is the author of Der Plan von der Stadt, a book on marketing urban properties, and co-author of a handbook on marketing and project development for real estate.
Elisabeth Maria Kammermeier is a certified trainer, and lectures at Biberach University of Applied Sciences, Real Estate Management Institute/EBS Business School in Wiesbaden, and Augsburg University of Applied Sciences.


Olaf Jahn, Deputy Managing Director at acre, began his career at Advanta Management Gesellschaft in 1992, and remained until 1997. There, he held joint responsibility for marketing and developing plans for mixed-use real estate, with a focus on retail properties. From 1997 to 2001, Olaf Jahn was Vice President of TrizecHahn Europa, where his role included purchasing, marketing and developing properties.

Since 2004, Olaf Jahn has been responsible for consulting projects involving retail properties for acre's clients both in Germany and beyond. He specialises in developing usage concepts, with a focus on space use and tenant mix plans. Moreover, he compiles ratings for retail properties and portfolios for clients in Germany and further afield. Currently, he advises companies on purchasing and developing real estate, creating strategic concepts for properties, and attracting tenants.