We love
real estate development
We love
real estate
development
About Us –
Loosen & de Graaf Investment Partners
We focus on acquiring residential properties with development potential, ranging from 20 to 200 units. Our goal is to achieve sustainable value appreciation through modern, user-oriented living concepts—from new construction and vertical extensions to renovation and repurposing.
We have an in-depth understanding of our markets, their challenges, and their opportunities. We leverage comprehensive expertise, many years of experience, and a well-established network of top-tier partners, which is essential for the efficient execution of projects from acquisition to completion. Our independence ensures high quality standards and facilitates rapid decision-making and problem-solving.
All core tasks along the value chain—from purchasing, technical and commercial property management, and asset management to sales—are handled by our group of approximately 25 employees. Architectural and construction services are provided by a long-standing network of regional partners.
In doing so, we not only enhance the value of each property but also create tangible, sustainable added value for all stakeholders: from investors, employees, and financing partners to current and future tenants.
- (01)Highly qualified employees25+
- (02)Residential and commercial units under management2,000+
- (03)Annual acquisitions of existing properties€30m+
- (04)Real Estate Development13+ years
"Even from the stones that are placed in your path, you can build something beautiful."
360° Real Estate Management
For us, real estate management means holistic expertise for every single project. To achieve this, Loosen & de Graaf bundles all value-added functions under one roof, relies on full-service management, and maximizes the potential of every project throughout the entire real estate lifecycle.
Our services include:
- Real Estate Development
- Asset Management
- Property Management
- Facility Management
- Transaction Management

Our company history

We, Xavier E.R. de Graaf and Maximilian Paul Loosen, met while studying at RWTH Aachen University. Driven by our own personal experience with the shortage of housing, we began focusing on renovating apartments in need of repair during our time at university.

Acquisition of our first shared apartment in Aachen. Subsequent renovation, largely completed ourselves.

Official company founding to professionalize the business. First office: our student apartment. A construction contractor from Aachen provides our first funding to acquire larger projects.

First employee
First "real" office: Move to the Karmeliterhöfe in Aachen
Focus on the acquisition, renovation, and trading of condominiums

Acquisition of the first multi-family property
First time purchasing over 100 residential units in a single year

We are becoming a training company
Establishment of the corporate advisory board

Relocation to our own office building: Wilhelmstraße 16, Aachen
Growth to 15 employees

First portfolio deal involving 350 residential units
Acquisition of the first office property and growth to 20 employees

To this day, we continue to successfully develop and realize real estate projects in the Aachen–Cologne–Düsseldorf and Frankfurt metropolitan regions.
An experienced advisory board has been supporting Loosen & de Graaf with strategic and operational matters since 2019.

Christian W. Rother

Prof. Dr. Bertram Steininger

Thomas Schulze-Wischeler

Prof. Dr. Willi Linkens

Together with our partners, we create long-term value.




















































