
Meet the Greyson Commercial Team
We support companies throughout the office leasing process. We combine in-depth market knowledge, strong negotiation expertise, and a tailored approach to every project.














For many years, he has supported companies in the office leasing process, representing tenants and helping them secure office space that aligns with their business objectives. His extensive knowledge of the commercial real estate market and proven negotiation experience enable him to achieve favourable lease terms for the companies he represents.
Maciej Siemaszko
Leasing Manager/Partner
Janusz Melaniuk
Leasing Manager/Partner
He has been involved in numerous business and investment projects throughout his career. Combining extensive business experience with a strong understanding of the commercial real estate market, he helps companies identify solutions that support growth and long-term strategic objectives. An experienced and meticulous negotiator.
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