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About us


Kennedylaan 9e, 2324 ER Leiden

Meet our team in Leiden

Jean Kierkels foto 2 Jean Kierkels
Jean Kierkels
Real Estate Agency and appraisals

Jean has been active on the housing market in the Leiden region since the 1990s and in 1999 he was sworn in as a broker/appraiser by the District Court just before the broker's oath and title were abolished. Brokerage is in his blood and he is committed to his clients in the best possible way. Whether it concerns the supervision of a purchase or sale or an appraisal. His motto: Brokerage is not a 9-to-5 job, it is a "way of life"; you are a real estate agent 24/7! Even outside office hours and during the weekends, he is often in charge of his clients. His efforts are highly appreciated which earns him great reviews. Since 2018 he has been working at the DOEN branch in Leiden, together with Paul Rats (the founder of DOEN NVM Makelaars). From his beautiful office on the Kennedylaan in Leiden Zuidwest, he and the enthusiastic Leiden team will be happy to be of service. In his spare time, Jean likes to get behind the controls of a single-engine sports plane as a hobby pilot, but he also enjoys travelling, musicals, a visit to the cinema or an evening out for dinner.

Kelvin Colsen foto 2 Kelvin Colsen
Kelvin Colsen
Real Estate Agency

Kelvin has been active in the world of real estate and mortgages since the early 90s. He is always looking for the right solution for his clients and finds it important that the client goes (or moves) home with a satisfied feeling. Kelvin's strength is his flexibility, drive, expertise and sense of purpose. Kelvin looks forward to working for you.

Sydney Arends foto 2 Sydney Arends
Sydney Arends
Jordi Gijsbertsen foto 2 Jordi Gijsbertsen
Jordi Gijsbertsen
Paul H.C. Rats foto 2 Paul H.C. Rats
Paul H.C. Rats
Real Estate Agency and Investments

Paul is the founder of DOEN NVM Makelaars. Paul is a real entrepreneur and always sees opportunities everywhere. With his cheerful character and positive attitude, he is a motivator and, as a real people person, very accessible to everyone. Real estate agency is his passion and private and commercial real estate is his specialty. Especially because of the diversity of real estate but certainly also because of the clients themselves, Paul feels right at home in real estate. Paul loves France, loves skiing, being on the water and a good glass of wine.

[ { "address": "Kennedylaan 9e", "zipCode": "2324 ER", "city": "Leiden" } ]

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Direct contact?

Ingrid G.E. de Groot

Call 070 - 440 00 55
also available via WhatsApp at
06 253 520 20