Willem Schilder

Valuator

T. 020 740 0531
T. 06 2670 8004
E. willem@semmakelaars.nl

Originally trained and working in the art world where creativity and communication are fundamental qualities, Willem switched to real estate to combine these with his business and commercial insights. After working as a branch manager for various offices for Meeùs in ‘t Gooi and Almere, he returned to his old love Amsterdam and was given the opportunity to set up a branch for Meeùs in Buitenveldert. After a number of successful years in Amsterdam South, he started SEM real estate agents in Amsterdam East in 2012, with Watergraafsmeer as a base.
As a senior real estate agent with more than 25 years of experience in both Amsterdam and the Metropolitan Region, he brings together all the knowledge for both purchases and sales, also in that combination, as well as valuation and consultancy.

Bart Bastiaansen

NVM realtor / valuator

T. 020 740 0531
E. bart@semmakelaars.nl

As a manager with a technical education and background, he earned his stripes in the business world. Driven by his passion for Amsterdam and its homes, he made the switch to real estate in 2005. He completed his internship with Willem, who was then working at Meeus in Buitenveldert. He then co-founded an office in IJburg together with, and on behalf of, Geraldine Hallie. There, he completed his training as a Registered Real Estate Agent (RMT) and served as office manager for four years. After that, he worked with Voogd for 15 years. In mid-2024, he made the move to SEM, where he reunited with his former mentor Willem.

Bart operates throughout the city, but is above all a seasoned IJburg and Zeeburg specialist, knowing every corner of this group of islands. Over the past 20 years, he has facilitated more than 1,500 property purchases and sales there. He is also active in the Houthavens area, where he has built up considerable expertise. He has a visible and tangible passion for his profession—something that comes naturally to him.

His love for the water and boating enables him to clearly convey the added value of waterfront living. This is how he earned his nickname, “the Sailing Real Estate Agent.” Notably, he consistently achieves strong sales results while never losing sight of the human aspect. This leads to smooth processes and satisfied buyers and sellers.

Fleur Kok

KRMT realtor i.t. / Commercial assistant

T. 020 740 0531
T. 06 2725 3137
E. fleur@semmakelaars.nl

As a KRMT real estate agent in training at SEM Makelaars, I focus strongly on communication. Having played hockey at the highest level in the Netherlands for a long time, I use my qualities such as drive, team orientation and perseverance to help customers as professionally as possible.

Koen Dorreboom

Mortgage advisor

T. 020 740 0531
E. info@semmakelaars.nl

As an independent and recognized financial advisor (EFA), he provides our customers with suitable mortgages, insurance and financial advice. What does he like about his work? That he guides and relieves people with the biggest purchase of their lives, helps them make their dreams come true, and that they can enjoy it.

Anne-Lieke de Jong

Commercial Inside Sales Representative

T. 020 740 0531
E. info@semmakelaars.nl

My name is Anne-Lieke de Jong, I’m 20 years old, and I’ve been working as a Commercial Inside Sales Representative since January. With great enthusiasm, I support the team with daily office operations. My ambition is to become a real estate agent in the future, and I see this role as a valuable opportunity to learn a lot and further develop myself within the real estate industry.

Danae de Groot

Commercial Inside Sales Representative

T. 020 740 0531
E. info@semmakelaars.nl

In her previous role at a property management company in Amsterdam, she gained experience in maintaining contact with a wide range of stakeholders, including tenants, property owners, and suppliers.

She values customer satisfaction highly and is a team player who enjoys working collaboratively to ensure smooth operations.