Dennis Koeslag designs interiors for hospitality concepts, boutiques and private homes.
Timeless, character-driven spaces — rooted in personality, place and material.
Always personal and always distinctive.
interior
architecture
design
Fascinated by spaces from an early age, Dennis was always rearranging furniture, experimenting with colour and rethinking the placement of objects and décor. What started as childhood curiosity grew into a lifelong passion.
Inspired by architecture, travel, the surroundings of projects and a rich palette of materials, Dennis has spent over 20 years designing interiors for a wide range of projects — from hospitality spaces and boutiques to the renovation of elegant private homes.
Dennis Koeslag graduated from the Artemis Academy in Amsterdam and the Willem de Kooning Academy in Rotterdam, where he developed a strong and refined foundation in interior architecture.
about dennis
Residential
Private residences hold a special place in Dennis’ work. Each home is shaped around the people who live there — their personality, taste and way of life.
With a strong sense of proportion, material and detail, Dennis creates layered interiors that feel personal and distinctive, balancing timeless elegance with unexpected elements. The result is a home with character — designed to be lived in, loved and enjoyed for years to come.
what i do
Every project starts with a conversation. By understanding your wishes, ideas and references, a clear direction is defined — not a fixed plan, but a thoughtful framework.
From there, the design is refined step by step. Dennis remains personally involved throughout the entire process, guiding choices and safeguarding the concept — while you, as the client, always stay in control.
(Unless you prefer a carte blanche — which is equally welcome.)
Dennis designs interiors that feel personal, layered and timeless. His strength lies in understanding a space — and translating it into an interior that feels authentic to both place and people.
Inspired by architecture, travel and materiality, his work balances character and restraint. Each design is distinctive, yet never driven by trends.
how i work
hospitality
Hospitality holds a special place in Dennis’ work. From boutique hotels and restaurants to vibrant (resto) bars — these spaces are essential to the joy of everyday life.
Combining a pragmatic mindset with a strong design vision, Dennis has created hospitality concepts that are recognised for both atmosphere and experience.
From rotterdam
with love
Dennis lives and works in the vibrant heart of Rotterdam, in the enchanting and historic Scheepvaartkwartier. Here, he recently transformed the upper floors of a listed building into an elegant and inspiring home with office — which also serves as a refined showroom.
In the loop
Follow on Instagram to stay updated on Dennis’ latest projects and see content you will LOVE.
Contact
Eager to explore a collaboration? Kindly share your details in the form and I will reach out to you shortly. You can also contact me directly via info@dennis-interieurarchitect.nl.
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