The Denniel brothers, heritage property specialists, personally lend their expertise to every stage in the sale of each historic property entrusted to them.

GUILLAUME DENNIEL

A specialist in notarial and real estate law, he brings rigorous expertise to complex heritage matters, combining technical precision with a keen sense of legal certainty. His methodical and structured approach is grounded in a refined understanding of the mechanisms governing the transfer, enhancement, and protection of assets.

In parallel, as an art historian trained at the prestigious École du Louvre, he has cultivated a discerning and sensitive appreciation of works of art and cultural heritage, lending his professional profile a distinctive humanistic and aesthetic dimension.

ALEXANDRE DENNIEL

A law graduate of Sorbonne University, he draws upon an outstanding academic background to address legal matters with both rigor and discernment. His expertise is distinguished by a strong command of fundamental legal principles, combined with a precise and methodical analytical approach.

A graduate in urban planning from the Institut Français d’Urbanisme, he complements this foundation with an in-depth understanding of territorial challenges and urban dynamics, bringing together legal expertise and forward-looking vision.

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Our Know-How

Since 2016, Guillaume and Alexandre Denniel, two brothers driven by a shared passion and at the head of this wholly family-run agency, have personally advised and guided buyers and sellers of historic properties :
  • Expertise: Between them, they hold five academic degrees spanning Notarial Law, Real Estate Law, Art History, studies at the École du Louvre, and Urban Planning, together with eight years of experience in the field of historic real estate.
  • Know-how: Precise analysis and expert assessment of properties; enhancement of their historical and architectural value; development of tailored sales and communication strategies; personalised guidance through every stage of the transaction to its successful completion.
  • Achievements: Each year, the agency oversees some of France’s most remarkable heritage property transactions; with more than 100,000 followers on Instagram, it is the leading heritage real estate account in France; moreover, three of the thirty-nine private laureates of the 2023 Mission Bern Heritage Lottery acquired their properties through Denniel Immobilier.

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