Our Know-How
Since 2016, Guillaume and Alexandre Denniel, two brothers united by a shared passion and at the head of this entirely family-run agency, have personally guided and advised buyers and sellers of historic properties.
Rooted in a family heritage, our passion for architectural and cultural patrimony naturally led us to pursue higher education closely connected to this field.
This early fascination with architecture and history enabled us, from a young age, to identify a clear need: to provide a comprehensive and bespoke service to both sellers and purchasers of heritage properties.
Accordingly, Guillaume Denniel is a jurist holding a Master’s degree in Notarial Law, a Master’s degree in Real Estate Law, and a diploma in Art History from the École du Louvre. Alexandre Denniel is a real estate law jurist holding a Master’s degree from Paris 1 Panthéon-Sorbonne University, together with a post-master’s qualification from the French Institute of Urban Planning.
Since 2016, we have applied this multidisciplinary expertise in advising and assisting buyers and sellers involved in complex heritage property transactions.
These complementary skills, perfectly tailored to heritage consultancy and expertise, enable us to meet the expectations of the most demanding clients, whether sellers or purchasers of properties involving complex issues, throughout every stage of the transaction:
Our expertise, experience, and exacting standards have enabled us to oversee each year some of the most remarkable heritage property transactions in France. As dedicated custodians of heritage, we deliberately choose to represent only a limited number of properties, allowing us today to include in our portfolio only those estates that genuinely inspire us and for which we already know there exists a discerning potential clientele.
Our sustained investment in the development of modern communication strategies has also led us to become the leading heritage real estate account on Instagram in France, with more than 100,000 followers.
Furthermore, our personal commitment to the preservation and rescue of endangered heritage properties means that each year one or more private laureates of the Mission Bern Heritage Lottery have acquired their properties through Denniel Immobilier (including three of the thirty-nine private laureates in 2023, representing nearly 10%).
Today, no property is too exceptional for the clients who seek to acquire through our agency, nor too complex for our expertise.
Rooted in a family heritage, our passion for architectural and cultural patrimony naturally led us to pursue higher education closely connected to this field.
This early fascination with architecture and history enabled us, from a young age, to identify a clear need: to provide a comprehensive and bespoke service to both sellers and purchasers of heritage properties.
Accordingly, Guillaume Denniel is a jurist holding a Master’s degree in Notarial Law, a Master’s degree in Real Estate Law, and a diploma in Art History from the École du Louvre. Alexandre Denniel is a real estate law jurist holding a Master’s degree from Paris 1 Panthéon-Sorbonne University, together with a post-master’s qualification from the French Institute of Urban Planning.
Since 2016, we have applied this multidisciplinary expertise in advising and assisting buyers and sellers involved in complex heritage property transactions.
These complementary skills, perfectly tailored to heritage consultancy and expertise, enable us to meet the expectations of the most demanding clients, whether sellers or purchasers of properties involving complex issues, throughout every stage of the transaction:
- Precise analysis and expert assessment of properties in all their dimensions, together with the anticipation and resolution of legal, contractual, regulatory, or technical issues likely to create uncertainty or jeopardise the successful completion of a transaction.
- Enhancement of the historical and architectural value of properties through archival research whenever justified. We have, on several occasions, uncovered documents of royal provenance that proved decisive in bringing transactions to completion. We also produce detailed descriptive dossiers presenting the history and architectural significance of each property offered for sale.
- Implementation of tailored sales and communication strategies. The marketing of exceptional properties has evolved considerably in recent years with the emergence of new communication tools whose effective use is now essential in reaching the most qualified buyers. Each property therefore requires a carefully defined strategy and the selection of the most appropriate communication channels, including the possibility of conducting highly confidential sales.
- In this respect, social media — and Instagram in particular — has become an especially effective means of reaching certain categories of buyers who no longer rely on traditional communication channels, a trend that is even more pronounced among leading international clientele.
- Personalised guidance and successful completion of transactions. Heritage property transactions frequently involve complex legal and contractual considerations requiring experience, tact, precision, and rigorous oversight throughout the sales process. By personally supervising each transaction with the utmost diligence and professionalism, we ensure that our sales proceed smoothly and securely, without legal uncertainty.
Our expertise, experience, and exacting standards have enabled us to oversee each year some of the most remarkable heritage property transactions in France. As dedicated custodians of heritage, we deliberately choose to represent only a limited number of properties, allowing us today to include in our portfolio only those estates that genuinely inspire us and for which we already know there exists a discerning potential clientele.
Our sustained investment in the development of modern communication strategies has also led us to become the leading heritage real estate account on Instagram in France, with more than 100,000 followers.
Furthermore, our personal commitment to the preservation and rescue of endangered heritage properties means that each year one or more private laureates of the Mission Bern Heritage Lottery have acquired their properties through Denniel Immobilier (including three of the thirty-nine private laureates in 2023, representing nearly 10%).
Today, no property is too exceptional for the clients who seek to acquire through our agency, nor too complex for our expertise.
Our Tailored Services
DENNIEL IMMOBILIER - Antiquaires en Immeubles (“Antiquarians of Real Estate”), offers its expertise to assist you in the sale and acquisition of heritage properties, including:
Sales Representation & Buyer Sourcing
Our ability to highlight the architectural, historical, and artistic qualities of a property, combined with the targeted dissemination of listings across a carefully selected range of specialist platforms, enables us to maximise exposure to discerning buyers seeking exceptional and highly specific properties.
Property Search & Buyer Advisory Services
Thanks to our in-depth knowledge of the heritage property market, our extensive network, and our comprehensive documentation resources within this field, we are uniquely positioned to provide clients with a carefully curated selection of properties precisely aligned with their expectations.
Our services include:
This bespoke property search service guarantees complete discretion throughout your search for a heritage property.
Professional licence authorising real estate transactions and business asset transfers:
CPI No. 2902 2016 000 006 581
The company does not receive or hold any funds, securities, or assets in connection with the operations referred to in Article 1 of Law No. 70-9 of 2 January 1970.
Licence valid until: 6 March 2028
Issued by: CCI Bretagne Ouest on 7 March 2025
Licence holder: SAS DENNIEL IMMOBILIER
Legal representative: Guillaume Denniel, President
Legal representative: Alexandre Denniel, Managing Director
- Historic residences (manors, châteaux, private estates, period houses…)
- Properties with land (farms, country estates, domains…)
- Properties subject to specific legal frameworks (listed historic monuments, agricultural land, coastal law regulations…)
- Properties distinguished by particular artistic or architectural qualities (architect-designed houses, interiors created by renowned decorators…)
Sales Representation & Buyer Sourcing
Our ability to highlight the architectural, historical, and artistic qualities of a property, combined with the targeted dissemination of listings across a carefully selected range of specialist platforms, enables us to maximise exposure to discerning buyers seeking exceptional and highly specific properties.
Property Search & Buyer Advisory Services
Thanks to our in-depth knowledge of the heritage property market, our extensive network, and our comprehensive documentation resources within this field, we are uniquely positioned to provide clients with a carefully curated selection of properties precisely aligned with their expectations.
Our services include:
- A detailed assessment of your requirements
- Property searches conducted across the entire market, extending far beyond our own portfolio
- Direct liaison with vendors
- Organisation of private viewings
- Legal guidance throughout the acquisition process
This bespoke property search service guarantees complete discretion throughout your search for a heritage property.
Professional licence authorising real estate transactions and business asset transfers:
CPI No. 2902 2016 000 006 581
The company does not receive or hold any funds, securities, or assets in connection with the operations referred to in Article 1 of Law No. 70-9 of 2 January 1970.
Licence valid until: 6 March 2028
Issued by: CCI Bretagne Ouest on 7 March 2025
Licence holder: SAS DENNIEL IMMOBILIER
Legal representative: Guillaume Denniel, President
Legal representative: Alexandre Denniel, Managing Director
Maximum fees inclusive of VAT, and calculation method :
Maximum fees payable by the seller, unless otherwise specified in the mandate agreement or marketing materials.
- Seller’s Net Price
- Up to and including €700,000
- Between €700,000 and €5 million inclusive
- Between €5 million and €15 million inclusive
- Above €15 million
- Maximum Fees (incl. VAT)
- €50,000
- 7.2% of the seller’s net sale price
- 6% of the seller’s net sale price
- 5% of the seller’s net sale price
SASDENNIEL IMMOBILIER with a capital of 5000 € • SIRET 81914733100014 • VAT FR64819147331 • Professional Card 2902 2016 000 006 581 issued by CCI de Bretagne Ouest 1 Pl. du 19EME Ri 29200 Brest • The company shall not receive or hold any funds, bills or securities other than those representing its remuneration or commission