Top Family Offices in Rennes 2026

Key Facts About Family Offices in Rennes

• At least 8 family offices and wealth management firms operate in the Rennes metro area, serving ultra-high-net-worth (UHNW) families in Brittany.
• Only 2 offices appear in the main French family office directory for Rennes (Marquis Family Office and iKer Family Office), but several more firms deliver family-office-level services.
• Cyrus Herez holds the largest group-wide assets under management (AUM) at €22B+. This figure reflects its national network of 25+ offices, not the Rennes branch alone.
• Rezult Family Office advises on over €100M in assets, making it one of the few locally based firms to disclose AUM.
• Entry thresholds start at roughly €10M in patrimoine, though some offices require €100M or more.
• Multi-family offices (MFOs) lead the market. Groupe Le Duff is the only known single family office (SFO) in the city.
• Rennes offices increasingly focus on real estate restructuring, private equity, and succession planning for Breton entrepreneurial families.

Family Office Rennes: Landscape Overview

Rennes is the primary hub for family office activity in Brittany. Paris dominates the national market, home to firms like Indosuez (€147B AUM) and Financière Agache (€144B AUM). Rennes-based offices are far smaller, independent, and built around personal service for regional UHNW families. The city counts at least 8 firms offering family-office-level wealth management. Satellite offices extend into Saint-Jacques-de-la-Lande, Saint-Grégoire, Saint-Brieuc, and Vannes.

The local market blends several office types. MFOs such as Marquis Family Office, iKer Family Office, and NAFASI serve multiple families through shared teams. Eukratos, a Paris-based shared family office, opened a dedicated Rennes branch at 100 avenue Sergent Maginot. Groupe Le Duff remains the city's only documented SFO.

Independent advisors like Heol Patrimoine and Agape Patrimoine round out the market. They offer holistic wealth structuring for families below the traditional €100M threshold.

Two regulatory models coexist here. Under the French model, offices that avoid direct investment advice need no formal approval. Offices providing investment advisory must register as CIF (Conseiller en Investissement Financier) with ORIAS and fall under AMF oversight.

Growth signals are clear. The national industry association is developing regional delegations. Profitys has launched an AI-driven planning platform. National groups like Cyrus Herez continue expanding into Brittany.

Family Office Comparison at a Glance

The table below compares the leading family offices in Rennes by type, AUM, focus, and location. Most Rennes-based offices do not disclose AUM publicly, reflecting the discretion typical of French wealth management.

Family Office	Type	AUM Estimate	Investment Focus	Key Services	Location
Cyrus Herez	Wealth Mgmt / FO	€22B+ (group)	Structured products, non-coté, real estate	Full-service patrimony, charitable giving advisory	22 rue de l'Alma, Rennes
Rezult Family Office	Independent FO	€100M+ advised	Holistic patrimony, fiscal strategy	Patrimony design, family oversight, transmission	Rennes
Marquis Family Office	MFO	Not disclosed	Transgenerational wealth, ISR investing	Succession planning, family governance	1 Square René Cassin, Rennes
iKer Family Office	MFO	Not disclosed	Real estate restructuring, private debt, derivatives	Tax filing (IR, IFI), lease renegotiation	Saint-Jacques-de-la-Lande
NAFASI (OFISI)	MFO	Not disclosed	Legal/juridical patrimony strategy	AI admin platform, risk management, expert coordination	Rennes area
Eukratos	Shared FO / MFO	Not disclosed	Consolidated reporting, investment advisory	Banking coordination, wealth oversight	100 av. Sergent Maginot, Rennes
Welys (CPI Groupe)	Family Office	Not disclosed	Patrimony engineering, private equity	Succession (Canopée product), director advisory	Brittany
Heol Patrimoine	Family Office	Not disclosed	Diversified patrimony, risk management	Generational transfer planning, expert coordination	Rennes & Saint-Brieuc
Hortus Patrimoine	MFO	Not disclosed	Listed/unlisted assets, real estate club deals	Wealth optimization, real-time reporting	Rennes
Agape Patrimoine	MFO	Not disclosed	Wealth structuring, transmission	Legal/tax advisory, financial planning	Rennes

Cyrus Herez and Rezult are the only offices with publicly available AUM figures. The remaining firms favor discretion, a norm in French family office culture where confidentiality often outweighs marketing.

Top Picks by Strategy

• Largest Network: Cyrus Herez, with €22B+ in group-wide capital managed and 25+ offices, gives Rennes clients access to institutional-grade structured products and non-coté deals that smaller firms cannot source independently.
• Top Real Estate Specialist: iKer Family Office goes beyond standard property allocation by actively restructuring portfolios and renegotiating commercial leases for higher yields.
• Best for Succession Planning: Marquis Family Office combines transgenerational patrimony expertise with a finance durable certification for ISR-aligned wealth transfer.
• Most Innovative Platform: NAFASI developed its OFISI AI platform between 2015 and 2018, backed by BPI funding, to automate data collection and thousands of administrative procedures for client families.
• Strongest Independent Advisor: Rezult Family Office has advised over €100M for 50+ families over 10+ years, operating with full independence from product providers.
• Leading Cross-Border Option: Eukratos runs operations in France, Belgium, and Luxembourg from its Paris headquarters, with a dedicated Rennes branch for Breton families holding multi-country assets.
• Deep Patrimony Engineering: Welys Family Office, backed by CPI Groupe, pairs private equity capabilities with its proprietary Canopée succession product for business owners.

Top Family Offices in Rennes in Detail

Cyrus Herez (Rennes Branch)

Rennes families seeking institutional-scale resources find them at Cyrus Herez's Urban Quartz office on rue de l'Alma. The group manages over €22B in assets and employs 500+ professionals. Its 73% employee-owned structure aligns adviser incentives with client outcomes.

The Rennes branch provides access to structured products, unlisted allocations, real estate, and charitable giving strategies typically reserved for Paris-based clients. Families with complex, multi-asset portfolios benefit from a national platform that still delivers local service. Cyrus Herez also promotes ESG-aligned strategies, matching growing Breton demand for responsible wealth management.

Rezult Family Office

Independence defines Rezult. The firm advises on over €100M in managed assets for more than 50 families, with 10+ years of continuous operation in Rennes. Rezult charges flat fees to eliminate conflicts of interest from product commissions.

Its holistic approach covers patrimony design, fiscal strategy, family oversight, and generational transmission. Entrepreneurs preparing for or emerging from a liquidity event gain a single coordination point for legal, tax, and capital deployment decisions. Rezult positions itself as a long-term partner rather than a transactional adviser, a model that suits families building wealth preservation plans over decades.

Marquis Family Office

Transgenerational wealth planning sits at the core of Marquis Family Office. Founder Yuna Marquis holds a Master II in Droit et Gestion du Patrimoine, industry certification, and a finance durable qualification for sustainable investing. She also teaches at the Université de Rennes Master 2 program.

This academic and professional depth translates into rigorous ISR advisory and family governance structuring. The team of 1 to 10 operates from Centre d'Affaires Les Galaxies. Families who want their wealth aligned with environmental values while preserving it for future generations will find Marquis among the most specialized options in Brittany.

iKer Family Office

Real estate restructuring is where iKer stands apart. Led by Marina Gaucherot from Saint-Jacques-de-la-Lande, the firm does not merely allocate capital to property. It actively renegotiates commercial leases, restructures existing portfolios for higher yields, and manages IR and IFI tax filings.

iKer also provides access to private debt and derivatives, asset classes that most regional advisers cannot offer. Client testimonials describe "an efficiency that took patrimony management to a higher level." Families with concentrated real estate holdings who need hands-on portfolio optimization are iKer's core audience.

NAFASI (OFISI)

Technology meets legal expertise at NAFASI. Founded in 2010 by Hélène Gautier, the firm built OFISI, an AI-powered administrative platform developed over three years with BPI funding. The platform automates data collection and runs thousands of patrimony procedures.

NAFASI's team of 5 lawyers and 2 assistants coordinates with external notaires, avocats, and experts-comptables. Its flat-fee billing model ensures objectivity. Some client families invested directly in OFISI's capital during its fundraising round, a rare sign of trust. NAFASI plans to launch OFISI as a franchise, scaling its digital-first model beyond Brittany.

Eukratos Family Office (Rennes Branch)

Multi-country wealth demands consolidated oversight. Eukratos, headquartered in Paris, operates a shared family office model with a dedicated Rennes branch at 100 avenue Sergent Maginot. The firm provides consolidated reporting, advisory, banking relations coordination, and legal/fiscal monitoring.

Its Belgium and Luxembourg operations make it the natural choice for Breton families with cross-border wealth. The shared model pools high-level expertise, making services available at lower cost than a standalone SFO. Co-investment opportunities are also part of the offering.

Welys Family Office (CPI Groupe)

Patrimony engineering (ingénierie patrimoniale) is the speciality at Welys, part of CPI Groupe in Brittany. The firm covers private equity, real estate allocation, and financial planning for business directors.

Its Canopée product addresses generational transfer planning, helping founders structure wealth handovers. Welys coordinates with regulated professionals (avocats, notaires, experts-comptables) rather than replacing them. This collaborative approach works well for Breton entrepreneurs who already have advisory relationships but need a strategic layer tying everything together.

Heol Patrimoine

Dual-office coverage sets Heol Patrimoine apart in northern Brittany. Operating from both Rennes and Saint-Brieuc, the firm covers a wider geographic footprint than most local competitors. It takes a holistic view of patrimony, spanning real estate, equities, bonds, and alternative assets.

Wealth transfer planning and risk management form the backbone of its services. Heol coordinates a network of Breton experts for legal, tax, and estate planning needs. Families in northern Brittany who want a local adviser with regional reach should consider Heol's dual-office model.

Also notable: Agape Patrimoine focuses on wealth structuring for executives and entrepreneurs with a rigorous legal approach. Hortus Patrimoine & Associés offers custom portfolios including real estate club deals, structured products, and private equity with real-time reporting tools.

Investment Trends Shaping Rennes Family Offices

Real Estate Restructuring Beyond Buy-and-Hold

Breton families have long favored immobilier de rapport (rental property). Offices like iKer now push beyond passive ownership, restructuring portfolios and renegotiating commercial leases. This active management approach extracts higher yields from existing holdings rather than simply adding new assets.

Private Equity and Non-Coté Access

Regional UHNW families gain access to unlisted allocations and private debt through firms like Cyrus Herez and Welys. These asset classes were previously available only through Paris-based wealth managers. Cyrus Herez's €22B+ platform provides deal flow that smaller Rennes firms cannot match on their own.

Sustainable and ISR Investing in Brittany

Marquis Family Office's finance durable certification and Cyrus Herez's charitable giving advisory reflect growing demand for ESG-aligned wealth management. Breton families, many with roots in agriculture and food production, increasingly seek direct investments that align with environmental values.

AI and Digital Tools in Wealth Administration

NAFASI's OFISI platform automates thousands of administrative procedures using AI. Profitys has launched an AI-driven planning tool for tax, finance, and real estate strategy. These digital tools reduce manual data collection and improve reporting transparency for tech-savvy family members.

Tax-Optimized Succession Under French Fiscal Pressure

French IFI obligations and succession duties push Rennes families toward démembrement, assurance-vie luxembourgeoise, and SCI structures. Fiscal strategy now serves as a core differentiator among local offices. Rezult and Welys (with its Canopée product) build entire patrimony plans around minimizing tax erosion during generational transfers.

How to Evaluate a Family Office in This Market

The first question in Rennes is regulatory model. Some offices follow the French approach, where no advisory means no regulatory requirement. Others register as CIF with ORIAS and fall under AMF oversight. Families who want regulated advisory should verify CIF status before signing any engagement.

Fee structure reveals independence. Rezult and NAFASI charge flat fees (forfaitaire), meaning their advice stays free from product commissions. Offices affiliated with banking groups may earn commissions from products they recommend. Ask explicitly: "Do you receive any payments from financial product providers?"

A Rennes wealth management firm's strength often lies in its local professional network. iKer's lease renegotiation work and Heol's dual-city expert coordination both depend on deep Breton relationships with notaires, avocats fiscalistes, and experts-comptables. Ask how many regulated professionals an office regularly collaborates with, and whether those relationships are formal or ad hoc.

Beware product-driven approaches. An office that leads conversations with specific assurance-vie contracts or SCPI products may operate more like a CGP (wealth adviser) than a true private wealth office. A CGP optimizes products. A family office architects your entire patrimony, from fiscal strategy to generational transfer.

Most Rennes offices offer a free discovery call (appel découverte). Use it to assess communication style, team qualifications, and whether the office takes time to understand your family structure before proposing solutions.

Which Family Office Fits Your Needs?

UHNW families managing €50M or more in patrimoine should evaluate Cyrus Herez for institutional-grade resources and Eukratos for consolidated multi-jurisdiction reporting. Both firms bring Paris-level capabilities to Rennes, combining national scale with local presence. Eukratos is especially suited to families holding assets in Belgium or Luxembourg alongside their French patrimony.

Breton entrepreneurs who have recently exited a business or hold concentrated company wealth need offices built for transition planning. Rezult's decade of holistic patrimony design and Marquis Family Office's transgenerational focus help structure newly liquid wealth with succession in mind. Welys offers a similar approach through its Canopée product, with deeper private equity capabilities.

Next-generation wealth holders and digitally oriented families will find NAFASI's OFISI platform and Profitys' AI-driven advisory more aligned with their expectations for transparency and reporting. For families with heavy real estate portfolios, iKer Family Office's hands-on restructuring and commercial lease renegotiation expertise makes it the strongest specialist in Rennes.

Methodology

This guide to family office Rennes was compiled using national wealth directories, industry membership data, company websites, public business registries, and the ORIAS registry. Offices were selected based on headquarters or branch presence in the Rennes metro area and demonstrated service to UHNW families. Evaluation focused on independence, service scope, regulatory status, and area of specialization. AUM figures appear only where the offices themselves publicly disclosed them. Research was conducted in 2025 and 2026, with data verified against official filings and corporate websites. Offices that operate mainly as traditional wealth advisers (CGP) were included only where their service scope matches family office standards in breadth and client profile.