Magma Notaires de France

What Magma Notaires de France does

Magma Notaires de France is a French notarial practice (étude notariale) operating under the legal entity SAS JM. MATEU A. SANCHEZ & JC TASSEL NOTAIRES ASSOCIES, registered at RCS Pontoise under number 901 244 327. The firm traces its origins to 1630 and is headquartered at Magny-en-Vexin, with additional offices in Mantes-la-Jolie (opened 2018) and Saint-Germain-en-Laye (opened December 30, 2025). It is staffed by 8 notaires and 30+ collaborators and serves individuals, professionals, and institutional clients across the Île-de-France and Normandie regions, with multilingual capabilities in French, English, and Spanish — particularly for cross-border matters involving Spain and Latin America.

The firm delivers the full range of services typically rendered by a French étude notariale: real estate and financing (immobilier et financement), family law (droit de la famille), tax and wealth planning (fiscalité et patrimoine), commercial and business law (droit commercial de l'entreprise), international law (droit international), and real estate negotiation (négociation immobilière) through its dedicated Service Expertises et Négociations Immobilières. Its technology stack is built on industry-standard notarial infrastructure — Genapi for document management, Lifesize for video conferencing, Genapicloud for online payment, and dedicated client portals (mondossiernotaire.fr for individuals and espacenotarial.com for professionals) — and the firm currently lists approximately 250 properties for sale across Paris, Val-d'Oise, Eure, Yvelines, and Oise.

The revenue model is entirely transaction-fee based, with notarial fees regulated by French state decree (tarif notarial) and published transparently on the firm's website as a published fee schedule. Customer acquisition is sales-led and driven by referrals from banks, real estate agents, lawyers, and other notaries, alongside inbound traffic from the firm's website and property listings portal. The 2021 conversion from a Société Civile Professionnelle to a SAS explicitly structured the entity to onboard new partners and competencies, supporting the multi-office expansion observed in 2018 and 2025.

Name

Magma Notaires de France

Legal name

SAS JM. MATEU A. SANCHEZ & JC TASSEL NOTAIRES ASSOCIES

Website

https://magma.notaires.fr

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Magma Notaires de France is a French notarial practice founded in 1630, operating three offices in Île-de-France and Normandie with 8 notaires and 30+ collaborators, serving individuals, professionals, and institutional clients in real estate, family, commercial, tax, international, and negotiation matters.

Ownership category

akta.pro rank

Product category

Notary and Legal Services

NAICS

Offices of Notaries (541120), Offices of Notaries (54112), Title Abstract and Settlement Offices (541191)

akta.pro primary industry

Notary & Signing Agent Services (Remote/Onsite) (BPAJAOAF)

akta.pro secondary industries

Document Preparation & Recording Services (Deeds, Liens) (BPAJAOAG), Estate Administration & Probate Services (FSAAANAE)

Keywords

• Notarial services
• Real estate law
• Family law
• Estate planning
• International legal services

Headquarters

HQ city

Magny-en-vexin

HQ country

France

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure, Others

Revenue model

1. Notarial Services - Real Estate Transactions: Legal and notarial services for property sales, purchases, and financing. Fees regulated by French state for authentic acts.
2. Family Law Services: Succession planning, estate management, family wealth transfers, prenuptial agreements, and family dispute resolution.
3. Business and Commercial Law Services: Corporate law, commercial leases, business transfers, and company formation services for artisans, merchants, and business leaders.
4. Taxation and Wealth Management Advisory: Patrimonial analysis, tax optimization, retirement planning, and wealth transfer strategies.
5. International Law Services: Cross-border property transactions, international estate planning, particularly focused on Spain and Latin America relations.
6. Real Estate Negotiation Services: Property valuation, buyer/seller matching, and real estate transaction facilitation through the Service Expertises et Négociations Immobilières.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Magma Notaires de France is a French notary firm providing legally authentic services (actes authentiques) for property transactions and financing, family law and succession, taxation and wealth management, commercial and corporate law, international law (with Spanish/Latin American specialization), and real estate negotiation. Services are delivered through three physical offices in the Paris western suburbs and supplemented by regulated digital tools including online fee payment, client portals, and video conferencing.

Product overview

Magma Notaires de France is a French notary firm (office notarial) providing comprehensive legal services across multiple domains. The firm operates through two physical offices (Saint-Germain-en-Laye and Magny-en-Vexin) and offers digital services including online payment, client portals, video conferencing, and practical guides. Their core legal services encompass real estate and financing, family law, tax and heritage planning, commercial business law, international law (specializing in Spain and Latin America relations), and real estate negotiation. The firm, established in 1630 and transformed into a SAS (Société par Actions Simplifiée) in 2021, currently comprises 8 notaries and approximately 30 collaborators serving private individuals, professionals, and institutional clients.

Differentiator

Problem solved

Functional benefit

Products and services

• Immobilier et Financement (Real Estate and Financing) Notarial services guaranteeing the legal security of property transaction conventions, including pre-contract preparation, administrative documents, tax advice (capital gains, mutation duties, property VAT), and financing arrangements for individual and professional buyers and sellers.
• Droit de la Famille (Family Law) Family law notarial services assisting clients through personal and patrimonial matters during both happy moments and difficult times, including death, divorce, incapacity, marriage contracts, and related succession matters.
• Fiscalité et Patrimoine (Taxation and Wealth Management) Tax and heritage planning services for artisans, merchants, and business leaders, covering commercial lease establishment, comprehensive patrimonial analysis, tax optimization, retirement planning, and wealth transfer strategies.
• Droit Commercial de l'Entreprise (Commercial Business Law) Commercial law notarial services assisting professionals with all stages of business projects, including company formation, commercial leases, business transfers and acquisitions (Pacte Dutreil), delivered in partnership with business advisors.
• Droit International (International Law) International law department handling cross-border matters, particularly with Spain and Latin America, including cross-border real estate acquisition, estate transmission, financing, and family law matters, with bilingual French-Spanish documentation.
• Négociation Immobilière (Real Estate Negotiation) Real estate negotiation services for buying or selling apartments, houses, offices, commercial spaces, parking, buildings, and land, including expertise for litigation or judicial requests.
• Service Expertises et Négociations Immobilières Dedicated expertise and real estate negotiation service handling property valuation, buyer searches, and secure transaction frameworks for judicial or litigation requirements, operating from the Magny-en-Vexin office.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Bignon Lebray: Multi-office French notarial and legal services firm covering corporate, real estate, family, and tax law with a comparable partner-led, multi-discipline model. Functionally similar to Magma in scope and structure across French regional markets.
• Lexcase Notaires: French multi-office notary practice (étude notariale) offering comparable authentic-act services in real estate, family, business, and wealth law. Operates a similar multi-office, multi-notaire partner model across French regions, making it the closest direct functional and structural peer to Magma.
• Notaires du Grand Paris: Network/organization of Paris-area notarial practices, explicitly referenced on Magma's website as a member/affiliation context. It represents the same Paris-basin notarial profession with overlapping geographic footprint, providing a directly comparable reference set for Magma's catchment and operating model.

Broad incumbents

• Fidal: Largest French business law firm, with full national coverage and dedicated real estate, tax/patrimoine, and corporate practices. Provides overlapping capabilities on the business and tax side but is not itself a notary practice; included as the broad-incumbent reference for French advisory work that competes for the unregulated advisory share of Magma's wallet.
• Allen & Overy (now A&O Shearman): Global magic-circle law firm with large Paris real estate, finance, and private-wealth practices. Competes for the institutional investor and cross-border transaction work that Magma's Saint-Germain-en-Laye practice (SANCHEZ) targets; relevant as a broad-incumbent benchmark for institutional client work.
• Dentons: Global law firm with a leading French real estate practice serving institutional investors, banks, and family offices. Comparable to Magma on the institutional client segment (one of Magma's three named customer segments) but at vastly broader scale and geographic scope.
• KPMG Avocats (France): Tax and corporate law arm of a Big Four firm in France with significant heritage, M&A, and international wealth advisory practices. Competes with Magma's Fiscalité et Patrimoine and Droit International offerings on the unregulated advisory side for institutional and family-office clients.

Others

• Natixis Wealth Management (notarial/patrimonial advisory): Adjacent wealth-management and patrimonie advisory provider serving similar HNW clientele as Magma's Fiscalité et Patrimoine division. Useful as a thematic peer for international wealth structuring rather than as a direct competitor for notarial acts.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/jm-mateu-a-sanchez-jc-tassel-notaires-associes

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Magma Notaires de France