Tertio
Tertio is a French boutique consulting firm founded in 1996 that delivers economic development strategy, territorial planning, public project management, and organizational consulting to French local governments and enterprises, staffed by a small team of senior consultants without junior staff.
- Company typePrivate
- Founded1996
- HeadquartersMarseille, France
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Tertio does
Tertio is a French professional-services firm that provides strategic consulting to local governments (collectivités locales) and enterprises. Founded in 1996 under the name SV&GM Sud and rebranded as Tertio with Pierre Fiastre as Président-Directeur Général, the firm operates with three named senior consultants (Fiastre, Jacques Michel, Adeline Le Bras) and no junior staff. Service lines include economic development strategy for public collectivities, public project management (including major public investments such as SNCF workshop rehabilitation), public-sector organization and procurement auditing, enterprise development strategy, and territorial planning (aménagement du territoire) delivered in consortium with Proscot.
The firm's offerings are people-based advisory work rather than technology products: there is no software platform, no API, no application, and no proprietary data or AI assets. Delivery is carried out by experienced consultants who run parallel missions at different clients; the firm's stated differentiator is a customized methodology, long-term client relationships, and explicit avoidance of the standardized approaches associated with large IT-conglomerate consulting groups. Tertio maintains an ecosystem of project partners (Proscot, Movida, Stratys, Eureca, Urbanis, Groupe 6, EAU, Sogreah) that allow it to bid on multi-disciplinary urban planning tenders such as SCOT (Schéma de Cohérence Territoriale) studies.
Commercially, Tertio sells project-based consulting mandates on multi-year contracts to French municipalities, départements, régions, intercommunal structures, public agencies (CCI Marseille Provence, Caisse des Dépôts) and private-sector clients in industry, services, healthcare, utilities, and banking. Pricing is negotiated per engagement and is not publicly disclosed. The client base spans at least nine French mainland regions plus overseas territories (Guadeloupe, Martinique, La Réunion, Guyane), with more than 50 named local-government references. Tertio is privately held by its founders/management with no disclosed external investors, parent company, or institutional ownership.
Tertio firmographics
Firmographics- Name
- Tertio
- Legal name
- TERTIO
- Website
- https://tertio.org
- Company type
- Private
- Founded year
- 1996
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Tertio is a French boutique consulting firm founded in 1996 that delivers economic development strategy, territorial planning, public project management, and organizational consulting to French local governments and enterprises, staffed by a small team of senior consultants without junior staff.
- Ownership category
- akta.pro rank
Tertio industry classification
Industry- Product category
- Management Consulting
- NAICS
- Management Consulting Services (54161)
- SIC
- Services-Management Consulting Services (8742)
- akta.pro primary industry
- Systems Engineering & Technical Program Management (BPAHAIAI)
Keywords
Where Tertio is headquartered
LocationHeadquarters
- HQ city
- Marseille
- HQ country
- France
- HQ region
- Europe
Markets served
Tertio business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales
Revenue model
- Professional Consulting Services: Revenue generated from consulting missions for local governments and enterprises, focusing on economic development strategies, territorial planning, and organizational improvement.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based consulting services |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels2 records
Tertio product offering
Product offeringCore offering
Tertio is a French management consulting firm that provides strategic advisory services to local governments (collectivités) and enterprises. Its practice focuses on economic development, territorial planning, public project management, organizational optimization, and public procurement audits. The firm operates across multiple French regions with a senior-only consultant model.
Product overview
Tertio is a consulting firm (cabinet de conseil) providing strategic advisory services to local governments (collectivités locales) and enterprises. The firm operates as a single unified consulting practice rather than a platform-based product. Its services include economic development strategy, public project management, public sector organization, territorial planning (via the Proscot consortium), enterprise development consulting, and public procurement auditing. All services are delivered by experienced consultants through a long-term partnership approach.
Differentiator
Problem solved
Functional benefit
Products and services
- Economic Development Consulting
- Territorial Planning Consulting
- Public Project Management Consulting
- Organizational Optimization Consulting
- Public Procurement Audits
Companies that use Tertio
Customer profileNamed customers22 records
Segments2 records
Ideal customer profiles1 record
Tertio technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Tertio partnerships and signals
Strategic signalPartnerships
Eleven partnerships are on record, tiered core and minor.
- ProscotcoreTertio partners with Proscot for land development (aménagement du territoire) projects. Proscot leads SCOT (Territorial Coherence Scheme) development while Tertio provides strategic consulting support.
- ProscotcoreCollaboration with Proscot for territorial planning projects including SCOT development, particularly for the SM Pays d'Arles project.
- MovidaminorTertio partnered with Movida (Alain Magnan) for image sector and economic development studies, including Rhône-Alpes Cinéma study.
- MovidaminorCollaborated with Movida for Technoport economic positioning study in La Réunion.
- StratysminorPartner in various SCOT projects including Biterrois, Lille Métropole image sector, and other territorial planning initiatives.
- EurecaminorPartner in multiple SCOT development projects across France including Pays d'Arles, Sud Meurthe et Moselle, and Landes 2040.
- Groupe 6minorArchitecture and urban planning partner for various SCOT and territorial development projects.
- UrbanisminorUrban planning specialist partner for multiple SCOT projects including Biterrois and Tarbes Ossun Lourdes.
- SogreahminorEngineering and environmental consulting partner for specific territorial development projects.
- EAUminorPartner in SCOT projects including Riviera Française, Biterrois, and Sud Meurthe et Moselle.
- Michel PortolanominorIndividual consultant collaborator on specific projects including Provence Promotion mission and EPIDA study.
Scale indicators2 records
Recent moves6 records
Expansion highlights3 records
Tertio competitors and assessment
Company assessmentDirect peers
- Stratégie & Territoires: French consulting firm focused on territorial strategy, economic development, and public policy advice for French regions and intercommunalities — a close boutique peer in the same niche as Tertio.
- Algoé: French independent management consulting firm with deep public sector and territorial strategy practice, serving French local governments and enterprises on transformation and development engagements — closely comparable to Tertio in size, scope, and customer profile.
- Espelia: French public-sector consulting firm providing economic development, territorial planning, and public procurement advice to French local authorities — directly comparable to Tertio's collectivités-focused practice.
- Sémaphores: French consulting firm specialized in public sector strategy, organizational transformation, and territorial development for French ministries, agencies, and local authorities — direct comparable in services, customer base, and boutique scale.
- Stratorg: Independent French strategy and public-sector consulting firm with a strong public transformation practice serving French public entities — comparable boutique consulting peer.
Broad incumbents
- Kea & Partners: Larger French strategy consulting firm with a recognized public-sector and territorial transformation practice serving French and European public clients — a scaled peer operating in the same market with broader portfolio.
- Wavestone: Major French-origin consulting firm (formerly Solucom) with significant public-sector and territorial transformation practices serving French ministries and large public entities — a much larger incumbent competing in adjacent French public-sector engagements.
- Roland Berger (France): Global strategy consultancy with a strong French public-sector and economic development practice advising French and European governments — broader incumbent competing for high-end public strategy mandates.
Emerging players
- Cabinet Rayssiguier: French boutique consulting firm specialized in public finance, public procurement, and local government performance for French collectivités — directly comparable niche boutique.
Others
- Proscot: Tertio's strategic partner for territorial planning (SCOT) projects; included as a comparable peer because of its parallel work in land-use planning for French local authorities, though it is also a partner rather than direct competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks7 records
Key highlights7 records
Customer concentration
Tertio financial estimates
Financial estimateRevenue estimate
Valuation estimate
Tertio leadership team
Management profileNumber of profiles
Profiles3 records
Tertio funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Tertio M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Tertio
What does Tertio do?
Tertio is a French management consulting firm that provides strategic advisory services to local governments (collectivités) and enterprises. Its practice focuses on economic development, territorial planning, public project management, organizational optimization, and public procurement audits. The firm operates across multiple French regions with a senior-only consultant model.
Is Tertio a public or private company?
Tertio is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Tertio founded?
Tertio was founded in 1996. It employs 1 to 10 people.
Where is Tertio based?
Tertio is headquartered in Marseille, France, in the Europe region.
How does Tertio make money?
One revenue line is on record: professional Consulting Services.
Who are Tertio's main competitors?
Direct peers on record are Stratégie & Territoires, Algoé, Espelia, Sémaphores and Stratorg. Broad incumbents are Kea & Partners, Wavestone and Roland Berger (France). Cabinet Rayssiguier is listed as an emerging player. Proscot is listed as an others.
Does Tertio have an API?
No public API is recorded for Tertio.
What industry is Tertio in?
Tertio's product category is Management Consulting. Its primary akta.pro industry code is BPAHAIAI, Systems Engineering & Technical Program Management. Its NAICS code is 54161 and its SIC code is 8742.