Clersol Nantnet

What Clersol Nantnet does

Clersol Nantnet is a French commercial cleaning services provider headquartered in Nantes and operating as a SAS (Société par Actions Simplifiée) with €200,000 in share capital. Founded in 2000 by Antonio Pereira da Costa, the company employs approximately 173 staff, comprising 160 cleaning agents (84 FTE equivalent), 13 site supervisors, and 4 zone managers. It operates from two offices — its Nantes headquarters (since 2014) and a Saint-Nazaire branch (since 2007) — and maintains a fleet of 26 vehicles serving roughly 1,000 sites across Loire-Atlantique and adjacent areas. The company holds ISO 14001 environmental management certification (since April 2016) and Qualipropre certification, and uses Ecolabel-approved cleaning products.

The service offering splits into two streams: recurring/core cleaning contracts and specialized one-off services. Recurring work covers routine maintenance for offices, common areas of residential buildings, and industrial sites. Specialized services include end-of-site cleaning for construction handover, ReSPR air purification (a COVID-disinfection technology added in March 2021), Bona-certified parquet maintenance, window and facade cleaning using Unger Hi-Flo purified water systems, and a five-step quality assurance protocol. Customers span tertiary businesses, public-sector bodies, residential syndicates, automotive dealerships, retail, hospitality (including the Alliance Pornic Resort thalassotherapy center), and industrial clients; named accounts include TRSB, France Sécurité, Belvia Immobilier, and FAC-HABITAT.

The business model is contract-based commercial cleaning billed on a mix of recurring monthly/quarterly agreements and ad-hoc interventions. Revenue is generated from labor hours, square meters cleaned, and specialized service fees. Distribution is direct, supported by the two-branch physical footprint and the 26-vehicle fleet. Growth has been achieved through geographic extensions (Guérande peninsula in 2004, Saint-Nazaire in 2007) and certification-driven service-line additions rather than through acquisitions or external funding, and no external capital raises have been disclosed.

Name

Clersol Nantnet

Legal name

CLERSOL NANTNET

Website

https://nantnet.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

51–100 employees

Short description

Clersol Nantnet is a Nantes-based commercial cleaning services provider employing approximately 173 staff, serving roughly 1,000 industrial, construction, tertiary, residential, and hospitality sites across Loire-Atlantique through recurring contracts and specialized services including disinfection and parquet maintenance.

Ownership category

akta.pro rank

Product category

Commercial Cleaning Services

NAICS

Janitorial Services (561720), Janitorial Services (56172), Waste Treatment and Disposal (56221)

SIC

Sanitary Services (4950)

akta.pro industry

PRIMARYIMAIADAN

Specialty Deep Cleaning (Duct/Kitchen Exhaust/Pressure Washing)

Industrials, Manufacturing & Construction/Industrial Services & Facility Operations/Cleaning, Janitorial & Sanitation Services

SECONDARYBPABABAM

Pressure Washing & Exterior Hardscape Cleaning

Business & Public Services/Facilities Management & Building Services/Commercial & Janitorial Cleaning Services

SECONDARYHSAEABAJ

Deep Exterior Cleaning (Pressure Washing, Patios/Driveways, Siding)

Home & Personal Services/Home Cleaning & Housekeeping/Deep Cleaning

Keywords

• Professional cleaning services
• Industrial cleaning
• Commercial cleaning
• Facility maintenance services
• Specialized cleaning services

Headquarters

HQ city

Nantes

HQ country

France

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Others, Marketing or Sales, Technology or R&D

Revenue model

1. Nettoyage et entretien récurrent (contrats récurrents): Standard recurring cleaning and maintenance services contracted at agreed frequencies. Services include window cleaning, workspace cleaning, common area maintenance, industrial cleaning, and commercial surface cleaning for ongoing client relationships.
2. Prestations spécifiques ponctuelles: Specialized one-time or periodic services including high-height window cleaning, wall/ceiling washing, facade/roofing cleaning, floor restoration, marble treatment, post-damage remediation, post-construction cleaning, bulk waste removal, and apartment move-out cleaning. Also includes COVID-19 disinfection and ReSPR air purifier rental.
3. Location de purificateur d'air ReSPR: Rental of ReSPR air purifiers for COVID-19 disinfection, available from 24 hours to over three days.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels7 records

Core offering

Clersol Nantnet is a professional cleaning services company providing recurring and specialized cleaning for businesses and public sector entities across the Loire-Atlantique region. Services span standard cleaning (window cleaning, workspace cleaning, common area maintenance, industrial cleaning, commercial surface cleaning, bulky waste removal) and specialized cleaning (high-rise window cleaning, wall/ceiling washing, post-incident restoration, specialty floor treatment, parquet renovation, marble treatment, cladding cleaning, and COVID-19 disinfection using ReSPR air purifiers).

Product overview

Clersol Nantnet is a professional cleaning services company offering a comprehensive portfolio of cleaning and maintenance services for businesses and public sector organizations in the Nantes region. The service portfolio is organized into two tiers: (1) Core/Standard Services covering recurring cleaning needs including window cleaning (Vitrerie), workspace cleaning (Espaces de travail), common area maintenance (Parties communes), industrial cleaning (Locaux industriels), commercial surface cleaning (Surfaces commerciales), and bulky waste removal (Encombrants); and (2) Specialized/Specific Services addressing non-recurring and specialized needs such as high-rise window cleaning (Vitrerie grande hauteur), wall and ceiling washing (Lessivage murs et plafonds), post-incident restoration (Remise en état), specialty floor treatment (Sols particuliers), parquet/wood floor renovation (Sols en bois) as a Bona Certified Artisan, marble treatment (Marbres), and building cladding cleaning (Bardages). The company also offers COVID-19 disinfection services using ReSPR air purifiers.

Differentiator

Problem solved

Functional benefit

Products and services

• Vitrerie (Window Cleaning) Interior and exterior window cleaning for vitrines, skylights, glass partitions, and verandas, including high-rise window cleaning services using specialized equipment. Targeted at businesses and public sector clients across the Loire-Atlantique region.
• Nettoyage-entretien des espaces de travail (Workspace Cleaning) Daily maintenance of workspaces and offices including furniture dusting, floor cleaning, waste disposal, and sanitary disinfection. Targeted at tertiary businesses and offices.
• Nettoyage-entretien des parties communes (Common Area Maintenance) Cleaning and maintenance of building common areas including hallways, staircases, elevators, parking areas, and waste management services. Targeted at residential property managers (syndics de copropriété) and commercial buildings.
• Nettoyage industriel (Industrial Cleaning) Industrial facility cleaning including floor sweeping, high-pressure washing of loading docks, workshop sanitization, and machinery dusting outside working hours. Targeted at industrial plants, factories, and agri-food production facilities.
• Nettoyage des surfaces commerciales (Commercial Surface Cleaning) Retail store and shopping center cleaning including floor maintenance, display dust removal, counter disinfection, and sanitary facility care. Targeted at retail businesses, supermarkets, and shopping centers.
• Enlèvement des encombrants (Bulky Waste Removal) Collection and recycling of bulky items for businesses and residential properties, including archive destruction with certificate of incineration. Targeted at businesses and residential property managers.
• Vitrerie grande hauteur (High-Rise Window Cleaning) High-access window cleaning using scaffolding, aerial platforms, rope work, and telescopic poles with pure water/ osmosis technology for streak-free results on glass up to 16 meters high. Targeted at buildings with elevated glazing requiring specialized equipment.
• Lessivage murs et plafonds (Wall and Ceiling Washing) Deep cleaning of walls, ceilings, doors, and moldings using degreasant application, squeegee rinsing, and microfiber wiping. Targeted at facilities requiring periodic deep cleaning beyond routine maintenance.
• Remise en état après sinistre (Post-Incident Restoration) Post-disaster cleaning including smoke extraction, waste removal, binoff loading rotation, site restoration, and construction site cleanliness maintenance. Targeted at insurance-related remediation and post-construction sites.
• Nettoyage de sols particuliers (Specialty Floor Treatment) Specialized floor care including moss removal, stripping, protection, carpet shampooing, and parquet sanding and varnishing. Targeted at facilities with specialty flooring requiring periodic restoration.
• Sols en bois - Rénovation parquet (Wood Floor and Parquet Renovation) Parquet sanding and varnishing, restoration, plank replacement, and exotic wood terrace cleaning and restoration services. Delivered as Bona Certified Artisan using exclusive Bona products and processes. Targeted at hotels, restaurants, offices, and historic buildings with wood flooring.
• Traitement des marbres (Marble Treatment) Marble and stone care including sanding, scratch removal, crystallization with mirror effect, and waterproofing treatments. Targeted at hotels, premium offices, and buildings with marble surfaces.
• Nettoyage des bardages (Cladding Cleaning) Building facade and metal cladding cleaning using fungicide treatment or high-pressure washing with chloride derivative, recommended every 5 years. Targeted at commercial and industrial buildings with metal or composite facades.
• Désinfection COVID-19 - Location ReSPR (COVID-19 Disinfection - ReSPR Rental) Air purification and disinfection service using NASA-derived NCC+ ionization technology, effective for spaces from 23 to 275 m². Rental available from 24 hours to over three days. Targeted at businesses, public sector, and event venues requiring pathogen disinfection.

Quantifiable outcome

• 83% of HT invoice amount reverted to employment and essential public services in France (BIOM indicator – Excellent societal performance)
• +6 more outcomes

Named customers5 records

Segments8 records

Ideal customer profiles8 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Four partnerships are on record, tiered minor and core.

• LRQA (Lloyd's Register Quality Assurance)minorOthers · 1 January 2016LRQA conducted Nantnet's ISO 14001 certification audit in February 2016, followed by a second visit on 31 March and 1 April 2016 to validate certification. Four internal auditors were trained following the audit to conduct intermediate audits over the three-year period before renewal.
• Les Corsaires de Nantes (NAGH)minorGTM or Marketing Partner · 1 January 2015Sports marketing and brand visibility partnership with Les Corsaires de Nantes (NAGH – Nantes Atlantique Hockey sur Glace) for the 2015-2016 season. This partnership included a tram advertising campaign displaying Nantnet branding in Nantes trams from 21 to 28 September 2016. Aims to build local brand awareness and community engagement.
• GEIQ Propreté Nantes 44coreStrategic or Co-development Partner · 1 January 2007Groupement d'Employeurs pour l'Insertion et la Qualification. Nantnet has been a member since 2007. Through this group, Nantnet prioritizes hiring individuals facing social difficulties, integrating them through qualification contracts (training of two six-month periods combining qualifications, social support, mobility assistance, housing support). Supports Nantnet's social policy and community integration commitments.
• BIOM (BIOM Attitude)coreStrategic or Co-development PartnerBIOM is a societal impact indicator measuring what a company contributes to its territory through jobs, training, taxes in France, and environmental spending. Nantnet is an active member and was regularly audited against public sustainable development standards. The membership supports Nantnet's RSE (corporate social responsibility) commitments and provides a quantifiable societal contribution score (83%) that can be shared with clients in procurement processes.

Scale indicators10 records

Recent moves9 records

Expansion highlights5 records

Direct peers

• Onet Propreté: Onet is a leading French multi-service group with a sizable propreté (cleaning) division serving industrial, tertiary, healthcare, and public-sector clients. Comparable to Nantnet in service scope (recurring cleaning, specialized services, hygiene) but with national footprint and significantly larger headcount. Competes for the same mid-market and enterprise cleaning contracts.
• Samsic: Samsic is a French facility services group offering cleaning, security, and multi-technical services. Directly comparable to Nantnet in core commercial and industrial cleaning, particularly serving regional and mid-market accounts in western France. Larger scale but operates similar recurring and specialized service model with comparable customer verticals.
• Héméra Group: Héméra is a French cleaning and facility services group with multi-regional presence across France. Directly comparable to Nantnet in commercial cleaning services, industrial cleaning, and customer base (offices, retail, public sector), though operating at a larger scale with broader geographic reach.
• Atalian Propreté: Atalian is a France-founded global facility services and cleaning group with strong presence across France. Closely comparable to Nantnet in core cleaning services (janitorial, industrial, specialized) and customer base (offices, retail, public sector), though materially larger and with international footprint. Active competitor for mid-sized and large regional French tenders.
• GSF (Groupe Service France): GSF is a major French commercial and industrial cleaning services company with national coverage across all major French regions. Directly comparable to Clersol Nantnet in core service lines (recurring janitorial, industrial cleaning, specialized services) and customer segments (tertiary, industrial, public sector, healthcare). Larger scale but operates in overlapping verticals and competes for the same regional contracts.

Broad incumbents

• Elior Services: Elior is a major French contract services group with a cleaning services division serving enterprise, healthcare, and public-sector clients. Overlaps with Nantnet in cleaning services but as part of a broader catering and facility services portfolio. Larger and more diversified competitor in shared tender markets.
• ISS France: ISS is a Danish-headquartered global facility services company with a substantial cleaning services offering in France. Overlaps with Nantnet in commercial cleaning, industrial cleaning, and specialized hygiene, but as part of a broader integrated facility services portfolio. Competes in larger enterprise and public-sector tenders where bundled services are required.
• Derichebourg Propreté: Derichebourg Propreté is the cleaning and multiservice arm of the larger Derichebourg Group, offering commercial, industrial, and specialized cleaning across France. Comparable to Nantnet in core service lines but operates as part of a diversified environmental services conglomerate with national footprint and significantly greater resources.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/clersol-nantnet

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Clersol Nantnet