Castel Group
Castel Group (Castel Immobilier S.A.) is a Luxembourg-based real estate agency offering bundled property sales, rentals, rental management, and building (syndic) management services to individual buyers, sellers, landlords, and tenants across multiple Luxembourg municipalities.
- Company typePrivate
- Founded1949
- HeadquartersStrassen, Luxembourg
- Headcount11–50
- GTM typeB2B and B2C
- OfferingServices
What Castel Group does
Castel Group, operating through CASTEL IMMOBILIER S.A., is a Luxembourg-based real estate agency headquartered at 179 route d'Arlon in Strassen. Founded in 1981, the firm provides a bundled property services platform spanning residential and commercial sales, rentals, rental management (gestion patrimoine), and condominium building management (syndic de copropriété), with additional referral-based maintenance, renovation, mortgage calculation (Credihome), and insurance (Foyer) services.
The business model is transaction- and fee-based: commissions on sales and lettings, recurring management fees on rental portfolios, and syndic fees on shared buildings. Distribution is primarily direct-to-consumer through the castel.lu website, which centralizes property listings across multiple Luxembourg municipalities (Luxembourg City, Belair, Belval, Strassen, Esch-sur-Alzette, and others), supported by email alert subscriptions, a Facebook presence, and Google Maps/SEO integration. Active development listings (Résidence Cloche, Wandmillen Residence, Heritage des Roses) indicate engagement with new-build inventory alongside the secondary market.
Operationally, the firm operates at small scale (11–50 employees), serves individuals, families, landlords, and small commercial clients, and relies on a network of home services referral partners (Travaux Modernes, Immo Services, Omniclean, Waldy) to extend post-transaction service capture. The company is privately held and does not disclose revenue; no AI/ML capabilities, patents, or third-party integrations beyond standard portal functionality are evidenced in the available material.
Castel Group firmographics
Firmographics- Name
- Castel Group
- Legal name
- Castel Group (Groupe Castel)
- Website
- https://castel.lu
- Company type
- Private
- Founded year
- 1949
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Castel Group (Castel Immobilier S.A.) is a Luxembourg-based real estate agency offering bundled property sales, rentals, rental management, and building (syndic) management services to individual buyers, sellers, landlords, and tenants across multiple Luxembourg municipalities.
- Ownership category
- akta.pro rank
Castel Group industry classification
Industry- Product category
- Real Estate Services
- NAICS
- Offices of Real Estate Agents and Brokers (53121), Real Estate Property Managers (53131)
- SIC
- Real Estate Agents & Managers (For Others) (6531)
- akta.pro primary industry
- Residential Investment Property Brokerage (SFR/Small Multifamily) (BPAJAAAE)
- akta.pro secondary industries
- Tenant Representation & Corporate Services Brokerage (BPAJABAJ), Single-Family Rental (SFR) Property Management (BPAJAFAB)
Keywords
Where Castel Group is headquartered
LocationHeadquarters
- HQ city
- Strassen
- HQ country
- Luxembourg
- HQ region
- Europe
Offices1 record
Markets served
Castel Group business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure
Distribution channels1 record
Marketing channels4 records
Castel Group product offering
Product offeringCore offering
CASTEL IMMOBILIER S.A. operates a real estate agency in Luxembourg, providing property sales, rental, and professional management services for residential and commercial real estate. The firm handles transactions for apartments, houses, land, buildings, and business spaces across Luxembourg locations, alongside rental management, condominium (syndic) administration, and renovation coordination services.
Product overview
CASTEL IMMOBILIER S.A. is a Luxembourg-based real estate agency offering a comprehensive suite of property services. The company operates as a single integrated real estate platform providing property sales across residential and commercial segments (apartments, houses, land, buildings, business spaces), rental services, professional rental management, building/syndic management, and renovation coordination. Key products include direct property listings and new development projects. The company also provides ancillary financial services through third-party partnerships (Credihome for mortgages, Foyer for insurance).
Differentiator
Problem solved
Functional benefit
Products and services
- Property Sales Services Real estate sales brokerage for apartments, houses, land, buildings, garages/parking, offices, and warehouses across Luxembourg municipalities including Luxembourg City, Belair, Belval, Strassen, and Esch-sur-Alzette. Includes valuation, listing, viewing coordination, and transaction support for sellers and buyers.
- Property Rental Services Rental listing and placement services for apartments, houses, offices, commercial spaces, parking, and land in Luxembourg municipalities, supporting both residential tenants and commercial occupiers.
- Rental Management (Gestion Patrimoine) Professional rental property management for landlords, handling tenant relations, rent collection, and property maintenance coordination across Luxembourg.
- Building Management (Syndic de Copropriété) Condominium and building management services for shared property ownership, covering common area maintenance, administrative tasks, and regulatory compliance.
- Property Development Listings New development project listings including residential buildings and subdivisions such as Résidence Cloche in Belval, Wandmillen Residence in Luxembourg, and Heritage des Roses in Strassen.
- Maintenance and Renovation Coordination
Companies that use Castel Group
Customer profileSegments3 records
Ideal customer profiles4 records
Castel Group technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Castel Group partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered minor.
- Travaux ModernesminorHome maintenance and renovation service partner referred on the company's maintaining/renovating page. Provides renovation services for property owners.
- Immo ServicesminorHome maintenance service partner for property owners in Luxembourg.
- OmnicleanminorCleaning services partner for property maintenance.
- WaldyminorProperty maintenance services partner located in Strassen, Luxembourg.
- CredihomeminorMortgage calculation service offered through the website, allowing clients to calculate home loan payments and acquisition costs.
- Foyer InsuranceminorInsurance quote service offered through the website for property-related insurance needs.
Scale indicators3 records
Recent moves5 records
Expansion highlights5 records
Castel Group competitors and assessment
Company assessmentDirect peers
- RE/MAX Luxembourg: Global real estate franchise operating in Luxembourg, offering residential and commercial sales, rentals, and property management. Directly comparable to Castel's full-service brokerage offering with similar services and target segments.
- Barnes Luxembourg: International luxury real estate agency with a Luxembourg office offering premium residential and commercial property services. Comparable as a competitor for high-value property listings and high-net-worth clientele in Luxembourg.
- Athome Luxembourg: Major Luxembourg real estate portal offering property listings for sale and rent. Comparable to Castel as a competing discovery channel for residential and commercial property, with similar geographic coverage within Luxembourg.
- Century 21 Luxembourg: Global real estate franchise with a Luxembourg presence, providing residential sales, rental, and management services. Direct peer competing for the same buyer, seller, and landlord segments in the Luxembourg market.
- Sotheby's International Realty Luxembourg: International luxury real estate network with a Luxembourg presence focused on premium and luxury residential properties. Comparable to Castel's higher-end listings segment in Luxembourg.
- Property Partners Luxembourg: Luxembourg-based real estate agency offering sales, rental, and management services for residential and commercial properties. Direct peer competing in the same mid-to-upper segment of the Luxembourg market.
- Immotop.lu: Luxembourg's leading online real estate marketplace aggregating property listings from agencies across the country. Directly comparable to Castel as a primary channel for buyers, sellers, and renters searching for property in Luxembourg, and a potential competitive threat to Castel's own listing website.
- Engel & Völkers Luxembourg: International luxury real estate franchise with a Luxembourg office, specializing in high-end residential and commercial properties. Directly competes with Castel for premium property listings and buyer representation in the Luxembourg market.
- Hoffmann Real Estate Luxembourg: Established independent Luxembourg real estate agency offering sales, rentals, and management services. Directly comparable local competitor with similar geographic focus and service offerings.
Emerging players
- Homegate Luxembourg: Real estate portal originating from Switzerland with listings in Luxembourg. Comparable as a discovery and listing channel competing for the attention of Luxembourg property seekers, though primary market remains Switzerland.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights6 records
Customer concentration
Castel Group social profiles
Digital presenceCastel Group financial estimates
Financial estimateRevenue estimate
Valuation estimate
Castel Group leadership team
Management profileNumber of profiles
Castel Group subsidiaries and ownership
Company hierarchySubsidiaries1 record
Castel Group funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Castel Group 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 Castel Group
What does Castel Group do?
CASTEL IMMOBILIER S.A. operates a real estate agency in Luxembourg, providing property sales, rental, and professional management services for residential and commercial real estate. The firm handles transactions for apartments, houses, land, buildings, and business spaces across Luxembourg locations, alongside rental management, condominium (syndic) administration, and renovation coordination services.
Is Castel Group a public or private company?
Castel Group is a private company. It is classified as unknown and is currently operating.
When was Castel Group founded?
Castel Group was founded in 1949. It employs 11 to 50 people.
Where is Castel Group based?
Castel Group is headquartered in Strassen, Luxembourg, in the Europe region.
Who are Castel Group's main competitors?
Direct peers on record are RE/MAX Luxembourg, Barnes Luxembourg, Athome Luxembourg, Century 21 Luxembourg, Sotheby's International Realty Luxembourg, Property Partners Luxembourg, Immotop.lu, Engel & Völkers Luxembourg and Hoffmann Real Estate Luxembourg. Homegate Luxembourg is listed as an emerging player.
Does Castel Group have an API?
No public API is recorded for Castel Group.
What industry is Castel Group in?
Castel Group's product category is Real Estate Services. Its primary akta.pro industry code is BPAJAAAE, Residential Investment Property Brokerage (SFR/Small Multifamily), with a secondary code of BPAJABAJ, Tenant Representation & Corporate Services Brokerage. Its NAICS code is 53121 and its SIC code is 6531.