GSS Gebäude-Service Sommer GmbH – zum Impressum

What GSS Gebäude-Service Sommer GmbH – zum Impressum does

GSS Gebäude-Service Sommer GmbH is an owner-operated building cleaning and facility management company headquartered in Bergisch Gladbach, North Rhine-Westphalia, Germany. The family-run GmbH (Geschäftsleiter Peter Sommer, with Yvonne Sommer and Kevin Sommer in leadership) operates from a single NRW base and serves commercial, residential, industrial, municipal, and event clients across more than 30 cities in the region, including Köln, Düsseldorf, Dortmund, Bonn, Wuppertal, Leverkusen, and Solingen. Its service portfolio spans recurring general cleaning (office, facility management, janitorial, medical practice, and maintenance cleaning), specialized cleaning (post-construction, deep floor, facade, glass/window, industrial, parking/garage, stairwell, and conservatory cleaning), seasonal winter services, event cleaning, and a separate aerial work platform rental business.

The company's technical capability centers on three assets: an in-house fleet of aerial work platforms from STEIGER, JLG, TEUPEN, PALFINGER, and Genie with working heights up to 33 meters; an osmosis-based window-cleaning system using demineralized water without chemicals; and water-fed telescopic poles reaching 21 meters. It is DIN EN ISO 9001 (quality) and DIN EN ISO 14001 (environmental) certified, holds Meisterbetrieb status with a qualified Gebäudereinigermeister, and is PQ-VOL pre-qualified through IHK Mittlerer Niederrhein for public procurement. The stated customer base includes 26+ named corporate logos and 2,000+ satisfied customers with 300+ positive reviews.

Commercially, GSS operates a sales-led, direct-to-client model with a four-person Vertrieb team plus internal sales support, generating custom quotes through free on-site inspections. Revenue is built on recurring cleaning contracts (subscription-like), project-based specialized cleaning, seasonal winter service subscriptions (Saison-Pauschale) and pay-as-you-go deployments (Einsatz-Pauschale), event-based cleaning, and equipment rental. Marketing is conducted primarily through the company website, phone, email, WhatsApp, and online contact forms, with per-city SEO landing pages and customer logos used as social proof. There is no public funding, no M&A activity, no API/external integrations, and no disclosed AI or software product layer.

Name

GSS Gebäude-Service Sommer GmbH – zum Impressum

Legal name

GSS Gebäude-Service Sommer GmbH

Website

https://gss-gebaeudeservice.de

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

GSS Gebäude-Service Sommer GmbH is a family-owned, ISO-certified building cleaning and facility management company in Bergisch Gladbach, Germany, serving commercial, industrial, residential, and municipal clients across 30+ cities in North Rhine-Westphalia with recurring cleaning, specialized cleaning, winter services, and aerial work platform rental.

Ownership category

akta.pro rank

Product category

Commercial Cleaning & Facility Management Services

NAICS

Janitorial Services (561720)

SIC

Services-Management Services (8741)

akta.pro primary industry

General Commercial Janitorial (Recurring Contract Cleaning) (BPABABAA)

akta.pro secondary industries

Commercial Snow Plowing (Parking Lots & Campuses) (HSAIAIAB), Disinfection, Sanitization & Infection Prevention Services (BPABABAE), Snow Blowing Services (HSAIAIAD)

Keywords

• Commercial cleaning services
• Facility management services
• Building maintenance services
• Window cleaning services
• Industrial cleaning services

Headquarters

HQ city

Bergisch Gladbach

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Gebäudereinigung (Building Cleaning Services): Core revenue from professional building cleaning services including office cleaning (Büroreinigung), facility management, janitorial services (Hausmeisterservice), practice cleaning (Praxisreinigung), and maintenance cleaning (Unterhaltsreinigung). Services are provided on contract basis with regular scheduled cleaning.
2. Spezialreinigung (Specialized Cleaning): Revenue from specialized cleaning services including construction cleaning (Bauendreinigung), floor deep cleaning (Grundreinigung), facade cleaning (Fassadenreinigung), glass and window cleaning (Glasreinigung), and industrial cleaning (Industriereinigung). These are typically one-time or periodic services.
3. Winterdienst (Winter Services): Snow removal and ice control services offered as seasonal flat rates (Saison-Pauschale) or per-deployment flat rates (Einsatz-Pauschale). Services from November 1 to March 31, with optional extension to April 30.
4. Eventreinigung (Event Cleaning): Cleaning services for events, concerts, festivals, and parties - both before, during, and after events. Revenue generated through project-based service agreements.
5. Steiger-Verleih (Aerial Work Platform Rental): Rental of aerial work platforms and construction lifts including various models from STEIGER, JLG, TEUPEN, PALFINGER brands for heights ranging from 8m to 33m.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

GSS Gebäude-Service Sommer GmbH is an owner-operated building cleaning and facility management company delivering general cleaning (office, janitorial, medical practice, maintenance), specialized cleaning (post-construction, facade, window/glass, industrial, deep floor), exterior services (event, parking, stairwell, winter, conservatory), and aerial work platform rentals across North Rhine-Westphalia (NRW), Germany. Services are delivered by trained cleaning teams at client sites on recurring contracts, project basis, or seasonal flat-rate plans.

Product overview

GSS Gebäude-Service Sommer GmbH is an owner-operated, ISO-certified building cleaning and facility management company based in Bergisch Gladbach, NRW, Germany. Its portfolio is structured as a suite of complementary service offerings: general cleaning services (office cleaning, facility management, janitorial services, medical practice cleaning, maintenance cleaning) form the core recurring offering; specialized cleaning services (post-construction cleaning, deep floor cleaning, facade cleaning, glass/window cleaning with osmosis technology, industrial cleaning) address higher-complexity needs; outdoor/exterior services (event cleaning, parking/garage cleaning, stairwell cleaning, winter services, conservatory cleaning) round out seasonal and area-specific requirements; and an aerial work platform (Steiger) rental division provides equipment for height-access tasks including the company's own STEIGER-branded lifts as well as JLG, TEUPEN, PALFINGER, and Genie models. The company serves residential, commercial, municipal, and industrial clients across a wide NRW geography.

Differentiator

Problem solved

Functional benefit

Products and services

• Büroreinigung (Office Cleaning)

Quantifiable outcome

• Over 300 positive reviews from over 2000 satisfied customers
• +1 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered minor.

• auftrag.jetztminorGTM or Marketing PartnerDigital marketing and web design partner responsible for the company's website design and digital marketing. Located in Berlin at Oranienburger Str. 45, 10117 Berlin. The partnership provides web design and online marketing services for the cleaning company.
• ZDH (Zentralverband des Deutschen Handwerks)minorOthersGerman handicraft trade association membership providing industry representation and standards support.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Dussmann Group: Major German facility services provider (Dussmann Stiftung & Co. KGaA) offering cleaning, security, catering, and technical FM. Direct overlap with GSS in commercial Gebäudereinigung, though Dussmann is significantly larger and serves national/international clients.
• Compass Group (Eurest / Medirest): Global contract food and support services group with German cleaning and FM offerings. Overlaps with GSS in commercial cleaning for corporate and institutional clients; operates at vastly larger scale.
• Wisag: One of Germany's largest facility services companies, headquartered in Essen (NRW). Offers building cleaning, security, technical FM, and aerial work platform services across Germany. Directly comparable via its Gebäudereinigung portfolio and NRW presence, but operates at significantly larger scale across multiple service lines.
• Hochtief Facility Management: Facility management subsidiary of Hochtief, providing technical and infrastructural FM including cleaning for commercial and public buildings in Germany. Direct competitor in nonresidential cleaning segments.
• Apleona Germany: Pan-European FM provider with strong German footprint, offering cleaning, technical, and infrastructural FM. Comparable in Gebäudereinigung and full-service FM scope; competes for the same enterprise and public-sector contracts as GSS.
• Gegenbauer Group (now Apleona): Berlin-based facility services group (merged into Apleona) offering integrated FM incl. Gebäudereinigung, property services, and winter services. Direct competitor in commercial cleaning; operates at significantly larger scale across Germany.
• STRABAG Property and Facility Services (STRABAG PFS): German FM subsidiary of STRABAG SE, offering integrated facility management including Gebäudereinigung, technical services, and winter services. Comparable in service portfolio, with national reach across Germany.
• Sodexo Germany: Global FM and food services group with German operations offering cleaning and building services. Competes with GSS for enterprise Gebäudereinigung contracts, though Sodexo's portfolio is much broader and centres on national/international clients.
• Bilfinger Engineering & Maintenance: German industrial services and FM provider serving process industry, energy, and real estate clients. Comparable in industrial cleaning (Industriereinigung) and technical FM, though Bilfinger's scale and client profile are well above GSS.
• Piepenbrock Unternehmensgruppe: Family-owned German facility services group (Osnabrück) offering cleaning, security, maintenance, and technical FM. Direct competitor in building cleaning and winter services; comparable multi-service, family-run model, though with national footprint.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/gss-geb%C3%A4ude-service-sommer-gmbh-%E2%80%93-zum-impressum

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 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 GSS Gebäude-Service Sommer GmbH – zum Impressum