ISKA Infrastruktur
ISKA Infrastruktur GmbH is a Bavarian specialty civil engineering company delivering turnkey underground infrastructure construction for municipalities, energy utilities, and telecoms across Bavaria, including canals, pipelines, district heating, fiber optic networks, and trenchless horizontal drilling.
- Company typePrivate
- Founded1961
- HeadquartersHolzkirchen, Germany
- Headcount11–50
- GTM typeB2B
- OfferingServices
What ISKA Infrastruktur does
ISKA Infrastruktur GmbH is a Bavarian specialty civil engineering and underground infrastructure construction company headquartered in Holzkirchen, Germany. Founded in 1961 (originally as ISKA Wiedenmann GmbH) and reorganized in 2024 through the merger of ISKA Schön GmbH and KronoBau GmbH under the vitronet Gruppe umbrella, the company delivers turnkey underground infrastructure projects from planning through execution to maintenance for municipal governments, energy utilities, and telecommunications providers. Its core service portfolio spans six lines: canal construction (DN 100 to DN 1000), pipeline and plant construction for gas, water, district heating and district cooling, cable civil engineering for power and data lines, fiber optic network expansion, surface restoration, and trenchless horizontal drilling up to DN 1000 (a capability it has held since 1981).
The company's operations rest on a fleet of 93 trucks, excavators, and loaders, 52 independent construction crews plus 5 cable assembly teams, and 280+ specialized employees operating across four locations in Holzkirchen, Augsburg, Königsbrunn, and Munich. Technical differentiation is anchored in long-standing industry certifications including Güteschutz Kanalbau AK2 (since 2001), DVGW GW 301 G1/W1 for gas/water (since 2011), AGFW FW 601 for district heating, and DIN EN ISO 3834-2 welding quality. The combination of certified workforce, owned equipment, in-house material procurement, and trenchless drilling expertise enables ISKA to bid on and execute complex public infrastructure tenders that smaller or uncertified competitors cannot.
ISKA generates revenue through project-based construction contracts and long-term framework agreements with municipal utilities and energy companies. Named engagements include fiber rollout for NetCom BW (EnBW) on the Swabian Alb, district heating trunk lines for swa Netze GmbH serving Augsburg, district cooling expansion for Stadtwerke München, and sustainability pilot infrastructure for Landeshauptstadt München. As a wholly-owned subsidiary of the vitronet Gruppe, ISKA participates in a national network of 2,700+ employees at 40+ locations that delivers integrated telecom and energy infrastructure services across Germany, giving the company national tender reach alongside regional delivery capacity.
ISKA Infrastruktur firmographics
Firmographics- Name
- ISKA Infrastruktur
- Legal name
- ISKA Infrastruktur GmbH
- Website
- https://iska-infrastruktur.de
- Company type
- Private
- Founded year
- 1961
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- ISKA Infrastruktur GmbH is a Bavarian specialty civil engineering company delivering turnkey underground infrastructure construction for municipalities, energy utilities, and telecoms across Bavaria, including canals, pipelines, district heating, fiber optic networks, and trenchless horizontal drilling.
- Ownership category
- akta.pro rank
ISKA Infrastruktur industry classification
Industry- Product category
- Civil Engineering & Infrastructure Construction
- NAICS
- Utility System Construction (2371), Power and Communication Line and Related Structures Construction (237130), Plumbing, Heating, and Air-Conditioning Contractors (238220)
- SIC
- Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)
- akta.pro primary industry
- Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels) (IMAFAGAE)
- akta.pro secondary industries
- Overhead Distribution Line Construction (MV/LV) (EUAEACAA), Overhead & Underground Collection System Construction (MV/HV Lines, Duct Banks) (EUAEADAG)
Keywords
Where ISKA Infrastruktur is headquartered
LocationHeadquarters
- HQ city
- Holzkirchen
- HQ country
- Germany
- HQ region
- Europe
Offices4 records
Markets served
ISKA Infrastruktur business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Infrastructure Construction Projects: Project-based revenue from construction services including canal construction, pipeline construction, cable civil engineering, fiber optic expansion, and surface restoration. Projects range from small-scale installations to large municipal infrastructure projects. Revenue is one-time per project with potential for follow-up maintenance contracts.
- Maintenance and Service: Ongoing maintenance services for existing infrastructure including repair work, pipe rehabilitation, and technical preparation for geothermal projects. Provides recurring revenue through long-term framework contracts with utilities.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Project-based construction services |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
ISKA Infrastruktur product offering
Product offeringCore offering
ISKA Infrastruktur GmbH is a specialized civil engineering and infrastructure construction company providing turnkey underground construction services to municipalities, energy utilities, and telecommunications providers in Germany. The company executes canal construction, pipeline construction for gas/water/district heating/cooling, cable civil engineering, fiber optic network expansion, surface restoration, and trenchless horizontal drilling projects from planning through commissioning.
Product overview
ISKA Infrastruktur GmbH is a civil engineering and infrastructure construction company offering a unified portfolio of specialized construction services. The company provides six core service lines: Kanalbau (canal construction) for sewage and drainage systems, Rohrleitungs- und Anlagenbau (pipeline and plant construction) for gas, water, district heating and cooling, Kabeltiefbau Energy (cable civil engineering) for power and data cable infrastructure, Glasfaserausbau (fiber optic expansion) for telecommunications networks, Oberflächenbau (surface construction) for road and pavement restoration, and Horizontalbohrungen und Spezialtiefbau (horizontal drilling and special civil engineering) for trenchless pipe installation. These services are delivered as integrated project solutions from planning through execution to commissioning, supported by over 280 specialized employees, 52 independent construction teams, and a fleet of 93 trucks, excavators and loaders across 4 locations.
Differentiator
Problem solved
Functional benefit
Products and services
- Kanalbau (Canal Construction)
Quantifiable outcome
- Over 10,000 km fiber route constructed per year (group-wide)
- +3 more outcomes
Companies that use ISKA Infrastruktur
Customer profileNamed customers5 records
Segments3 records
Ideal customer profiles3 records
ISKA Infrastruktur technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
ISKA Infrastruktur partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- vitronet GruppecoreISKA Infrastruktur GmbH became part of the vitronet Gruppe in 2020, along with KronoBau GmbH. Vitronet is Germany's leading service provider for telecommunications and energy infrastructure with over 2,700 employees at more than 40 locations. The group delivers turnkey services from consulting and planning through construction and installation to documentation, service and maintenance.
Scale indicators8 records
Recent moves8 records
Expansion highlights5 records
ISKA Infrastruktur competitors and assessment
Company assessmentDirect peers
- Leonhard Weiss GmbH & Co. KG: Major German construction company with significant Tiefbau and infrastructure operations including road, rail, and utility networks. Comparable to ISKA in service breadth and German-market focus, though at substantially greater scale.
- Matthäi Bauunternehmen GmbH & Co. KG: German infrastructure construction company with Tiefbau, road construction and specialized civil engineering services across multiple German regions. Comparable to ISKA in service scope and German market footprint.
- JOHANN BUNTE Bauunternehmung GmbH & Co. KG: German infrastructure and civil engineering company focused on roads, bridges and utility networks with national footprint. Comparable to ISKA in service offering and contract type, though operating at larger scale.
- LUDWIG FREYTAG GmbH & Co. KG: Oldenburg-based German civil engineering and infrastructure construction contractor with comparable Tiefbau, pipeline and utility-network service scope. Highly comparable to ISKA in service mix and German-market focus.
- Geiger Gruppe: Family-owned Bavarian civil engineering and infrastructure construction group. Comparable to ISKA in southern-German geographic focus and similar service portfolio spanning utility and municipal infrastructure.
- Max Bögl Bauunternehmung GmbH & Co. KG: Major German construction company with infrastructure, civil engineering and energy/wind capabilities. Directly comparable to ISKA's Tiefbau and utility-network services — notably, ISKA MD Helmut Beyer built much of his career at Max Bögl.
- Wacker Bau GmbH: German civil engineering company focused on infrastructure and Tiefbau with comparable scale and service offering. Similar in size to ISKA and a direct competitor for medium-sized municipal and utility framework agreements.
- Eiffage Infra-Süd GmbH: German southern-Germany subsidiary of French Eiffage group performing infrastructure and civil engineering. Directly comparable to ISKA in geography and service overlap — Helmut Beyer founded and led Eiffage Infra-Süd as MD before joining ISKA in 2022.
- Rädlinger ZT GmbH: Bavarian civil engineering and infrastructure construction company with comparable service mix to ISKA. Geographic overlap in southern Germany makes it a direct regional competitor for municipal and utility contracts.
Regional players
- Sonntag Baugesellschaft mbH: German construction company with regional southern-Germany focus. Comparable service portfolio to ISKA but with more limited geographic reach, making it a regional rather than direct national competitor.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights5 records
Customer concentration
ISKA Infrastruktur social profiles
Digital presenceISKA Infrastruktur compliance and trust
Trust signalCompliance5 records
ISKA Infrastruktur financial estimates
Financial estimateRevenue estimate
Valuation estimate
ISKA Infrastruktur leadership team
Management profileNumber of profiles
Profiles3 records
ISKA Infrastruktur funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ISKA Infrastruktur 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 ISKA Infrastruktur
What does ISKA Infrastruktur do?
ISKA Infrastruktur GmbH is a specialized civil engineering and infrastructure construction company providing turnkey underground construction services to municipalities, energy utilities, and telecommunications providers in Germany. The company executes canal construction, pipeline construction for gas/water/district heating/cooling, cable civil engineering, fiber optic network expansion, surface restoration, and trenchless horizontal drilling projects from planning through commissioning.
Is ISKA Infrastruktur a public or private company?
ISKA Infrastruktur is a private company. It is classified as corporate owned and is currently operating.
When was ISKA Infrastruktur founded?
ISKA Infrastruktur was founded in 1961. It employs 11 to 50 people.
Where is ISKA Infrastruktur based?
ISKA Infrastruktur is headquartered in Holzkirchen, Germany, in the Europe region.
How does ISKA Infrastruktur make money?
Two revenue lines are on record. Infrastructure Construction Projects are the primary driver. The others are maintenance and Service.
Who are ISKA Infrastruktur's main competitors?
Direct peers on record are Leonhard Weiss GmbH & Co. KG, Matthäi Bauunternehmen GmbH & Co. KG, JOHANN BUNTE Bauunternehmung GmbH & Co. KG, LUDWIG FREYTAG GmbH & Co. KG, Geiger Gruppe, Max Bögl Bauunternehmung GmbH & Co. KG, Wacker Bau GmbH, Eiffage Infra-Süd GmbH and Rädlinger ZT GmbH. Sonntag Baugesellschaft mbH is listed as a regional player.
Does ISKA Infrastruktur have an API?
No public API is recorded for ISKA Infrastruktur.
What industry is ISKA Infrastruktur in?
ISKA Infrastruktur's product category is Civil Engineering & Infrastructure Construction. Its primary akta.pro industry code is IMAFAGAE, Storage & Conveyance Structures (Reservoirs, Tanks, Culverts, Tunnels), with a secondary code of EUAEACAA, Overhead Distribution Line Construction (MV/LV). Its NAICS code is 2371 and its SIC code is 1623.