SAX + KLEE

What SAX + KLEE does

SAX + KLEE GmbH Bauunternehmung is a family-owned civil engineering and underground infrastructure contractor headquartered in Mannheim, Germany, founded in 1909 and now in its fifth generation of Sax and Burger family ownership. Its service portfolio spans civil engineering (Tiefbau), road construction (Straßenbau), pipeline construction (Rohrleitungsbau), cable conduit construction (Kabelleitungsbau), industrial construction (Industriebau), well construction (Brunnenbau), and environmental technology (Umwelttechnik, including contaminated-site remediation). Differentiated technical capabilities include sheet pile and soldier pile earth retention, truck-mounted vibration hammers, groundwater lowering at significant depths, sensor-controlled bituminous paving up to 6.50 m without center joint, and geothermal well drilling. The holding structure comprises five affiliated companies with approximately 850 employees group-wide, of which the main Bauunternehmung entity accounts for over 500.

The company serves large industrial enterprises (BASF, Roche, Merck, Daimler AG, Creos Deutschland), municipal utilities (Stadtwerke Mannheim), and city governments (City of Mannheim), operating primarily in the Metropolregion Rhein-Neckar with branch offices in Heidelberg and Ludwigshafen. Revenue is generated through a mix of competitive-bid project work and long-term framework/standby service contracts with utilities and industrial clients, complemented by environmental consulting and certified waste management services. GTM is direct enterprise sales targeting key accounts; pricing is project-specific and quote-based. The company is certified to DIN EN ISO 9001, DIN EN ISO 14001, SCC**, the prequalification registry, and holds Entsorgungsfachbetrieb status, all of which are gating credentials for industrial and public-sector work in the region. A 30+ year in-house apprenticeship program across 10+ trades underpins its workforce pipeline, and the most recent leadership transition occurred in early 2025 when Alexander Sax took over commercial management from Kai-Uwe Sax.

Name

SAX + KLEE

Legal name

Sax + Klee GmbH Bauunternehmung

Website

https://sax-klee.de

Company type

Private

Founded year

1909

Operating status

Operating

Headcount range

11–50 employees

Short description

SAX + KLEE is a 115-year-old, family-owned German civil engineering contractor based in Mannheim, delivering underground infrastructure, pipeline, road, industrial, well-drilling, and environmental remediation services to industrial enterprises and municipal utilities in the Rhine-Neckar region.

Ownership category

akta.pro rank

Product category

Civil Engineering and Underground Infrastructure Construction Services

NAICS

Water and Sewer Line and Related Structures Construction (23711), Oil and Gas Pipeline and Related Structures Construction (23712)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623), Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Non-Potable/Industrial Water Conveyance Pipelines (Bulk/Interbasin) (TLAGAHAC)

Keywords

• Civil engineering construction
• Pipeline construction services
• Road construction services
• Well construction services
• Environmental remediation services

Headquarters

HQ city

Mannheim

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Services - Infrastructure: One-time project-based construction services for municipal and industrial clients, including canal construction, drainage systems, water and gas supply networks, pipeline construction, road construction, cable conduit installation, industrial construction, well drilling, and environmental remediation. Revenue is generated through competitive bidding on public and private sector projects.
2. Long-term Service Contracts: Recurring service framework agreements with major regional energy providers and industrial companies, including on-call and standby repair services. These contracts provide predictable recurring revenue streams and strengthen client relationships.
3. Environmental Services: Environmental consulting and remediation services including site investigation, remediation concept development, and execution of groundwater and soil remediation projects. Services also include waste disposal through certified waste management facility.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

SAX + KLEE is a civil engineering and underground infrastructure construction company performing canal, road, pipeline (water, gas, district heating, cable conduit), industrial, sewer, and well construction, together with contaminated-site environmental remediation. The company delivers projects from a single source using its own personnel and specialized equipment, serving municipal utilities, public-sector clients, and large industrial operators in the Rhine-Neckar metropolitan region.

Product overview

SAX + KLEE is a civil engineering and construction company offering a comprehensive portfolio of infrastructure services. The company operates as a single unified service provider rather than a platform product. The core offerings span Tiefbau (civil engineering), Straßenbau (road construction), Rohrleitungsbau (pipeline construction), Kabelleitungsbau (cable conduit construction), Industriebau (industrial construction), Brunnenbau (well construction), and Umwelttechnik (environmental technology). All services are delivered with the company's own personnel and equipment, providing customers with complete solutions from a single source in the Rhine-Neckar metropolitan region.

Differentiator

Problem solved

Functional benefit

Products and services

• Tiefbau (Civil Engineering) Civil engineering services including canal construction, earthworks, and shoring work. The company performs concrete, reinforced concrete, insulation, and coating work with its own specialized personnel and equipment.
• Straßenbau (Road Construction) Construction and maintenance of roads and paths for all types of use, including large-area bitumen paving with widths up to 6.50 m without center seam using electronic sensor-controlled road pavers.
• Rohrleitungsbau (Pipeline Construction) Specialty area covering district heating, water, gas pipeline, cable conduit, and plant construction, providing complete services including all civil engineering and surface work from a single source.
• Kabelleitungsbau (Cable Conduit Construction) Cable conduit construction services including cable pulling, plant construction, and work under voltage (Arbeiten unter Spannung, AuS).
• Industriebau (Industrial Construction) Service-oriented industrial construction capable of covering nearly the entire civil engineering segment, including contaminated areas, provided from a single source for industrial clients in the Rhine-Neckar region.
• Brunnenbau (Well Construction) Well construction services including exploration and investigation borings, small and large bored piles, groundwater measuring points, groundwater lowering, shallow and deep wells, geothermal drilling, well service, well rehabilitation, well decommissioning, hydrological well testing, and well regeneration.
• Umwelttechnik (Environmental Technology) Environmental technology services including contaminated site investigation, remediation concept development, execution of comprehensive groundwater and soil remediations, treatment of water, soil and air, and area recycling / demolition / disposal through a certified waste management facility.
• Kanalbau (Sewer Construction) Sewer construction as part of civil engineering services, including canal construction and related drainage infrastructure for municipal and industrial clients.

Named customers7 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered subsidiary and group partner.

• Gebrüder Stephan GmbH & Co. KGsubsidiaryOthersPart of the SAX + KLEE group of companies. Located at Rheinhorststraße 9, 67071 Ludwigshafen. Specialized industrial services provider within the holding structure.
• OBRA Bautenschutz GmbHsubsidiaryOthersPart of the SAX + KLEE group of companies. Located at Max-Born-Str. 17, 68169 Mannheim. Building protection specialist company within the holding structure.
• Heinrich Eisinger Industriedienste GmbHsubsidiaryOthersPart of the SAX + KLEE group of companies. Industrial services provider within the holding structure.
• ICA - Institut für Chemische Analytik GmbHgroup partnerOthersLocated at Naumburger Straße 29, 04229 Leipzig. Chemical analysis institute providing analytical services. Partner within the SAX + KLEE group ecosystem for environmental testing and analysis.

Scale indicators5 records

Recent moves11 records

Expansion highlights5 records

Broad incumbents

• STRABAG SE: Major Austrian-headquartered construction group with extensive German operations in civil engineering, pipeline, and infrastructure construction; broad incumbent with overlapping capabilities.
• Bilfinger SE: Large German industrial services and construction group serving process industry clients (including BASF, Roche-type customers) with broader geographic and service scope than SAX + KLEE.
• HOCHTIEF AG: One of Germany's largest construction companies with diversified infrastructure, civil engineering, and pipeline capabilities; broad incumbent competitor for large public and industrial contracts.

Direct peers

• Max Bögl Bauunternehmen GmbH & Co. KG: Large German family-owned construction company with similar civil engineering, infrastructure, and pipeline capabilities; comparable ownership profile and vertically integrated operating model.
• Matthäi Bauunternehmen GmbH & Co. KG: German civil engineering contractor specializing in road construction, pipeline construction, and infrastructure projects. Comparable regional service mix and customer profile (municipal utilities and industrial clients).
• Depenbrock Bau GmbH & Co. KG: Mid-sized German construction company offering civil engineering, road, and infrastructure construction services; comparable regional contractor profile.
• Leonhard Weiss GmbH & Co. KG: German family-owned construction company offering an almost identical mix of Tiefbau, Straßenbau, Rohrleitungsbau, and Ingenieurbau across multiple German regions. Closest analog by ownership structure, service portfolio, and customer type.
• Baresel GmbH: German civil engineering and infrastructure contractor (subsidiary of Leonhard Weiss) focused on road, bridge, and pipeline construction; directly comparable service offering in underground infrastructure.
• Heitkamp Unternehmensgruppe: German civil engineering and infrastructure construction group with comparable capabilities in pipeline, road, and heavy construction serving municipal and industrial clients.
• Köster GmbH: German general contractor focused on building, civil engineering, and infrastructure construction with comparable portfolio breadth across pipeline, road, and industrial construction.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@saxklee

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries2 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 SAX + KLEE