What PST Spezialtiefbau Süd GmbH does

PST Spezialtiefbau Süd GmbH is a German specialist foundation engineering contractor (Spezialtiefbau) headquartered in Augsburg and operating as a wholly-owned subsidiary of the WOLFF & MÜLLER Group. Founded in 1985 as Preussag Spezialtiefbau GmbH and re-established in 2002 under WOLFF & MÜLLER ownership after the Babcock-Borsig insolvency, the company has over 35 years of experience executing technically demanding sub-surface work including bored piles (Bohrpfähle), anchors (Anker), construction pit security (Baugrubensicherung), and trenchless construction. PST operates a fleet of approximately 18 large drilling rigs from Liebherr and Klemm (4–165 tonnes) and deploys GPS-supported surveying, digital performance time recording, Liebherr's MyJobsite site documentation software (co-developed with PST), and Dalux-based BIM workflows. A distinctive sustainable product, R-Beton, uses 100% recycled aggregate with low-clinker cement and is produced on-site via mobile mixing plants.

The company serves public-sector infrastructure clients — most prominently Deutsche Bahn (DB InfraGO AG) on rail expansion projects including the Karlsruhe–Basel high-speed line, as well as municipalities such as the City of Heilbronn on the Nordumfahrung project — alongside private developers (e.g., Klinikum Stuttgart, shopping centre developer in Lutherstadt Wittenberg). Revenue is generated through VOB/BGB-compliant public tenders and direct commercial negotiations with private developers/industrial customers, with project-based contracting and reference projects across Germany and neighboring countries. The company operates through its Augsburg headquarters and Geschäftsstellen in Stuttgart (relocated from Ludwigsburg in early 2026) and Cologne (opened July 2025), and forms ARGE (Arbeitsgemeinschaft) joint ventures with WOLFF & MÜLLER sister companies GKT, Häring, and SGS for large-scale infrastructure projects.

The business model is sales-led B2B specialist contracting with a "Baupartner" (construction partner) philosophy emphasizing long-term partnerships rather than one-off transactions. Pricing is project-specific and not publicly disclosed; contracts are multi-year for major infrastructure projects. PST benefits from WOLFF & MÜLLER group-wide sales infrastructure and a financial backstop, with the parent group posting €1.092 billion in 2025 revenue and a €1.071 billion order backlog providing forward visibility. The company is certified for DB prequalification, ISO 9001, welding (DVS), and holds the GÜB quality mark — credentials required to bid on VOB-governed public tenders.

Name

PST Spezialtiefbau Süd GmbH

Legal name

PST Spezialtiefbau Süd GmbH

Website

https://pst-sued.de

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

11–50 employees

Short description

PST Spezialtiefbau Süd GmbH is a German specialist foundation engineering contractor providing bored piles, anchors, and construction pit security to public infrastructure clients (Deutsche Bahn, municipalities) and private developers, operating as a subsidiary of WOLFF & MÜLLER.

Ownership category

akta.pro rank

Product category

Specialty Foundation Engineering Services

NAICS

Foundation, Structure, and Building Exterior Contractors (2381)

SIC

Heavy Construction Other Than Bldg Const - Contractors (1600)

akta.pro primary industry

Foundations & Geotechnical Works (Piles, Anchors, Ground Improvement) (EUAMAFAB)

akta.pro secondary industry

Public Works General Contracting (IMAFAAAG)

Keywords

• Special foundation engineering
• Bored pile construction
• Construction pit security
• Ground anchoring services
• Recycled concrete products

Headquarters

HQ city

Augsburg

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Specialist Foundation Construction Services: PST generates revenue through project-based contracts for specialist underground construction services including bored piles, anchors, and construction pit security. Projects are typically awarded through public tenders or direct negotiation with private developers. Revenue is project-based and non-recurring in nature.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

PST Spezialtiefbau Süd GmbH is a specialty foundation engineering (Spezialtiefbau) contractor that plans and executes bored piles (Bohrpfähle), ground anchors (Anker), construction pit security (Baugrubensicherung) and related deep-foundation works for public infrastructure and private developers. It complements execution with planning/consulting services and a sustainable concrete product, R-Beton, made with 100% recycled aggregate and produced on-site via mobile mixing plants. Projects are delivered through competitive public tendering and direct negotiation, supported by a modern fleet of 18 large Liebherr and Klemm drilling rigs and digital site-documentation tools.

Product overview

PST Spezialtiefbau Süd GmbH is a specialized foundation engineering (Spezialtiefbau) company offering a unified portfolio of services spanning planning, execution, and project references. The core products are Planung und Bau (planning and consulting) and Ausführung/Schlüsselfertige Baugrube (turnkey excavation as a complete delivery), supplemented by the R-Beton sustainable concrete product — a recycling-based concrete with 100% recycled aggregate produced via mobile on-site mixing — and a Digitalisierung initiative powered by tools such as Liebherr MyJobsite and Dalux BIM. The Gottlob-Müller-Prinzip Nachhaltigkeitsstrategie provides the overarching sustainability framework. All services are delivered under the E.P.I. principle (Effektiv. Partnerschaftlich. Innovativ.) within the WOLFF & MÜLLER family enterprise.

Differentiator

Problem solved

Functional benefit

Products and services

• Planung und Bau (Planning and Construction) Specialized foundation engineering consulting and planning services that leverage practical experience to optimize the economics and quality of construction projects, offering tailored advice and customized planning solutions for public-sector and private clients.
• Ausführung — Schlüsselfertige Baugrube (Turnkey Construction Pit) Complete execution services for excavation and foundation construction, including turnkey construction pits (Schlüsselfertige Baugrube) as a core competency, delivering customized solutions that significantly reduce project time and cost for clients.
• R-Beton (Recycling Concrete) Sustainable concrete product using 100% recycled aggregate and low-clinker cement, produced on-site with a mobile mixing plant. R-Beton exceeds the DIN 1045-2 limit of 45% recycled aggregate and is used for bored piles up to 16 m depth; successfully deployed at the Levelingstraße project in Munich with approximately 5,000 m² of concrete produced on-site.
• Referenzen (Project References Portfolio) Portfolio of completed specialized foundation engineering projects across Germany and neighboring countries, covering bored piles, anchors, diaphragm walls and complex foundation systems, used to showcase execution capability to prospective public-sector and private clients.

Quantifiable outcome

• 70 metres of bored pile per day achieved with the Liebherr LB 24-270 at Klinikum Stuttgart project
• +3 more outcomes

Named customers4 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

Integration2 records

Feature5 records

Partnerships

Six partnerships are on record, tiered core and strategic.

• WOLFF & MÜLLER Tief- und Straßenbau GmbH & Co. KGcoreStrategic or Co-development PartnerPST Spezialtiefbau Süd is a 100% subsidiary of WOLFF & MÜLLER Tief- und Straßenbau. PST was acquired in 2002 after the Babcock-Borsig AG bankruptcy and operates as the group's specialist deep foundation entity. WOLFF & MÜLLER group had 2025 annual performance of 1.092 billion EUR with 2,250 employees across 24+ locations.
• Häring Spezialtiefbau GmbH & Co. KGcoreStrategic or Co-development PartnerSince October 2025, WOLFF & MÜLLER holds 50% stake in Häring Spezialtiefbau and Spezial-Grundbau-Service Bau. The portfolios complement each other: PST and GKT bring expertise in construction pit security and drilling technology; Häring brings expertise in sheet piling, ramming procedures, and established rail construction sites.
• SGS Spezial-Grundbau-Service BaucoreStrategic or Co-development PartnerSince October 2025, WOLFF & MÜLLER holds 50% stake in SGS Spezial-Grundbau-Service Bau. SGS focuses on complementary activities supporting the special deep foundation portfolio alongside PST, GKT, and Häring.
• GKT Spezialtiefbau GmbHcoreStrategic or Co-development PartnerGKT Spezialtiefbau is a 100% subsidiary of WOLFF & MÜLLER, forming the northern German counterpart to PST's southern operations. Together, PST and GKT provide comprehensive nationwide coverage for specialist deep foundation services.
• LiebherrstrategicTechnology or IntegrationPST operates Liebherr drilling equipment (LB 16, LB 24-270, LB 28-320, LRB 355) and co-developed the MyJobsite digital construction site documentation software with Liebherr. Liebherr provides equipment training, technical support, and parts supply.
• Klemm Bohrtechnik GmbHstrategicTechnology or IntegrationPST operates Klemm anchor drilling equipment (KR 806-3G, KR 806-3 DK) supplied by Klemm Bohrtechnik. Equipment features modern hydraulic systems, radio remote control, and advanced emission control technology.

Scale indicators8 records

Recent moves17 records

Expansion highlights5 records

Direct peers

• Keller Group plc: Global geotechnical specialist contractor offering piling, ground improvement, and earth retention across infrastructure and building projects; comparable business model and end-markets to PST as a specialist deep foundation contractor.
• Bauer AG: One of Germany's largest specialty foundation contractors, offering bored piles, anchors, diaphragm walls, and ground improvement across infrastructure, energy, and commercial projects—directly comparable to PST's specialist Spezialtiefbau offering.
• GKT Spezialtiefbau GmbH: Direct peer and sister company within the WOLFF & MÜLLER group, providing specialist deep foundation services (bored piles, anchors, construction pit security) in Northern Germany—complementary to PST's Southern Germany footprint.
• Trevi Group: Italian-headquartered global geotechnical contractor covering foundations, soil improvement, and specialty works for infrastructure; comparable in specialty service mix and project scale to PST.
• Häring Spezialtiefbau GmbH & Co. KG: German specialist foundation contractor focused on sheet piling, ramming, and rail-construction foundations; now a 50%-owned partner of WOLFF & MÜLLER, complementing PST's drilling-pile and anchor focus.

Broad incumbents

• Implenia AG: Swiss-based construction group with specialist civil engineering and foundation engineering capabilities across buildings and infrastructure; comparable end markets but wider service portfolio.
• HOCHTIEF AG: Tier-1 German-headquartered international construction group with significant civil and infrastructure operations; competes for large public tenders where PST typically bids through ARGE working groups.
• Max Bögl: Large German family-owned construction group active in civil engineering, infrastructure, and foundations—including bored pile and ground improvement work directly overlapping with PST's service portfolio.
• Strabag AG / Ed. Züblin AG: Large established German/Austrian construction groups with substantial specialty foundation divisions; broader portfolio than PST but directly competing on the same large infrastructure tenders.

Others

• Liebherr (foundation equipment division): Strategic equipment supplier and co-developer of the MyJobsite digital construction site platform used by PST; relevant as an ecosystem partner shaping fleet standardisation and digital tooling in the Spezialtiefbau sector.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/playlist?list=PLSJVNx9VVj2ik7y7KNA6OYqydCFhlYLQy
• Facebookfacebook.com/wolffundmueller
• LinkedInlinkedin.com/company/pstspezialtiefbausuedgmbh
• Instagraminstagram.com/wolffundmueller

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 PST Spezialtiefbau Süd GmbH