BauSU Software

What BauSU Software does

Bau-Software Unternehmen GmbH, operating as BauSU Software, is a German privately held software company that has developed, sold, and supported a modular ERP system exclusively for the construction industry since 1979. Headquartered in Wedemark near Hannover and operating eight regional offices across Germany plus one in Austria, BauSU targets German-speaking construction companies (Baugewerbe) of varying sizes with an integrated suite covering construction payroll (Bau-Lohnbuchhaltung), financial accounting (Bau-Finanzbuchhaltung), operations and post-calculation control (Bau-Betriebssteuerung), cost calculation and quotation (Kalkulation/Angebot), measurement and billing (Aufmaß/Abrechnung), materials management (Materialwirtschaft), equipment administration (Geräteverwaltung), and a browser-based mobile field application (BauSU mobil). The platform is built on a unified database that links these modules so that business, technical, and organizational processes share a single data model, and it is complemented by roughly twenty add-on modules spanning e-invoicing (eRechnung/XRechnung/ZUGFeRD), BIM-LV-Container (DIN SPEC 91350), purchasing, document management, workflow, and guarantee administration, as well as integrations to DATEV, Powerproject, DEÜV, and eSTATISTIK.core.

BauSU's commercial model is a direct, quote-based enterprise sale delivered through its nine regional offices, a central hotline, and an inquiry form on its website; pricing is not publicly disclosed. Revenue is generated primarily from software licenses and recurring maintenance or subscription fees on the integrated ERP, supplemented by paid customer support, training, and seminars. The customer base is described as "multiple thousands of installations" across individual workstations and networks at construction firms, with no publicly listed anchor logos. The company is DSGVO (GDPR) and GoBD compliant and holds a registered BauSU trademark. The firm has no disclosed parent company, subsidiaries, funding rounds, M&A activity, or management team biographies in the public materials reviewed, and operates with a headcount in the 11-50 range.

Name

BauSU Software

Legal name

Bau-Software Unternehmen GmbH

Website

https://bausu.de

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

11–50 employees

Short description

BauSU Software (Bau-Software Unternehmen GmbH) is a privately held German software company founded in 1979 that provides a modular ERP suite — including payroll, financial accounting, operations control, costing, and billing — exclusively for construction companies across Germany and Austria.

Ownership category

akta.pro rank

Product category

Construction ERP Software

NAICS

Custom Computer Programming Services (541511), Computer Systems Design Services (541512)

SIC

Services-Computer Integrated Systems Design (7373), Services-Computer Programming Services (7371)

akta.pro primary industry

Construction & Engineering ERP (Job Costing, Project Controls) (HDAEAEAE)

akta.pro secondary industries

Core ERP Suites (Financials, Procurement, Projects) (HDAEAEAA), Human Capital Management (HCM) & Payroll Platforms (HDAEAEAJ)

Keywords

• Construction ERP software
• Construction payroll software
• Construction financial accounting
• Construction project costing
• Building industry software

Headquarters

HQ city

Wiedemar

HQ country

Germany

HQ region

Europe

Offices10 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

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

Revenue model

1. ERP Software Licenses and Subscriptions: BauSU generates revenue through licensing of its modular ERP construction software. The company sells its integrated software solution for the construction industry with multiple modules including payroll, financial accounting, operations control, calculation, measurement/billing, materials management, and equipment management. Pricing is not publicly disclosed.
2. Training and Seminars: The company offers seminars and training programs for its software users, generating additional service revenue.
3. Customer Support Services: Daily customer support for consultation, care and training, as indicated on the website with hotline and remote support via TeamViewer.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

BauSU develops and sells a modular ERP software suite purpose-built for the German construction industry, with a single integrated database covering construction payroll, financial accounting, operations control, cost calculation, measurement/billing, materials management, and equipment management. The suite is delivered to construction companies via on-premise installations supplemented by a browser-based mobile web app (BauSU mobil) for on-site use, plus add-on modules for e-invoicing, BIM, DATEV export, document management, and workflow automation.

Product overview

BauSU is a modular ERP (Enterprise Resource Planning) software suite specifically designed for the construction industry, comprising a complete solution with a core platform and multiple integrated modules. The main product modules include Bau-Lohnbuchhaltung (construction payroll accounting), Bau-Finanzbuchhaltung (construction financial accounting), Bau-Betriebssteuerung (construction operations control), Kalkulation/Angebot (calculation and quotation), Aufmaß/Abrechnung (measurement and billing), Materialwirtschaft (materials management), Geräteverwaltung (equipment management), and BauSU mobil (mobile web application). These core modules are supplemented by numerous add-on modules including eRechnung/XRechnung/ZUGFeRD for electronic invoicing, BIM-LV-Container for BIM data processing, Datev-Export for DATEV integration, DMS and Workflow modules for business process management, and specialized modules for purchasing, construction daily reports, weight data import, and installation documentation. The software operates as an integrated database solution that maps business, technical, and organizational processes for construction companies, with operations spanning eight offices across Germany and one in Austria since 1979.

Differentiator

Problem solved

Functional benefit

Brands

• BauSU mobil: WEB-App for smartphone, tablet, notebook or PC, designed for use on construction sites or on the go with active internet connection.

Products and services

• Bau-Lohnbuchhaltung (Construction Payroll) Payroll accounting module developed specifically for the German construction industry, handling employee wages, social security contributions, and construction-specific collective wage-agreement (Tarif) compliance.
• Bau-Finanzbuchhaltung (Construction Financial Accounting) Financial accounting module with construction-specific features for managing the complete in-house financial bookkeeping process, including accounts payable, accounts receivable, and cost accounting.
• Bau-Betriebssteuerung (Construction Operations Control) Central operations-control module for post-calculation and control of construction sites, costs, employees, and project monitoring — the integration point for data from all other BauSU modules.
• Kalkulation/Angebot (Calculation/Quotation) Module covering the full calculation and quotation workflow: bill-of-quantities entry, costing, quote printing, individual measurement recording, invoicing, evaluation, and post-calculation.
• Aufmaß/Abrechnung (Measurement/Billing) Measurement and billing module for processing construction projects from individual measurement recording through invoicing to evaluation and post-calculation.
• Materialwirtschaft (Materials Management) Materials management module for invoicing of day-labor and unit-price work, integrated inventory management with minimum and target stock monitoring, and construction daily report capture.
• Geräteverwaltung (Equipment Management) Equipment management module for managing, querying, and evaluating all equipment-related administrative routines for construction equipment.
• BauSU mobil Browser-based mobile web application providing on-site access to BauSU ERP data on smartphones, tablets, notebooks, or PCs without requiring local installation.
• Geschäftsprozessmanagement (Business Process Management) Business process management suite combining document management (DMS BauSU Connectionserver), workflow automation, and print archiving.

Segments2 records

Ideal customer profiles1 record

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration5 records

Feature12 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• BRZ Deutschland GmbH: BRZ is a leading German provider of construction-industry IT solutions including payroll, financial accounting, and ERP software for construction firms. It is the closest direct competitor to BauSU given overlapping construction-payroll and ERP modules serving the same Mittelstand construction market.
• Nevaris (Nemetschek Group): Nevaris, part of Nemetschek, provides construction ERP and project management software (formerly NEVARIS Bausoftware) in the DACH region, covering costing, billing, payroll, and project control — directly comparable to BauSU's module suite.
• RIB Software (Schneider Electric): RIB offers iTWO and other construction ERP/estimating solutions used widely in DACH and globally. It competes with BauSU in construction costing, project management, and ERP for contractors and construction firms.
• California.pro (proALPHA / AMS): California.pro is a construction ERP solution offered in the DACH market covering payroll, financial accounting, and project costing for construction firms. It is positioned similarly to BauSU as a construction-vertical ERP.

Broad incumbents

• Sage GmbH (Sage 100 / Sage Office Line): Sage provides broader mid-market ERP/accounting software used by many German construction firms, often as a general alternative to BauSU's Bau-Finanzbuchhaltung and Bau-Lohn modules, though less construction-specific.
• Microsoft Dynamics 365 Business Central: Microsoft's mid-market ERP platform is often used by German construction firms as a generalist alternative, sometimes combined with construction-specific ISV add-ons. Represents platform-level competitive pressure on BauSU's broader ERP ambitions.
• Procore Technologies: Procore is a leading global construction project management and ERP platform. While it has limited penetration in German construction payroll, it represents the long-term cloud-ERP benchmark that BauSU's on-premise-leaning product may be measured against.

Emerging players

• 123erfasst (123erfasst.de GmbH): 123erfasst is a cloud/mobile time-tracking and construction-site documentation tool widely adopted by German construction firms. It overlaps with BauSU's BauSU mobil and Lohnstundenerfassung capabilities as a modern, mobile-first alternative.
• ToolSense: ToolSense provides a cloud platform for construction equipment and tool management, overlapping with BauSU's Geräteverwaltung (equipment management) module and representing a modern, mobile-first alternative for that use case.
• PlanRadar: PlanRadar offers mobile defect management, site documentation, and construction reporting software used by European contractors. It overlaps with BauSU's Bautagesberichte and Bau-Mängelverwaltung functionality as a modern, mobile-first alternative.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/bau-software-unternehmen-gmbh

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 BauSU Software