01
Finance & Control
- Outgoing and incoming invoices
- Cash and bank
- Open items and reminders
- Recurring invoices
- P&L and management reporting
- Procurement and expenses
- DATEV export
- XRechnung and ZUGFeRD support
LIVE BUSINESS OPERATING SYSTEM
The Operating System Behind a Multi-Company Group
BauERP — unifies operations, finance, projects and people in a single system.
A live Business Operating System running construction, property management, finance, HR, sales and digital operations on a shared data and control architecture.
Verified Scale
- 7
- Core Module Groups
- 17
- Automated Scheduled Jobs
- 15+
- Isolated GmbH/KG entities
- 3
- UI Languages · EN · DE · TR
- 5 min
- Accounting Sync
- Hourly
- Bank Reconciliation
The Business Problem
Construction and real estate groups all live the same story.
Knowledge is scattered across spreadsheets, emails, messaging apps, separate accounting tools, paper documents and the memory of individual staff.
That fragmentation produces late decisions, duplicate work, weak controls, and heavy dependency on individuals.
BauERP was built to replace that fragmentation with a single operating model.
Operating Model
One architecture. Seven module groups.
Not separate departments — different faces of the same system.
02
Real Estate & Assets
- Buildings and units
- Leases and payments
- Deposits
- Operating cost calculation
- Budget tracking
- Maintenance requests
- Vacancy control
- Tenant portal
03
Construction Projects
- Project progress
- Site journal
- Photo and video archive
- Material planned / actual
- Contractors
- Mandatory document tracking
04
Sales & Real Estate
- CRM and leads
- Portfolio objects
- Customer pool
- Exposé generation
- Location analysis
- Investment / deal evaluation
- Quotes
05
People & Workforce
- Personnel records
- Time tracking
- Shift planning
- Leave
- Payroll-adjacent flows
- Role-based document packages
06
Social & Digital Operations
- Account analytics
- Content production workflow
- Publishing calendar
- Staff reporting
- Content analysis
- Weekly PDF reporting
07
System, Governance & Control
- Users
- Role permission matrix
- Company-based rights
- Menu visibility
- Audit trail
- Document management
- Operations handbook
How the System Works
A layered architecture. One shared data foundation.
- 01User Interface
- 02Authentication
- 03Role Permission Gate
- 04Company Scoping / Entity Isolation
- 05Business Services
- 06Shared Data Layer
- 07Audit Log & Live Updates
Technical Foundation
- React + TypeScript UI
- FastAPI backend
- SQLAlchemy
- SQLite (WAL mode)
- JWT authentication
- Role-based authorization
- Company and portal isolation
- Audit log
- Live updates via WebSocket
Security & Governance
Access and control were not added later. They were designed in.
01
Authentication
Every access starts from a verified session.
02
Role-Based Permission
Rights attach to the role, not the individual.
03
Company / Entity Isolation
Data of 15+ GmbH/KG stays separated inside the same system.
04
Portal Isolation
Tenants, staff and management operate on separate surfaces.
05
Audit Log
Critical actions leave a traceable record.
06
Financial Visibility Controls
Who can see which numbers is explicitly defined.
07
Deployment Controls
Sensitive routes cannot ship unprotected.
Not a claim of absolute security — evidence that governance is built into the operating model.
Automation Engine
17 scheduled jobs running in the background.
Tasks that keep the system alive without human intervention.
- AI-assisted daily construction report from field communication and media
- Recurring invoice draft generation
- Overdue item and deadline checks
- Correction and consistency checks
- Accounting sync (every 5 minutes)
- Hourly bank reconciliation
- Workforce and activity reports
- Weekly and monthly real estate and social reports
- Media archiving
24-Hour Automation
00
03
06
09
12
15
18
21
24
Accounting & Payment Control
From source to bank reconciliation — an auditable flow.
- 01Source Data
- 02Validation
- 03Invoice Booking
- 04Accounting Sync
- 05Bank Reconciliation
- 06Open Items / P&L Reporting
- OCR invoice ingestion
- Google Sheets accounting sync (5 min)
- Hourly bank reconciliation
- DATEV export
- XRechnung
- ZUGFeRD
- Audit trail
- Payment-lock protection
Real Impact
Not theoretical — running in live operations.
- 15+ separate GmbH/KG managed inside a single isolated architecture
- 17 scheduled automated jobs
- Accounting sync every 5 minutes
- Hourly bank reconciliation
- 3 UI languages
- Around 42 GB of disk freed by a single media-archive optimization
- Role- and company-based access controls
- Automated reporting and audit trail
Why This Matters
Not software. An operating model.
BauERP combines engineering discipline, executive experience, financial control and AI-assisted development. It does not squeeze operations into generic software — it builds software around a real operating model.
“BauERP is the point where management and operational experience turn into software.”