- Home
- Construction Estimating Software
- OpenConstructionERP
OpenConstructionERP
What it is
OpenConstructionERP is construction cost estimation and project management software for quantity takeoff, BOQ preparation, tendering, project execution, quality management, and financial control. Its BOQ tools organize hierarchical sections, positions, resources, and assemblies, with automatic markups. Documentation describes 120,000+ cost items across 48 market editions and 36 regional databases ready to import. Quantity extraction from RVT, IFC, DWG, and DGN files is supported through DDC converters. Scheduling tools include Gantt planning with CPM, Earned Value Management, S-curve, and Monte Carlo simulation. A REST API supports integrations and custom workflows, and Excel, CSV, and GAEB XML import and export are documented. The Common Data Environment includes ISO 19650 status workflows, revision management, and role-based access controls. The maker says self-hosted project data remains on the customer's hardware and that the platform does not upload files or phone home. The self-hosted plan is free under AGPL-3.0; listed paid offerings include databases, converters, licences, and implementation. Desktop downloads list Windows 10/11 64-bit, macOS 10.15+ on Apple Silicon, and 64-bit Linux.
For and against
For
- BOQ tools include assemblies and automatic markups
- Documentation describes 120,000+ cost items
- Planning includes CPM, Earned Value Management, and Monte Carlo simulation
- Self-hosted project data stays on the customer's hardware
Against
- DDC converters are a separately listed paid offering
- Commercial licence is listed at €2,500 one-time
- Desktop downloads list specific supported operating systems
The verdict
OpenConstructionERP covers construction estimating and project workflows, with a free self-hosted plan and a documented range of import, export, and planning tools. Check the supported desktop systems and separately priced offerings if your workflow requires converters or commercial licensing.
Who it suits
OpenConstructionERP is intended for construction teams, including general contractors, specialist subcontractors, and quantity surveying teams. It suits teams needing estimating, project management, and self-hosted data control.
Plans and prices
Self-hosted
AGPL-3.0 · 120,000+ cost items · 190+ modules · no seat count
Read 15 Oct 2026 · openconstructionerp.com
CWICR cost database
per region · 55,000+ items
Read 15 Oct 2026 · openconstructionerp.com
Priority SLA
priority support
Read 15 Oct 2026 · openconstructionerp.com
cad2data converters
commercial converter licence
Read 15 Oct 2026 · openconstructionerp.com
Commercial licence
per company · unlimited users
Read 15 Oct 2026 · openconstructionerp.com
Implementation
custom implementation
Read 15 Oct 2026 · openconstructionerp.com
White-label
up to 10 tenants
Read 15 Oct 2026 · openconstructionerp.com
DDC cad2data converters
RVT, IFC, DWG and DGN converters · per-server or embedded SDK licence
Read 29 Sep 2026 · openconstructionerp.com
White-label SaaS
Up to 10 paying organisations · +€1,500 per extra 10
Read 29 Sep 2026 · openconstructionerp.com
On the record
- API scope
- Documented endpoints cover authentication, projects, BOQs, cost search, AI quick estimates, CAD extraction and health checks.openconstructionerp.com · read 15 Oct 2026
- Built-in modules
- The product advertises more than 190 built-in modules that can be enabled or extended.openconstructionerp.com · read 15 Oct 2026
- CAD and BIM
- The platform supports quantity extraction from RVT, IFC, DWG and DGN via DDC converters.openconstructionerp.com · read 29 Sep 2026
- Commercial management
- The platform includes RFIs, variations, submittals, contracts, inspections, punch lists, non-conformance records, cash flow and payment applications.openconstructionerp.com · read 15 Oct 2026
- Company legal setup
- The imprint identifies OpenConstructionERP as an AGPL-3.0 project represented by founder and developer Artem Boiko in Graben-Neudorf, Germany.openconstructionerp.com · read 15 Oct 2026
- Company profile
- LinkedIn lists DataDrivenConstruction as a public software-development company founded in 2023 with 2–10 employees and headquarters in Bruchsal-Untergrombach, Germany.linkedin.com · read 15 Oct 2026
- Compliance workflow
- Its Common Data Environment documents ISO 19650 status workflows, revision management and role-based access controls.openconstructionerp.com · read 29 Sep 2026
- Cost data
- The documentation describes 120,000+ cost items across 48 market editions, with 36 regional databases ready to import.openconstructionerp.com · read 29 Sep 2026
- Cost estimating
- Its rate library stores minimum, average and maximum values and can price bills from regional unit and composite rates.openconstructionerp.com · read 15 Oct 2026
- Data library
- The documentation describes more than 120,000 priced items spanning more than 40 regions and 44 interface languages.openconstructionerp.com · read 15 Oct 2026
- Documentation
- The documentation covers installation, BOQ editing, cost databases, CAD/BIM takeoff, AI estimation, scheduling, finance, procurement, quality, safety, BIM, reporting, modules and API configuration.openconstructionerp.com · read 15 Oct 2026
- Estimating
- Its BOQ tools include hierarchical sections, positions, resources, assemblies and automatic markups.openconstructionerp.com · read 29 Sep 2026
- Extensibility
- Modules are Python packages with manifests and can be scaffolded with oe-sdk or make module-new; hooks, events, permissions and validation are exposed to extensions.github.com · read 15 Oct 2026
- File formats
- The product lists IFC, DWG, DGN, RVT, DXF, GLB, GAEB XML, BC3, BCF, XER, XLSX, CSV, JSON, Parquet and PDF exchange.openconstructionerp.com · read 15 Oct 2026
- Independent community praise
- A Reddit construction commenter recommended it as open-source, construction-focused software with native job costing, purchase orders, financials and project management without licensing costs.reddit.com · read 15 Oct 2026
- Independent description
- OpenSourceTools.org calls it the most complete of three construction-specific open-source options, combining estimates, schedules, tenders, contracts, site tasks, reports, BOQ, 4D scheduling, 5D control and CAD/BIM takeoff.opensourcetools.org · read 15 Oct 2026
- Independent maturity limit
- OpenSourceTools.org characterizes the project as ambitious, recently released and not yet a mature all-in-one replacement for commercial suites.opensourcetools.org · read 15 Oct 2026
- Integrations
- Listed connections include Excel, SAP, DATEV, Xero, Revit, AutoCAD, MicroStation, SharePoint, Google Drive, Dropbox, Nextcloud, Power BI, Tableau, Metabase, MS Project, n8n, Zapier and Make.openconstructionerp.com · read 15 Oct 2026
