OpenConstructionERP

Spec sheet

What it does

OpenConstructionERP combines construction estimating, BIM and CAD takeoff, BOQs, tendering, scheduling, contracts, site work, quality, safety, finance and reporting in one self-hosted ERP.Read 15 Oct 2026 · openconstructionerp.com

Purpose

OpenConstructionERP is a construction cost estimation and project management platform covering quantity takeoff, BOQ preparation, tendering, project execution, quality management and financial control.Read 29 Sep 2026 · openconstructionerp.com

Intended users

The maker presents the product for construction teams and describes workflows spanning general contractors, specialist subcontractors and quantity surveying teams.Read 29 Sep 2026 · openconstructionerp.com

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.Read 15 Oct 2026 · openconstructionerp.com

Support

Community support is available through GitHub, documentation and the community forum; paid licences also describe email or priority support.Read 29 Sep 2026 · openconstructionerp.com

API scope

Documented endpoints cover authentication, projects, BOQs, cost search, AI quick estimates, CAD extraction and health checks.Read 15 Oct 2026 · openconstructionerp.com

Built-in modules

The product advertises more than 190 built-in modules that can be enabled or extended.Read 15 Oct 2026 · openconstructionerp.com

CAD and BIM

The platform supports quantity extraction from RVT, IFC, DWG and DGN via DDC converters.Read 29 Sep 2026 · openconstructionerp.com

Commercial management

The platform includes RFIs, variations, submittals, contracts, inspections, punch lists, non-conformance records, cash flow and payment applications.Read 15 Oct 2026 · openconstructionerp.com

Company legal setup

The imprint identifies OpenConstructionERP as an AGPL-3.0 project represented by founder and developer Artem Boiko in Graben-Neudorf, Germany.Read 15 Oct 2026 · openconstructionerp.com

Company profile

LinkedIn lists DataDrivenConstruction as a public software-development company founded in 2023 with 2–10 employees and headquarters in Bruchsal-Untergrombach, Germany.Read 15 Oct 2026 · linkedin.com

Compliance workflow

Its Common Data Environment documents ISO 19650 status workflows, revision management and role-based access controls.Read 29 Sep 2026 · openconstructionerp.com

Cost data

The documentation describes 120,000+ cost items across 48 market editions, with 36 regional databases ready to import.Read 29 Sep 2026 · openconstructionerp.com

Cost estimating

Its rate library stores minimum, average and maximum values and can price bills from regional unit and composite rates.Read 15 Oct 2026 · openconstructionerp.com

Data library

The documentation describes more than 120,000 priced items spanning more than 40 regions and 44 interface languages.Read 15 Oct 2026 · openconstructionerp.com

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.Read 15 Oct 2026 · openconstructionerp.com

Estimating

Its BOQ tools include hierarchical sections, positions, resources, assemblies and automatic markups.Read 29 Sep 2026 · openconstructionerp.com

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.Read 15 Oct 2026 · github.com

File formats

The product lists IFC, DWG, DGN, RVT, DXF, GLB, GAEB XML, BC3, BCF, XER, XLSX, CSV, JSON, Parquet and PDF exchange.Read 15 Oct 2026 · openconstructionerp.com

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.Read 15 Oct 2026 · reddit.com

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.Read 15 Oct 2026 · opensourcetools.org

Independent maturity limit

OpenSourceTools.org characterizes the project as ambitious, recently released and not yet a mature all-in-one replacement for commercial suites.Read 15 Oct 2026 · opensourcetools.org

Known bug report

GitHub issue 342 reported a sales-target form bug, a client-portal BIM-share login redirect and Telegram notifications not being delivered.Read 15 Oct 2026 · github.com

Licence

The core is released under AGPL-3.0, with a separate commercial licence offered for users that cannot use AGPL.Read 15 Oct 2026 · github.com

Limit: commercial accounting depth

OpenSourceTools.org says the depth of pay applications, retainage and lien-waiver workflows remains uncertain and recommends piloting a real project.Read 15 Oct 2026 · opensourcetools.org

Limit: regional databases

A G2 reviewer said cost databases for regions such as Latin America still need to be built.Read 15 Oct 2026 · g2.com

Limit: self-hosting workload

OpenSourceTools.org warns that operators must handle backups, updates and uptime themselves and should test multi-user field reconciliation.Read 15 Oct 2026 · opensourcetools.org

Local operation

The desktop app includes its database, needs no account or cloud service, stores projects locally and works with the network disconnected.Read 15 Oct 2026 · openconstructionerp.com

Notable limit

The desktop download page lists Windows 10/11 64-bit, macOS 10.15+ on Apple Silicon, and 64-bit Linux as supported systems.Read 29 Sep 2026 · openconstructionerp.com

Planning

Scheduling includes Gantt planning with CPM, Earned Value Management, S-curve and Monte Carlo simulation.Read 29 Sep 2026 · openconstructionerp.com

Platform limitation

The download page says the macOS application is not yet notarized by Apple and requires removing the quarantine attribute before first launch.Read 15 Oct 2026 · openconstructionerp.com

Praise: comprehensive features

A G2 reviewer praised the product's breadth, cost-data feature and easy initial setup.Read 15 Oct 2026 · g2.com

Praise: open and customizable

Another G2 reviewer described it as open-source, customizable software built by professionals and valued its centralized project information.Read 15 Oct 2026 · g2.com

Public API

Every UI action is exposed through a versioned REST API under /api/v1, with interactive Swagger documentation available at /api/docs.Read 15 Oct 2026 · openconstructionerp.com

Quantity takeoff

Users can scale and trace PDF drawings, measure DWG layers, and link countable BIM elements directly to BOQ positions.Read 15 Oct 2026 · openconstructionerp.com

Rating on G2

4.5 out of 5 from 2 reviewsRead 15 Oct 2026 · g2.com

Release news

Version 18.6.0 was announced on 2026-10-15 with an Owner's Project Control pack, German demo projects, a Türkiye MEP pack and payment-entry changes.Read 15 Oct 2026 · openconstructionerp.com

Scheduling and cost control

A 4D programme is generated from BOQ positions, while the 5D model tracks budget, committed, actual and forecast amounts with earned-value measures.Read 15 Oct 2026 · openconstructionerp.com

Security and data control

The maker says self-hosted project data stays on the customer's hardware and the platform does not upload files or phone home.Read 29 Sep 2026 · openconstructionerp.com

Security controls

The security policy lists JWT authentication, bcrypt passwords, CORS controls, rate limiting, RBAC, signed builds and SQLAlchemy/Pydantic protections.Read 15 Oct 2026 · github.com

Security limitation

Self-hosters are instructed to replace the development JWT secret, enforce HTTPS, disable production API documentation, restrict origins and maintain backups.Read 15 Oct 2026 · github.com

Self-hosting

The software runs on a laptop, office machine or rented server, with PostgreSQL and Docker or a packaged desktop build.Read 15 Oct 2026 · openconstructionerp.com

System requirements

Supported desktop systems are 64-bit Windows 10/11, macOS 10.15+ on Apple Silicon and 64-bit Linux; pip installation requires Python 3.12+.Read 15 Oct 2026 · openconstructionerp.com

Plans and prices

Every OpenConstructionERP plan and price →

Where Specifiction places it

• Construction Estimating Software#5 of 299.1