estimaon — OSArch https://community.osarch.org/ Fri, 12 Jun 2026 03:54:15 +0000 en estimaon — OSArch OpenConstructionERP | QTO, BOQ and AI estimating with IFC and Revit https://community.osarch.org/discussion/3437/openconstructionerp-qto-boq-and-ai-estimating-with-ifc-and-revit Mon, 27 Apr 2026 05:37:06 +0000 General ArtemBoiko 3437@/discussions Open-source ERP for construction estimation and project management
Professional BOQ, 4D/5D planning, AI-powered estimation, CAD/BIM takeoff — all in one platform.

GitHub:
https://github.com/datadrivenconstruction/OpenConstructionERP

I've spent about ten years working on construction estimation and ERP, and the one thing that kept bothering me is how few open alternatives there are on the priced BOQ and 5D side. The software is proprietary, and the cost catalogues behind it are too.

So I've been building OpenConstructionERP. AGPL-3.0, runs locally, reads IFC directly, and ships with an open cost catalogue (CWICR, about 55k items in 9 languages) as actual open data.

OpenConstructionERP is an open-source construction ERP built for local-first cost estimating, quantity takeoff, and CAD/BIM data workflows. It runs on your own machine, does not require a cloud account or subscription, and keeps project data under your control.

In this full walkthrough ⬇️ I show how the system connects CAD/BIM models, drawings, PDF takeoff, Bill of Quantities, priced estimates, data exploration, and AI-assisted estimating on top of one shared object model.

image

The project is released under AGPL-3.0 and includes a 55,000-item CWICR cost catalogue, support for 11 regional price databases, and native import workflows for RVT, IFC, DWG, DGN, and PDF through the cad2data pipeline.

I'd really appreciate any criticism, feedback or pushback from the community. That's the main reason I'm posting
here.

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