v7.5.0 - WordPress for construction companies,
from drawing to a calculated and scheduled project.

OpenConstructionERP is already used by people in more than 100 countries. Almost everything we have released from version 3 to version 7 came from your messages: the ideas, the bug reports, the honest criticism. Thank you. Version 7.5.0 is where the picture we have been drawing since the start finally fits together. The simplest way to describe it is the one many of you have used already: this is WordPress for construction companies. You run it yourself, you shape it around your own processes and resources, and you add only the modules you need.

What is new in version 7.5.0

• Fast installation on Windows, macOS and Linux. One installer, and in a couple of minutes you are ready to work.
• Linux support for CAD and BIM, not just the platform. AutoCAD, Revit and IFC files convert on Linux the same way they do on Windows and macOS.
• Cost estimates on GAEB, NRM and MasterFormat standards, with schedules, data validation and AI that gives suggestions while you make the decisions.
• The full path from drawing to a calculated and scheduled project, in one place, without exporting between disconnected tools.
• 27 languages, so the same word means the same thing on every screen, wherever your team works.

OpenConstructionERP by the numbers

A few honest figures that say more than a feature list. Every one of these ships in the box, with nothing extra to buy and nothing to switch on.

Quantities from CAD and BIM, turned into a real estimate

A drawing is only the beginning of an estimate, and getting from one to the other is usually where hours disappear. In v7.5.0 the converters for AutoCAD, Revit and IFC now run on Linux as well as Windows and macOS, so the whole CAD and BIM pipeline is available wherever you host the platform. Quantities pulled from those models flow straight into resource-based cost positions, where each line carries its labour, material and equipment, not just a single rate. The takeoff and the estimate are the same data, so a change in the model is a change you can cost.

Standards-based estimating, with validation built in

Estimating in v7.5.0 speaks the standards your work is measured against: GAEB for the DACH region, NRM for UK measurement, and MasterFormat for US classification. The validation engine reaches well past those three, with rule packs for more than a dozen national cost and tender standards, so a German DIN 276 cost plan, a Chinese GB/T 50500 bill and a Brazilian SINAPI estimate are each checked against the structure their own market expects. Quantity takeoff reads from the core formats and lines up with the structure each standard expects. Data validation is not an afterthought you run at the end, it is part of the workflow: an import or an estimate is checked against a configurable rule set, and the result is a traffic-light report you can act on. The AI sits alongside this, not on top of it. It suggests a classification, a matching rate, a likely gap in scope, and you confirm or change it. Suggestions come with confidence, and nothing is applied without your decision.

The modules you need, and only those

The WordPress comparison is not just a slogan. The platform is a core you can extend, and the 86 modules cover the work a construction company actually does: projects, bill of quantities, takeoff, cost databases, CAD and BIM, validation, tendering, scheduling, reporting and more. You turn on what fits your processes and leave the rest aside. Nothing is locked, nothing is hidden behind a vendor wall, and your data stays in open, exportable formats. You shape the system around how your company works, instead of reshaping your company around the software.

From drawing to a calculated and scheduled project

The point of version 7 is that the path is continuous. A drawing comes in, it converts to clean quantities, those quantities become a resource-based estimate on the standard you work to, validation flags what needs attention, the estimate rolls up into a schedule, and the whole thing stays connected as the project moves. Costing in 5D and scheduling in 4D are not two separate worlds you reconcile by hand, they are the same project seen from two angles. That is what we mean by the full path: from the first line on a drawing to a project that is both calculated and scheduled, without losing the data in between.

Open-source, self-hosted, your data is yours

The project is open-source. You host it yourself, on your own machine or your own server, and your data belongs to you. There is no account you depend on and no format you cannot read without us. That is the part we care about most: democratizing access to data is the beginning of a more open construction industry, and an open, self-hosted tool is how a small team gets the same footing as a large one.

Thank you, and keep writing

Thank you to everyone who sent ideas and honest criticism. Every point has been read and worked through, and a large share of what shipped from version 3 to version 7 started as one of your messages. Please keep them coming: in the comments, in Issues, by email, in the Telegram chat, or by direct message. We keep working to democratize access to data and processes in construction, and that work is a lot better with you in it.

Install or upgrade

pip install --upgrade openconstructionerp

The desktop installers for Windows, macOS and Linux carry the fast one-installer setup, and the Linux build now includes the CAD and BIM converters for AutoCAD, Revit and IFC. You can grab the latest installers from openconstructionerp.com/download. If you run an external PostgreSQL through DATABASE_URL, nothing about that connection changes. Questions or trouble upgrading, write to info@datadrivenconstruction.io.