Stable releases, product updates and engineering posts from the team building the open-source construction ERP.
How the client will soon price the build themselves, and why the unit of construction has to change. From the taxi meter to the composite price, from 4,000-year-old work rates to the locked recipe of the estimate - the long argument for putting the price and the schedule back in the client's hands.
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Estimating, CAD/BIM take-off, 4D/5D scheduling, procurement and site billing - in
one self-hosted system under AGPL-3.0. 116 modules in v5.2.0, 55,000+
cost items across 11 regions, 57 validation rules over 16 rule sets. The architecture,
how a real project flows, what it replaces and complements, the five-year TCO, and
who already works with our open tools.
A closed ERP is somebody else's account of how your company works, and you lose it the day the subscription lapses. Over 180 modules now read one data model, from quantity surveying and CAD takeoff to estimating, 5D cost, requests for information and inspections. Nine American playbooks ship beside twelve German ones, GAEB is an exchange format in both directions, the markup stack is one an estimator can reason about, and a register that cannot fit on one screen says so. Forty one locales, with a walkthrough video.
A drawing opened in DWG Take Off came back looking nothing like the file it came from, and that is fixed. Three other things were already finished on the server with nothing in the product leading to them: deleting a draft contract, the credentials register and the pipelines page. Contract securities are held against the contract. Three statutory modules ship for e-invoicing clearance, tax withholding and payment deadlines, answering over the API with no screens yet. Around 320 interface strings in each of the 29 languages.
Four releases on from version 10, the platform carries a project from the first drawing to the final account: quantity takeoff from PDF, DWG, IFC and RVT, more than 120,000 cost items across 47 countries, resource-based estimating, programme and earned value, quality and change control, ISO 19650 approvals, commissioning and handover. 180+ modules, 144 guided scenarios, 41 languages. Open source under AGPL-3.0, self-hosted, from a 2GB server.
Since 7.0.0 the platform has grown from an open estimating tool into one system for the whole project: AI-assisted estimating, quantity takeoff from PDF, DWG, IFC and RVT, federated BIM, advanced scheduling with earned value, quality and change control, site delivery and whole-life carbon. 159 modules, 85 guided cases, 27 languages, and more than 150 community reports closed. Open source under AGPL-3.0, self-hosted, from a 2GB server.
No more Settings detour to get a converter. The first time you upload an .rvt, .ifc, .dwg or .dgn file, the matching converter is fetched and provisioned in the background, trying several install methods in turn so it works across the widest range of hosts, with downloads that resume and a binary that self-tests after install. And bill-of-quantities exports and side-by-side comparison now convert foreign-currency amounts into the project's base currency before totalling, so a mixed-currency total reconciles.
A small, targeted fix. A PDF uploaded for quantity takeoff now stays attached to the active project, so it remains in the document list after a page reload instead of vanishing. Previously the upload was saved with no project, so the project-filtered document list dropped it on refresh. The server already verified the caller's access to the project before storing the file, and it still does.
A single number hides the risk in an estimate. A new Monte-Carlo cost-risk analysis runs thousands of correlated, PERT-distributed iterations over a bill of quantities to produce a full cost distribution: P5 to P95 bands, a probability S-curve, a recommended contingency at your confidence level and a tornado of what drives the variance. An in-app How it works hub explains every module in all 27 languages, the Geo Hub gains lightweight 2D maps, cost benchmarks gain a DIN 276 element breakdown, and takeoff can count by example.
A maintenance release that smooths the rough edges of 8.7.0. The recurring "Request timed out" message no longer floods the screen on a busy or slow server, an interrupted CAD conversion stops spinning forever and reports a clear error, and the AI Estimator no longer analyses a source twice. The transmittals page reflects the real lifecycle, the guided AI form drops its raw labels, and the AI agent tools now verify project access before reading anything.
The methodology engine meets the country packs. A pack can now carry its own estimating methodology and apply it automatically, so installing one starts its demo project and any new project on the local cascade (United States, United Kingdom, India, Germany or Australia) instead of the generic method. Methodology estimates export to PDF and Excel, point cloud scans in LAS, LAZ and COPC read directly, several capabilities surface in the interface, and a broad security and data-integrity pass spans many modules.
One fixed markup chain does not fit every country or every kind of work. A new data-driven methodology engine lets a project follow a named methodology you build and edit in the app: a typed BOQ hierarchy, analytical dimensions, named funding sources and a cascade of markups that build on one another. Country and industry templates ship ready to install, the cascade editor reconciles its arithmetic against the server, and construction machinery is now costed separately from installed equipment.
Takeoff grows up. DWG and DXF takeoff is now a full vector takeoff: because a drawing is exact geometry rather than pixels, one click produces a per-layer quantity table with the right unit for each layer, plus a count-by-block rollup and a one-click Excel export. The PDF takeoff viewer gains a thumbnail sidebar, find-on-sheet search, fit and zoom controls and an orthogonal lock, PDF takeoff can detect the printed drawing scale, and structural steel can be priced by mass.
A focused fix release. PDF takeoff measurements are now scoped to the project and the exact document they were drawn on, so two files that share a name never surface each other's measurements again. The resources under a bill-of-quantities position open on the first click of the chevron, and the public hosted demo keeps its bundled cost databases read-only, with a clear note that points to self-hosting.
OpenConstructionERP lands in Africa. A South Africa construction pack arrives pre-configured for the way the country builds: SANS 1200 civil and ASAQS building measurement, CIDB contractor grading from 1 to 9, the PPPFA 80/20 and 90/10 preferential procurement scoring, the National Treasury delivery and procurement stages, all nine provinces with editable location factors, and the rand with 15 percent VAT. Johannesburg cost data downloads on demand. Alongside it, the newest feature screens are now translated in every language, a fresh install starts faster, and the BOQ templates page follows the project switcher.
A hardening release that closes a quiet data-loss pattern. Across more than two dozen modules, saving a change to one part of a record used to replace the whole stored details field, so anything the form did not resend was lost. Editing now merges into what is already there. Paying an invoice updates budget actuals correctly, cost breakdowns convert mixed currencies before totalling, and access checks were tightened so an account only reaches the projects it should.
A new project journey map lands in the top bar. A small control names the lifecycle phase the screen you are on belongs to, and opening it lays out the whole project from first lead to handover across three arcs and eleven numbered phases, with every major module placed on its phase as a link. Around it, the currency dialog now catches an exchange rate entered upside down before it skews a total, BIM models imported from a spreadsheet get the same validation report as the CAD path, and the DIN 276 checks fold dotted CAD codes to the right cost group.
A security and reliability release. A broad access-control pass scopes every list and aggregate to the projects an account can reach, so a shared deployment keeps each team inside its own projects, while administrators keep the full portfolio view. The first run is smoother too: the init-db and seed commands now build a brand-new database in full. Along the way the top bar gains a What's new panel, the validation rule packs report how much they actually check, DIN 276 validates across the full code hierarchy, and the takeoff CSV export now matches Excel.
The assistant chat now renders Markdown tables as real tables instead of raw pipe text, in both the floating and full-page chat. The quick create and guided project setup windows are fully translated across all 27 languages. And the install is lighter: regional cost catalogues download on demand and cache locally instead of shipping inside the package, while all thirty regions stay one click to import.
Company price books with their own currency, imported from the Excel and CSV files you already have, with Russian headings and European number formats read correctly. Thirty regional reference catalogues now ship inside the install and load offline in seconds. The 5D cost model gains an earned value column with percent-complete recording right in the budget line, schedules get estimated durations with an Est. badge, administrators can remove the seeded demo projects in one click, and a deep five-dimension audit hardened money parsing, budget idempotency and currency handling before the tag.
Read the release notesFinancial depth and scale. A double-entry general ledger turns project costs into a trial balance, income statement, balance sheet and cash flow. The takeoff tool can read a PDF plan with a vision model and propose what it sees. Large CAD and PDF uploads now resume if the connection drops, and limits across uploads, lists and bulk actions are much higher. You can erase your own account and data, and a new saved-views module remembers a filtered list.
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Version 7 reaches the milestone we set out to build: your processes, your resources, full 5D costing and 4D scheduling through the 86 modules you need. One installer on Windows, macOS and Linux, with CAD and BIM now on Linux too for DWG, RVT and IFC. Quantities turn into resource-based estimates on GAEB, NRM and MasterFormat, with schedules, data validation and AI that suggests while you decide. The full path from drawing to a calculated and scheduled project, in 27 languages. Open-source, self-hosted, your data is yours.
Read the release notesEverything since v7.1.0, in one place. The desktop app installs reliably and an upgrade from a broken install now repairs itself, including the Windows install that used to hang on Turkish regional settings. The AI Estimate Builder shows the real catalogue match and says "matched, no price" instead of a fake $0.00. IFC grouping, search and filter work correctly in all 26 languages, a new schedule-quality pack checks project schedules like a BOQ, and every module now explains itself with confidence badges, suggestion chips and an inline glossary.
Read the release notesMore than 80 places where related records had no link are now wired both ways, so any related record is one click away and deep links land on the exact row. The AI Estimate Builder opens with a conversation, asks short clarifying rounds, then two confirmation checkpoints and multi-pass rate mapping where every rate shows why it was chosen and flags outliers. Plus a translation sweep across all 26 app languages, cost positions that carry every resource on add, clash clusters that become one tracked item, and a real desktop first launch.
Read the release notesThe v7.0.0 desktop app could quit about two seconds after launch without ever showing a window. v7.0.1 removes the cause, an auto-update plugin registered without its configuration, adds a native error dialog so a startup failure can never be silent again, attaches only to a healthy backend of exactly the same version, and embeds the WebView2 runtime in the Windows installer. Web, PyPI and Docker installs were not affected.
Read the release notesEvery module now opens the same way: one name and icon in the top bar, an info card that names the problem it solves and explains what goes in, what comes out and where it flows next, and a collapse-to-top-bar control. A platform-wide palette fix restored dozens of translucent surfaces a Tailwind bug had silently dropped. Plus the AI Estimate Builder, a reworked collaboration hub, Validate deep links, a clickable diary calendar, and orientation copy for 110 modules in 27 languages.
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The TOP-30 competitive wave lands. Field time and attendance with a payroll
lifecycle and idempotent posting to the general ledger, a cross-module
project-controls dashboard, compliance enforced at the contract, document
and purchase-order gates, AIA G702/G703 payment
applications, a wave of opt-in AI agents, a subcontractor and client portal,
and a desktop launch that survives long database recovery.
Last stable 5.x cut. Eight user-reported bugs fixed end-to-end (PDF worker,
PDF 403, JWT session reset, CAD/BIM Data Explorer RVT, BIM
Section Box, Walk mode, /bim/federations 3D, DWG load). Each
one verified through a sequential Playwright probe before commit - 9
PASS, 0 FAIL. The Japanese locale crosses 98.5 % (1,627 keys).
Six dependabot upgrades merged. News articles get a related-articles
right-rail.
Six deep bundles and the last stable cut of the 5.x line. Geo Hub closes its
storage leaks and caps accuracy at 10 km; Brazil gets BRL,
NBR 12721 and an RPS-layout invoice PDF; /login reads cleanly in
dark mode; /reporting finally renders HTML reports in-page; Daily
Diary entries can be deleted; and 51 frontend files pass WCAG-AA on the top
contrast offender.
Three first-touch fixes on top of v5.2.7. The Geo Hub Global / Project /
Development tabs always navigate to the right scope instead of being dead
links, /markups → /takeoff deep links land on the
right measurement (flashed into view), and /resources gets
inline pencil + trash icons with a real edit modal and danger-styled delete
confirmation.
Two visible improvements on top of v5.2.6. The 13 widgets on
/projects/:id finally lay out as a responsive 1/2/3-column grid
instead of one tall stack, and the in-app update checker gains a real
Apply update button - same interpreter, captured pip log,
humanised restart hint.
A quality-of-life wave on top of v5.2.5's install-crash fix. The documented demo
password works, ~700 contrast violations cleared at the token layer,
/reports renders real HTML, the project dashboard stops fanning out, and
Japanese covers 1197 more keys.
pip install works again.
Unblocks fresh installs that crashed on the 4.5.0 wheel by pinning
fastapi >= 0.116. Plus a restored /dashboard
landing route, the deleteDiary API helper for Daily Diary, and a
widened Payment.amount type for the finance UI.
The costs.vector_adapter health probe was hardcoded to LanceDB
while production defaults to Qdrant since v3, so every cost upsert silently
no-op'd - /match-elements read "AI Semantic Search is offline" on
healthy installs. Probe now dispatches on settings.vector_backend,
and backend/.env.example got a full rewrite.
Seven small fixes on top of v5.2.0. /dashboard now renders
DashboardPage instead of redirecting, the takeoff viewer cancels in-flight
pdf.js renders on page change, the validation banner stops lying about empty
runs, the project widget grid stops 405-ing on Change Orders, six OSHA fields
exposed on Safety Incident responses, and an aria-label backfill across five
Page.tsx files.
Epic I lands native I/O for the four BOQ formats that cover roughly 70% of the
Tier-1 construction market - DACH, Spain, UK and US - plus one drag-and-drop
import surface (/regional-exchange) that ties them together.
A tight follow-up to v5.0. Full strict TypeScript over the new
notifications and file-version surface, dispatcher retry + de-dup, and the
first 751 v1 file rows backfilled on the live demo VPS.
The first stable v5 major. Wave 1 of the Deep-Coordination initiative lands three pieces of cross-module infrastructure that every workflow above them now relies on - and the platform crosses 116 modules.
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The first stable major. A pro-grade BIM Hub, real clash detection, the BOQ pro
rebuild, a 7-stage Match Elements pipeline, a starter pack of BI dashboards and
a public /api/v1/* contract you can build on - all in one
pip install.
Wave 3/4 modules land with eight new Alembic revisions
(v3088→v3095). Validation moves out of the editor and
into the import pipeline itself, GAEB X84 Nebenangebot ships as a
first-class writer, and RVT import gains a structured diagnostics report.
BOQs that nest as deep as a real project does. The hard cap rises to
MAX_NESTING_DEPTH=8, the editor switches to a recursive
parent_id walk, a resource-code dedup closes #133, and v3.6.1 fixes the one
render path that still flattened deep rows.
The release that put the platform's skeleton in place. Eighteen business modules on one loader, a deterministic FSM engine replacing ad-hoc status fields, a pure-Python ISO 16739-1 IFC parser, and the Qdrant + BGE rerank Match Elements pipeline.
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