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v3.0.4 · shipped 2026-05-13

Run the whole construction project

Open-source ERP for construction teams — estimates, schedules, tenders, contracts, site tasks and reporting in one install. Cost and time figures stay in sync with the drawings and the BOQ behind them.

COPIED
$ pip install openconstructionerp
AGPL-3.0 Self-hosted 2 GB RAM
Projectsportfolio Portfolio
& teams
BOQassemblies Live
totals
Schedules4D gantt Gantt
& BOQ
Takeoffauto AI suggests
you confirm
CAD / BIMDWG · IFC DWG · IFC
RVT · DGN
Costs55k items 55k items
vector search
Validationcompliance Traffic-light
report
Tendersbid packs Compare
bids
Contractsawards One
audit trail
Inventorymaterials Stock
& orders
SafetyHSE Incidents
& toolbox
Documentsrevisions Revisions
& diffs
Site tasksdaily Snags
& photos
Equipmentfleet Fleet
& plant
QualityQA · QC Defects
& audits
Cashflowinvoices Invoicing
& budgets
Reportingexports PDF · GAEB
JSON · API
UsersRBAC · SSO RBAC
& SSO
Live preview · no sign-up, no demo call

Skip the sales call. See it work.

No six-figure licence to read back your own data.

BOQ editor — build bills of quantities, priced rows
Cost database — 55,000 priced positions, instant semantic search
BIM → BOQ — link 3D model quantities directly to estimate positions
AutoCAD → BOQ — DWG layers pushed into positions
PDF takeoff — click-to-measure on PDF drawings, straight to BOQ
Bulk-link CAD groups — select many elements, push quantities into BOQ at once
AI Estimate — snap a photo or upload a doc, get a first-pass priced estimate

01 BOQ editor Build bills of quantities, priced rows

engineers, contractors and consultancies already running it
A snapshot of the construction, engineering and infrastructure teams that registered in the first weeks of OpenConstructionERP — across Europe, North America, MENA, APAC and Australasia.
Data flow · concept → priced BOQ → tender pack

How a project file becomes a fully priced tender pack.

One pipeline, three stages, six file types in. Photos and PDFs on one side, a tender‑ready BOQ on the other — every element classified, measured, priced and traceable.

▸ Worked example · one wall, end-to-end

What we extract from a single CAD element before it lands as a BOQ row.

▸ Element

Wall_Lvl01_E034

stable across model revisions

▸ Class

DIN 276 · KG 330

Außenwände · external wall

▸ Geometry

12.5 × 3.0 × 0.24 m

9.0 m³ · 37.5 m²

▸ Properties

Concrete C30/37

F90 fire rating

▸ Cost

CWICR · DACH

€ 245 / m³ matched

▸ BOQ line

9.0 m³ × € 245

€ 2,205 on the tender

~55KCWICR priced positions
5rule packs · DIN/NRM/MFM/GAEB/DPGF
6 → 7file types in · exports out (incl. 4D · 5D)
100%trace · element ↔ rule ↔ price
10 · open source

The repo, in the open.

AGPL-3.0 on GitHub. Issues and the roadmap live there; if you want to see what's coming next or what broke last week, it's all on the commit log.

GitHub · datadrivenconstruction

Star the repo, shape the roadmap.

Every issue, PR and roadmap item is public on GitHub. Open an issue, comment on what matters, or send a PR — contributions of any size are welcome.

AGPL-3.0open-source
Open the repo

People who've already starred the repo.

  • v3.0.4 Polish pass + community contributor flow — Support-us modal, Mongolian locale, marketing auto-version sync, 12 dependency bumps 2026-05-13
  • v3.0.3 Deep correctness pass — FSM engine, ISO 16739-1:2024 IFC parser, Ed25519 manifest signing, 19-file WideModal sweep 2026-05-13
  • v3.0.1 18-Modules Wave — 17 new business modules (88 total), India CRS auto-detect, Qdrant without Docker, JWT fail-fast 2026-05-13
  • v3.0.0 v3 milestone — rollup of v2.x to PyPI + GitHub + VPS 2026-05-12
  • v2.9.39 12 African catalogues (registry 30 → 42) + ranker monkeypatch fixes 2026-05-11
  • v2.9.38 11 classification standards data-driven from catalogues + 80-entry macro bridge + per-encoder thresholds 2026-05-11
  • v2.9.36 /match-elements 10-pass polish — a11y, perf, toasts, UX 2026-05-10
02 · watch it run

See it work. In one take.

A short walkthrough of the whole pipeline — drawing in, tender out. No voiceover, no narration, just the product doing what it does.

03 · by the numbers

What you get when you install it.

Numbers from the current release. Some of these will be out of date by the time you read this — the repo moves fast.

cost database
0+

ready-to-use cost items across trades and assemblies.

updated monthly
CAD formats
0

native CAD ingest — DWG, RVT, IFC and DGN into one canonical format.

DWG · RVT · IFC · DGN
modules
0

plug-in modules covering the full site workflow — projects, BOQ, takeoff, tenders and more.

add & remove like packages
licensing
0%

open-source core under AGPL-3.0. No vendor lock-in. Your data stays yours.

AGPL-3.0 + Commercial
07 · how it stacks up

How it compares to what you're using now.

Honest table. Commercial suites are genuinely better at a few things — mostly integrations paid for over a decade. Everywhere else, the gap is smaller than sales teams claim.

Capability OpenConstructionERP Enterprise estimating suite Heavy civil bid tool Legacy construction ERP
Open-source core (AGPL-3.0)
Self-host on your infra ~ ~
AI takeoff from PDF / photo ~
Multi-CAD ingest (DWG / RVT / IFC / DGN)
55,000+ cost items out of the box ~ ~
Real-time multiplayer (CRDT)
20 languages in core i18n ~ ~
Modular plugin architecture
Typical cost / seat / yr € 0 · self-host € 10–15k € 6–12k € 3–8k
Implementation / onboarding € 0 · docs + community € 20–80k € 15–40k € 30–150k
Contract term None · cancel anytime 1–3 yr lock-in 1–3 yr lock-in 3–5 yr lock-in
fully supported  ·  ~ partial or via plugin  ·  not supported
modular by design

Add a module. Remove one.
No rebuild.

Every feature is a self-contained package. Drop it in, pull it out — the running install picks it up in seconds, zero downtime.

08 · developer experience

It's a module system, not a monolith.

Every feature is a Python package with a manifest. You can add one to a running install without rebuilding anything. The APIs are typed; the OpenAPI spec is generated, not hand-maintained.

  • Module SDK — scaffold one with make module-new
  • Typed REST API, auto-generated OpenAPI spec
  • Hooks & event bus — extend without forking
from openestimate import Client, Project

client = Client(url="https://api.yourco.com")

# Create a project and import CAD
project = client.projects.create(
    name="Logistics Hub — Jebel Ali",
    currency="EUR",
)

cad = project.cad.upload("./plans.ifc")
takeoff = cad.takeoff(ruleset="boq_quality")

# AI matches costs, you confirm
for pos in takeoff.positions:
    if pos.confidence > 0.85:
        pos.accept()

print(project.totals.grand)
# → Decimal('4_283_921.50')
# Create project
$ curl -X POST https://api.yourco.com/v1/projects \
    -H "Authorization: Bearer $TOKEN" \
    -H "Content-Type: application/json" \
    -d '{"name": "Logistics Hub", "currency": "EUR"}'

# → HTTP 201 Created
#   Location: /v1/projects/5fa4-...

# Upload CAD and run takeoff
$ curl -X POST .../projects/5fa4/cad \
    -F "file=@plans.ifc" \
    -F "ruleset=boq_quality"

# → { "positions": 248, "confidence_avg": 0.91 }
# modules/my_module/manifest.py
from openestimate.sdk import ModuleManifest

manifest = ModuleManifest(
    name="oe_regional_prices",
    version="1.0.0",
    display_name="Regional Prices",
    depends=["oe_costs"],
    hooks={
        "cost.match.pre": "adjust_for_region",
    },
)

# Drop this folder in modules/, restart.
# Marketplace auto-discovers on next boot.

The stack.

Deliberately boring choices. All open-source.

Backend
Python 3.12 FastAPI Uvicorn Pydantic SQLAlchemy Alembic PostgreSQL pandas pyarrow
Frontend
React TypeScript Vite TanStack Query AG Grid Three.js PDF.js MapLibre i18next
Ingest
ezdxf trimesh PyMuPDF openpyxl defusedxml cad2data
Formats
IFC RVT DWG DGN PDF Excel GAEB XML JSON Parquet
05 · product tour

Drawing to tender, end to end.

Seven steps from first-run to finished tender. Follow them in order or jump ahead — each one plays a short capture from the running app.

01 · onboarding
Role-based onboarding — pick your seat type, pick language and region, starter DB loads
Create a new project — name, location, team, documents
Start the estimate — open a BOQ, add sections fast with the keyboard-first editor
Add positions — search 55,000+ priced rows from the cost database
Resources & assemblies — pivot materials, labour and equipment per position
Link the BIM model — bulk-link a group of elements into BOQ positions
Link CAD — DWG layer panel, pick entities, push lengths and areas into positions
Validate — project dashboard with validation status across BOQ sections
Tasks & follow-ups — tasks linked to BIM elements and BOQ positions
Complete estimate — totals rolled up, ready to export as GAEB, Excel, PDF or JSON
01

Onboarding

First run. Pick language, region and currency — the app comes with a starter cost database (55,000+ priced positions) already loaded. Zero setup, no seed-data dance.

  • Language
  • Region
  • Currency
  • Starter DB
10 · open research lineage

Built on DataDrivenConstruction.

OpenConstructionERP grows out of a decade of open construction‑tech research. The cost database, CAD parsers and ML models it depends on were built and refined inside the same open lab, and ship as part of the same ecosystem.

A note from the founder

Over the past ten years, I have been deeply involved in resource management for construction projects. This journey inevitably led me to study the history of the technologies that have shaped the industry—from the earliest attempts at design automation to modern ERP platforms (see the series of articles “The Lobbyists’ Wars and the Development of BIM” and “The History of the BIM Map”). Without understanding where we came from, it is impossible to see where we are going.

Over the years, dozens of articles have come off my desk, read by millions of professionals around the world. At the same time, I’ve consulted with major construction and consulting firms, developers, and software vendors themselves on data management in projects—helping them navigate processes where data is not a byproduct but the foundation for decision-making. This work gave me a rare opportunity to see the industry from both sides: through the eyes of those who create the tools and through the eyes of those who use them in real projects every day. Many of these observations and reflections are collected in my book Data-Driven Construction, which is now available in 16 languages—datadrivenconstruction.io/books.

Two other things have kept me busy: helping non-developers get into proprietary formats that were never meant to be opened, and finding a cleaner way to describe construction work through a resource model. These efforts have resulted in free tools—DDC CAD/BIM data converters (Revit, IFC, DWG, DGN → structured data), available on GitHub, and the multilingual CWICR database of construction works and resources—over 55,000 items in 11 languages, published as OpenConstructionEstimate-DDC-CWICR. All of this was a necessary step toward an idea I’ve been pursuing for the past decade—an open-source modular ERP for the construction industry.

The recent generation of AI tooling finally made it feasible to consolidate that work — methodology, data models, and prior implementations — into a single platform. It’s now public and open source.

Progress is born from dialogue—from the clash of perspectives and openness to new approaches. I would be grateful if you would be willing to participate in this conversation on the inevitable Uberization of the construction industry and the transparency of cost and time estimation processes for construction projects.

— Artem Boiko

founder, datadrivenconstruction.io

clients & users of DDC solutions
A snapshot of the construction, engineering and infrastructure companies that have built with DataDrivenConstruction's open tools, datasets and AI workflows over the past decade.

Most civil design files are basically data prisons. Loads of useful info—alignments, surfaces, quantities—just sitting there, locked inside formats that were never meant to play nice with anything outside their original software. I’ve wasted way too much time trying to answer simple questions like ‘how many manholes are in this job?’ or ‘what’s the volume by phase?’—only to find out the data’s buried five layers deep in a DWG or DGN. Data Driven Construction fixes that. Their converters crack open these closed formats and give you structured data you can actually use—in Power BI, in Excel, or even in an LLM prompt if you’re doing something fancy. It’s not flashy, but it’s insanely useful. If you’re trying to move beyond screenshots and PDFs and actually use your design data, this is the kind of tool that makes it possible. It’s the difference between guessing and knowing. And honestly, it’s saved me more than a few Saturday mornings.

Chris Andrew
Chris Andrew
AECOM · Digital Transformation Technical Lead & Associate Director

Be part of the movement with DataDrivenConstruction! Let’s make true freedom in data formats a reality and catalyze a new era of productivity and innovation in construction. The real and necessary journey from closed to “open” formats has not even started: True freedom in data formats—free from proprietary ties and accessible to all—is what we need to unlock innovation and collaboration across the construction industry, particularly benefiting the 99% of construction, i.e. SMEs and unchaining the sector for accelerated growth.

Michael Bühler
Prof. Dr.-Ing. Michael Bühler
Co-Owner, GemeinWerk Ventures
11 · pricing

Simple, transparent pricing.

Two paths. Run it yourself for free under AGPL-3.0, or talk to us when you need hosted support, a commercial license for the converters, or anything else that shouldn’t live in the open-source license.

Self-hosted
Free · AGPL-3.0

The full open-source platform. Run it on your infra, no strings attached.

  • All 55,000+ cost items
  • Multi-CAD ingest (DWG / RVT / IFC / DGN)
  • BOQ editor + validation pipeline
  • All 88 modules out of the box
  • Community support on GitHub
  • AGPL-3.0 license
Install free
You ship — you keep

Custom-built. Self-hosted forever.

Doesn't fit a tier? We design a stack tailored to your operations and hand it over with full source. Your hardware. Your data. Your rules.

FIVE LAYERS / ALL YOURS
REV. 2026.04 — DRAFT
YOU OWN ALL OF THIS
SCALE 1:1
1read top ↓ bottom
2every layer = on your hardware
3data never leaves the dashed boundary
AGPL-3.0
your data, your laws
Your boundary — never leaves your control
L5 · TEAM
Your team
engineers, not just users · trained
5 / 5
yours
L4 · MODULES
Your modules custom
BOQ · BIM · Tasks · custom reports
built
yours
L3 · CORE
ERP core
GitHub · AGPL-3.0 · audit any line
v1.8
yours
L2 · DATABASE
PostgreSQL
pg_dump → your S3 · daily · your keys
16+
yours
L1 · HARDWARE
Your hardware
Hetzner · AWS · on-prem · air-gapped
online
yours
no vendor lock-in · no SaaS gateway
works under the world's data laws
GDPREU · UK CCPA / CPRAUS · CA LGPDBrazil PIPEDACanada PDPASingapore · Thailand APPIJapan POPIASouth Africa NIS2EU
Build 01

Custom build

FROM 4 WEEKS

Discovery → workshop → modules picked → built → deployed on your hardware. Source delivered.

  • 4–12 weeks total
  • AGPL or commercial license
  • 30 days post-launch support
Train 02

Workshops

1–3 DAYS · ON-SITE OR REMOTE

Hands-on sessions: estimating, BIM-to-BOQ, AI takeoff, GAEB pipelines. Recorded for your team library.

  • Up to 12 participants
  • Tailored agenda + exercises
  • Slides + recordings yours
Advise 03

Consulting

BY THE DAY · OR RETAINER

Standards mapping, cost-DB strategy, pipeline architecture, code review.

  • Async review optional
  • Outcome doc + recommendations
  • Roll over into a build anytime

Public workshops shown below. Many major enterprise engagements remain under NDA — represented anonymously by the lock cards in each row.

Drees & Sommer
Drees & Sommer
Lindner Group
Lindner Group
OTWB
OTWB
ShapeMaker
ShapeMaker
Under NDA
Bauindustrie Bayern & TUM
Bauindustrie Bayern & TUM
BIM Cluster BW
BIM Cluster BW
BIM DAY GENF
BIM DAY GENF
Herbert Gruppe
Herbert Gruppe
Under NDA

Awesome workshop, Artem! Preparations are in full swing! I’m already looking forward to the hackathon in the new year! 💪🏻

Andreas Tomaschewski
Andreas Tomaschewski
Drees & Sommer · Head of Digital Transformation

What happens when you not only organize construction processes, but also analyse them intelligently? This was the topic of our workshop with Artem Boiko on “Data-Driven Construction”. The focus was on the question of how we can make better use of existing data – to make construction projects more efficient, more transparent and less error-prone. Using specific application examples, Artem showed how structured construction data can help to maintain an overview, identify supplements at an early stage and improve communication between planning and execution. Particularly exciting: how digital tools and models can already be used today to automate processes. Data-driven construction is no longer a topic for the future – we are right in the middle of it. The workshop showed how great the potential is if we work together and really make data work for us.

Stefan Traxinger
Stefan Traxinger
Lindner Group · Head of Department, BIM Professional

Artem Boiko delivered an outstanding presentation to the entire Shapemaker team, providing deep insights into data migration from engineering software and related topics. His expertise and clear communication made complex concepts easy to grasp, equipping our team with practical knowledge we can apply immediately. Highly recommend his services for anyone seeking clarity and actionable strategies in this space!

Evan Ramenskiy
Evan Ramenskiy
Shapemaker · CRO & Co-founder

Tell us what you’re after. Every message gets a real reply.

I work on this project solo, so I prioritize teams that are ready to allocate real resources to a pilot — budget, timeline, a sponsor. Send the brief and I’ll get back to you within a few days.

What can we help with?*
Reply within 1 business day · info@datadrivenconstruction.io
12 · questions

Frequently asked.

Is the core really free and open-source?
Yes. The core is AGPL-3.0 on GitHub. You can self-host forever, audit every line, fork it, or run it in production. We also offer a commercial license for enterprises that can’t use AGPL.
What hardware do I need to run it?
The core runs on a 2 GB VPS. One PostgreSQL instance is all you need for a small team. AI features (takeoff, vector search) are optional — features degrade gracefully when AI services aren’t available.
How do I import from my existing system?
Native GAEB XML (X83 / X84 / X89), Excel and CSV import are built in. Connectors for proprietary systems ship as modules — the marketplace already has a handful, including workflow integration via n8n. Custom migrations are available via Enterprise support.
Do I need AI services to use the product?
No. The BOQ editor, validation pipeline, CAD ingest and cost database all work without AI. AI takeoff and semantic search are optional enhancements — you can bring your own model or use the hosted CV/LLM services via Pro.
Who’s behind this?
Built by Artem Boiko (solo founder of DataDrivenConstruction) with help from open-source contributors. Same person is the author of CWICR (the 55,000-item cost database shipped here) and cad2data, with 10+ years of construction-tech engineering behind both. We ship our own tools on it.
Can I contribute a module?
Absolutely. The SDK ships with a cookiecutter template — scaffold a module in one command, drop it in the marketplace when it’s ready. Good candidates: regional cost databases, ERP connectors, custom validation rule sets.
Where is my data stored? Does anything leave my server?
On your infrastructure. Projects, drawings and cost data live in your PostgreSQL and your object storage — nothing is phoned home, no telemetry by default. If you enable hosted AI services, only the payload you send is processed; it’s opt-in per workspace and you can point the client at self-hosted models instead.
What CAD and BIM formats are supported?
DWG, DGN, RVT and IFC ingest through the cad2data pipeline into a canonical format — one schema to query, classify and cost against. PDF drawings go through the takeoff pipeline (vector extraction + OCR). New formats land as modules, not core rewrites.
How does the commercial license work?
AGPL-3.0 is fine for most internal and service use. If you embed the product in a closed SaaS, ship it inside a proprietary application, or need an explicit waiver for procurement, talk to us — commercial terms cover that, plus priority support and enterprise SLA. No per-seat metering, no forced cloud.
Can I migrate away later?
Yes, and we mean it. Everything you put in comes back out — GAEB XML, Excel, CSV, JSON, Parquet, or a direct PostgreSQL dump. The schema is documented, the source is open; no proprietary file formats, no escrow games, no hostage data.
How often do you ship updates?
Minor releases roughly every 2–3 weeks, patch releases as needed. Changelog lives on GitHub, every tagged version has a Docker image, and migrations are reversible. You decide when to upgrade — self-hosted means nobody forces a deploy window on you.
Which languages and regions are supported?
20 languages ship in the core i18n. Cost database labels, validation rule sets and classification trees are per-region modules — pick the ones you need, add your own. No hard-coded currency, no hard-coded date format.
Partner Program · Founding cohort

Open core. Paid on top.

OpenConstructionERP is AGPL-3.0 and free — clone, deploy, run. The commercial layer above is where partners earn: implementation, training, support, and regional / commercial licences.

55k+ cost items · 88 modules · Open-source ERP for construction

Stop fighting your tools.
Start estimating.

Install in one command. Run on your laptop, VPS, or the cloud of your choice. Self-host forever, or let us do it.

Also works with: Helm Kubernetes systemd Procfile one-click VPS
No credit card required Self-host on your infra AGPL-3.0 forever