Building Cost by Floor
Roof
€85K
€142K
€168K
€195K
€210K
Block A
Roof
€72K
€128K
€155K
€180K
Block B
Roof
€68K
€110K
€135K
€148K
€162K
€190K
Block C
€2.85M
Total Budget
94.2%
Accuracy
2,847
Positions
Cost Breakdown by Trade
Structural
€998K
MEP
€712K
Finishes
€570K
Sitework
€342K
Electrical
€248K
Plumbing
€205K
Ext. Works
€172K
Key Materials
Concrete
361 m³
Rebar
29 t
Masonry
1,510 m²
Insulation
1,400 m²
Formwork
2,220 m²
Validation Status
Structure
100%
Rates
97%
Quantities
95%
Budget Trend (12 months)
Jan Dec
EARLY ACCESSOpen Source · Self-Hosted · Your Data Stays Yours

Construction Estimation,Reimagined

Construction estimation, scheduling, carbon tracking, and tendering — 10x faster than Excel. 55,000+ cost items, 11 regions, AI-powered. Free, self-hosted, open source.

Try Live Demo View on GitHub
AGPL-3.0 Any International Standard Self-Host or Cloud
4 hours → 20 minutes
$0 vs $25,000+/yr
94% accuracy
Cost Accuracy
94.2%
Budget Trend
-12.3%
AI-Assisted
app.openconstructionerp.com
Estimation
Dashboard
Projects
BOQ Editor
Takeoff
PDF Takeoff
AI Estimate
Databases
Costs
Assemblies
Planning
Schedule
5D Cost Model
Export
Validate
+ Add Position
Pos.DescriptionUnitQtyRateTotalStatus
01.01.010Reinforced concrete wall C30/37, 24cmm³156.00€285.00€44,460Validated
01.01.020Formwork, smooth finish, wallsm²1,248€42.50€53,040Validated
01.01.030Reinforcement steel BSt 500Skg18,720€2.15€40,248AI-suggested
01.02.010Brickwork 24cm, KS planstonesm²890€68.00€60,520Validated
01.02.020Interior plaster, machine-appliedm²2,340€18.50€43,290Pending
Section Total€241,558
Scroll to explore
55,000+ Cost Items 20 Languages Global Standards Compliant AI-Powered Takeoff Real-Time Collaboration DWG · RVT · IFC · PDF Self-Hosted · No Lock-In Module Marketplace 55,000+ Cost Items 20 Languages Global Standards Compliant AI-Powered Takeoff Real-Time Collaboration DWG · RVT · IFC · PDF Self-Hosted · No Lock-In Module Marketplace

Built-in construction databases

0+ cost items 0 regions 0 languages
46.00 mSITE A-01
The Problem

Spreadsheets weren't built
for construction estimation

Enterprise tools cost a fortune. Spreadsheets are full of errors. There has to be a better way.

0%
of projects experience cost overruns
0h
per week wasted on non-productive tasks
$0K+
per year for enterprise license fees
0%
of spreadsheets contain critical errors
OpenConstructionERP saves teams an average of 73% estimation time
Platform Showcase

See it in action →

€2.85M Budget 94.2% Accuracy 6/6 Validated Cost trend

Project Dashboard

Real-time KPIs, cost distribution charts, and budget tracking across all your projects.

ChartsKPIsTrends
POS DESCRIPTION QTY TOTAL 01.01Concrete C30/37156 m³€44,460 01.02Formwork walls1,248 m²€53,040 01.03Reinforcement BSt50018,720 kg€40,248 Total€137,748

BOQ Editor

Block-based hierarchical editor with real-time totals, assemblies, and multi-format export support.

AG GridAssembliesMulti-format
Wall 96% Room 94% Door 91%

AI-Assisted Takeoff

Upload PDFs or photos. Computer vision detects walls, doors, windows with confidence scores.

YOLOv11PaddleOCRPDF
Structure 0% Rates 0% Quantities 0% Custom 0%

Validation Dashboard

Real-time compliance checking against any international standard with custom rule sets.

Traffic LightRules EngineReports
€2.85M Baseline Jan Dec

Cost Modeling

Parametric models, what-if scenarios, regional adjustment factors, and benchmark comparison.

ScenariosBenchmarksSensitivity
PDF XML XLSX

Reports & Export

Generate professional PDF reports, XML, Excel, and CSV exports with full cost breakdowns.

PDFXMLExcelCSV
How It Works

From plans to estimates
in three steps

Upload plans, get AI-assisted quantities, generate estimates, track carbon, schedule construction, and manage tenders — all in one platform.

1

Upload Plans

Drag & drop PDF, DWG, RVT, IFC, or DGN files. Our converter handles all major CAD formats.

// Supported formats
import { .dwg, .rvt, .ifc, .pdf }
// Auto-detected & converted
2

AI-Assisted Takeoff

Computer vision detects elements, OCR reads dimensions, AI suggests quantities with confidence scores.

detected: 47 elements
confidence: 94.2% avg
status: ready for review
3

Generate Estimate

Match to 55,000+ cost items, validate against any standard, and export in multiple formats.

total: €2,847,320
validation: passed
export: PDF, XML, XLSX
Features

Everything you need to
estimate with confidence

A complete platform for modern construction cost estimation.

Block-Based BOQ Editor

Hierarchical bill of quantities with assemblies, keyboard navigation, real-time totals, and inline editing. AG Grid-powered for spreadsheet-grade performance.

AssembliesInline EditKeyboard ShortcutsReal-time TotalsMulti-format Export

AI-Powered Takeoff NEW

YOLOv11 detects elements, PaddleOCR reads dimensions. Every suggestion includes a confidence score.

PaddleOCR 3.0YOLOv11Confidence
Wall 94%
Door 91%
Window 88%

55,000+ Cost Items

CWICR database covers all trades in 9 languages. Semantic vector search finds the right item instantly.

CWICR9 LanguagesVector Search

Multi-CAD Import

DWG, DGN, RVT, IFC converted to canonical format via ODA SDK. Auto-quantity extraction from geometry.

ODA SDKRust Parser3D Viewer

Validation Pipeline

Configurable rule engine supporting any international standard. Automatic compliance checking for every position.

Any StandardRule EngineComplianceCustom Rules
Structure
Rates
Quantities
Custom

Real-Time Collaboration

Figma-style multiplayer editing via Yjs CRDT. Live cursors, comments, version history.

Yjs CRDTLive CursorsVersion History

Carbon & Sustainability

Track embodied carbon with 157+ EPD materials. GWP calculations, LEED/DGNB compliance, environmental ratings per position.

EPD DatabaseCO₂ TrackingLEED

4D Schedule & Gantt

Link BOQ positions to construction timeline. Critical path analysis, milestone tracking, schedule risk assessment, resource allocation.

Gantt ChartsCritical PathMilestones

Tendering & Bid Management

Create bid packages, distribute to subcontractors, collect and compare bids. Price spread analysis and award recommendations.

Bid PackagesComparisonAwards

Module Marketplace

Extend with plugins: cost databases, regional catalogs, integrations, analytics modules. Install from marketplace or build your own.

PluginsCatalogsIntegrations

5D Cost Modeling & Risk Analysis

S-curve cash flow projections, earned value management (EVM), cost benchmarking by project type, sensitivity analysis with tornado charts, and what-if scenario modeling for material substitution and regional adjustments.

S-CurvesEVMBenchmarksSensitivityWhat-If
Analytics

Professional dashboards,
real-time insights

Track costs, validate compliance, and make data-driven decisions with built-in analytics.

app.openconstructionerp.com/analytics
Overview
Analytics
Reports
Validation
Project Overview
Live · 14:32:08
Total Budget
€2.85M
▲ 3.2% vs. initial
Accuracy
94.2%
▲ 12% vs. manual
Time Saved
73%
▲ 62h per project
Compliance
6/6
All passed
Cost Distribution
€2.85M Total Budget
Structural35%
MEP25%
Finishes20%
Sitework12%
General8%
Cost per Trade
€998K
Struct.
€712K
MEP
€570K
Finish
€342K
Site
€228K
Gen.
€185K
Ext.
€142K
Prelim
Budget Timeline
3M 2M 1M Jan Mar Jun Sep Dec €2.85M Actual Baseline
Ecosystem

A project by DataDrivenConstruction

Democratizing construction costs. Open data, open tools, open source. Our ecosystem makes construction technology accessible to everyone.

Trusted by industry leaders
SiemensAECOMDrees & SommerVINCIArteliaLindnerMerksbechtleRBS waveSholze Thost SiemensAECOMDrees & SommerVINCIArteliaLindnerMerksbechtleRBS waveSholze Thost
TMM GroupVRAMEShapemakerAxia EnergiaHofschröerRenaissance ConstructionSintagmaDar Al RiyadhPBSZPP TMM GroupVRAMEShapemakerAxia EnergiaHofschröerRenaissance ConstructionSintagmaDar Al RiyadhPBSZPP
DDC Skills for AI Agents
The Master Controller

The unified skill library that teaches AI agents to automate all core business processes in construction companies. From data extraction to cost estimation — one repository to rule them all.

Data WorkflowsCost AutomationCAD-BIM IntegrationAI-Ready Skills
Main Repo
The Financial Core

Standardize your resources, time and cost estimation with a ready-to-use framework for AI Agents. Includes full logic to automate calculations instantly.

CAD2Data Pipeline
The Data Refinery

Don't just view models — extract value. A full pipeline to convert locked CAD/BIM assets into clean analysis-ready tables.

Instant Cost Estimation

Turn any project description into a professional cost breakdown — labor, materials, equipment & scheduling. Powered by 55,000+ verified work items.

Try Free Estimate
Any Input
Text, Excel, PDF, IFC, CAD
Full Reports
KPIs, Gantt, Monte Carlo
Global Pricing
Location-adjusted factors
AI-Powered
AACE Class 4 accuracy

Democratizing Construction Costs

Construction pricing data has been locked behind expensive subscriptions for decades. We believe access to fair, transparent cost data is a foundation for better buildings — and better decisions.

“

OpenConstructionERP (DataDrivenConstruction) converters crack open closed formats and give you structured data you can actually use — in Power BI, in Excel, or even in an LLM prompt. It's not flashy, but it's insanely useful.

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.

Prof. Dr.-Ing. Michael Buehler
Prof. Dr.-Ing. Michael Bühler
Co-Owner, GemeinWerk Ventures
Compare

Why teams are switching

CapabilitySpreadsheetsEnterprise ToolsOpenConstructionERP
PriceFree$3K–$25K+/yrFree
BOQ ManagementManual✓✓
AI-Powered Takeoff✕Limited✓
Multi-CAD Support✕✓✓
55K+ Cost Database✕Extra $✓
Validation Pipeline✕Limited✓
Self-Hosted✕✕✓
Open Source✕✕✓
20 Languages✕2–5✓
Q1 Q2 Q3
Global Coverage

One platform, every market

21 languages, 11 regional cost databases, 900,000+ resource entries. Built for construction teams everywhere.

0
Languages
0
Work Items
0
Regional Databases
900K+
Resource Entries

Supported Languages

English
EN
Deutsch
DE
Français
FR
Español
ES
Português
PT
Italiano
IT
Nederlands
NL
Русский
RU
简体中文
ZH
日本語
JA
한국어
KO
العربية
AR
हिन्दी
HI
Türkçe
TR
Polski
PL
Čeština
CS
Svenska
SV
Norsk
NO
Dansk
DA
Suomi
FI
Български
BG
6.00m6.00m
100%
Inside the Database

Every work item is
a complete recipe

Behind every cost position: materials, labor rates, equipment hours, and energy — all priced for your region.

Steel Pipe Welding Joint
per 1 joint
€0
Welding electrodes UONI 13/55
Material · 6,680 uses in DB
3.2
kg
Technical gaseous oxygen
Material · 9,025 uses in DB
0.8
m³
Grade 5 worker (welder)
Labor · €19.67/hr
2.4
hrs
Arc welding machine
Equipment · 16,733 uses in DB
2.4
hrs
Electricity
Energy · 23,819 uses in DB
12.6
kWh
5 resources€142.00/joint
11 regions 7 currencies
Earthworks Excavation
per 1 m³
€0
Water (soil moistening)
Material · 7,841 uses in DB
0.05
m³
Worker Category 1
Labor · 7,620 uses in DB
0.35
hrs
Front-end loader, 5t capacity
Equipment · 3,807 uses in DB
0.12
hrs
Flatbed truck, 5t capacity
Equipment · 22,323 uses in DB
0.08
hrs
4 resources€18.00/m³
11 regions 7 currencies
Steel Structure Assembly
per 1 ton
€0
Construction bolts with nuts
Material · 4,136 uses in DB
8.5
kg
MA-0115 protective paint coating
Material · 2,694 uses in DB
1.8
kg
Grade 4 worker (fitter)
Labor · 2,918 uses in DB
6.2
hrs
Mobile crane, 16t capacity
Equipment · 24,807 uses in DB
1.5
hrs
Gas welding and cutting set
Equipment · 4,496 uses in DB
0.8
hrs
Electricity
Energy · 23,819 uses in DB
15.4
kWh
6 resources€485.00/ton
11 regions 7 currencies
COST PER REGION
Cost Databases

55,000+ cost items, 11 regions

The CWICR database covers all construction trades with localized pricing for every major market.

7,024 Resources

Materials, equipment, labor rates, operators, and electricity consumption across all trades.

Materials
4,808
Equipment
1,594
Electricity
512
Labor
68
Operators
42

4,808 Materials

From steel and concrete to insulation and glass — every material a project needs.

Steel & Metal
1,367
Concrete
393
Electrical
263
Paint
223
Wood
173
Pipes
120

11 Regional Databases

Localized pricing in local currency for every major construction market worldwide.

🇬🇧LondonGBP
🇩🇪BerlinEUR
🇺🇸USAUSD
🇫🇷ParisEUR
🇦🇪DubaiAED
🇨🇦TorontoCAD
🇧🇷São PauloBRL
🇮🇳MumbaiINR
🇨🇳ShanghaiCNY
🇪🇸BarcelonaEUR
🇷🇺St. PetersburgRUB
Built With

Modern stack,
battle-tested tools

FastAPI
React 18
TypeScript
PostgreSQL
Tailwind
Docker
YOLOv11
Qdrant
Three.js
Yjs
Rust
i18next
Enterprise Ready

Security you can trust

Self-Hosted
Your data stays on your servers. Full data sovereignty.
Encryption
TLS in transit, AES-256 at rest. JWT + bcrypt auth.
SSO & RBAC
SAML/OIDC single sign-on. Role-based access control.
Audit Log
Full audit trail. Track every change, every user, every time.
Open Source

Built in the open,
for everyone

AGPL-3.0 licensed. Read our code, audit our security, extend with modules, and self-host on your infrastructure. No vendor lock-in.

55K+
Cost Items
20
Languages
6+
Standards
5
CAD Formats
$ docker compose up -d
[+] Running 4/4
✓ Container postgres Started
✓ Container redis Started
✓ Container minio Started
✓ Container openconstructionerp Started

$ curl localhost:8000/health
{"status":"healthy","version":"0.1.0"}

Ready at http://localhost:5173
3 methods
Get Started

Up and running in
under two minutes

Docker

Recommended for most users

docker compose up

pip install

Lightweight local setup

pip install openconstructionerp

Desktop App

Windows, macOS, Linux

Download from GitHub
Why Switch

Replace spreadsheets
and expensive tools

4 hours → 20 minutes

AI-powered takeoff reduces manual measurement time by up to 90%. Upload PDF plans, get quantities automatically.

$0 vs $25,000+/year

Open source and self-hosted. No per-seat licensing, no vendor lock-in. Your data stays on your servers.

55,000+ verified cost items

Built-in CWICR database with materials, labor, equipment for 11 regions. Semantic search finds the right rate instantly.

Ready to modernize your
construction estimates?

Start building accurate estimates in minutes, not days. Free and open source.

Try Live Demo Star on GitHub
Save $25K+/year Setup in 2 min Your data, your server
Your project has
500
positions → you save
$12,500
per year
Contact

Get in touch

Questions, partnerships, or feedback — we'd love to hear from you.

Privacy Policy
Need expert consulting?

Construction digitalization, BIM workflow optimization, cost database setup, AI integration strategy — our team at DataDrivenConstruction has 10+ years of hands-on experience.

Book Consultation
info@datadrivenconstruction.io GitHub DataDrivenConstruction