bim-cost-estimation-cwicr

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---
name: "bim-cost-estimation-cwicr"
description: "Automated cost estimation from BIM models using DDC CWICR database with 55,719 work items. AI classification + vector search for accurate pricing."
homepage: "https://datadrivenconstruction.io"
metadata: {"openclaw":{"emoji":"🏗️","os":["darwin","linux","win32"],"homepage":"https://datadrivenconstruction.io","requires":{"bins":["python3"],"env":["OPENAI_API_KEY","QDRANT_URL"]},"primaryEnv":"OPENAI_API_KEY"}}
---

# BIM Cost Estimation with DDC CWICR

Generate accurate cost estimates from BIM models using AI classification and the DDC CWICR construction cost database.

## Business Case

**Problem**: Traditional cost estimation:
- Manual and time-consuming (weeks for detailed estimate)
- Subjective and inconsistent between estimators
- Requires specialized knowledge
- Difficult to update with design changes

**Solution**: Automated BIM-to-cost pipeline:
- Extract quantities directly from model
- AI classifies elements to work items
- Vector search finds matching prices in CWICR
- Complete estimate in hours, not weeks

**ROI**: 80% reduction in estimation time, consistent methodology

## System Architecture

```
┌──────────────────────────────────────────────────────────────────────────┐
│                  BIM TO COST ESTIMATION PIPELINE                          │
├──────────────────────────────────────────────────────────────────────────┤
│                                                                           │
│   ┌─────────┐     ┌─────────┐     ┌─────────┐     ┌─────────────────┐   │
│   │ BIM     │     │ DDC     │     │ AI      │     │ DDC CWICR       │   │
│   │ Model   │────►│Converter│────►│ LLM     │────►│ Vector Search   │   │
│   │.rvt/.ifc│     │         │     │         │     │ (Qdrant)        │   │
│   └─────────┘     └─────────┘     └─────────┘     └─────────────────┘   │
│                        │              │                    │             │
│                        ▼              ▼                    ▼             │
│                   ┌─────────┐    ┌─────────┐         ┌──────────┐       │
│                   │ .xlsx   │    │ Work    │         │ Matched  │       │
│                   │ QTO     │    │ Items   │         │ Rates    │       │
│                   └─────────┘    └─────────┘         └──────────┘       │
│                        │              │                    │             │
│                        └──────────────┼────────────────────┘             │
│                                       ▼                                  │
│                              ┌─────────────────┐                        │
│                              │ COST ESTIMATE   │                        │
│                              │                 │                        │
│                              │ • By element    │                        │
│                              │ • By trade      │                        │
│                              │ • By phase      │                        │
│                              │ • Resources     │                        │
│                              └─────────────────┘                        │
│                                                                           │
└──────────────────────────────────────────────────────────────────────────┘
```

## DDC CWICR Database

```yaml
Database Overview:
  work_items: 55,719
  resources: 27,672
  languages: 9 (AR, DE, EN, ES, FR, HI, PT, RU, ZH)
  fields_per_item: 85
  embedding_model: text-embedding-3-large (3072d)
  vector_db: Qdrant

Collections:
  - ddc_cwicr_ar  # Arabic (Dubai prices)
  - ddc_cwicr_de  # German (Berlin prices)
  - ddc_cwicr_en  # English (Toronto prices)
  - ddc_cwicr_es  # Spanish (Barcelona prices)
  - ddc_cwicr_fr  # French (Paris prices)
  - ddc_cwicr_hi  # Hindi (Mumbai prices)
  - ddc_cwicr_pt  # Portuguese (São Paulo prices)
  - ddc_cwicr_ru  # Russian (St. Petersburg prices)
  - ddc_cwicr_zh  # Chinese (Shanghai prices)
```

## Pipeline