afrexai-construction-estimator

# Construction Estimator Pro

> Complete construction estimating methodology — from quantity takeoff to bid submission. Zero dependencies.

---

## Phase 1: Project Classification & Estimate Type

### Estimate Type Decision Matrix

| Project Stage | Estimate Type | Accuracy | Basis | Use Case |
|---|---|---|---|---|
| Concept | Order of Magnitude | -30% to +50% | SF/unit costs | Go/no-go decisions |
| Schematic | Conceptual/Budget | -15% to +30% | Assembly costs | Budget approval |
| Design Dev | Detailed | -10% to +15% | Quantity takeoff | GMP/bid preparation |
| Construction Docs | Definitive/Bid | -5% to +10% | Full QTO + subs | Lump sum bid |
| Construction | Control | Actual costs | Committed + forecast | Cost management |

### Project Brief YAML

```yaml
project:
  name: ""
  number: ""
  type: residential | commercial | industrial | infrastructure | renovation
  delivery: design-bid-build | design-build | CM-at-risk | IPD
  location:
    city: ""
    state: ""
    zip: ""
    location_factor: 1.00  # RSMeans city cost index / national average
  owner: ""
  architect: ""
  
scope:
  gross_sf: 0
  stories: 0
  site_acres: 0
  description: ""
  
schedule:
  bid_date: ""
  construction_start: ""
  substantial_completion: ""
  duration_months: 0
  
estimate:
  type: order-of-magnitude | conceptual | detailed | definitive
  base_date: ""  # Date costs are based on
  escalation_rate: 0.04  # Annual construction cost escalation
  
assumptions:
  - ""
exclusions:
  - ""
allowances:
  - item: ""
    amount: 0
```

### Project Type Quick Reference

| Type | Key Considerations | Typical $/SF Range (2024-2026) |
|---|---|---|
| Single Family Residential | Foundation type, finishes grade, energy code | $150-$400/SF |
| Multi-Family | Unit mix, parking ratio, amenities | $200-$450/SF |
| Office (Class A) | Curtain wall, MEP density, TI allowance | $250-$550/SF |
| Retail | Shell vs TI, storefront, grease traps | $150-$350/SF |
| Healthcare/Hospital | Life safety, med gas, s...

# 📊 AfrexAI Construction Estimator Pro

> Complete construction estimating methodology — from quantity takeoff to bid submission. Zero dependencies.

## What This Does

Turns your AI agent into a construction estimating powerhouse:

- **Full CSI MasterFormat** structure (Divisions 01-33)
- **Quantity takeoff** with waste factors, cross-checks, and verification formulas
- **Labor cost build-up** with burden rates, productivity factors, and crew assembly
- **Sub quote evaluation** scoring system (never pick the wrong sub again)
- **Markup stack** — GCs, overhead, profit, contingency, bond, escalation
- **Value engineering** framework with savings analysis and lifecycle cost
- **Change order management** with pricing rules and negotiation strategy
- **Earned Value Management** for cost control during construction
- **Specialty estimates** — renovation, sitework, MEP benchmarks
- **Location & escalation adjustments** with RSMeans city cost indices
- **100-point quality rubric** to catch errors before they cost you money

Covers residential, commercial, industrial, infrastructure, and renovation projects.

## Install

```bash
clawhub install afrexai-construction-estimator
```

## Quick Start

Tell your agent:
- "Estimate this 10,000 SF office build in Denver"
- "Compare these 3 concrete sub quotes"
- "Value engineer the HVAC system"
- "Generate a monthly cost report for the Johnson project"

## ⚡ Level Up

**Need the full Construction AI Context Pack?** Get industry-specific estimating databases, RFI management, schedule integration, safety compliance, and 50+ construction-specific templates:

→ [**AfrexAI Construction Context Pack — $47**](https://afrexai-cto.github.io/context-packs/)

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