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, shielding | $400-$900/SF |
| K-12 Education | Prevailing wage, hazmat, phasing | $300-$600/SF |
| Warehouse/Distribution | Clear height, slab flatness, dock count | $80-$180/SF |
| Hotel | Star rating drives finish, FF&E budget | $200-$500/SF |
| Infrastructure (road/mile) | Soil conditions, utilities, traffic control | $2M-$10M/mile |

---

## Phase 2: Quantity Takeoff (QTO)

### CSI MasterFormat Division Structure

Use CSI MasterFormat 2018 for ALL estimates. Every line item maps to a division.

| Division | Name | Typical % of Total |
|---|---|---|
| 01 | General Requirements | 8-12% |
| 02 | Existing Conditions | 1-5% |
| 03 | Concrete | 8-15% |
| 04 | Masonry | 2-6% |
| 05 | Metals (Structural Steel) | 8-15% |
| 06 | Wood, Plastics, Composites | 3-8% |
| 07 | Thermal & Moisture Protection | 4-8% |
| 08 | Openings (Doors/Windows) | 3-7% |
| 09 | Finishes | 8-15% |
| 10 | Specialties | 1-3% |
| 11 | Equipment | 1-5% |
| 12 | Furnishings | 1-5% |
| 13 | Special Construction | 0-3% |
| 14 | Conveying Equipment (Elevators) | 1-4% |
| 21 | Fire Suppression | 2-4% |
| 22 | Plumbing | 4-8% |
| 23 | HVAC | 8-15% |
| 26 | Electrical | 8-15% |
| 27 | Communications | 1-3% |
| 28 | Electronic Safety & Security | 1-3% |
| 31 | Earthwork | 3-8% |
| 32 | Exterior Improvements | 2-6% |
| 33 | Utilities | 2-5% |

### QTO Best Practices

1. **Measure twice, price once** — QTO errors cascade through the entire estimate
2. **Use consistent units** — SF for areas, LF for linear, CY for volume, EA for items
3. **Add waste factors by material:**
   - Concrete: 5-8%
   - Masonry: 3-5%
   - Drywall: 10-12%
   - Roofing: 8-10%
   - Flooring (tile): 10-15%
   - Lumber: 8-10%
   - Rebar: 5-7%
   - Paint: 10-15%
4. **Document measurement methodology** — so anyone can verify
5. **Cross-check totals** — SF of drywall ≈ 2.5-3x floor area (both sides of walls + ceilings)

### QTO Line Item Template

```yaml
line_item:
  division: "03"
  spec_section: "03 30 00"
  description: "Cast-in-Place Concrete - Elevated Slabs"
  quantity: 450
  unit: CY
  unit_cost:
    labor: 85.00
    material: 165.00
    equipment: 25.00
    subcontractor: 0.00
  total_unit_cost: 275.00
  extended_cost: 123750.00
  waste_factor: 0.07
  adjusted_quantity: 481.5
  notes: "4500 PSI, #5 rebar @ 12\" OC EW, 6\" slab"
  source: "Sub quote - ABC Concrete (02/15/2026)"
  confidence: high | medium | low
```

### Quantity Verification Cross-Checks

| Check | Formula | Flag If |
|---|---|---|
| Concrete per SF | Total CY ÷ Building SF | >0.15 CY/SF (unless heavy structure) |
| Steel per SF | Total tons ÷ Building SF | >15 PSF (unless high-rise) |
| Drywall SF | Total drywall SF ÷ Floor SF | <2.0 or >4.0 ratio |
| Electrical per SF | Electrical $ ÷ Building SF | >$35/SF (standard office) |
| Plumbing fixtures | Count vs occupancy | Missing fixtures for code compliance |
| Parking spaces | Per local code requirements | Below minimum ratio |

---

## Phase 3: Pricing & Cost Assembly

### Unit Cost Development

**Cost source hierarchy (most reliable first):**
1. **Subcontractor quotes** (3 minimum per trade) — best for bid estimates
2. **Historical project data** — adjusted for location, time, scope
3. **RSMeans/Gordian data** — industry standard reference
4. **Vendor quotes** — for specific materials/equipment
5. **Published cost guides** — Marshall & Swift, Craftsman

### Labor Cost Build-Up

```yaml
labor_rate_build_up:
  trade: "Carpenter"
  base_wage: 42.50
  fringe_benefits: 18.75   # Health, pension, vacation, training
  payroll_taxes: 8.90      # FICA, FUTA, SUTA, workers comp
  total_burden: 27.65
  burdened_rate: 70.15
  
  productivity_factors:
    weather: 1.00           # 1.0 = normal, 1.15 = winter
    overtime: 1.00          # 1.0 = straight time, 1.5 = OT
    height: 1.00            # 1.0 = ground, 1.10 = >30ft
    congestion: 1.00        # 1.0 = open, 1.15 = tight
    shift: 1.00             # 1.0 = day, 1.10 = swing, 1.15 = night
  adjusted_rate: 70.15
```

### Subcontractor Quote Evaluation

Score each sub quote (use minimum 3 per trade):

| Factor | Weight | 1-5 Score |
|---|---|---|
| Price competitiveness | 30% | |
| Scope completeness (covers all spec sections?) | 25% | |
| Qualifications/exclusions (red flags?) | 20% | |
| Past performance/reputation | 15% | |
| Bond capacity/insurance | 10% | |
| **Weighted Total** | 100% | |

**Red flags in sub quotes:**
- "As needed" or "TBD" line items (scope gap)
- Short validity period (<30 days)
- Unusual exclusions (e.g., electrician excluding wire)
- No reference to spec sections
- Price significantly below others (they missed something)

### Crew Rate Assembly

```
Crew Daily Cost = Σ(Workers × Daily Rate) + Equipment Daily Cost
Crew Daily Output = Units per 8-hour day (from labor standards)
Unit Cost = Crew Daily Cost ÷ Crew Daily Output
```

**Example — Concrete Placement Crew:**
- 1 Foreman @ $75/hr × 8 = $600
- 4 Laborers @ $55/hr × 8 = $1,760
- 1 Vibrator operator @ $60/hr × 8 = $480
- Concrete pump (daily rental) = $1,200
- **Crew Daily Cost = $4,040**
- Daily output: 50 CY
- **Unit Labor+Equipment Cost = $80.80/CY**
- Material (concrete delivered) = $165/CY
- **Total in-place cost = $245.80/CY**

---

## Phase 4: Indirect Costs & Markups

### General Conditions (Division 01) Checklist

| Item | Duration-Based? | Typical Range |
|---|---|---|
| Project Manager | Yes | $12K-$18K/month |
| Superintendent | Yes | $10K-$16K/month |
| Project Engineer | Yes | $8K-$12K/month |
| Field Office (trailer) | Yes | $1K-$3K/month |
| Temporary utilities | Yes | $2K-$5K/month |
| Temporary toilets | Yes | $200-$500/month each |
| Dumpsters/waste removal | Yes | $1K-$4K/month |
| Safety equipment/supplies | Yes | $500-$2K/month |
| Small tools & consumables | Lump | 1-2% of labor |
| Final cleaning | Lump | $0.15-$0.50/SF |
| Permits (building) | Lump | Varies by jurisdiction |
| Insurance (Builder's Risk) | Lump | 0.5-1.5% of cost |
| Performance/Payment Bond | Lump | 1-3% of contract |
| Testing & inspection | Lump | 0.5-1.5% of cost |
| As-built documentation | Lump | $5K-$25K |
| Commissioning support | Lump | $10K-$50K |

**Rule of thumb:** General conditions = 8-15% of direct costs (lower for large projects, higher for small/complex).

### Markup Stack

```yaml
markup_calculation:
  direct_costs: 2500000
  
  general_conditions:
    percentage: 0.10
    amount: 250000
    
  subtotal_1: 2750000
  
  overhead:
    percentage: 0.05     # Home office overhead
    amount: 137500
    
  subtotal_2: 2887500
  
  profit:
    percentage: 0.05     # Varies by market/risk
    amount: 144375
    
  subtotal_3: 3031875
  
  contingency:
    design_contingency: 0.05    # For incomplete drawings
    construction_contingency: 0.03  # For unforeseen conditions
    amount: 242550
    
  bond:
    percentage: 0.015
    amount: 49118
    
  escalation:
    rate: 0.04           # Annual
    months_to_midpoint: 8
    amount: 88536
    
  total_estimate: 3412079
  cost_per_sf: 341.21    # For 10,000 SF building
```

### Contingency Guide

| Estimate Type | Design Contingency | Construction Contingency |
|---|---|---|
| Order of Magnitude | 15-25% | 10-15% |
| Conceptual | 10-15% | 5-10% |
| Detailed | 3-8% | 3-5% |
| Definitive/Bid | 0-3% | 2-3% |

**Contingency is NOT profit padding.** Track and justify every contingency draw.

---

## Phase 5: Bid Preparation & Strategy

### Bid/No-Bid Decision Scorecard

Score 1-5 for each (minimum 30 to bid):

| Factor | Weight | Score |
|---|---|---|
| Project type experience | 3x | |
| Client relationship/history | 2x | |
| Current workload capacity | 3x | |
| Geographic fit | 2x | |
| Profit potential | 3x | |
| Competition level (fewer = better) | 2x | |
| Risk profile (lower = better) | 3x | |
| Schedule feasibility | 2x | |
| Bonding capacity available | 2x | |
| **Weighted Total** | /110 | |

### Bid Day Checklist

**48 hours before:**
- [ ] All sub quotes received (minimum 3 per trade)
- [ ] All material quotes current (check expiration dates)
- [ ] Addenda reviewed and incorporated (ALL of them)
- [ ] Scope gaps identified and plugged
- [ ] Math verified (independent check)

**Day of bid:**
- [ ] Final sub quotes plugged in
- [ ] Markup/profit decision finalized
- [ ] Alternates priced if required
- [ ] Unit prices calculated if required
- [ ] Bid bond secured
- [ ] Bid form completed correctly (every blank filled)
- [ ] Acknowledge ALL addenda on bid form
- [ ] Authorized signature
- [ ] Delivered before deadline (allow 1+ hour buffer)

### Competitive Bid Strategy

**Market conditions affect markup:**
- Hot market (lots of work): Markup 8-12% (O&P combined)
- Normal market: Markup 6-10%
- Slow market: Markup 3-6%
- Must-win/strategic: Markup 2-4% (minimum to cover overhead)

**Bid spread analysis** (track your results):
```
Bid Spread = (Your Bid - Low Bid) ÷ Low Bid × 100
```
- Consistently >10% high → Your costs are inflated or productivity assumptions too conservative
- Consistently <2% from low → You might be leaving money on the table
- Target: Within 3-5% of winning bid

---

## Phase 6: Value Engineering (VE)

### VE Opportunity Matrix

| System | VE Opportunity | Typical Savings | Risk Level |
|---|---|---|---|
| Structural | Steel vs concrete frame | 5-15% of structure | Medium |
| Foundations | Spread vs mat vs piles | 10-30% of foundation | High (geotech dependent) |
| Envelope | Curtain wall vs storefront | 15-30% of facade | Low-Medium |
| Roofing | TPO vs modified bitumen | 10-20% of roofing | Low |
| Mechanical | VAV vs VRF | 10-25% of HVAC | Medium |
| Electrical | LED fixtures, panel optimization | 5-15% of electrical | Low |
| Finishes | Material substitutions | 10-40% of finishes | Low |
| Site | Reduce import/export of soil | 10-30% of sitework | Medium |

### VE Proposal Template

```yaml
ve_item:
  number: VE-001
  description: "Substitute VRF system for conventional VAV"
  division: "23"
  
  original:
    description: "VAV air handling system with ductwork"
    cost: 850000
    
  proposed:
    description: "Variable Refrigerant Flow (VRF) with DOAS"
    cost: 680000
    
  savings: 170000
  savings_pct: 20%
  
  impact:
    schedule: "Reduces mechanical rough-in by 2 weeks"
    quality: "Better zone control, lower operating cost"
    maintenance: "Higher per-unit cost but less ductwork"
    code_compliance: "Meets ASHRAE 90.1, verify local amendments"
    
  risk: medium
  recommendation: accept | reject | modify
  requires_redesign: yes | no
  redesign_cost: 15000
  net_savings: 155000
```

### VE Decision Rules

1. **Never VE life safety** — fire protection, structural integrity, egress
2. **Calculate lifecycle cost** — cheap upfront ≠ cheap over 20 years
3. **Get architect/engineer sign-off** before bidding VE alternates
4. **Document everything** — VE that isn't documented becomes a scope gap
5. **Owner decides** — present options with data, let them choose

---

## Phase 7: Change Order Management

### Change Order Pricing Rules

**Contractor markup on changes (typical):**
| Tier | Self-Performed Work | Subcontractor Work |
|---|---|---|
| Overhead | 10% | 5% |
| Profit | 10% | 5% |
| Bond | Add actual % | Add actual % |

**Time & Material (T&M) documentation requirements:**
- Daily time sheets signed by owner's rep
- Material invoices with delivery tickets
- Equipment logs with hours
- Photos of work in progress

### Change Order YAML Template

```yaml
change_order:
  number: CO-001
  date: ""
  description: ""
  
  reason:
    type: owner-directed | unforeseen-condition | design-error | code-change | scope-clarification
    rfi_number: ""
    
  cost_breakdown:
    labor:
      hours: 0
      rate: 0
      total: 0
    material:
      items: []
      total: 0
    equipment:
      items: []
      total: 0
    subcontractor:
      items: []
      total: 0
    direct_cost: 0
    markup: 0.15
    total_cost: 0
    
  schedule_impact:
    days: 0
    critical_path: yes | no
    explanation: ""
    
  status: pending | approved | rejected | negotiating
```

### Change Order Negotiation Tips

1. **Price it immediately** — delay weakens your position
2. **Submit with backup** — labor rates, material quotes, productivity analysis
3. **Separate time from money** — negotiate schedule impact independently
4. **Track cumulative impact** — 20 small changes = major schedule disruption (even if each is "0 days")
5. **Constructive acceleration** — if owner delays approval but expects same completion, document it
6. **Unit price book** — agree on unit prices at contract start for common change types

---

## Phase 8: Cost Control During Construction

### Earned Value Management (EVM)

```
Budget at Completion (BAC) = Total budget
Planned Value (PV) = Budgeted cost of work scheduled
Earned Value (EV) = Budgeted cost of work performed
Actual Cost (AC) = Actual cost of work performed

Schedule Performance Index (SPI) = EV / PV
  >1.0 = ahead of schedule
  <1.0 = behind schedule

Cost Performance Index (CPI) = EV / AC
  >1.0 = under budget
  <1.0 = over budget

Estimate at Completion (EAC) = BAC / CPI
Variance at Completion (VAC) = BAC - EAC
```

### Monthly Cost Report Template

```yaml
cost_report:
  project: ""
  period: ""
  report_date: ""
  
  summary:
    original_contract: 0
    approved_changes: 0
    pending_changes: 0
    current_budget: 0
    committed_cost: 0      # Subcontracts + POs
    actual_cost_to_date: 0
    forecast_to_complete: 0
    estimate_at_completion: 0
    variance: 0
    contingency_remaining: 0
    
  schedule:
    percent_complete: 0
    spi: 0
    cpi: 0
    days_ahead_behind: 0
    
  cash_flow:
    billed_to_date: 0
    collected_to_date: 0
    retention_held: 0
    
  risk_items:
    - description: ""
      potential_cost: 0
      probability: high | medium | low
      mitigation: ""
```

### Cost Control Red Flags

| Signal | What It Means | Action |
|---|---|---|
| CPI < 0.95 in first 25% | Systemic cost overrun | Root cause analysis NOW |
| Contingency burn > schedule % | Burning contingency too fast | Tighten change management |
| >5 pending COs unsigned | Cash flow risk, scope dispute | Escalate to PM/owner |
| Sub invoices > committed | Sub performing extra work | Verify scope, issue CO or stop work |
| Retainage release requests early | Sub cash flow problems | Monitor closely, check lien waivers |

---

## Phase 9: Specialty Estimate Types

### Renovation/Remodel Estimating

**Add these factors to renovation estimates:**
- Selective demolition: Price item-by-item (never lump sum)
- Hazmat survey: Asbestos ($3-5K), lead paint ($2-4K) — MANDATORY before bid
- Abatement: 2-5x removal cost vs new construction equivalent
- Protection of existing: Dust barriers, floor protection, HVAC isolation
- Working hours: Occupied buildings = nights/weekends = premium labor
- Discovery allowance: 10-15% for hidden conditions behind walls
- Temporary facilities: HVAC, power, restrooms during renovation
- Phasing/sequencing: Adds 15-30% management overhead

### Sitework Estimating

**Critical factors:**
```yaml
sitework_checklist:
  geotechnical:
    - Soil bearing capacity
    - Water table depth  
    - Rock depth (blasting vs mechanical?)
    - Contamination (Phase I/II ESA results)
    
  earthwork:
    cut_cy: 0
    fill_cy: 0
    import_export: 0    # Net CY to haul
    haul_distance_miles: 0
    compaction_required: standard | proctor_95 | proctor_98
    
  utilities:
    water_tap_fee: 0
    sewer_tap_fee: 0
    fire_line: 0
    storm_detention: required | not_required
    
  paving:
    asphalt_sy: 0
    concrete_sy: 0
    curb_lf: 0
    striping_lf: 0
    
  landscape:
    sod_sf: 0
    trees_ea: 0
    irrigation: yes | no
    erosion_control: silt_fence | inlet_protection | retention_pond
```

### MEP (Mechanical/Electrical/Plumbing) Quick Checks

| System | $/SF Benchmark (Commercial Office) | Flag If |
|---|---|---|
| HVAC | $25-$50/SF | >$55 or <$20 |
| Plumbing | $12-$25/SF | >$30 or <$8 |
| Fire Protection | $4-$8/SF | >$10 or <$3 |
| Electrical (power) | $18-$35/SF | >$40 or <$12 |
| Low voltage/data | $5-$12/SF | >$15 or <$3 |
| **Total MEP** | **$64-$130/SF** | **>$150 or <$46** |

---

## Phase 10: Escalation & Location Adjustments

### Construction Cost Escalation

```
Future Cost = Current Cost × (1 + Annual Rate) ^ (Months to Midpoint ÷ 12)
```

**Recent escalation trends (US):**
- 2020-2022: 8-15% annually (pandemic/supply chain)
- 2023-2024: 4-6% annually (normalizing)
- 2025-2026 forecast: 3-5% annually
- Long-term average: 3-4% annually

**Always escalate to the MIDPOINT of construction**, not the start.

### Location Factor Application

```
Local Cost = National Average Cost × City Cost Index
```

**Sample RSMeans City Cost Indices (100 = national average):**

| City | Index | | City | Index |
|---|---|---|---|---|
| New York, NY | 130-145 | | Dallas, TX | 88-95 |
| San Francisco, CA | 125-140 | | Atlanta, GA | 90-97 |
| Boston, MA | 115-130 | | Phoenix, AZ | 88-94 |
| Chicago, IL | 110-120 | | Denver, CO | 95-105 |
| Seattle, WA | 108-118 | | Nashville, TN | 88-95 |
| Washington, DC | 100-110 | | Charlotte, NC | 85-92 |
| Miami, FL | 92-100 | | Houston, TX | 85-93 |
| Minneapolis, MN | 105-112 | | Rural areas | 70-85 |

---

## Phase 11: Estimate Quality Review

### 100-Point Estimate Quality Rubric

| Dimension | Weight | Criteria |
|---|---|---|
| **Scope completeness** | 20 | All spec sections priced, no gaps, exclusions documented |
| **Quantity accuracy** | 20 | QTO verified, cross-checks pass, waste factors applied |
| **Pricing basis** | 15 | 3+ sub quotes per trade, current material prices, documented sources |
| **Indirect costs** | 10 | GCs detailed (not lump), schedule-based items tied to duration |
| **Markup appropriateness** | 10 | Market-competitive, risk-adjusted, contingency justified |
| **Documentation** | 10 | Assumptions listed, basis of estimate narrative, organized by division |
| **Adjustments** | 10 | Location factor applied, escalation to midpoint, seasonal factors |
| **Presentation** | 5 | Professional format, clear summary, alternates separated |

**Grading:** 90+ = Bid-ready | 75-89 = Needs refinement | 60-74 = Major gaps | <60 = Redo

### Peer Review Checklist

- [ ] All addenda acknowledged and incorporated?
- [ ] Spec sections cross-referenced to QTO? (no orphan specs)
- [ ] Sub quotes match scope of work? (read exclusions!)
- [ ] General conditions duration matches schedule?
- [ ] Bond premium calculated on TOTAL including markups?
- [ ] Sales tax applied correctly? (varies by state, some exempt)
- [ ] Prevailing wage rates used if required? (Davis-Bacon, state)
- [ ] Owner-furnished items excluded from pricing?
- [ ] Alternates priced separately and clearly?
- [ ] Math checked independently? (not just formula check — spot-check quantities)

---

## Phase 12: Common Mistakes & Edge Cases

### 10 Estimate-Killing Mistakes

| # | Mistake | Prevention |
|---|---|---|
| 1 | Missing addenda | Checklist: log every addendum, initial when incorporated |
| 2 | Incomplete sub scope | Write scope sheets with inclusions AND exclusions |
| 3 | Wrong labor rates | Verify union vs open shop, prevailing wage, location |
| 4 | No escalation | ALWAYS escalate to construction midpoint |
| 5 | Lump sum general conditions | Detail every line item tied to schedule |
| 6 | Ignoring phasing | Multi-phase = mobilize/demobilize multiple times |
| 7 | Missing temporary work | Shoring, dewatering, winter protection, dust control |
| 8 | Under-priced site conditions | Get geotech report BEFORE estimating foundations |
| 9 | Scope gaps between trades | Who installs the backing for the TV mount? |
| 10 | Not reading the fine print | Liquidated damages, retainage, payment terms |

### Edge Cases

**Occupied building renovation:**
- Work hours restriction → labor premium 15-40%
- Dust/noise control → add $2-5/SF
- Security/escort requirements → add supervision cost
- Existing condition discovery → 10-15% allowance minimum

**Remote/rural project:**
- Travel/per diem for crews → $150-$250/worker/day
- Material delivery premium → 5-15% depending on distance
- Limited sub market → fewer quotes, less competitive pricing
- Equipment mobilization → long haul costs for cranes, excavators

**Fast-track schedule:**
- Overtime premium → plan 20-30% labor cost increase
- Acceleration costs → additional supervision, equipment
- Out-of-sequence work → productivity losses 10-25%
- Premium material delivery → expediting fees

**Public/government work:**
- Prevailing wages → 20-40% labor cost increase
- DBE/MBE/WBE goals → subcontracting requirements, good faith effort
- Buy American/Buy America → material cost premium 10-30%
- Bid protest risk → ensure perfect compliance with ITB

**Design-Build:**
- Design contingency higher (incomplete docs at pricing)
- Self-perform vs sub trade-offs
- Design liability insurance (professional liability)
- Allowances for owner decisions not yet made

---

## Natural Language Commands

| Command | Action |
|---|---|
| "Estimate this project" | Run full estimate workflow from Phase 1 |
| "Price [division/trade]" | Develop unit costs for specific trade |
| "Check my quantities" | Run QTO verification cross-checks |
| "Value engineer [system]" | Generate VE alternatives with savings |
| "Write change order for [scope]" | Generate CO with pricing and backup |
| "Compare sub quotes for [trade]" | Score and compare subcontractor bids |
| "Monthly cost report" | Generate EVM-based cost report |
| "Bid/no-bid analysis for [project]" | Run decision scorecard |
| "Location adjust to [city]" | Apply RSMeans location factor |
| "Escalate costs to [date]" | Calculate escalation to future midpoint |
| "Review my estimate" | Run 100-point quality rubric |
| "Generate bid summary" | Format estimate for bid submission |