Let’s build a professional SOP: BOQ (Bill of Quantities) for your construction company — clear, practical, and ready for real site use.
🏗️ SOP: BILL OF QUANTITIES (BOQ)
🎯 1. PURPOSE
To ensure accurate cost estimation, material control, and project budgeting for all construction projects.
👉 BOQ helps you:
-
Control Cost
-
Plan Procurement
-
Manage Construction Work
-
Avoid Loss / Over-budget
📌 2. SCOPE
This SOP applies to:
- Residential buildings (your main projects)
- Renovation works
- Structural + Architectural + MEP works
👷 3. RESPONSIBLE TEAM
| Role | Responsibility |
|---|---|
| Project Manager | Approve BOQ |
| QS (Quantity Surveyor) | Prepare BOQ |
| Site Engineer | Verify quantities |
| Procurement Team | Use BOQ for purchasing |
| Director (You) | Final control |
🧱 4. BOQ STRUCTURE (STANDARD FORMAT)
📊 Main Sections:
- Preliminaries
- Earthwork
- Concrete Work
- Reinforcement (Rebar)
- Formwork
- Masonry
- Plastering
- Finishing (Tiles, Paint)
- Roofing
- Doors & Windows
- Electrical Work
- Plumbing Work
📋 Example BOQ Table
| No | Description | Unit | Quantity | Unit Price | Amount |
|---|---|---|---|---|---|
| 1 | Excavation | m³ | 50 | $8 | $400 |
| 2 | Concrete C25 | m³ | 30 | $95 | $2,850 |
| 3 | Rebar DB16 | kg | 2,000 | $1.2 | $2,400 |
👉 Formula:
-
Amount = Quantity × Unit Price
🧮 5. STEP-BY-STEP PROCESS
🔹 Step 1: Review Drawings
- Structural drawings
- Architectural drawings
- MEP drawings
👉 Goal: Understand full project scope
🔹 Step 2: Quantity Take-Off (QTO)
Calculate:
- Concrete (m³)
- Rebar (kg)
- Formwork (m²)
- Masonry (m² / m³)
👉 Use:
- AutoCAD / Excel / Manual calculation
🔹 Step 3: Apply Unit Rates
- Use market price (Cambodia local)
- Update regularly
👉 Example:
- Concrete = $90–100/m³
- Rebar = $1.1–1.3/kg
🔹 Step 4: Prepare BOQ Sheet
Use Excel with:
- Clear item codes
- Grouped work sections
- Summary page
🔹 Step 5: Verification
- Site Engineer checks quantity
- Compare with drawing
- Check mistakes
🔹 Step 6: Approval
- PM reviews
- Director approves
🔹 Step 7: Issue BOQ
Used for:
- Budget planning
- Procurement
- Client quotation
⚙️ 6. BOQ CONTROL SYSTEM (IMPORTANT)
✅ Rule 1: No Work Without BOQ
👉 Every activity must be in BOQ
✅ Rule 2: Variation Control
If change:
- Add Variation Order (VO)
- Update BOQ
✅ Rule 3: Site Tracking
-
Compare Planned vs Actual
- Weekly check
✅ Rule 4: Material Control
- BOQ = Purchase reference
- Avoid over-order
📉 7. COMMON MISTAKES (AVOID THIS)
❌ Missing items (very dangerous)
❌ Wrong unit (m² vs m³)
❌ Not
including waste (%)
❌ Using outdated prices
❌ No checking before
approval
📈 8. PROFESSIONAL SYSTEM (UPGRADE LEVEL)
🔥 Level 1 (Basic)
- BOQ in Excel
🔥 Level 2 (Professional)
- BOQ + Cost Control System
🔥 Level 3 (Company Level)
-
BOQ linked with:
- KPI system
- Procurement
- Site progress
👉 This is what big companies do.
🧠 9. SIMPLE WAY TO REMEMBER
👉 BOQ = WHAT + HOW MUCH + HOW MUCH MONEY
- WHAT → Work item
- HOW MUCH → Quantity
- MONEY → Cost
🚀 FINAL ADVICE (FROM MR. T)
Sarim, if you master BOQ, you control:
- 💰 Profit
- 📦 Materials
- ⏱️ Time
👉 No BOQ = Blind Construction
👉 Strong BOQ = Professional Company
If you want next level, I can help you:
✅ Turn this into
HTML Smart-Book post (your blog style)
✅ Create
Excel BOQ Template (auto calculation)
✅ Build
BOQ + Procurement + KPI system (full company system)