A Bill of Quantities (BOQ) is the single most important document in any construction project. It is a comprehensive, itemized list of every material, labor task, and overhead cost required to build your house. Think of it as the complete shopping list and labor checklist for your entire construction project, with exact quantities and unit prices attached to every item.
The BOQ serves three critical purposes for homeowners. First, it allows you to verify pricing — you can check whether each material's unit price matches current market rates, catching overpriced items before you sign the contract. Second, it enables you to compare quotes from multiple contractors on an apples-to-apples basis, because every contractor is pricing the same items. Third, it gives you a framework for tracking spending during construction — you know exactly how much each phase should cost and can flag deviations early.
Without a BOQ, you are essentially writing a blank check. Your contractor says "it will cost ₱3.5 million" but you have no way to verify whether that number is fair, padded, or missing items. The BOQ is your protection. For context on current market prices, see our <a href="/blog/cost-philippines-2026">2026 construction cost guide</a> and our <a href="/blog/construction-material-prices-philippines">updated material prices list</a>.
Every reputable contractor should be able to provide a detailed BOQ. If a contractor gives you a lump-sum quote without a BOQ and refuses to itemize, treat it as a red flag. They may be hiding inflated prices, missing items, or planning to cut corners on materials.
A 2025 DPWH investigation found government construction materials priced up to 75% above market rates. If government projects get overcharged, imagine what happens to homeowners without a BOQ to verify prices.
A standard Philippine construction BOQ is organized into a table with five key columns. Understanding these columns is the first step to reading any BOQ:
| Column | What It Contains | What to Check |
|---|---|---|
| Description | Name and specification of each item (e.g., "Portland Cement Type 1, 40kg bag") | Make sure specs are complete — not just "cement" but the type, size, and brand if specified |
| Quantity | The exact amount needed (e.g., 450 bags) | Cross-check against your plans — a 100 sqm house typically needs 350-500 bags of cement |
| Unit | The unit of measurement (bags, pieces, cu.m, lin.m, sq.m, sets) | Make sure units match standard industry practice — cement is per bag, not per kilo |
| Unit Price | Cost per single unit (e.g., ₱225/bag) | Compare against current DPWH/PSA market prices — this is where overcharging hides |
| Amount | Quantity × Unit Price (e.g., 450 × ₱225 = ₱101,250) | Verify the math — surprisingly common to find arithmetic errors |
The BOQ is typically organized into five major work divisions, each covering a different phase or system of your house:
Division 1: Structural Works: Foundation, columns, beams, floor slabs, walls — the skeleton of your house. This is the largest cost division, typically 35-45% of total materials. Includes cement, hollow blocks, reinforcing steel bars, sand, gravel, formwork lumber, and structural steel.
Division 2: Roofing Works: Roof framing, roofing sheets, gutters, flashing, insulation. Typically 8-12% of total materials. Includes purlins, metal roofing sheets (measured in linear meters), ridge rolls, and waterproofing.
Division 3: Electrical Works: All wiring, outlets, switches, panels, fixtures, and grounding. Typically 8-12% of total materials. Includes wire (measured in meters by gauge), outlet boxes, breaker panels, and light fixtures.
Division 4: Plumbing & Sanitary Works: Water supply pipes, drainage pipes, fixtures (toilets, sinks, faucets), septic system. Typically 6-10% of total materials. Includes PVC pipes (measured by diameter and length), fittings, and fixture sets.
Division 5: Finishing Works: Tiles, paint, doors, windows, ceilings, cabinetry. Typically 20-35% of total materials depending on finish level. This division varies the most between economic, standard, and premium builds.
To understand how these divisions break down by percentage, see our <a href="/blog/contractor-overcharging-philippines">guide on spotting contractor overcharging</a>.
Each division of the BOQ has specific items you should understand and verify. Here is what to look for in each section:
Structural works is the largest and most critical division. Key items to verify:
Portland Cement (40kg bags): A 100 sqm standard house typically requires 350-500 bags. Current market price: ₱210-₱240/bag. If your BOQ shows 600+ bags for a simple 100 sqm house, question the quantity. If the unit price exceeds ₱260/bag, the price is inflated.
Reinforcing Steel Bars (Rebar): Common sizes: 10mm (₱135-₱160/pc), 12mm (₱200-₱250/pc), 16mm (₱360-₱400/pc). All standard lengths are 6 meters. Check that the sizes match your structural engineer's plans. 10mm is used for slabs and stirrups, 12mm for small columns and beams, 16mm for main columns and beams.
Concrete Hollow Blocks (CHB): 4" CHB (₱12-₱16/pc) for interior partition walls, 6" CHB (₱18-₱24/pc) for exterior and load-bearing walls. A 100 sqm house typically needs 3,000-5,000 pieces depending on wall layout. Verify the count against your floor plan.
Sand and Gravel: Washed sand: ₱1,200-₱1,650/cu.m. Gravel 3/4": ₱1,600-₱2,100/cu.m. These prices vary significantly by region due to transportation costs. Island locations can be 30-50% higher.
Metal Roofing Sheets: Measured in linear meters, not square meters. Current price: ₱270-₱320 per linear meter for standard gauge (0.4mm). Premium gauge (0.5mm) costs ₱350-₱420/lin.m. Verify the gauge specified — some contractors quote premium gauge but install standard.
Roof Framing: Check whether the BOQ specifies steel (C-purlins) or wood (coco lumber/good lumber). Steel framing costs more upfront but lasts longer. If wood is specified, ensure it's treated lumber rated for structural use.
Electrical Wire (THHN/THWN): Measured in meters by wire gauge. Common sizes: #14 AWG for lighting circuits, #12 AWG for outlet circuits, #10 AWG for air conditioning and heavy appliances. Verify total meter-run against the number of outlets and circuits in your electrical plan.
Outlets and Switches: Count the total outlets and switches in your floor plan and compare against the BOQ. A standard 100 sqm house has 25-40 outlets and 15-25 switches. Each outlet box costs ₱80-₱250 depending on brand and type (standard vs universal vs USB).
PVC Pipes: Specified by diameter: 1/2" for water supply branches, 3/4" for water supply mains, 2" for lavatory/sink drains, 3" for shower/floor drains, 4" for toilet waste lines. Check that the correct diameter is specified for each use — undersized waste pipes cause blockages.
Fixture Sets: Toilet set (₱3,500-₱15,000), lavatory with faucet (₱2,000-₱8,000), kitchen sink (₱2,500-₱10,000), shower set (₱1,500-₱8,000). Verify the brand and model specified matches what will actually be installed.
Floor and Wall Tiles: Measured in square meters. 40×40cm standard tiles: ₱150-₱190/sq.m. 60×60cm porcelain tiles: ₱280-₱500/sq.m. Add 10% wastage to the net area. If your BOQ shows 20% or more wastage, the quantity may be padded.
Paint: Measured in gallons. Latex paint: ₱600-₱700/gallon (covers approximately 25-30 sq.m per coat). Semi-gloss for kitchens and bathrooms: ₱700-₱900/gallon. A 100 sqm house typically needs 15-25 gallons total for 2 coats interior + exterior.
1. Are the Quantities Realistic?: Cross-reference BOQ quantities against your architectural plans and standard construction ratios. A 100 sqm house should need 350-500 bags of cement, 3,000-5,000 CHBs, and 15-25 gallons of paint. If quantities are significantly higher, your contractor may be padding. If significantly lower, they may be planning to cut corners or hit you with change orders later.
2. Are Unit Prices Current?: Compare every major item's unit price against current DPWH CMPD prices and market rates. Cement should be ₱210-₱240/bag, not ₱280. Rebar 12mm should be ₱200-₱250, not ₱320. Even small per-unit markups compound into large overcharges across hundreds or thousands of units.
3. Is Labor Listed Separately?: Labor should be a separate line item or section, not hidden inside material prices. If your contractor bundles labor into material costs, you cannot verify either one. Labor typically runs 30% of total cost. A ₱3.5M project should show approximately ₱1.05M in labor.
4. Is the Overhead Percentage Reasonable?: Contractor overhead and profit should be 10-15% of the total. If it's listed as 20% or more, you're overpaying. Some contractors hide excessive overhead by inflating individual material prices instead of listing it separately — another reason to check unit prices.
5. Are Any Major Items Missing?: Common items that get "accidentally" left out: septic tank, perimeter fence, grading and filling, water tank, electrical panel upgrades, and finishing items like closet doors and bathroom accessories. Missing items become expensive change orders during construction.
Audit Your Contractor's Quote → Instant Price Check
Here is a simplified BOQ summary for a 100 sqm standard-finish house in a provincial area (2026 prices). This gives you a realistic benchmark to compare your contractor's BOQ against:
| Division | Key Items | Material Cost | % of Materials |
|---|---|---|---|
| Structural Works | Cement, rebar, CHB, sand, gravel, formwork | ₱840,000 | 40% |
| Roofing Works | Purlins, metal roofing, gutters, flashing | ₱210,000 | 10% |
| Electrical Works | Wire, outlets, panels, fixtures, grounding | ₱189,000 | 9% |
| Plumbing & Sanitary | Pipes, fittings, fixtures, septic tank | ₱168,000 | 8% |
| Finishing Works | Tiles, paint, doors, windows, ceilings | ₱693,000 | 33% |
| Cost Category | Amount | % of Total |
|---|---|---|
| Total Materials | ₱2,100,000 | 60% |
| Total Labor | ₱1,050,000 | 30% |
| Overhead & Profit | ₱350,000 | 10% |
| Grand Total | ₱3,500,000 | 100% |
This translates to ₱35,000 per sqm for standard finish — consistent with 2026 national averages. Your actual costs will vary based on region, specific material choices, and site conditions. Metro Manila projects typically run 20-25% higher.
Check the exact cost for your city using our <a href="/cost/manila">Manila calculator</a> or browse the full <a href="/cost">city directory</a>. For the methodology behind these numbers, see our <a href="/methodology">data methodology page</a>.
Getting quotes from 3 or more contractors is essential. But comparing them is only useful if you do it systematically. Here are five steps for an effective side-by-side comparison:
Step 1: Normalize the Format: Put all BOQs into the same spreadsheet or table format with identical categories. If one contractor lists "Structural" and another lists "Concrete Works + Steel Works" separately, combine them so you're comparing the same scope.
Step 2: Compare Unit Prices Item by Item: Don't just compare totals — compare the unit price of each major material. Contractor A may have cheaper cement but more expensive tiles. The total might look similar, but one is giving you better value on the items that matter most.
Step 3: Check for Missing Items: The cheapest quote often wins by leaving things out. If one BOQ is ₱500,000 less than the others, check whether they've omitted items like the septic tank, perimeter walls, grading, or specific finish items. Missing items become change orders — and change orders are always more expensive than original pricing.
Step 4: Verify Quantities Are Consistent: All contractors are building the same house from the same plans. Cement, rebar, and CHB quantities should be within 10% of each other. If one contractor's cement quantity is 30% higher, they're either padding or the others are underestimating.
Step 5: Compare Labor Rates Separately: Labor should be itemized. Compare the labor cost for each division. If one contractor's labor is 40% higher than the others, ask why. Regional rates do vary, but not by that much for the same location.
Our <a href="/audit">Contractor Quote Audit tool</a> automates much of this comparison by checking each unit price against current market data. Enter your contractor's prices and see instantly which items are fairly priced and which are inflated.
Should I get my own BOQ before asking contractors for quotes? Yes, ideally. If you hire an architect or engineer to prepare your construction plans, ask them to also prepare an independent BOQ (sometimes called a Detailed Estimate or Owner's Estimate). This gives you a baseline to compare against contractor quotes. Without your own BOQ, you're relying entirely on the contractor's numbers. An architect-prepared BOQ typically costs ₱15,000-₱30,000 but can save you hundreds of thousands by catching overpriced items.
My contractor only gave a lump-sum quote. Should I accept it? No. A lump-sum quote without an itemized BOQ is a blank check. You have no way to verify whether material prices are fair, whether quantities are accurate, or whether the scope is complete. Insist on a detailed BOQ. If the contractor cannot or will not provide one, find a contractor who will. Any professional contractor can itemize their pricing — refusal to do so is a serious red flag.
How often should the BOQ be updated during construction? The BOQ should be updated whenever there are change orders (design changes, material substitutions, or scope additions). Material prices can shift during a long build — if your construction takes 8-12 months, cement or steel prices may change by 5-10%. Any changes should be documented as formal change orders signed by both parties, not verbal agreements.
What is the difference between a BOQ and an estimate? A BOQ (Bill of Quantities) is a detailed, item-by-item breakdown listing every material, quantity, unit, unit price, and total cost. An estimate is a higher-level projection — it might say "Structural Works: ₱800,000" without breaking it down further. A BOQ is always more reliable and more useful because it allows verification at the item level. Always insist on a BOQ, not just an estimate.
The BOQ is your roadmap and your protection. Learn to read it, verify every line, and use it to hold your contractor accountable. The few hours you spend reviewing the BOQ can save you hundreds of thousands of pesos.
Sample BOQ — See a complete 26-item Bill of Quantities with prices
Contractor Quote Audit — Check every unit price against market data
Construction Cost Calculator — Get a realistic baseline estimate
Cost Breakdown Analysis — See the standard division percentages
2026 Construction Cost Guide — Complete pricing reference