What is a BOQ in Home Construction — And Why You Must Demand One Before Signing Anything

Three letters separate homeowners who build stress-free from those who get cheated: BOQ. A Bill of Quantities is the single most important document in home construction — yet most builders in Chennai and Coimbatore don't provide one. Here's what it is, why it matters, and how to use it.

What is a BOQ (Bill of Quantities)?

A BOQ is a detailed, itemised list of every material and labour component in your home construction project — with quantities, units of measurement, rates per unit, and total cost for each item.

Think of it as the construction equivalent of a restaurant menu with prices — except instead of dishes, it lists every brick, bag of cement, kg of steel, sqft of tile, point of electrical wiring, and hour of skilled labour.

What a Good BOQ Includes

1. Substructure (Foundation) — excavation, PCC, RCC foundation, anti-termite treatment
2. Superstructure — columns, beams, slabs, staircase — with steel and concrete quantities
3. Masonry — brick/block type, mortar specification, wall thickness
4. Plastering — internal and external, thickness, finish type
5. Waterproofing — roof, bathrooms, sunken slabs — product brand specified
6. Flooring — tile size, brand, grade — separately for each room type
7. Doors & Windows — frame material (wood, UPVC, aluminium), size, quantity
8. Plumbing — pipe material, diameter, brand of sanitary ware, fittings
9. Electrical — wire brand, number of points, switch brand, panel specifications
10. Painting — primer + 2 coats, product brand, interior vs exterior
11. Miscellaneous — overhead tank, sump, borewell, compound wall

How to Read a BOQ — What to Check

Check Steel Quantity

A standard 1,200 sqft ground floor home needs approximately 6–8 MT of steel. If the BOQ shows 3 MT, the structure will be under-reinforced. Always verify steel quantity with your structural engineer.

Check Material Brands

BOQ should name specific brands — not just "good quality tiles" but "Kajaria 800×800 vitrified, Grade AA". Unspecified brands allow substitution with cheaper material after signing.

Check Labour vs Material Split

A healthy split is roughly 60% material, 40% labour for a residential project. If labour is quoted suspiciously low, corners are being cut on skilled trades (plumbing, electrical).

Check Payment Schedule

The BOQ should align with the payment schedule. You should only pay for what's physically complete on-site — not what's planned.

Red Flags in a Builder's Quote

The Kanish Homes BOQ Commitment

At Kanish Homes, every client receives a detailed BOQ before signing any contract. It includes:

• Itemised breakdown of every construction component
• Specific material brands and grades locked in
• Stage-wise payment schedule tied to construction milestones
• Variation clause — clearly defining what triggers cost changes and at what rate

In 150+ home deliveries across Chennai and Coimbatore, we have never had a final bill exceed the BOQ by more than 3% — and that only due to client-requested additions after signing.

5 Questions to Ask Your Builder Before Signing

1. Can I get a complete BOQ with material brands specified before signing?
2. What grade of steel and cement are you using?
3. Is the payment schedule tied to construction stages or to a timeline?
4. Who bears cost if steel or cement prices increase mid-project?
5. Are approvals, EB connection, and water connection included in the quoted price?

A builder who hesitates on any of these questions is a builder to avoid. A builder who answers all five clearly, in writing, in a BOQ — is a builder worth trusting with your life's biggest investment.