Why You Need a Bill of Quantities Before You Start Building in Nigeria

Here is the most expensive sentence in Nigerian construction: “The contractor gave me a good price.”

How do you know it is a good price? On what quantities was it based? What happens when the contractor runs out of blocks and asks for another ₦2 million, did the original quote even include enough?

A Bill of Quantities (BoQ) answers all of that before a single naira moves.

What Is a Bill of Quantities?

A BoQ is a professional, itemised schedule of every material and labour component of your building, prepared by a quantity surveyor from your approved drawings. It lists:

• Every item of work: excavation, foundation, blockwork, roofing, finishing, electrical, plumbing
• The quantity of each item, measured from the drawings
• The unit price and total for each item
• Provisional sums for items that cannot be measured yet

Your building, translated into numbers a contractor cannot inflate.

What Building Without a BoQ Costs You

• Inflated quotes, a contractor quoting “per project” has no obligation to break down costs; padding is invisible
• Quantity fraud, contractors who control quantities order cement for one room and bill for two
• Mid-project surprises. “the foundation took more material than we thought” is a budget killer without a measurement baseline
• Disputes, without a BoQ, you cannot prove what was agreed, and payment arguments end in arbitration or lawyers
• Bank rejection, banks financing construction expect a BoQ to assess the loan

The Rule of Thumb That Saves Millions

Professional fees, including quantity surveying, typically run 4 to 6% of project value. Unmanaged overruns on Nigerian self-build projects routinely run 40 to 60%. The BoQ is the cheapest insurance in the entire construction process.

How a BoQ Works for You

1. Before hiring a contractor: invite quotes against the BoQ. Compare like-for-like, not apples and oranges.
2. Before signing: make the BoQ the contract document. Fixed quantities, agreed rates.
3. During construction: pay by measured milestones, stage payments tied to verified progress, not “requests”.
4. At handover: reconcile what was paid against what was delivered.

BoQ for Diaspora Builders

If you are building from abroad, a BoQ is your eyes on the numbers. Your contractor works against measured quantities, your project manager verifies progress against the schedule, and you release funds based on reports, not phone calls. This is the single most effective anti-fraud tool for remote construction in Nigeria.

Get Your BoQ Done Right

VETONGROUP quantity surveyors prepare Bills of Quantities, tender documents and milestone payment schedules for projects in Edo State, Lagos, Abuja and nationwide, fixed price, clear timeline, delivered through your client portal.

Book a free consultation, response within 24 business hours.