Cost Guide
How much does quantity surveying cost in Nigeria?
QS fees, BOQ costs, and why hiring a quantity surveyor before you build is one of the best money decisions you can make. Let’s start with the most important part: the numbers. What you will likely pay: Bill of Quantities (BOQ) for 3-bed bungalow: ₦80,000 – ₦200,000 BOQ for duplex or 4-bedroom house: ₦150,000 – ₦350,000 Full project QS services (small residential): ₦200,000 – ₦600,000 Percentage-based fee (industry guideline): 1.5% – 3.5% of project construction cost Cost monitoring during construction (per visit): ₦20,000 – ₦60,000
Of all the professional services involved in building a house in Nigeria, quantity surveying is the one most consistently skipped — and the one that most consistently saves money when it is engaged. A Bill of Quantities (BOQ) prepared by a qualified QS before construction begins tells you exactly what materials you need, in what quantities, and at what realistic market price. Without one, you are negotiating blindly with contractors who naturally hold far more market information than you do.
What a Quantity Surveyor Does
A quantity surveyor (QS) is a construction cost specialist. They translate architectural and engineering drawings into precise, legal lists of materials, labour requirements, and costs. The core deliverable is the Bill of Quantities (BOQ) — a structured document that itemises every element of the building project with accurate quantities and realistic unit rates.Beyond creating the BOQ, a QS acts as your financial guardian during construction by evaluating work completed, assessing contractor claims, and flagging potential overspending before it turns into a budget crisis.
1. Comprehensive quantity survey fee breakdown 2026
| Scope / Project Type | Low Fee | High Fee | Notes / Context |
|---|---|---|---|
| BOQ only — 2-3 bedroom bungalow | ₦80,000 | ₦200,000 | One-off document, no site visits |
| BOQ only — duplex or larger | ₦150,000 | ₦350,000 | More complex architectural scope |
| BOQ + pre-contract services | ₦200,000 | ₦450,00 | Includes tendering and contractor evaluation support |
| Full QS service (design to completion) | ₦300,000 | ₦800,000 | BOQ + regular monthly cost monitoring |
| Percentage-based (small residential) | 1.5% | 2.5% | Of the total estimated construction cost |
| Percentage-based (commercial) | 1.0% | 2.0% | Lower percentage scaling on larger projects |
| Interim valuation (per visit) | ₦20,000 | ₦60,000 | Monthly site valuations for progress payments |
| Dispute resolution/claims advice | ₦50,000 | ₦200,000 | Per engagement / structured review |
2. Why the BOQ is worth more than the fee
• Like-for-Like Comparison: A BOQ lets you compare contractor quotes objectively on an identical basis. Without it, two quotes for the same job can easily differ by up to 40% because they are based on wildly different material assumptions and hidden project scopes.
• Early Budget Discovery: A BOQ reveals the true legal cost of the project before you commit. It is far better to discover your budget is short on paper than six months deep into active construction.
• Honest Pricing: Contractors who know the client has engaged a professional QS tend to price work more honestly. The QS's expertise effectively removes the information asymmetry that often inflates contractor quotes.
• Accurate Milestones: During construction, monthly QS valuations ensure you are paying only for work actually completed on-site — not what the contractor claims is done.
3, NIQS registrations — why it matters
In Nigeria, quantity surveying is a strictly regulated profession. A qualified professional must be duly registered with the Nigerian Institute of Quantity Surveyors (NIQS) and hold a current, valid practising certificate. Always demand to see these credentials before engaging anyone to prepare your BOQ — an unqualified estimate dressed up as a BOQ is entirely unreliable and won't protect your capital.
4. Frequently asked questions FAQ
How much does a quantity surveyor cost in Nigeria in 2026?
A Bill of Quantities for a 3-bedroom residential project costs between ₦80,000 and ₦200,000 from a qualified QS in Nigeria in 2026. Full project QS services — covering BOQ, tendering, and construction cost monitoring — range from ₦300,000 to ₦800,000 for small residential projects. Percentage-based fees typically run from 1.5 to 2.5% of the construction cost for residential work.
What is the difference between a BOQ and a building estimate?
A Bill of Quantities (BOQ) is a precisely measured, itemised document prepared from architectural and engineering drawings by a qualified quantity surveyor. It lists every material, its quantity, unit rate, and total cost. A building estimate is a general approximation — useful for early budgeting but not precise enough for contractor tendering or cost control. A BOQ is the document you need to compare contractor quotes fairly.
Is a quantity surveyor necessary for a residential building project in Nigeria?
Not legally required, but strongly recommended for any project above ₦5,000,000. The BOQ pays for itself by enabling fair contractor comparison, revealing budget gaps early, and providing cost control during construction. Property owners who skip QS services are the most frequent victims of contractor overcharging and budget overruns in Nigerian residential construction.
Can a quantity surveyor help if my building project is already over budget?
Yes. A QS can audit work completed against money spent, identify where overspending has occurred, reassess remaining scope against available budget, and renegotiate contractor rates where overcharging has taken place. This forensic cost review is one of the most valuable services a QS provides — and it is available at any stage of a project
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