Introduction: Why I Wrote This After Building My Own House
Two years ago, I decided to build my own 3‑bedroom bungalow in Ogun State. I thought I had budgeted well – ₦12 million for everything. By the time I finished, I had spent over ₦18 million. I’m not alone. Many Nigerians start building with a rough estimate, only to run out of money halfway and leave the project abandoned. That’s why I’ve put together this detailed, real‑world cost breakdown. Whether you’re building in Lagos, Abeokuta, or Enugu, this guide will help you plan realistically and avoid painful surprises.
Step 1: Land Acquisition – The Foundation of Your Budget
Before you even think about blocks and cement, you need land. Prices vary wildly based on location. In a developing area like Mowe, Ogun State (about 30 minutes from Lagos), a 600 sqm plot currently sells for ₦3 million to ₦6 million. In a more urban area like Magodo Phase 2, Lagos, the same size plot can cost ₦30 million or more. For this breakdown, I’ll assume you already own the land or you’re buying in a semi‑urban area at ₦5 million. If you haven’t bought yet, remember to add legal fees (5‑10%) and survey costs (₦100,000 – ₦250,000).
Cost so far: ₦5,000,000 (land) + ₦400,000 (fees) = ₦5.4 million.
Step 2: Architectural Design and Approvals – Don’t Skip This
I know people who start building without drawings, and it always ends in disaster. A proper architectural design (including structural, electrical, and mechanical plans) costs between ₦200,000 and ₦600,000 for a 3‑bedroom bungalow. Also, you need building plan approval from your local government or state ministry – typically ₦50,000 to ₦150,000 depending on the area. Skipping approval can lead to demolition or fines later.
Cost so far: + ₦400,000 = ₦5.8 million.
Step 3: Site Clearing and Excavation
This includes clearing bushes, removing rubbish, and digging the foundation trenches. If your land is flat and accessible, you can hire labourers for about ₦100,000 to ₦200,000. If the land is swampy or rocky, you may need a backhoe – that will cost ₦250,000 to ₦500,000. For this example, let’s take ₦300,000.
Cost so far: + ₦300,000 = ₦6.1 million.
Step 4: Foundation and Block Work – The Real Money Spender
This is where you’ll spend the most. Let’s break down materials for a standard 3‑bedroom bungalow (about 120 sqm floor area).
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Concrete for foundation: 20 tonnes of granite (₦70,000/tonne = ₦1.4M), 15 tonnes of sharp sand (₦50,000/tonne = ₦750k), 500 bags of cement (₦5,500/bag = ₦2.75M). Total: ₦4.9M (just for concrete!).
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Blocks: You’ll need approximately 3,500 6‑inch blocks. At ₦350/block, that’s ₦1.225M.
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Reinforcement (iron rods): 2 tonnes of 12mm and 16mm rods – about ₦1.2M.
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Labour for block laying and concrete: ₦800,000 to ₦1.2M.
Let’s sum: ₦4.9M (concrete) + ₦1.225M (blocks) + ₦1.2M (rods) + ₦1M (labour) = ₦8.325M. This is higher than many people expect. If you want to save, you can use a raft foundation instead of deep trenches, but in swampy areas, you have no choice.
Cost so far: + ₦8.3M = ₦14.4 million.
Step 5: Lintel and Roofing
After the walls reach lintel level (about 1.2m high), you pour a concrete ring beam. That uses more cement, rods, and wood. Count around ₦1.5M for materials and labour. Then roofing: for a 120 sqm bungalow with aluminium long span sheets, you’ll need:
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Wood for rafters and purlins: ₦800k – ₦1.2M.
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Roofing sheets (0.55mm gauge): ₦4,500 per sheet × about 120 sheets = ₦540k.
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Labour: ₦300k – ₦500k.
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Total roofing: ~ ₦2.2M.
Cost so far: + ₦1.5M (lintel) + ₦2.2M (roof) = ₦18.1 million.
Step 6: Windows, Doors, and External Plastering
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Windows: 10 casement windows (aluminium with burglar proofing) – about ₦70k each = ₦700k.
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Doors: Main entrance (solid wood or steel) – ₦150k; 4 internal doors – ₦50k each = ₦200k; total doors ₦350k.
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External plastering (mortar and labour): ₦500k – ₦800k.
Cost so far: + ₦700k + ₦350k + ₦650k = ₦19.8 million.
Step 7: Internal Finishes – Tiling, Painting, Plumbing, Electrical
Here’s where you can really control costs by choosing cheaper finishes.
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Floor and wall tiles: For 3 bedrooms, living/dining, kitchen, and two bathrooms – average cost of tiles plus labour: ₦1.5M – ₦2.5M. If you use Chinese tiles, you can stay at ₦1.5M.
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Painting: Quality emulsion for walls and gloss for trims – ₦300k (labour inclusive).
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Plumbing: PVC pipes, fittings, water heater (optional), labour – ₦800k – ₦1.2M.
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Electrical: Wires, sockets, consumer unit, lighting – ₦700k – ₦1M.
Let’s take middle figures: ₦2M (tiles) + ₦300k (paint) + ₦1M (plumbing) + ₦800k (electrical) = ₦4.1M.
Cost so far: + ₦4.1M = ₦23.9 million.
Step 8: Kitchen, Bathroom Fittings, and Wardrobes
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Kitchen cabinets: Simple fitted cabinets – ₦500k to ₦1M.
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Bathroom fittings (toilets, sinks, showers): ₦400k for two bathrooms.
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Built‑in wardrobes in bedrooms: ₦300k each × 3 = ₦900k.
Cost so far: + ₦1.8M = ₦25.7 million.
Step 9: External Works – Fence, Gate, Soakaway
You can’t live in a house without a fence. A simple block fence (3ft high) around a 600 sqm plot costs about ₦1.5M – ₦2.5M. Add a gate (₦200k) and a soakaway/ septic tank (₦500k – ₦800k).
Cost so far: + ₦2.5M (fence) + ₦200k (gate) + ₦700k (soakaway) = ₦29.1 million.
Step 10: Contingency (10–15%) – Because Something Always Goes Wrong
Even with the best planning, you will face unexpected costs: a sudden cement price hike, extra labour because of rain, a cracked slab that needs redoing. Add at least 10%. On ₦29M, that’s ₦2.9M.
Final estimated total: ₦32 million.
How to Reduce Costs Without Sacrificing Quality
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Phase your building: Do foundation one year, walls the next. This gives you time to save.
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Buy materials directly from distributors (not from site vendors). A bag of cement from a distributor is ₦5,000 vs ₦5,500 on site.
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Build during dry season (November to March) to avoid rain delays that increase labour costs.
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Use alternative blocks like Interlocking Stabilised Soil Blocks (ISSB) – they cost less and require less cement.
Conclusion
Building a 3‑bedroom bungalow in Nigeria today will likely cost you between ₦25 million and ₦40 million, depending on location and finish. My own house hit ₦32 million. I wish I had used a proper cost breakdown from the start – it would have saved me from borrowing at the last minute. Before you lay the first block, use the TNJC Homes property profit calculator (link below) to run a full investment analysis. And always keep a contingency fund. Happy building.
Links:
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TNJC Homes Property Profit Calculator – estimate your build ROI
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Building Material Price Index (Nigerian Bureau of Statistics) – to track cement and steel prices