Estimate construction cost for your building project. Select rooms, finish quality, and African city - get a full cost breakdown with timeline estimate.
Add rooms to calculate total floor area. Default sizes are suggestions - adjust as needed.
Timelines assume normal weather conditions and continuous work. Rainy season, material shortages, and funding gaps typically add 30-50% to these estimates in practice.
Building costs vary enormously across African cities, driven by material prices, labour rates, land regulations, and finish quality. In Lagos, a standard-quality 3-bedroom bungalow costs approximately ₦25-45 million (2024 prices). In Nairobi, a similar build runs KSh 5-10 million. In Johannesburg, expect R800,000-1.5 million. This estimator gives you a realistic baseline for budgeting your project.
The construction industry prices buildings by cost per square metre of gross floor area. Economy finishes (basic tiles, simple paint, standard fixtures) cost significantly less than premium or luxury finishes (imported tiles, designer fittings, smart home systems). The cost per m2 also varies by building type - bungalows are cheaper per m2 than duplexes because duplexes require structural columns, suspended slabs, and staircases.
This estimate covers measured building works, then adds explicit allowances for preliminaries, external works, professional fees, contingency and price escalation. The allowance controls are visible because an early budget, a measured design and a contractor quote should not pretend to carry the same confidence. It does not include land purchase, demolition of existing structures, statutory approvals, finance charges, loose furniture or appliances.
The biggest mistake is underestimating finishes - tiling, painting, kitchen fittings, and bathroom fixtures often cost more than the structural work. Another common error is forgetting professional fees, external works, preliminaries and price escalation. Use a higher contingency for concept budgets, risky soil, remote access or delayed procurement.
Get a proper BOQ before construction starts - this prevents disputes and cost overruns. Buy materials in bulk where possible. Use local materials (sandcrete blocks, local timber) instead of imported alternatives. Phase your construction if budget is tight - complete the structure and roof first, then finish rooms gradually. Monitor material deliveries and keep daily site records.
This calculator is not a quantity surveyor's BOQ. It follows the useful discipline from RICS NRM and cost prediction guidance: state the measurement basis, show allowances separately, identify contingency, and make the estimate stage visible.