Building Material Cost Trends in the recent past

Construction costs in Kenya for the 2025–2026 period are defined by a shift toward more moderate, yet sustained, annual growth driven by urbanization, affordable housing mandates, and stabilizing macroeconomic indicators. The construction market is projected to reach a value of KES 1.02 trillion by the end of 2026, representing a 7.5% annual increase following a period of more aggressive expansion between 2021 and 2025.

General Cost Trends and Inflation

Average building costs in Kenya for 2025 range between KES 40,000 and KES 75,000 per square metre, depending on the building type, location, and finishes.

• Low-cost residential housing: KES 40,000 – 50,000 per m².
• Middle-class homes: KES 55,000 – 65,000 per m².
• High-end residential housing: KES 70,000 – 90,000 per m².
• Commercial office blocks: KES 70,000 – 100,000 per m².

Construction inflation showed a marked deceleration throughout 2025; the annual construction inflation rate was reported at 0.18% in Q1 2025, rising slightly to 0.62% by Q4 2025. This cooling trend followed a more aggressive inflationary period in 2024.

Detailed Material Price Movements (2025–2026)

Materials typically account for 50% to 60% of total project costs in Kenya.

• Cement: In 2025, retail prices for a 50kg bag generally ranged from KES 650 to KES 850. While the cement index fluctuated during 2025, a new wave of price hikes appeared in early 2026, with the East Africa Portland Cement Company raising ex-factory prices for Blue Triangle cement by 1.39% in March 2026 due to soaring raw material costs.
• Steel Reinforcement: Steel remains highly volatile. In 2025, prices for steel reinforcement bars (rebars) were between KES 95,000 and KES 120,000 per ton. Specific 2025 piece rates include D8 bars at KES 450–700 and D25 bars at KES 4,400–4,600.
• Timber and Wood: This category saw a general decline in indices toward the end of 2025, dropping by 2.71% in Q3 and another 1.63% in Q4. Common 2025 prices for Cypress (2×2) ranged from KES 25 to KES 35 per foot.
• Other Materials: Roofing sheets (gauge 30) are priced between KES 600 and KES 1,200 per metre. Standard 6×9 machine-cut stones sell for approximately KES 20 to KES 30 per piece.

Regional Variations

A significant “Nairobi premium” exists, driven by high land prices and demand for premium materials.

• Nairobi: Average costs range from KES 60,000 to KES 90,000 per m².
• Coast Region: Average costs are between KES 55,000 and KES 80,000 per m².
• Western & Nyanza Regions: These regions saw strong price movements in 2025, with standard bungalow rates averaging KES 57,080 per m².
• Rural Areas: Costs are lower, ranging from KES 40,000 to KES 55,000 per m² due to more affordable labor.

Macroeconomic Drivers

The relative stability of construction costs in 2025 and early 2026 is attributed to a more predictable supply chain and the stabilization of the Kenyan Shilling against the US Dollar, which anchored around KES 129 in early 2026. Furthermore, the Central Bank of Kenya entered an easing cycle, reducing the Central Bank Rate (CBR) from 12.5% in late 2023 to 8.75% by April 2026, intended to stimulate private sector lending for construction projects.

Future Forecast

Experts project a steady 5–8% annual rise in construction costs beyond 2025. The market is expected to continue growing at a Compound Annual Growth Rate (CAGR) of 6.4% from 2026 to 2030, reaching an estimated value of KES 1.41 trillion by the end of the decade. Emerging opportunities in this period include green building solutions and prefabricated construction, which can reduce costs and timelines by up to 30%.