Steel is one of the most expensive materials in any construction project in Kenya, typically accounting for 15-20% of your total build cost. This guide covers current steel prices in Nairobi so you can budget accurately and find the best deals from verified suppliers.
Reinforcement Steel (Rebar) Prices
Reinforcement bars (rebar) are used in foundations, columns, beams, and slabs. They come in different diameters (sizes) measured in millimeters.
| Size (mm) | Length | Price Range (KSh) | Common Use |
|---|---|---|---|
| 8mm (Y8) | 12m | KSh 350 – 450 | Stirrups, links, light slabs |
| 10mm (Y10) | 12m | KSh 520 – 650 | Slabs, minor beams |
| 12mm (Y12) | 12m | KSh 720 – 900 | Slabs, beams, columns |
| 16mm (Y16) | 12m | KSh 1,200 – 1,500 | Columns, heavy beams |
| 20mm (Y20) | 12m | KSh 1,900 – 2,300 | Heavy columns, foundations |
| 25mm (Y25) | 12m | KSh 2,800 – 3,500 | Large structures, foundations |
Tip: Buy steel per tonne for large projects — you get better rates. A tonne of Y12 typically costs KSh 95,000 – 115,000 (approximately 85-90 bars).
BRC Mesh Prices
BRC (British Reinforced Concrete) mesh is pre-welded reinforcement used in slabs, driveways, and floor screeds. Much faster to install than tying individual bars.
| Type | Sheet Size | Price (KSh) |
|---|---|---|
| A142 (light) | 2.4m x 4.8m | KSh 2,500 – 3,200 |
| A193 (medium) | 2.4m x 4.8m | KSh 3,500 – 4,500 |
| A252 (heavy) | 2.4m x 4.8m | KSh 5,000 – 6,500 |
Roofing Steel Prices
Steel roofing sheets are the most popular roofing material in Kenya. Prices vary by gauge (thickness) and profile.
| Type | Gauge | Price per Foot (KSh) |
|---|---|---|
| Box Profile (GI) | 30 gauge | KSh 85 – 110 |
| Box Profile (GI) | 28 gauge | KSh 110 – 140 |
| Tile Profile (Versatile) | 28 gauge | KSh 140 – 180 |
| Colour Coated | 28 gauge | KSh 150 – 200 |
How Much Steel Do You Need for a House?
Here's a rough guide for steel requirements for a standard 3-bedroom bungalow (approximately 1,200–1,500 sqft):
- Foundation: 1.5 – 2 tonnes of rebar (Y12 and Y16)
- Columns & beams: 1 – 1.5 tonnes (Y12, Y16, Y8 for links)
- Roof slab (if flat): 1 – 1.5 tonnes (Y12, BRC mesh)
- Ring beam: 0.3 – 0.5 tonnes (Y12, Y8 links)
- Total estimate: 3.5 – 5.5 tonnes (~KSh 350,000 – 600,000)
Steel Buying Tips for Kenya
- Buy per tonne — individual bar prices are always higher than bulk rates
- Check the weight — some suppliers sell underweight bars. A Y12 (12m) should weigh about 10.7kg
- Buy from verified dealers — counterfeit steel is a real problem in Kenya. Buy from authorized distributors
- Compare delivery costs — steel is heavy and delivery can add KSh 3,000–8,000 depending on distance
- Time your purchase — steel prices fluctuate. Prices tend to rise during peak construction season (January–March)
- Get your structural engineer's bar schedule — this tells you exactly what sizes and quantities you need, avoiding waste
Top Steel Brands in Kenya
- Devki Steel (Simba brand) — largest manufacturer, widely available
- Tononoka Steel — established brand, good for structural steel
- Steel Structures Ltd — specializes in structural steel
- Insteel (Mabati Rolling Mills) — popular for roofing and light structural
Looking for steel suppliers in Nairobi?
Compare verified steel suppliers, check prices, and request free quotes on JengaHub.
Browse Steel SuppliersFrequently Asked Questions
What is the current price of a tonne of steel in Nairobi?
As of March 2026, a tonne of reinforcement steel (rebar) costs between KSh 95,000 and KSh 120,000 in Nairobi, depending on the size and supplier.
Where can I buy steel in Nairobi?
Major steel dealers are concentrated in the Industrial Area, Gikomba, and along Mombasa Road. You can also find suppliers in Kamukunji and various hardware shops across Nairobi. Use JengaHub to find verified steel suppliers near you.
How do I know if steel is genuine?
Check for the manufacturer's brand mark stamped on the bars (e.g., "SIMBA", "TONONOKA"). Verify the weight matches the standard. Buy from authorized dealers and always ask for a delivery note or receipt from the manufacturer.