Ndarugo Stones Prices in Kenya 2026: Sizes, Lorry Prices & Machine Cut Stones
- BeyondForest
- Jan 12
- 7 min read
Updated: Aug 27
1.)About Ndarugo Stones
2.)Ndarugo Stones Prices in Kenya (2026 Updated)
3.)Ndarugo Stones Sizes and Dimensions
4.)How Many Ndarugo Stones Are in One Lorry
7.)Foundation Stones vs Walling Stones (Key Differences)
8.)Machine Cut Stones vs Manual Stones – Which Is Better?
10.)Factors affecting the Price of Ndarugo Stones in Kenya
11.)Best Places to Buy Ndarugo Stones in Kenya
13.)Frequently Asked Questions About Ndarugo Stones
TL;DR (Too Long Didn't Read)
Ndarugo machine-cut stones in Kenya cost roughly 35Ksh–120Ksh per piece in 2026, depending on stone size, quarry location, transport distance and delivery destination. Prices are generally lowest when buying close to quarry areas around Juja, Ruiru and Kiambu, while delivered prices increase for Nairobi and farther counties.
About Ndarugo Stones
Image of A yellow TATA truck unloads Ndarugo Machine cut stones on a construction site
Ndarugo stones are natural volcanic building stones commonly used in Kenya for walling and foundation works. They are quarried mainly in regions such as Kiambu, Thika, Murang’a, and parts of Machakos, where volcanic rock is abundant.
🚚 Quick Lorry Capacity Reminder
6×9 size: ~1,000 stones per lorry
9×9 size: ~700 stones per lorry
These stones are valued for their high compressive strength, durability, and resistance to weathering, making them ideal for residential and commercial construction.
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Zone | Areas Covered | Price Range (Per Piece) |
🟢 Zone 1: Near Quarry (Lowest Cost) | Juja, Ruiru, Kiambu, Banana | 38Ksh – 43Ksh |
🟡 Zone 2: Nairobi Metropolitan | Ruai, Malaa, Mwiki, Syokimau, Kikuyu, Wangige | 42Ksh – 46Ksh |
🟠 Zone 3: Outer Nairobi & Central Kenya | Kitengela, Ngong, Limuru, Nyeri, Murang’a, Machakos | 47Ksh – 55Ksh |
🔴 Zone 4: Far Counties (Highest Cost) | Nakuru, Naivasha, Nanyuki, Kisii, Nyamira, Awendo | 58Ksh – 80Ksh |
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Ndarugo stones are usually machine-cut into uniform sizes, which improves wall alignment, reduces mortar usage, and speeds up construction.
Quarry prices in Juja remain the lowest, with machine-cut 6×9 stones at KSh30 per piece and 9×9 stones at KSh 35 per piece. A standard lorry carries about 1,000 pieces (6×9) or 700 pieces (9×9).
Due to their strength and availability, ndarugo stones are among the most preferred building stones in Kenya for bungalows, maisonettes, and multi-storey buildings
Delivered prices rise based on location, ranging from KSh 38 per piece in Ruiru to KSh 80 per piece in parts of Western Kenya, making transport cost a key price driver.
Sample Ndarugo Stones Price List (6×9 Size – Delivered)
Pavoni Ndarugo Cutting machine slices Quarry block on a construction site. A worker operates the machine.
Location | Price per Piece (KSh) |
Ruiru | 40Ksh |
Kiambu | 45Ksh |
Banana | 48Ksh |
Utawala | 52Ksh |
Malaa | 49Ksh |
Kitengela | 47Ksh |
Ngong | 48Ksh |
Limuru | 50Ksh |
Nyeri | 60Ksh |
Nakuru | 70Ksh |
Ndarugo Stones Sizes and Dimensions
Ndarugo stones are commonly machine-cut into standard sizes to ensure uniformity, strength, and efficient construction. The most popular size in Kenya is 6×9 inches, which offers a good balance between strength and affordability, making it ideal for most residential houses. Another common size is 9×9 inches, which is heavier, stronger, and often used for load-bearing walls and foundations.
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ndarugo stone sizes reduces mortar consumption, improves wall alignment, and speeds up construction, ultimately lowering overall building costs.
How Many Ndarugo Stones Are in One Lorry
Overloading is avoided to comply with road regulations and prevent stone breakage. Always confirm stone size and lorry capacity before delivery to estimate your total construction cost accurately.
For machine-cut 6×9 inch ndarugo stones, a standard building materials lorry typically carries about 900 to 1,100 pieces, with 1,000 stones being the common average used by suppliers.
Larger 9×9 inch stones are heavier, so a lorry usually carries around 650 to 750 pieces, averaging about 700 stones per trip.
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How Many Ndarugo Stones Can Build a 2 Bedroom House
Bigger windows reduce stone count, while extra rooms, corridors, or a separate dining area increase it.
A typical 2-bedroom house in Kenya will use about 1,800 to 2,000 pieces of 6×9 machine-cut ndarugo stones for walling (excluding the foundation, depending on the design). The exact number changes based on the house layout, wall height (usually 9–10 ft), whether it’s a bungalow or maisonette, and if there are many internal partition walls.
To avoid delays, many builders add a 5–10% allowance for cuts, wastage, and future extensions.
How Many Ndarugo Stones Are Needed for a 3 Bedroom House?
A standard 3-bedroom house in Kenya typically requires 2,500 to 2,700 pieces of 6×9 machine-cut ndarugo stones for walling only.Bungalows usually use slightly fewer stones than maisonettes. Builders often add a 5–10% buffer to cater for cutting, breakages, and minor design changes during construction.
Foundation Stones vs Walling Stones (Key Differences)
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Foundation stones and walling stones serve different structural purposes in building construction. Foundation stones are usually larger, heavier, and stronger, designed to carry the load of the entire structure and distribute weight evenly to the ground. They are often less uniform in shape but have higher compressive strength. Walling stones, such as 6×9 inch ndarugo stones, are machine-cut to uniform sizes for neat walls, faster construction, and reduced mortar use.
Using walling stones in foundations can weaken the structure, while proper foundation stones improve stability, durability, and long-term safety of the building.
Machine Cut Stones vs Manual Stones – Which Is Better?
Machine-cut stones are uniform in size, build straighter walls, and use less mortar, making construction faster and more cost-effective in the long run. Manual stones are cheaper upfront but irregular, leading to higher mortar use and slower work. Overall, machine-cut stones are better for strength, speed, and quality construction.
Cost of Building a House Using Ndarugo Stones
The cost of building a house using ndarugo stones depends on house size, stone price, transport distance, and design. On average, walling stones alone for a 3-bedroom house may cost KSh 95,000–160,000, excluding foundation stones, sand, cement, labour, and finishes.
Factors affecting the Price of Ndarugo Stones in Kenya
The price of ndarugo stones in Kenya is mainly influenced by distance from the quarry, transport and fuel costs, and stone size.
Other factors include
demand season
road conditions
lorry capacity,
stones are bought directly from the quarry or through suppliers.
Best Places to Buy Ndarugo Stones in Kenya
Areas like Juja, Ruiru, Kiambu, Banana, and Limuru offer direct quarry access. You can also source stones from building material suppliers in Nairobi, Ongata Rongai, Kitengela, and Machakos, who deliver to nearby counties. Buying directly from quarries often gives you better prices, while local suppliers save on transport and logistics
⚠ Prices change weekly due to fuel costs.
Confirm availability before ordering.
Common Mistakes to Avoid When Buying Ndarugo Stones
A common mistake is focusing only on price and ignoring stone size, quality, and transport cost. Other errors include ordering the wrong stone size, underestimating quantities, and not confirming lorry capacity. Failing to inspect stones before delivery or buying from unverified suppliers can also lead to losses and construction delays.
Frequently Asked Questions About Ndarugo Stones
Ndarugo stones are natural volcanic building stones commonly used in Kenya for walling and foundations. They are strong, durable, and usually machine-cut to uniform sizes, making construction faster and neater.
How much do ndarugo stones cost in Kenya?
Prices vary by location, size, and transport distance. On average: Per stone: 25Ksh – 40Ksh while Per lorry (7–10 tons): 25,000Ksh – 45,000Ksh. Quarry prices are cheaper than delivered prices.
How many ndarugo stones are in one lorry?
A standard lorry carries 1,800 – 2,500 machine-cut stones, depending on stone size and truck capacity.
Person in green shirt and blue pants laying bricks along a trench from Ndarugo Quarry
How many ndarugo stones can build a 2 bedroom house?
A typical 2-bedroom house requires 1,800 – 2,200 stones, depending on House design, Wall height and Stone size
How many ndarugo stones are needed for a 3 bedroom house?
Most 3-bedroom houses in Kenya need 2,400 – 3,000 stones for walling only. Bungalows usually need fewer stones than maisonettes.
A 5 Bedroom Mansionate
Are ndarugo stones good for foundations?
Yes. Ndarugo stones are very strong and suitable for foundations, especially in stable soils. However, larger foundation stones are often preferred for load-bearing sections.
What sizes do ndarugo stones come in?
Common sizes include 4×9 inches 6×9 inches (most popular) 9×9 inches while Larger stones cost more but reduce the number of stones needed.
What is the difference between machine-cut and manual stones?
Machine-cut stones are Uniform, stronger walls, less mortar, faster construction while Manual stones: Irregular sizes, higher mortar use, cheaper upfront but costly long-term. Machine-cut ndarugo stones are generally recommended.
Which is cheaper: buying from the quarry or a supplier?
Buying directly from the quarry is cheaper, but suppliers save you time and logistics. Delivered stones cost more due to transport and handling.
What affects the price of Ndarugo stones?
Key factors include Quarry location, Transport distance, Fuel prices, Stone size and Demand season
Are Ndarugo stones better than other building stones?
Yes, for most residential projects. They offer High strength, Good durability and Better mortar efficiency. They are among the best walling stones in Kenya.
Can Ndarugo stones crack after construction?
Cracking usually results from poor foundation work, weak mortar mix, or structural issues, not the stones themselves.
Do I need special mortar for Ndarugo stones?
No special mortar is required. A standard cement and sand mix (1:4 or 1:5) is commonly used, depending on structural requirements.
Can Ndarugo stones be used for multi-storey buildings?
Yes. When combined with proper structural design and reinforcement, Ndarugo stones are suitable for multi-storey construction.
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