Cost of constructing Greenhouses in kenya

Greenhouse farming tends to be profitable as farmers can do a wide range of fast-maturing, high-value crops.

Crops such a tomato, colored capsicums(pepper) and herbs for export are the most preferred crops for greenhouse farming.

These crops attract premium market prices and yield more in a small space, therefore giving farmers quicker returns.

Greenhouse costs vary in size and material. They are either wooden or metallic and vary in size-small (8x15m), medium (8x24m) and large (16x30m or 16x45m).

Understanding the specific material costs for different greenhouse types (wooden, metallic, polycarbonate) and sizes (small, medium, large) is critical for budgeting and planning.

This guide provides a detailed breakdown of all materials used, their costs, and considerations for small (8x15m), medium (8x24m or 10x30m), and large (16x30m or 16x45m) greenhouses in 2025.

Material Costs by Greenhouse Type and Size

Costs are inclusive of materials, but clients are typically responsible for providing sand, ballast, water connection, labour, and transport unless specified.

These prices may vary with location ,quality and different supplier. They represent a rough estimate that will guide you while budgettting.

Wooden Greenhouses

Wooden greenhouses are cost-effective, ideal for beginners, with a lifespan of 3–8 years with proper maintenance (e.g., treatment with light organic solvent preservative or used motor oil).

Cost of greenhouse in Kenya
Wooden Greenhouse

Small Wooden Greenhouse (8x15m, 120 m²)

  1. Frame Materials:
    • Wooden poles/timber (treated with LOSP or motor oil): KES 50,000–70,000.
    • Nails, screws, and connectors: KES 2,000–5,000.
  2. Covering Materials:
    • Greenhouse polythene (200 microns, UV-treated, yellow or clear): KES 13,200 (120 m² × KES 110/m²).
    • Profiles and wires (to secure polythene): KES 5,000–8,000.
  3. Ventilation and Pest Control:
    • High-density insect nets (for ventilation points): KES 6,000–9,000 (60 m² × KES 100–150/m²).
    • Shade nets (optional for seedling propagation): KES 3,000–5,000.
  4. Irrigation System:
    • Drip irrigation kit (15–30 cm spacing for tomatoes/cucumbers): KES 20,000–30,000.
    • 1,000L water tank: KES 8,000–12,000.
  5. Other Materials:
    • Greenhouse door (wooden): KES 5,000–8,000.
    • Mulching paper (to prevent weeds): KES 3,000–5,000.
    • Seedling trays (50–288 cells): KES 2,000–4,000 (20 trays × KES 100–200)
  6. Total Material Cost: KES 114,200–156,000.

Medium Wooden Greenhouse (8x24m, 192 m²)

  1. Frame Materials:
    • Wooden poles/timber (treated): KES 80,000–100,000.
    • Nails, screws, and connectors: KES 3,000–7,000.
  2. Covering Materials:
    • Greenhouse polythene (200 microns, UV-treated): KES 21,120 (192 m² × KES 110/m²).
    • Profiles and wires: KES 8,000–12,000.
  3. Ventilation and Pest Control:
    • Insect nets: KES 9,600–14,400 (96 m² × KES 100–150/m²).
    • Shade nets (optional): KES 5,000–8,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 30,000–50,000.
    • 1,000L water tank: KES 8,000–12,000.
  5. Other Materials:
    • Greenhouse door (wooden): KES 5,000–8,000.
    • Mulching paper: KES 5,000–7,000.
    • Seedling trays: KES 3,000–6,000 (30 trays × KES 100–200).
  6. Total Material Cost: KES 174,720–224,400.

Large Wooden Greenhouse (16x30m, 480 m²)

  1. Frame Materials:
    • Wooden poles/timber (treated): KES 150,000–200,000.
    • Nails, screws, and connectors: KES 5,000–10,000.
  2. Covering Materials:
    • Greenhouse polythene (200 microns, UV-treated): KES 52,800 (480 m² × KES 110/m²).
    • Profiles and wires: KES 15,000–20,000.
  3. Ventilation and Pest Control:
    • Insect nets: KES 24,000–36,000 (240 m² × KES 100–150/m²).
    • Shade nets (optional): KES 10,000–15,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 50,000–80,000.
    • 2,000L water tank: KES 15,000–20,000.
  5. Other Materials:
    • Greenhouse door (wooden): KES 8,000–12,000.
    • Mulching paper: KES 8,000–12,000.
    • Seedling trays: KES 5,000–10,000 (50 trays × KES 100–200).
  6. Total Material Cost: KES 342,800–455,000.

Read Also: Greenhouse Capsicum Farming: Free Step-by-Step Guide 2025

Metallic Greenhouses

Cost of constructing Greenhouses in kenya
Metallic Greenhouse

Metallic greenhouses use galvanized steel or aluminum frames, offering durability (10–15 years) and resistance to rust and harsh weather. They are ideal for commercial farming.

Small Metallic Greenhouse (8x15m, 120 m²)

  1. Frame Materials:
    • Galvanised steel frames (42 mm poles, 38 mm arches): KES 150,000–200,000.
    • Screws and connectors: KES 5,000–8,000.
  2. Covering Materials:
    • Greenhouse polythene (200 microns, UV-treated, 1000 gauge): KES 13,200 (120 m² × KES 110/m²).
    • Profiles and wires: KES 5,000–8,000.
  3. Ventilation and Pest Control:
    • High-density insect nets: KES 6,000–9,000 (60 m² × KES 100–150/m²).
    • Roll-up side vents: KES 10,000–15,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 20,000–30,000.
    • 1,000L water tank: KES 8,000–12,000.
  5. Other Materials:
    • Greenhouse door (metallic): KES 8,000–12,000.
    • Mulching paper: KES 3,000–5,000.
    • Seedling trays: KES 2,000–4,000 (20 trays × KES 100–200).
    • Crop support system (for tomatoes/capsicum): KES 5,000–10,000.
  6. Total Material Cost: KES 235,200–313,000.

Medium Metallic Greenhouse (8x24m, 192 m²)

  1. Frame Materials:
    • Galvanized steel frames: KES 200,000–300,000.
    • Screws and connectors: KES 8,000–12,000.
  2. Covering Materials:
    • Greenhouse polythene (200 microns, UV-treated): KES 21,120 (192 m² × KES 110/m²).
    • Profiles and wires: KES 8,000–12,000.
  3. roll-up side vents: KES 15,000–20,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 30,000–50,000.
    • 1,000L water tank: KES 8,000–12,000.
  5. Other Materials:
    • Greenhouse door (metallic): KES 8,000–12,000.
    • Mulching paper: KES 5,000–7,000.
    • Seedling trays: KES 3,000–6,000 (30 trays × KES 100–200).
    • Crop support system: KES 10,000–15,000.
  6. Total Material Cost: KES 321,120–454,400.

Large Metallic Greenhouse (16x30m, 480 m²)

  1. Frame Materials:
    • Galvanized steel frames: KES 400,000–600,000.
    • Screws and connectors: KES 15,000–20,000.
  2. Covering Materials:
    • Greenhouse polythene (200 microns, UV-treated): KES 52,800 (480 m² × KES 110/m²).
    • Profiles and wires: KES 15,000–20,000.
    •  
  3. Ventilation and Pest Control:
    • High-density insect nets: KES 24,000–36,000 (240 m² × KES 100–150/m²).
    • Roll-up side vents: KES 20,000–30,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 50,000–80,000.
    • 2,000L water tank: KES 15,000–20,000.
  5. Other Materials:
    • Greenhouse door (metallic): KES 10,000–15,000.
    • Mulching paper: KES 8,000–12,000.
    • Seedling trays: KES 5,000–10,000 (50 trays × KES 100–200).
    • Crop support system: KES 15,000–25,000.
  6. Total Material Cost: KES 634,800–868,000.

Polycarbonate Greenhouses

Polycarbonate greenhouses offer superior light transmission and durability (15+ years), suitable for high-value crops like flowers and herbs. They are typically used for larger sizes due to cost.

Small Polycarbonate Greenhouse (8x15m, 120 m²)

  1. Frame Materials:
    • Galvanized steel frames: KES 150,000–200,000.
    • Screws and connectors: KES 5,000–8,000.
  2. Covering Materials:
    • Polycarbonate sheets (6mm, UV-treated): KES 90,000–120,000 (120 m² × KES 750–1,000/m²).
    • Profiles and wires: KES 5,000–8,000.
  3. Ventilation and Pest Control:
    • High-density insect nets: KES 6,000–9,000 (60 m² × KES 100–150/m²).
    • Roll-up side vents: KES 10,000–15,000.
  1. Irrigation System:
    • Drip irrigation kit: KES 20,000–30,000.
    • 1,000L water tank: KES 8,000–12,000.
  2. Other Materials:
    • Greenhouse door (metallic): KES 8,000–12,000.
    • Mulching paper: KES 3,000–5,000.
    • Seedling trays: KES 2,000–4,000 (20 trays × KES 100–200).
    • Crop support system: KES 5,000–10,000.
  3. Total Material Cost: KES 304,000–433,000.

Medium Polycarbonate Greenhouse (8x24m, 192 m²)

  1. Frame Materials:
    • Galvanized steel frames: KES 200,000–300,000.
    • Screws and connectors: KES 8,000–12,000.
  2. Covering Materials:
    • Polycarbonate sheets (6mm, UV-treated): KES 144,000–192,000 (192 m² × KES 750–1,000/m²).
    • Profiles and wires: KES 8,000–12,000.
  3. Ventilation and Pest Control:
    • High-density insect nets: KES 9,600–14,400 (96 m² × KES 100–150/m²).
    • Roll-up side vents: KES 15,000–20,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 30,000–50,000.
    • 1,000L water tank: KES 8,000–12,000.
  5. Other Materials:
    • Greenhouse door (metallic): KES 8,000–12,000.
    • Mulching paper: KES 5,000–7,000.
    • Seedling trays: KES 3,000–6,000 (30 trays × KES 100–200).
    • Crop support system: KES 10,000–15,000.
  6. Total Material Cost: KES 440,600–600,400.

Large Polycarbonate Greenhouse (16x30m, 480 m²)

  1. Frame Materials:
    • Galvanized steel frames: KES 400,000–600,000.
    • Screws and connectors: KES 15,000–20,000.
  2. Covering Materials:
    • Polycarbonate sheets (6mm, UV-treated): KES 360,000–480,000 (480 m² × KES 750–1,000/m²).
    • Profiles and wires: KES 15,000–20,000.
  3. Ventilation and Pest Control:
    • High-density insect nets: KES 24,000–36,000 (240 m² × KES 100–150/m²).
    • Roll-up side vents: KES 20,000–30,000.
  4. Irrigation System:
    • Drip irrigation kit: KES 50,000–80,000.
    • 2,000L water tank: KES 15,000–20,000.
  5. Other Materials:
    • Greenhouse door (metallic): KES 10,000–15,000.
    • Mulching paper: KES 8,000–12,000.
    • Seedling trays: KES 5,000–10,000 (50 trays × KES 100–200).
    • Crop support system: KES 15,000–25,000.
  6. Total Material Cost: KES 937,000–1,248,000.

Additional Considerations

  1. Design Variations:
    • Tunnel Type: Cheaper, suited for cool highlands (e.g., Eldoret), conserves heat.
    • Vented Type: More expensive due to additional roof ventilation, ideal for warm lowlands (e.g., Mombasa).
  2. Climate and Crop Impact:
    • Use thicker polythene (200 microns) or polycarbonate for cold areas to maintain warmth.
    • Crops like tomatoes, capsicum, and roses require clear polythene or polycarbonate for better light transmission.
  3. Cost-Saving Tips:
    • Use organic fertilizers (compost manure) to reduce input costs.
    • Propagate seedlings in-house to save KES 5,000–25,000 per cycle.
    • Apply mulching paper to minimize herbicide costs.
  4. Non-Included Costs:
    • Sand, ballast, and cement for foundation: KES 10,000–30,000 (varies by size).
    • Labor for installation: KES 10,000–50,000.
    • Transport: KES 5,000–20,000 (depending on location).

Most Profitable Crops

Top Crops:

  • Tomatoes (Indeterminate): Yield 7.5 tonnes from 500 plants in a 10x30m greenhouse, revenue KES 600,000 at KES 80/kg, profit KES 300,000 per cycle.
  • Capsicum: KES 100/kg selling price, KES 35/kg production cost, high demand.
  • Cucumbers, Strawberries, Herbs (Basil, Chives): High-value, export potential.
  • Flowers (Roses, Chrysanthemums): Lucrative for export markets.

Crop Selection Tips:

  • Conduct market research for local and export demand.
  • Choose hybrid (F1) seeds for higher yields (e.g., Anna F1, Tylka F1 for tomatoes).

Conclusion

The cost of greenhouse materials in Kenya for 2025 varies significantly by type and size, ranging from KES 114,200 for a small wooden greenhouse to KES 1,248,000 for a large polycarbonate greenhouse.

Wooden greenhouses are budget-friendly for beginners, while metallic and polycarbonate options offer durability for commercial farmers.

About Post Author

Kelvin Wairimu

Kelvin Wairimu is a Young Passionate Agripreneur, Manager and Chief Editor Of The Farmworx. He is an Experienced and Practicing Farmer, Agricultural Economist and a Consultant.He holds a Bacherors Degree in Agricultural Economics From University of Eldoret,CPA 3 And a Certificate in Advanced Computer Software.

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