Building or installing a greenhouse costs $5 to $30 per square foot on average for labor and materials, or $2,500 to $15,000 total for a 500-square-foot backyard greenhouse. The total cost depends on the greenhouse size, type, materials, and whether you choose a prefab greenhouse or hire a professional to design and construct a custom-built structure.
- A hoop house style greenhouse costs $5 to $10 per square foot to build, making it the most budget-friendly option. This style is made with a row of half-hoop arches covered with plastic sheeting and works well in wet climates.
- A geodesic or dome style greenhouse costs $10 to $25 per square foot and is ideal for small spaces.
- An A-frame greenhouse costs $25 to $35 per square foot to build and is ideal for snowy and rainy climates.
- If your space is limited, consider a kitchen greenhouse window instead. A kitchen garden window costs $1,500 to $5,000 installed and is typically 24"x24".