Wondering how much are greenhouses in 2026? Greenhouse prices can range from around $50 for a basic mini greenhouse to $10,000 or more for a large, professionally installed structure. The final cost depends on the greenhouse type, size, frame and covering materials, foundation, ventilation, utilities, and installation.
Average Greenhouse Cost at a Glance
A small hobby greenhouse can cost roughly $50–$500, while medium backyard greenhouses commonly fall around $500–$3,000. Larger permanent or professionally equipped greenhouses can cost $3,000–$10,000+, especially when foundations, heating, electricity, irrigation, and professional assembly are included.
| Greenhouse Type | Typical Cost Range* |
| Mini / Hobby Kit | $50–$500 |
| Hoop House / Polytunnel | $200–$3,000 |
| Lean-To | $500–$5,000+ |
| Aluminum Frame | $500–$5,000+ |
| Wood Frame | $1,000–$10,000+ |
| Geodesic Dome | $1,000–$10,000+ |
| Rooftop / Attached | $2,000–$15,000+ |
| A-Frame | $200–$3,000 |
Greenhouse Cost by Type
Mini / Hobby Greenhouse Kits
Mini greenhouse kits are generally the least expensive option. Basic models can cost around $50–$500, depending on size, frame material, shelving, doors, and covering.
Hoop House / Polytunnel Greenhouses
Hoop houses use curved pipes or metal hoops covered with greenhouse film. Smaller DIY versions may cost a few hundred dollars, while larger or more durable polytunnels can reach $3,000 or more.
Lean-To Greenhouses
A lean-to greenhouse attaches to an existing wall, which can reduce the need for a separate structural wall. Prices commonly range from $500 to $5,000+, depending on size, glazing, and construction.
Freestanding Aluminum-Frame Greenhouses
Aluminum frames are lightweight, resistant to corrosion, and commonly paired with polycarbonate or glass panels. Small models may start around $500, while larger premium structures can cost several thousand dollars.
Wood-Frame Greenhouses
Wood-frame greenhouses can provide a traditional appearance and strong structure. Costs vary significantly depending on lumber prices, foundation requirements, glazing, and whether the structure is DIY or professionally built.
Geodesic Dome Greenhouses
Geodesic domes use interconnected structural sections to create a rounded greenhouse. Smaller DIY kits may cost around $1,000, while larger custom or professionally assembled domes can cost considerably more.
Rooftop / Attached Greenhouses
Rooftop and attached greenhouses generally cost more because they require additional structural planning and potentially specialized installation. Depending on the building and design, costs can reach $2,000–$15,000+.
A-Frame Greenhouses
A-frame greenhouses have a simple triangular structure that can be economical to construct. Basic DIY versions may cost a few hundred dollars, while larger kits with durable materials can cost several thousand dollars.
Greenhouse Cost by Size
Size is one of the biggest factors affecting the total greenhouse price. More square footage generally means more framing, covering, foundation materials, and installation labor.
Small Greenhouses (Under 100 Sq Ft)
Small greenhouses can cost approximately $50–$1,500, depending on whether you choose a basic kit or a more permanent structure. They are suitable for seedlings, herbs, vegetables, and smaller gardens.
Medium Greenhouses (100–300 Sq Ft)
Medium greenhouses commonly cost around $500–$5,000+. Additional ventilation, stronger framing, doors, shelving, and upgraded coverings can increase the price.
Large Greenhouses (300+ Sq Ft)
Large greenhouses can cost $3,000–$15,000+, particularly when they include permanent foundations, heating, irrigation, electrical systems, automatic ventilation, or professional installation.
What Affects the Cost of a Greenhouse?
Size and Layout
Larger greenhouses require more materials and labor. Complex layouts, multiple growing areas, additional doors, and custom dimensions can also increase the cost.
Frame Material
PVC and basic metal tubing can be economical for smaller structures, while aluminum and treated wood can cost more. The frame should be selected according to the greenhouse’s size, climate, and expected lifespan.
Covering Material
Plastic film is generally less expensive than rigid polycarbonate or glass. While premium glazing increases the initial cost, it can offer greater durability and insulation.
Foundation
Some small greenhouses can be installed directly on prepared ground, while larger permanent structures may require a concrete, gravel, or framed foundation. Foundation work can significantly affect the total project cost.
Ventilation and Climate Control
Vents, fans, heaters, shade systems, and automatic controls can add to the budget. These features become more important when growing conditions need to be controlled throughout the year.
Electricity and Plumbing
Lighting, heating, fans, irrigation, and water connections can increase installation costs. The complexity of connecting these utilities depends on the greenhouse location and existing infrastructure.
Professional Assembly
A DIY greenhouse can reduce labor costs, while professional assembly adds installation charges. Complex structures may benefit from professional help to ensure the frame, foundation, and covering are installed correctly.
DIY vs. Professional Assembly Cost
| Greenhouse Size | DIY Assembly Cost | Professional Assembly Cost |
| Small (under 100 sq. ft.) | $100–$1,000 | $300–$1,500 |
| Medium (100–300 sq. ft.) | $500–$3,000 | $1,000–$5,000 |
| Large (300+ sq. ft.) | $2,000–$8,000+ | $4,000–$15,000+ |
Conclusion
So, how much are greenhouses? The answer depends primarily on the greenhouse’s size, type, materials, features, and installation method. A basic mini greenhouse may cost less than $100, while a large permanent greenhouse with professional installation and climate-control features can cost $10,000 or more. Before buying, compare the greenhouse’s material quality, required foundation, ventilation, utilities, and assembly costs rather than looking only at the kit’s purchase price.
Frequently Asked Questions
Do I Need a Permit for a Greenhouse?
Permit requirements depend on your local building regulations, greenhouse size, foundation, location, and whether utilities are being installed. Check with your local building authority before constructing a permanent or large greenhouse.
How Much Does It Cost to Assemble a Greenhouse Kit?
Assembly costs vary based on the greenhouse’s size, design, location, and installation complexity. A simple kit may be relatively inexpensive to assemble, while larger structures can require significantly more labor.
Can a Handyman Install a Greenhouse?
Yes, a handyman can often assemble many greenhouse kits and handle tasks such as framing, shelving, doors, and basic repairs. Larger structures involving foundations, structural modifications, or electrical work may require specialized professionals.
What Size Greenhouse Should I Buy?
Choose a size based on the number of plants you want to grow, available space, and future needs. If your budget and property allow it, leaving some extra growing space can be useful as your gardening expands.
How Much Does a Small or Mini Greenhouse Cost?
A basic mini greenhouse can cost approximately $50–$500, although premium small models can cost more. Size, frame material, covering, shelving, and included accessories all affect the price.
Do Greenhouses Need Electricity or Plumbing?
No. A basic greenhouse can operate without electricity or plumbing. However, electricity may be useful for fans, lights, heaters, and automated systems, while water connections can make irrigation more convenient.
How Long Does Greenhouse Assembly Take?
A small, simple greenhouse kit may take a few hours to assemble, while larger or more complex structures can take a day or longer. Foundation preparation, custom construction, and additional equipment can extend the installation time.
