Building a backyard greenhouse can vary in cost depending on factors such as size, materials used and additional features. On average, expect to spend anywhere from $500 to $10,000 for a basic structure. You can compare prices on greenhouse kits here.
- What is the Price to Build
- How to Reduce Construction Expenses
- 10 Budget-Friendly DIY Options
- How to Get Financing
What is the Price to Build a Greenhouse?
In short, the cost of building a planthouse on your property can range from a few hundred to several thousand dollars, depending on size, materials and additional features.
Kits, however, can provide an up-front price so you know what to expect. For example, the Palram Hybrid, the Eagle Peak Pre-Fab and the Outsunny Greenhouses range between about $400-$1500 (depending on size). You can see all kits here.
The expense to construct a greenhouse (or kit) can vary widely depending on several factors, so let’s break it down. Here are the factors that influence the price:
Greenhouse Size:
One of the most significant factors influencing your expenditure is the size of the structure. Larger frames will naturally require more materials, increasing both construction and operational fees. A small 6’x4′ can cost as little as a few hundred dollars, while larger, more elaborate structures can run into the thousands. Also see: What Size Greenhouse Should I Buy?
Materials:
The choice of materials plays a crucial role. Indoor gardens can be constructed using various materials like wood, metal, PVC or polycarbonate panels.
Each material has its price point, with metal and polycarbonate generally being more expensive but offering better durability and insulation. See more: The Best Greenhouse Materials.
Foundation:
Building a proper foundation, whether it’s a simple gravel base or a concrete slab, will add to the cost. A solid foundation is essential for stability and temperature control.
Glazing:
The type of glazing used for the greenhouse walls and roof affects the pricetag. Traditional glass is durable but expensive. Polycarbonate panels are a popular alternative, offering good insulation and durability at a lower pricepoint.
Ventilation & Heating:
Indoor gardens require adequate ventilation and heating systems to regulate temperature and humidity. These systems can vary in complexity and price. Simple manual vents are cheaper, while automated systems with fans, louvers and heaters can be more expensive.
Shading & Cooling:
Depending on your location, you may need shading and cooling systems to prevent overheating during hot months. These systems, like shade cloths and evaporative coolers, come with their own costs.
Greenhouse Accessories:
Additional features such as benches, irrigation systems and shelving can add to the overall bill. While not strictly necessary, they can significantly improve functionality and plant management.
Labor to Build Your Greenhouse:
If you’re building the garden house yourself, you’ll save on labor expenses. However, if you hire professionals for construction, this expense should be factored in.
Location & Permits:
Consider any local regulations, permits, or zoning requirements. These can add to the bill, especially if modifications or approvals are needed.
Gardening Maintenance:
Don’t forget to budget for ongoing maintenance bills like cleaning, repairs and replacements. See: How Much Does it Cost to Maintain a Planthouse?
Also See: Is it cheaper to buy a pre-made kit or build one from scratch?
10 Ways to Reduce Greenhouse Construction Expenses:
1. Choose Affordable Materials: Opt for money-saving materials like PVC pipes, metal conduit, or pressure-treated lumber for the frame. These materials are durable and readily available at lower prices compared to other options.
2. Use Recycled Windows or Doors: Repurpose old windows, glass doors, or even shower doors as the glazing material. These can often be obtained for free or at a fraction of the price of new panel glazing. You may even be able to convert an existing structure like a shed, carport or lean-to into an indoor garden.
3. DIY Foundation: Instead of a concrete foundation, consider a more budget-friendly option like treated wood, cinder blocks, or gravel. These provide stability and drainage without the more expensive concrete.
4. Simplify the Design: Keep the structural design simple and avoid complex shapes or unnecessary features. A straightforward rectangular or hoop house design is budget-friendly and easier to build. In addition, building a smaller nursery reduces the overall price of construction and requires fewer materials.
5. Shop for Sales and Discounts: Look for clearance deals on materials like plastic sheeting, pop-up kits or ventilation equipment. Plus, buying off-season can also lead to significant savings. Also consider second-hand!
6. Community Building: Collaborate with neighbors or a gardening community to share expenses. You can collectively purchase materials in bulk, reducing individual bills. Local suppliers or salvage yards may also offer discounts or promotions.
7. DIY Ventilation: Create your own passive ventilation system using vents or louvers made from salvaged materials rather than investing in expensive automatic ventilation systems.
8. Use Budget-Friendly Coverings: Instead of expensive polycarbonate panels, consider using UV-resistant plastic film. It’s affordable, durable and provides excellent insulation. In other words, paying less money doesn’t necessarily mean that you end up with a less effective or less productive plant nursery.
9. DIY Shelving and Benches: Build your own plant shelving and benches using inexpensive materials like reclaimed wood or cinder blocks. This custom approach can save money compared to store-bought options.
10. Skip Heating or Go Solar: If you live in a mild climate, consider forgoing heating systems and rely on passive solar heating during the day. Alternatively, you can heat your greenhouse with solar panels, which can save you a bunch of cash but also stretch out your growing season. This eliminates the expense of heaters and ongoing heating bills.
10 Budget-Friendly DIY Options:
Creating a money-saving DIY garden nursery can be a rewarding project, but it requires careful planning. Here are some budget-friendly options to consider:
1. Hoop House or PVC Greenhouse:
Hoop houses represent an uncomplicated and economical choice, crafted from arching PVC or metal conduit pipes enveloped in plastic. These structures are ideal for extending the growing season affordably, though their durability may not match that of more robust alternatives.
2. Cold Frame:
A cold frame, a straightforward and cost-effective substitute for a hothouse, is essentially a bottomless enclosure with a transparent lid, often fashioned from old windows or polycarbonate panels. Cold frames excel in shielding plants against frost and chill, albeit they’re not suited for all-year cultivation.
3. Utilizing Reclaimed Materials:
Embrace innovation by repurposing items like old windows, glass doors, or salvaged lumber to erect your framework. This method not only benefits the planet and your wallet but may also demand a greater investment of your time and DIY prowess.
4. Mini Greenhouse Kits:
Mini greenhouses are pre-designed and often come with all the necessary materials and instructions. They are smaller in size but can be perfect for beginners and those with limited space. Look for deals and discounts to get them at an affordable price.
5. Upcycled Structures:
If you have an existing structure like a carport, shed, or pergola, consider converting it into a plant nursery. You’ll save on construction bills and still benefit from a protected growing environment.
6. DIY Polycarbonate Greenhouse:
While polycarbonate panels are more expensive than plastic sheeting, they offer better insulation and durability. Building a simple polycarbonate frame and covering it with the panels can be a cost-effective way to create a sturdy, long-lasting structure.
7. Community or Co-op Covered Garden:
Consider joining or starting a community gardening project with neighbors or fellow gardeners. By sharing resources, you can collectively build and maintain a larger, more robust plant nursery.
8. Lean-To Nursery:
A lean-to is designed to adjoin an existing structure, such as your home or garage. This approach minimizes the necessity for constructing a completely independent planthouse, offering savings on materials and the building process.
9. Build Your Own Greenhouse from Plans:
There are numerous online sources that offer nursery plans at no or minimal expense. Utilizing a well-outlined plan enables efficient use of resources and construction efforts, allowing you to stretch your budget further.
10. Seasonal Grow Houses:
Rather than striving for an all-year planthouse, opting for a seasonal setup could be more practical. Operate it mainly during the peak growing periods and then dismantle or securely store it when not in use, which can significantly reduce upkeep and heating expenditures.
How to Find Financing Options or Grants:
Alternatively, you might reduce your construction expenses by seeking assistance from other entities. Follow these steps for guidance:
1. Government Agricultural Programs: Numerous countries offer grants, subsidies, or low-interest financing options to support farmers and gardeners. Investigate programs through your nation’s agricultural department or other relevant government bodies. In the United States, for example, the USDA (United States Department of Agriculture) provides a variety of grants and loans for greenhouse initiatives.
2. Local Agriculture Extension Offices: Reach out to your local agricultural extension office as they might help you find financial support opportunities in your area.
3. Nonprofit Organizations: Search for nonprofit groups focused on sustainable agriculture, horticulture, or community gardening initiatives. Community or garden associations may also be valuable resources.
4. Online Grant Databases: Utilize online resources like grant databases or directories that list available grants and funding sources. For example, websites like Grants.gov (for the United States) and GrantWatch provide comprehensive databases of grants across various categories, including agriculture and horticulture.
5. Greenhouse Manufacturers and Suppliers: Some planthouse companies offer financing options, discounts, or grants to customers purchasing their products. Inquire with managers about any available incentives.
6. Crowdfunding and Fundraising: Consider crowdfunding platforms like Kickstarter, Indiegogo, or GoFundMe to raise funds for your plant-growing project. With a worthy environmental vision, you are more likely to attract backers.
Remember that the availability of grants and financing options may vary depending on your location, the nature of your planting project and your eligibility.
Last Updated April 9, 2024
