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How Much Does A Greenhouse Cost?

Typical Range: $6,000 - $25,493

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June 30, 2021

Reviewed by Robert Tschudi, Home Building & Remodeling Expert.
Written by HomeAdvisor.

Cost to Build a Greenhouse

Building a greenhouse costs $15,746 on average with most people paying between $7,380 and $28,370. Depending on the size and what’s added to this space, you could pay anywhere from $3,500 to $35,000 for construction costs.

Building costs depend on many factors, but some of the main considerations include:

  • Greenhouse size
  • Materials
  • Type (including level of automation)
  • Location (a freestanding greenhouse usually costs less than a home attachment)

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National Average $15,746
Typical Range $6,000 - $25,493
Low End - High End $2,500 - $35,000

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Cost data is based on actual project costs as reported by 10 HomeAdvisor members in .

Greenhouse Cost per Square Foot

The average cost for a greenhouse structure (except for kits) is about $25 per square foot. These large greenhouses are 500 to 1,000 square feet.

Other greenhouse costs per square foot depend on the type of greenhouse.

Commercial Greenhouse Construction Costs per Square Foot

A commercial greenhouse (heavy-gauge plastic over a steel framework, plus fans and hydration) will cost at least $2 to $4 per square foot. Commercial spaces are usually at least 20 feet wide (glasshouse builders often refer to structures by their width). To operate a full-time business, it’s recommended that your greenhouse is at least 6,000 square feet (but many experts say 10,000 square feet is ideal).

Just like how people buy things in bulk for a better deal, prices per square foot drop as overall square footage increases. The bigger the greenhouse, the less you’ll pay per square foot.

Greenhouse Cost per Acre

Expect to pay anywhere from $40,000 to $100,000 or more for a 1-acre greenhouse. There are 43,560 square feet in an acre. If building on multiple acres, you likely will pay less than $2 per square foot but final costs depend on many different factors.

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Greenhouse Prices by Type

The average price range for a greenhouse is between $7,380 and $28,370. There are several greenhouse types to choose from.

Hoop House Cost

Building a hoop greenhouse costs $5 to $10 per square foot. For reference, a 20-foot hoop house steel frame costs around $560 and doesn’t include the covering or end walls.

Geothermal Greenhouse Cost

Geothermal greenhouses (also known sometimes as “pit greenhouses” or “Walipini”) run between $6 and $12 per square foot. They are dug into the ground which accesses the earth’s heat.

Heated Greenhouse Cost

Adding a heater to a greenhouse costs anywhere from $50 to $2,000 or more, bumping the average price of a greenhouse up to $17,930 to $19,880. This does not include energy bills or the cost to maintain a heated space.

Rooftop Greenhouse

An urban rooftop greenhouse could cost as much as $1 to $2 million. This type of glasshouse is usually found in urban areas on top of high buildings with flat roofs.

If your home has a flat roof that you think you can build on, it will cost much less than urban rooftop building, but expect to pay more than greenhouses built at or below ground level.

Retractable Roof Greenhouse

Greenhouses with retractable roofs are usually a custom project, typically designed for large or commercial areas. If you’re interested in this style, get an estimate from a greenhouse builder near you.

Hydroponic Greenhouse

A 1,000-square-foot hydroponic greenhouse costs around $35,000 to build. This includes the cost to put in a water line as well as any electrical work. Hydroponic systems have a high yield and don’t use soil for growing, instead relying mostly on air and water.

Greenhouse Materials Cost

Average Cost of Greenhouse Materials
MaterialAverage CostNotes
Rolled rubber flooring$2 per square footAlternative to dirt floor, anti-grip design.
Interlocking tiles$170 for a box of 12 22-square inch tilesProvides drainage.
Glass siding$2.50 per square footVisually attractive, excellent heat conductivity, doesn’t need replacing unless broken.
Polyethylene siding$.12 per square footInexpensive, can fit any shape, popular for hoop houses.
Fiberglass siding$.70 per square footLight but rigid while allowing a degree of flexibility, a popular choice among greenhouse growers.
Polycarbonate siding$59 per square footGood alternative to glass, light and rigid, but scratches easily.
Cedar framing$1 per linear footBeautiful, durable with regular maintenance, naturally insulating, but can attract insects.
Steel framing$2.50 per linear footLow maintenance, but harder to work with than wood and draws heat away from plants.

The materials used will have the biggest impact on your cost. Frames are usually made of wood or steel. Siding runs the gamut from polyethylene to tempered glass. Each material has its pros and cons.

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Cost of Greenhouse Glass

Greenhouse glass costs about $2.50 per square foot. Glass is a great insulator and is highly durable. However, it’s also heavy and needs a frame that can support it. Another potential downside is that it could actually burn plants by magnifying the sun’s rays instead of diffusing them. Many greenhouse growers use a mesh material called greenhouse or shade netting to prevent damage to plants.

Greenhouse Setup Costs

You could pay anywhere from $150 to $14,450 on average to set up an area for a greenhouse. This price does not include installing or building the greenhouse itself.

Here are some average costs you could encounter:

Making a DIY Greenhouse vs. Hiring a Professional

Buying a greenhouse kit is definitely an option, and there are plenty of DIY projects that exist. A hobbyist might relish in creating their own glasshouse or hoop house, but for serious growers and medium-to-larger spaces, it’s definitely recommended to hire a professional for a consultation to a full turnkey installation.

Greenhouse building costs are expensive no matter what. Hiring a greenhouse builder lightens your load in terms of planning and labor, which is a massive convenience and timesaver. The last thing you’d want to happen is to spend lots of time and money crafting a growing space, only to make a mistake that negatively affects your plants.

Greenhouse Kit Costs

The price range for a greenhouse kit varies, but is usually between $580 and $3,000. You could find a kit for as low as $300 and as high as $19,450 or more.

Kits usually don’t come with benches and other amenities. These will have to be bought or built separately, and the cost can vary widely depending on what type you get. In general, potting benches cost about $100 each.


How much does a greenhouse home addition cost?

Attached greenhouses range from $13,000 and $35,000. Freestanding units are typically much less to install than the cost to build a home addition, which is between $21,110 and $69,050.

How do you start a greenhouse?

There are many steps to take before building a greenhouse. You need to come up with a general idea and might need to grade or de-slope the ground even before a greenhouse builder can start working.

Once your greenhouse is built, the planting can begin. Every plant has different needs, so you’ll have to do a lot of research to figure out what your plants need to be successful.

How long does it take to build a greenhouse?

A small greenhouse might take a weekend or less to build, but larger ones can take several weeks or longer. A professional team might finish building in a few days to a week, depending on the size of the project.

Which type of greenhouse should I build?

There are tons of greenhouse options out there. Researching each type, weighing the pros and cons, and consulting with a professional builder will help you narrow down the right structure for your property.

Types of Greenhouses
Greenhouse TypeProsCons
Hoop house
Easy to construct and expand on later. Durable, withstands wind, snow, and rain.
Covering might need replacing every 4-6 years, depending on weather conditions.
Inexpensive to heat and cool. Usually 10 degrees warmer than a greenhouse above ground.
Might need a building permit. Typically only gets natural light during the day (not morning or evening).
Easier to regulate temperature. Some heaters allow for more CO2, helping plant growth.
Cost more upfront and to maintain.
Lower operating costs than actual farming. Provides fresh produce in urban areas. Eco-friendly way to garden.
Most expensive greenhouse to build.Tough to get building permits.
Reuses water and uses much less water than traditional soil growing. Grows anywhere, doesn’t require soil. Much higher yields than traditional growing.
Expensive to install. Since growing happens at a faster rate, mistakes affect plants faster.

How warm does a greenhouse get?

Greenhouses can heat up really well, but you don’t want temperatures above 81 degrees Fahrenheit. Anything higher than that will hurt your plants. In fact, ventilation is very important in autumn and winter seasons, as greenhouses can get overheated even on the coldest days. Many greenhouse owners install automatic roof or window vent systems that open if the temperature inside the greenhouse exceeds a pre-set level (and then close when the temperature drops).

Without even adding a heater, a well-insulated greenhouse will stay 30 degrees warmer than the outside.

How much does a greenhouse cost to maintain?

Some greenhouses (such as pit or geothermal versions) only cost $1 a day to maintain. Hydroponic systems might cost $500 a year, not counting the cost of seeds.

If you have to heat or cool this area, you’ll pay substantially more. Even just heating overnight adds an average of at least $10 to your bill.

How much does a commercial grow room setup cost?

On average, setting up a commercial grow room costs $42 per square foot, but could run up to $75 per square foot if setting up indoors. Some greenhouse owners now use LED grow lights, which cost more but use significantly lower energy costs to operate

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