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Free Shipping on Items over $200! Price match guarantee.

Riverstone Industries Monticello Black Greenhouse Premium

Save 28% Save 28%
Original price $5,777.00
Original price $5,777.00 - Original price $9,202.00
Original price $5,777.00
Current price $4,149.99
$4,149.99 - $7,949.99
Current price $4,149.99

Find a better price? We will beat it!If you find this item cheaper elsewhere (price plus shipping and taxes), please email or call us.*We do not price match past orders, local stores, prices below our costs, and the item must be in stock.

Find a better price? We will beat it!

If you find this item cheaper elsewhere (price plus shipping and taxes), please email or call us.

*We do not price match past orders, local stores, prices below our costs, and the item must be in stock.

Monticello Black Greenhouse Premium

Monticello Greenhouse Premium is the ideal option for any gardener, no matter what kind of climate they live in. With this product, you can cultivate lush plants all year long! Monticello Greenhouse Premium offers superior light and security with unmatched durability. Plus, it's built with 8mm thick twin-wall polycarbonate for extra stability and rigidity - no thin walls here! Installing this beautiful addition to your outdoor space will result in added value and enjoyment to your house like never before. Treat yourself or a loved one today!



*3-5 business days. Greenhouse normally ships via FedEx Ground.


  • Heavy-duty frame construction
  • Uses 70 lbs more aluminum than the average imported greenhouse
  • Frame material: Extruded aluminum (US grade, stronger, thicker)
  • High-impact, UV-stable Polycarbonate glazing
  • Faster and easier assembly: Patent-pending Twist & Lock construction, as well as rigid “ribbed” design for interlocking the pieces
  • 1x roof vents (2ft x 2 ft) with automatic openers
  • Expandable: Yes, in 4-foot sections
  • Large double door (4ft wide x 6ft high)
  • The door is hinged and lockable (not with a key)
  • Foundation frame: Integrated flush base design for direct anchoring to the ground or deck
  • Integrated dual gutter system for easy rainwater collection
  • Includes NEW Door Lock and Vent Locks for extreme weather conditions

Included in the Package:

MONT Greenhouse - An ideal greenhouse designed to maximize light and security. This state-of-the-art structure is crafted from premium US-grade aluminum for durability you can trust plus electrostatically painted black –certified lead-free so it won't compromise on safety either!
MONT Work Bench Station - The design is simple, unique, and thoughtful.  The Work Station can be installed either during initial construction or at a later time.  Since the installation of the support bars uses the inside bolt tracks the shelving could be set at any height within the greenhouse (up to 4ft off the ground).  The sturdy vented shelving units on the Work Station are constructed from commercial-grade high-impact PVC.
Overhead Automatic Watering System -This commercial-grade watering system is designed to hang from the ceiling, so you can save precious time, effort, and energy. With its two weighted sprinkler heads separated by a 4 ft. spray in a circular pattern, you'll be sure to give your garden the perfect amount of hydration.
Sink System - Whether it's cleaning up dirt and mud from shoes, scrubbing off garden tools, or washing paint brushes, this sink is perfect for all your needs. It is equipped with a mounting kit which makes it suitable for both indoor and outdoor greenhouse uses.
NEW Door Lock and Vent Lock - These locks are crafted with robust materials to withstand harsh weather conditions. This enhances the durability of your greenhouse, ensuring it remains functional and secure even during severe weather events.

Optional Add-ons:

Extra Roof Vent Crafted from quality aluminum and polycarbonate, designed to be installed quickly in 30 minutes or less. It also comes with a 10-year warranty! Plus, it has an automatic electric opener so that you don't need additional vents. Plug it in and enjoy improved airflow within your greenhouse space.


RSI door kit Door Kit - you can keep your greenhouse temperature consistent and comfortable year-round, even during cold winter months Furthermore, the doors provide better access to your plants, allowing you to take care of them with ease and efficiency. The kit includes two robust aluminum frames that provide a strong foundation for both doors as well as all hardware required for installation, including fasteners and an instruction manual. With the MONT Door Kit, you can easily add extra protection to your greenhouse while significantly increasing usability. So install one today and make your gardening experience more enjoyable!
RSI heating system Heating System - The RSI greenhouse heating system is a reliable and efficient way to maintain the temperature of your building or greenhouse. Its ceiling-mounted design allows maximum airflow while also providing 360° of direction control. The adjustable louvers let you manage the severity of the heat flow and direct it toward specific areas as needed. With its high-efficiency burner, you can rest assured that your heating needs are taken care of for long periods of time.
RSI propane gas heater RSI Radiant Heating Propane Gas System - designed to deliver direct heat and allow for the temperature to be maintained over long periods of time. The gas furnace heater is ventless and runs off LP (propane) gas. The electric starter and thermostatically controlled heat output make adjusting to the correct temperature easy.

Flooring Kit Create a safe and stylish surface for your greenhouse with our customizable flooring kit. Featuring breakoff square segments from 100% regenerated polypropylene, this interlocking modular system provides an anti-slip walking experience even under heels! With six available colors – green, gray, blue, black brown & tan - the 41 tiles included in each set will perfectly match any outdoor décor.


Louver Window Its 18" square size, non-rusting extruded aluminum build, and expertly crafted dual seals help keep insects out while allowing perfect ventilation levels due to its intelligent solar-powered opener that expands or contracts based on temperature changes for automatic opening and closing action.


Outdoor Sink - Riverstone's 33" wide x 20" deep x 7" tall large outdoor potting sink is an ideal solution for gardeners, providing a handy space within reach to clean vegetables, and tools or rinse off dirty hands. It is equipped with a mounting kit which makes it suitable for both indoor and outdoor greenhouse uses. Furthermore, its detachable hose reel can extend up to 200 feet of the gardening range.

Solar Ventilation Kit - this kit allows you to circulate air through your greenhouse and maintain a comfortable temperature without relying on an electrical connection. Included in every package are a 40 amp solar panel, 16" commercial exhaust fan, aluminum 5-louvered cover, and thermostat - This product has twice as much power as you need, even before you add optional marine battery or heating/lighting attachments. You will also have peace of mind from its 3-year warranty and easy installation process.

 *Proudly designed and made in the USA! Allow for a FULL weekend to Fully Assemble (ground prep included). Two people suggested assembly. The Manual is fully illustrated.

 Greenhouse Comparison
Riverstone Monticello Riverstone Monticello Premium Riverstone Mojave Riverstone Moheat Riverstone Growers
Roof Vent 2ft x 2ft 2ft x 2ft 2ft x 2ft 2 - 2ft x 2ft 2ft x 2ft
Snow Load Capacity 24lbs/sq. ft. 24lbs/sq. ft. 24lbs/sq. ft. 24lbs/sq. ft. 24lbs/sq. ft.
Wind Load 65 MPH 65 MPH 65 MPH 65 MPH 65 MPH
Work Bench No Yes Yes Yes Yes
Interior Shade No Yes No No No
Programmable Watering System No Yes Yes Yes No
Sink System No Yes Yes Yes No
Solar Ventilation System No No Yes Yes No
Vegi-Bee Mechanical Pollinator System
No No Yes Yes No
Radiant Heating Propane Gas System No No No Yes Yes
Genesis Drip Irrigation System No No No No Yes
Roof Tinted Tinted Tinted Tinted Light Diffusing
Sizes 8x8' , 8x12' , 8x16' , 8x20 , 8x24' 8x8' , 8x12' , 8x16' , 8x20 , 8x24' 8x12' , 8x16' , 8x20 , 8x24' 8x12' , 8x16' , 8x20 , 8x24' 8x8' , 8x12' , 8x16' , 8x20 , 8x24'
Warranty 10 Yrs. (Strongest in the Industry) 10 Yrs. (Strongest in the Industry) 10 Yrs. (Strongest in the Industry) 10 Yrs. (Strongest in the Industry) 15 Yrs. (Strongest in the Industry)


1.Does this greenhouse include a tie down system?

This greenhouse is not equipped with a tie down kit; however, its integrated base makes it easy to anchor directly into the ground or foundation.

 2. We live in a windy area. What is wind resistance of this product?

The Riverstone  Monticello Black Greenhouse Premium is designed to withstand wind speeds up to 65 MPH.

3. Is it possible to take down and relocate this greenhouse?

Absolutely! Our product is designed to be taken apart and relocated.

4. Is it hard to assemble?

The Mont is designed for the average homeowner, no special degrees are needed. The time to assemble depends on the weather, skills, options, and number of helpers you have in the process. All the pieces are cut to size and should fit snug, BUT if something is not working please reach out to our help lines so we can make sure that there are no delays in the process.

5. If I purchase this greenhouse, is it possible to expand it?

Yes. Extension kit is available!

Assembly Guide


Assembly Manual

8' x '8 Download 8' x 12' Download 8' x 16' Download 8' x 20' Download 8' x 24' Download



With all the online options that exist, why should you put your trust in us and make your purchase from Homestead Supplier?

Small Family Owned - We are a small family owned business and stand behind every product we sell. We have a reputation for treating our customers with respect and integrity, which is why our customers keep coming back!

Customer Service - Our #1 priority is our customer service. We have toll free phone support, live chat during normal business hours, and often our reps can be found answering emails at all hours of the night. We take our customer service very seriously and strive to deliver the best experience for our customers.

Authorized Dealer - All of our products are high quality brand name and all come with a manufacturer warranty. We are authorized dealers for all the brands we carry and stand behind everything we sell. If you are not 100% satisfied with your order, let us know and we will make things right.

Secure Shopping - We offer a safe and secure online shopping experience. We use SSL encryption technology so you never have to worry about the safety of your transaction. Additionally, we never store any credit card information. If you still feel uncomfortable inputting your credit card information online, you can call us and we can take your order over the phone.

We have the best prices around! Happen to find a lower price? We can beat it and then some!

If you find an item cheaper elsewhere (price plus shipping and taxes), please send us an email at or call us at 1-800-540-9051.


  •  We do not price match past orders, local stores, club or warehouses and the item must be in stock.
  •  We reserve the right to deny any price match that we would incur a loss on.
  • Please email or call us with the information below:

- Competitor web address (url)
- Price quoted on site
- Details of any promotions
- Your Name
- Your Email Address or Phone Number

Free Shipping - We currently offer free shipping on almost all items over $199 to the contiguous United States. For some heavier and bigger items such as sheds we may charge shipping for some models to some states. All items under $199 have a low shipping rate which can be viewed when checking out.  If you would like your item shipped somewhere outside of the contiguous United States, please email us and we can provide a custom shipping quote.

Order Confirmation - After your order is placed, you will receive an email confirmation which ensures that we have received your order. While we try our best to keep stock and inventory up to date, when we receive your order, we will immediately confirm the item is in stock and ready to ship. In a case an item is on backorder, we will let you know by email or phone. If you choose not to wait until your item is back in stock, we will promptly provide a refund for the item.

Order Shipment - Your item will ship within the designated lead time posted on your product listing page, which varies depending on the product. Once your item has shipped, you will receive an email confirmation with your tracking number and any other shipping information.  Most items require approximately 24 hours for the tracking information to be updated. 

Damages - You should inspect all shipments at the time of delivery. If your shipment is damaged, you should note it with the driver when signing for the delivery. If the item is damaged, please contact us immediately and let us know. Depending on the damage we may be able to send a replacement part if that makes more sense than replacing the item. Please keep all original packaging as damaged items need to be returned in the original packaging. Returns on damaged items need to be approved by customer service before returning.

Incorrect Item - Sometimes mistakes happen and we may ship the wrong item, if that occurs contact us at and we will send out a replacement item provided the return item(s) are received back in the original packaging with all original content. Replacement returns due to our error are NOT subject a restocking charge.

Order Cancellation - If you need to cancel an order, please contact us within 24 hours of placing the order.  If your order has already been processed, you are subject to a 4% cancellation fee. If you would like to cancel after your order has shipped, you will have to follow our return process to return your item. Customized orders and orders that are built, such as sheds, cannot be cancelled once they begin production.

Returns – Many items can be returned for up to 30 days from the delivery date. Customized orders and orders that are built, such as sheds, cannot be returned. To start a return, please email us at All products must be returned unopened and in the original packaging.  Reason for return must be provided.  All returns are subject to a 10% - 25% restocking fee which will be deducted from your refund to the same credit card used for your purchase. A Return Authorization Number is required before sending back a return. Please contact our customer service to receive a Return Authorization Number. You will be responsible for all shipping costs for a return unless the return is due to a manufacturing defect or otherwise approved from customer service. If a product is shipped with expedited shipping requested by the customer, the shipping cost is not refundable. Return shipping address will be given when RMA number is issued.  DO NOT ship returns to our corporate mailing address. 



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Don't Take Our Word For it! Here's What Our Customers Think:

Hats off to Homestead Supplier for superior customer service - these guys go above and beyond to answer all my questions. We purchased the Beach House shed for some extra storage but ended up using it as a backyard playhouse for the kids :). Now we have to buy another shed lol... The shed is great, sturdy, and would recommend to others.

- Sam B.

I found the buying experience to be far better than expected. Very easy to order, received immediate order confirmation, excellent customer service, order showed earlier than expected and in excellent condition. Would definitely recommend

- Dean G.

After 7 months of waiting for our pool to be completed, we are thrilled to have gotten our new shed built. It perfectly completes our backyard renovation. We love it! The instructions were clear, and the building is sturdy. We’ve had a number of inquiries about who we bought our shed kit from.

- Karen E.


We are located in central California and sell online only.

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