The Estate large U-shape glass greenhouse with central courtyard

PrimeGreenhouses - Large U-Shaped Aluminum Glass Greenhouse "The Estate" - Black Aluminum Frame, Tempered Glass Living Room, 115 MPH Wind Rated

20'0" / 30'6"

$ 20,190

PrimeGreenhouses - Large U-Shaped Aluminum Glass Greenhouse "The Estate" - Black Aluminum Frame, Tempered Glass Living Room, 115 MPH Wind Rated

4.8Trusted by growers across the US

Glass Greenhouse | The Estate

U-shape — wraps a sheltered courtyard

A true glass living room for your garden, built to last.

Premium glass7x stronger, 95% clear light

Storm-ready115 mph wind · 48 PSF

Free shippingInsured, US-wide

12-year warrantyOn the full frame

$ 22,209

$ 20,190

Save $ 2,019

Why choose real glass?

Size guide · for reference only

Best for a large growing room A dedicated high-yield greenhouse, anchored by a sheltered courtyard for intimate gatherings.

What really makes the difference Compare

See what's included and what you need See all

Do I need a building permit? Find out

Secure checkout · Questions? Call or message our team

The Estate is our most impressive glass greenhouse, combining a striking U-shaped design with a reinforced matte black aluminum frame and tempered safety glass. With up to 750 sq ft of space, it creates an exceptional garden room for growing, entertaining, relaxing, and enjoying your outdoor space year-round.

Available in three generous configurations, one of the largest walk-in glass greenhouse kits available for residential backyards. Ridge height 8'9" · side wall 6'4" · door 6'1" on every size.

506 sqft 20'0" x 30'6"

626 sqft 20'0" x 42'0"

750 sqft 22'5" x 49'4"

Frame & Glazing

Frame: Rust-resistant reinforced aluminum.
Glazing: Tempered safety glass, up to 7x stronger than ordinary panes. If it ever breaks, it crumbles into small, blunt pieces instead of sharp shards.
Light transmission: Up to 95%, with no diffusion - stays clear for decades and does not yellow like polycarbonate can over time.

Weather Resistance

Wind rating: 115 mph.
Snow load: Up to 48 PSF (about 4.5 ft of snow).

Heights

Ridge height: 8'9" on every configuration.
Side wall height: 6'4".
Door height: 6'1".

Access & Layout

Access: Single or double sliding door depending on width.
Layout: U-shaped design wraps three glass wings around a sheltered central courtyard.
Ventilation: Manual roof vent windows included at no extra cost - the number depends on the size you select.
Drainage: Integrated rain gutter system with built-in drainage, included.

Aluminum frame and structural profiles
Tempered glass panels
Sliding door and door components
Roof window(s) for your selected size
Gutter and downspout components
Glazing seals and rubber strips
Bolts, nuts, screws & fasteners
Detailed assembly instructions

Compatible add-ons: extra sliding doors, roof decoration, and an automatic window opener.

FREE Damage-Proof Shipping

Every order ships free and fully insured directly to your door anywhere in the continental United States.

Standard Delivery — FREE
Estimated delivery: 14–16 weeks

Delivery dates are estimates and are not guaranteed. They represent the earliest expected delivery window based on current production and freight schedules.

Items are manufactured in batches and shipped from Europe. Production volume, ocean freight, port handling, customs clearance, and other factors may affect delivery times. If your estimated delivery window changes, we’ll notify you by email.

Returns & Refunds
You have 30 days after delivery to request a return, exchange, or refund in accordance with our return policy.

Comes with step-by-step illustrated instructions and all necessary hardware. Common household tools only - set up by two people in 5 to 7 days. Professional installation is also available if you'd rather not do it yourself.

Building permit: given its size, some local jurisdictions may require a building permit for The Estate. Requirements vary by city and county - we recommend checking with your local building department before ordering, or asking our team for guidance.

Download full manual (PDF)

12-year structural warranty on the frame. Tempered glass is covered against manufacturing defects. Backed by a 30-day money-back guarantee.

Customer Reviews

★★★★★ Verified buyers

M Max C.

★★★★★

Built this for our restaurant garden. Incredible glass quality, perfect climate control, and we grow for the menu year-round. Top-tier structure.

N Natalie R.

★★★★★

Extended our growing season by months. The layout makes daily garden work a dream. Worth every single dollar.

D David F.

★★★★★

Took our backyard from nice to extraordinary. Hosting dinners in this at night is on another level.

M Mark B.

★★★★★

Was skeptical about the glass vs. heat retention, but it passed the test with flying colors. The picture speaks for itself.

E Emily A.

★★★★★

Stunning craftsmanship. It elevated our entire backyard landscape instantly. Absolutely in love with the finished look.

O Oliver P.

★★★★★

Spend every morning out here with coffee. Super solid structure, handles the wind easily, and looks gorgeous in the sun.

W William C.

★★★★★

Seamless assembly and incredibly sturdy frame. Gives us the ultimate year-round growing hub right in the backyard.

Discover

Our Glass greenhouses in motion

Living spaces designed to blend elegantly into your everyday life.

Trusted & Experienced 760+ Happy Customers

✦

Secure Checkout Shop with confidence - your transaction is fully protected.

✦

A Partner You Can Trust Dedicated support and a 12-year warranty - your peace of mind, guaranteed.

✦

Trusted & Experienced 760+ Happy Customers

✦

Secure Checkout Shop with confidence - your transaction is fully protected.

✦

A Partner You Can Trust Dedicated support and a 12-year warranty - your peace of mind, guaranteed.

✦

Trusted & Experienced 760+ Happy Customers

✦

Secure Checkout Shop with confidence - your transaction is fully protected.

✦

A Partner You Can Trust Dedicated support and a 12-year warranty - your peace of mind, guaranteed.

✦

Big enough for however you use it

Up to 750 sq. ft. of tempered glass and reinforced aluminum. Crafted in a bold U-shape design, this architectural statement creates an extraordinary venue. Spacious enough for serious harvests, private dining, or a signature experience for your venue’s guests.

Fresh herbs and produce, steps from the kitchen

Room for a proper dinner party, whatever the season

A working garden restaurants and venues can show off

A structure built to hold its value for decades

4mm

Tempered glass

750sq ft

Max floor area

8'9"

Ridge height

12yr

Warranty

Built Stronger - Made to Last - Designed to Grow Better

Why choose real glass

Tempered glass, a rust-resistant aluminum frame, and a weather-shedding design all engineered for lasting durability and a brighter, more protected growing environment, season after season.

Stronger than regular glass

Tempered safety glass is 7 times more impact-resistant than standard horticultural glass. If it ever breaks, it crumbles into small, blunt fragments - safer by design.

Why it matters

7x the impact strength of standard glass

Breaks into safe, blunt fragments

Lasts decades without yellowing

95%

Light transmission

Real glass passes the full spectrum of natural light without diffusion. Light-demanding plants get exactly what they need to thrive.

Why it matters

Full natural light, no diffusion

Ideal for orchids, citrus and herbs

Stays crystal clear for decades

115 mph

Wind rated

Rust-resistant aluminum framing and deep ground anchoring keep your greenhouse standing through storms, high winds, and heavy snow loads.

Why it matters

Rated for winds up to 115 mph

48 PSF snow load - about 4.5 ft of snow

Anchors to soil or concrete

Easy to install

Set up by two, in 5 to 7 days

No expertise needed. Your greenhouse comes with step-by-step illustrated instructions and only requires common household tools - and professional installation is available if you'd rather not do it yourself.

2 people minimum

5 to 7 days

Common tools only

Step 1

Prepare the base

Level the surface, set the frame and anchor it firmly to the ground.

Step 2

Assemble the structure

The uprights and roof sections click and screw together easily.

Step 3

Install the glazing

Tempered glass panels and rubber seals are set into place securely.

Step 4

Doors & windows

Hang the doors and install the opening windows. Your greenhouse is ready.

Why Prime Greenhouses

What really makes the difference

A standard greenhouse

Standard glass, thin and fragile

Lightweight frame, sensitive to wind

Short warranty, 2 to 5 years

Reduced light transmission

Little or no after-sales support

Accessories sold separately

Prime Greenhouses

Our glass greenhouses

Tempered safety glass, up to 7x stronger

Tested up to 115 mph winds and 48 PSF of snow load (about 4.5 ft of snow)

12-year frame warranty included

Up to 95% light transmission

Easy assembly, illustrated guide and real support

From Our Customers

Our Greenhouses, In Your Backyard

Thousands of gardens equipped across the US. Here are a few of them.

Greenhouse installed at a customer location

Before you decide

Is a glass greenhouse worth it?

The questions buyers ask most before spending this much.

Why it costs more

Priced like a structure, not a kit

Tempered glass, powder-coated aluminum, a 30-year lifespan - closer to a home addition than a garden accessory.

What the U-shape offers

Three wings around a sheltered courtyard

The U-shaped plan turns the middle into a protected outdoor room - you grow in the wings and gather in the courtyard, shielded from wind on three sides.

Will I actually use it

Built for every season, not just spring

Roof vents and sliding doors regulate summer heat; the frame and glazing hold warmth through winter - usable year-round, not just a photo backdrop.

How It Works

From Checkout to Your Backyard, Hassle-Free

A simple, guided journey, from the first click to the moment you start enjoying it.

You order online

Secure checkout in just a few clicks. Have a question? We'll answer it before you even buy.

We prepare and ship it

Your greenhouse is carefully packed and shipped free, anywhere in the US.

You enjoy your greenhouse

Set it up and make the most of it: a true living space you can use all year round, whatever the season.

Before you order

What's included in your shipment

In the box

Aluminum frame and structural profiles

Glass panels

Sliding door and door components

Roof window(s) for your selected size

Gutter and downspout components

Glazing seals and rubber strips

Bolts, nuts, screws & fasteners

Detailed assembly instructions

The number of roof windows depends on the size you select.

What tools do I need? (11 items)

Required tools (not included)

Rubber mallet

Measuring tape

Spirit level

PZ2 screwdriver

3/8", 1/2" & 11/16" wrenches

Cordless drill

1/8" hex key

Utility knife

Soap, for fitting rubber seals

Silicone gun and silicone

Ladder

Our story

We started building greenhouses because the ones we bought kept falling apart

Today, we design robust greenhouses built to withstand the toughest conditions and stand the test of time.

Every greenhouse is the result of rigorous work, using high-quality materials that combine strength and beauty, for hobby gardeners and seasoned growers alike.

Read our story →