Best SellerThe ClassicOur widest walk-in at 9.84 feet: a center path with full beds down both sides.From $3,090View The ClassicPolycarbonate greenhouse kits
Room for a few seed trays, or a full walk-in growing space.
Four models on the same galvanized steel frame, from 51 to 452 sq ft.
Best SellerThe ClassicOur widest walk-in at 9.84 feet: a center path with full beds down both sides.From $3,090View The Classic
The ModernStraight walls keep full headroom to the very edge of the beds and shelves.From $3,190View The Modern
The CottageThe pitched-roof silhouette, glazed in warmer 6 mm panels as standard.From $3,190View The Cottage
The MiniJust 6.56 feet wide for side yards and patios, still tall enough to stand in.From $2,990View The MiniChoosing your greenhouse
Start with the width
Width is the one dimension you cannot change later, so start there. The Mini (6.56' wide) fits side yards and patios with one bench and a walkway. The Cottage (7.71') and Modern (8.20') give you a bench down each side. The Classic (9.84') is the one most people end up with: two full beds and a center path you can turn around in. For the full reasoning: our greenhouse sizing guide.
What about the panels?
Nothing to choose here: every Greenlyhouse greenhouse is glazed in 6 mm twin-wall polycarbonate as standard, on every model and every length. Two layers with a deep insulating air gap, about 85% light transmission, UV-protected, and panels that flex under impact instead of shattering. It is the thickness that holds heat through real winters, so we fit it everywhere rather than making it an upgrade. What that means for cold-season growing: the winter greenhouse guide.
Which length?
Model lengths run from 6.56' up to 45.93' in fixed steps (the exact list varies by model). The square footage under each length on the product page is the honest way to compare. The rule we repeat all day: if you are between two lengths, go longer. Plants multiply, pots accumulate, and an extension kit later costs more than the longer size today.
Before it arrives
A greenhouse needs a flat, level base: compacted gravel, a slab, or a timber perimeter. Level ground is what makes assembly a calm weekend and keeps the door closing square for years. How to prep it: our foundation and anchoring guide. Not sure about a permit? Most backyard greenhouses do not need one, but call your local building department before you pour concrete.
What is included in the price?
The price on each page is the full kit: galvanized steel frame, twin-wall panels, door, hardware and step-by-step instructions, shipped free anywhere in the lower 48 on a pallet by freight carrier. The carrier calls to schedule a window and delivers curbside. If a part arrives damaged or missing, email a photo and we ship the replacement at no charge. For the complete picture of what each model and length costs, see the greenhouse cost guide.
How long does assembly take?
A weekend with two people for most lengths: frame on Saturday, panels and door on Sunday. Everything bolts together, pre-drilled and labeled, with no welding and no cutting. A cordless drill, a level and a stepladder cover the tool list. Longer models just add panels, not complexity.
Greenhouse kit questions, answered
Greenlyhouse kits start at $2,990 for the entry length of The Mini and scale with the model and length you choose. Every price includes the complete kit and free freight shipping anywhere in the lower 48, with all taxes included. For a full breakdown by model and size, read our greenhouse cost guide.
Yes - that is the design brief. Every model uses a galvanized steel frame rated for winds up to 112 mph and snow loads up to 49 psf when assembled and anchored as instructed, glazed in hail-resistant 6 mm twin-wall polycarbonate. Our guide on greenhouses for high winds and heavy snow explains what those ratings mean in practice.
The 6 mm twin-wall polycarbonate fitted on every model traps an insulating air layer that single-wall panels and glass do not have, which is what keeps an unheated greenhouse workable deep into cold weather. See our winter greenhouse guide for what to expect by climate.
Four widths (6.56', 7.71', 8.20' and 9.84') with lengths from 6.56' up to 45.93', which spans roughly 51 to 452 sq ft of growing space. Width is fixed per model and length comes in steps, so start from the width your space allows - our sizing guide walks through it.
We ship free to all 48 contiguous United States. Your kit leaves the warehouse flat-packed in a protective crate and travels by freight carrier; the carrier calls to schedule a delivery window and delivers curbside within 14 days of purchase.
Free U.S. ShippingSecure CheckoutProtective Crate DeliveryHelpful Support, One Email AwayFree U.S. ShippingSecure CheckoutProtective Crate DeliveryHelpful Support, One Email Away
A greenhouse that will outlast the trend.
Pick your model in a few minutes. Free shipping, and a real person on email if you hesitate between two sizes.
