The best greenhouses with base, compared.
Top pick: Bamworld 3-tier greenhouse – Highest scaled amazon.co.uk star line in the set, 4.6 from 109, at about £22.99. Best value: DIVCHI extra-wide 4-tier – Strong sub-£45 row once the top score is taken: 4.5 from 325 at about £33.29. Updated October 2026.
A greenhouse with a base on amazon.co.uk rarely means a poured concrete floor in the box. You judge a listing by footprint, cover, whether you can stand inside, and how the base can be weighted or bolted on paving versus soil. Two walk-ins share one 4.2-from-1,636 star line, so that figure is one sample. Base type, cover and anchoring are set out in the [greenhouse with base buying guide](/hub/raised-beds-greenhouses-and-compost/greenhouse-with-base/sub/greenhouse-with-base-buying-guide). The phrase usually means one of three things. A galvanised steel base rail on a polycarbonate kit, as on the lean-to. The bottom rectangle of a metal shelf frame, with feet and a skirt you bury, as on the and polyethylene walk-ins and the racks. The SG unit is a timber cold frame.
A greenhouse with a base on amazon.co.uk rarely means a poured concrete floor in the box.
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Personal buying guide
Question 1 of 2
Do you need to stand inside?
The plain Bamworld three-tier is the top pick here on the scaled score: about £22.99, 4.6 from 109 amazon.co.uk reviews, an eucalyptus frame and a polyethylene cover at 3.85 kg. UK reviewers mention gloves and a small mallet in the box, a QR video when the leaflet is thin, and shelves that take seed trays. One buyer calls it a small unit for about six trays that looks smaller than the photo, and another says it needs garden staples or it can blow over. A reviewer describes the timber as bamboo, while the bullets say eucalyptus, so the wood species is not settled on the page. The bullets also claim 22-inch shelves at 38 lb each beside a dimensions field of 32 cm by 16 cm by 44 cm. The title says winter-proof; that wording is not a test result in this file.
Pros
Cons
Best for: You want the highest-rated small timber rack in this set and will pin it down.
Less suitable: You need to stand inside, or you are buying the winter-proof line as a tested rating.
Specifications
Common questions
Does this listing include a steel base?
No. The listing describes timber legs. The bullets say eucalyptus. One review calls the timber bamboo, so the species is not settled.
What cover is listed?
Polyethylene. The title also says winter-proof. That line is not a wind-speed test in this file.
Can you walk inside?
No. It is a three-tier rack. One reviewer describes room for about six seed trays, and says the unit looks smaller than the photo.
The extra-wide DIVCHI is 105 cm by 45 cm by 160 cm at about £33.29, with a reinforced polyethylene cover, a roll-up zip door and four vents on the listing. Amazon.co.uk shows 4.5 from 325 reviews, which is the best value line in this set beside the higher-scoring timber mini. Reviewers mention clips that hold the front panel, which they prefer to ties that fail, and side pockets filled with rocks, gravel or a grow bag, plus bricks on the bottom shelf. Assembly comments are specific: if the bottom poles are not pressed fully home, the frame falls apart while you add the shelves. One buyer wanted extra ties level with the third shelf. The item-weight line again says 200 g, which you should not use when you plan how to hold it down.
Pros
Cons
Best for: You have a patio strip about 45 cm deep and will weight the pockets before a windy week.
Less suitable: You want a bolted polycarbonate house, or you will not seat the poles before loading shelves.
Specifications
Common questions
What holds this rack on paving?
The listing is metal feet plus a skirt, not a bolted steel rail. Reviewers put rocks, gravel or a grow bag in the side pockets, or bricks on the bottom shelf.
What cover is listed?
Reinforced polyethylene, with a roll-up zip door and four vents.
Can you walk inside?
No. It is 160 cm high and 45 cm deep, a four-tier rack rather than a house you stand in.
The Outsunny walk-in is a narrow house listed at 141 cm by 72 cm and 191 cm high, about £37.99 on amazon.co.uk, with 4.4 from 971 reviews. A reviewer who describes herself as a small senior put it up alone in about 90 minutes, and several people use the four shelves for pots. The same review set keeps returning to the door: ties fail after a few weeks, and one buyer said the zip and ties were only fit for a single summer of light use. The bullets include four guy ropes, four ground nails and a 10 cm skirt to bury, which is a soil plan rather than a paving plan. One review mentions a missing shelf clip that the buyer replaced with a tie. The page states a maximum weight of 15 kg, so a full set of heavy pots sits outside what the listing promises.
Pros
Cons
Best for: You want to stand in a narrow PE house on soil and will replace ties if they fail.
Less suitable: You are on paving only, or you need a cover reviewers treat as multi-year.
Specifications
Common questions
What base does the listing describe?
Metal frame feet plus a skirt. The bullets add four guy ropes, four ground nails and a 10 cm skirt to bury. That is a soil plan, not a poured floor.
What cover is listed?
Polyethylene, with a roll-up zip door. Reviews return to ties and the zip wearing out within a season.
Can you walk inside?
Yes. The dimensions field is 141 cm by 72 cm and 191 cm high. A reviewer put it up alone in about 90 minutes.
The small DIVCHI four-tier is the about £17.29 listing, sized 50 cm by 45 cm by 130 cm, with a clear PVC cover and 4.4 from 634 amazon.co.uk reviews. The title says a durable steel frame, but a UK reviewer says the parts are plastic tubes, brackets and shelves, and a bullet names PP connectors. The weight field prints 200 g, which is not a believable mass for the packed kit, so that figure should not guide you. Outdoor users put a bag of compost on the base because the rack is light, and one review says it toppled when it was not weighted. Mesh shelves bend under heavier pots, and more than one person reports a tear along the zip if the cover is handled roughly.
Pros
Cons
Best for: You want a cheap seedling rack indoors or in a sheltered spot and will weight the base.
Less suitable: You bought it because the title says steel, or you will stand heavy pots on the mesh outside.
Specifications
Common questions
Is the frame steel?
The title says a durable steel frame. A UK review describes plastic tubes, brackets and shelves, and a bullet names PP connectors. The frame material is not agreed on the page.
What cover is listed?
Clear PVC, with a zip door and one listed vent. More than one review reports a tear along the zip if the cover is handled roughly.
Can you walk inside?
No. The size is 50 cm by 45 cm by 130 cm. It is a four-tier seedling rack.
The lit Bamworld is the three-tier timber stand with a polyethylene cover plus LED strips, at about £36.99 and 4.23 kg. Amazon.co.uk shows 4.4 from 61 reviews, and this file only includes a handful of United Kingdom texts. Those texts say the lights suited a houseplant and that placing the LED strips was awkward; one reviewer mentions black marks on the shelves. The bullets describe three modes, including 48 warm-white LEDs at 3,000 K and a 660 nm setting, which is a grow light rather than a greenhouse heater. Shelf copy says each tier is 22 inches wide and rated to 38 lb, while the dimensions field prints 32 cm by 16 cm by 44 cm, so the page does not agree with itself. A comparison label says a metal skirt, but the frame material on the listing is wood.
Pros
Cons
Best for: You want a compact timber rack with grow lights for houseplants or a balcony and will check the real shelf width.
Less suitable: You need a walk-in, a heater, or a large set of UK reviews before you buy.
Specifications
Common questions
Do the lights replace a heater?
No. The bullets describe LED modes, including 48 warm-white LEDs at 3,000 K and a 660 nm setting. That is a grow light, not a greenhouse heater.
What cover and frame are listed?
Polyethylene over a wood frame, at 4.23 kg. The page does not describe a galvanised steel base rail.
Can you walk inside?
No. It is a three-tier stand. The dimensions field says 32 cm by 16 cm by 44 cm, while shelf copy says 22-inch tiers. Check the width before you buy.
The narrow VOUNOT is listed at 143 cm by 73 cm by 195 cm and about £33.49, with four shelves the bullets rate at 10 kg each and a cover described as 135 g/m² high-density polyethylene. The spec block on the same page says the frame material is plastic, while the bullets describe a painted metal frame, four ropes, four ground anchors and a skirt longer than the frame. This ASIN and the 143 cm square sibling both show 4.2 from 1,636 reviews, and the UK review opening in the file is the same, so those counts are not two samples. In that shared file, people talk about standing inside, shelf gaps unless the bars are pushed fully home, and zips or tie-downs that fail within weeks. On a concrete yard, one buyer weighed the bottom tabs after the frame tried to lift in wind they put at about 15 mph.
Pros
Cons
Best for: Your path is about 73 cm deep and you will treat the shared reviews as a family, not this width alone.
Less suitable: You need an independent review sample for 73 cm, or a frame material the page agrees on.
Specifications
Common questions
Is the 1,636-review line only for this width?
No. This 73 cm listing and the 143 cm square sibling show the same 4.2 from 1,636, and the same UK review opening. Count that sample once.
What is the frame made of?
The spec says plastic. The bullets say a painted metal frame. The page does not agree, so the table leaves the frame blank.
Can you walk inside?
Yes, on the dimensions: 143 cm by 73 cm by 195 cm. The cover is described as 135 g/m² polyethylene, with four shelves rated at 10 kg each.
The square VOUNOT is the 143 cm by 143 cm by 195 cm walk-in at about £44.49 and about 10 kg, with eight shelves the bullets rate at 10 kg each, two vents and a 135 g/m² polyethylene cover. Fastenings listed are four ropes, four ground anchors and 32 cable ties, plus a skirt past the frame. It shares the 4.2 from 1,636 star line and the same review opening as the 73 cm sibling, so those texts are not a separate sample for the square footprint. In that file, reviewers praise a mesh flap on hot days and room to stand, and they also report zips opening at the sides and tie-downs that snap. A repeated tip is to seat the shelf bars fully or the shelves will not fit. One buyer used bricks on the door hem to stop animals lifting it at night.
Pros
Cons
Best for: You have room for a 143 cm square and will weight the skirt and the door hem.
Less suitable: You are counting 1,636 reviews as proof of this size only, or you will not add weight on slabs.
Specifications
Common questions
How is this different from the narrow VOUNOT?
This one is 143 cm square, about £44.49 and about 10 kg, with eight shelves and two vents. The star line, 4.2 from 1,636, matches the 73 cm sibling and is not a separate sample.
What cover is listed?
High-density polyethylene at 135 g/m², with a zip roll-up door. The frame material on this size is alloy steel.
Can you walk inside?
Yes. Head height is about 195 cm. Reviewers in the shared file mention standing inside, and one weighted the door hem with bricks.
The SG Traders listing is a timber cold frame about 69 cm by 49 cm and 120 cm high, at about £79.99, with semi-transparent polycarbonate, three slatted shelves, two front doors and four vents. Across 220 amazon.co.uk reviews the star line is 4.2. Buyers who like it mention roughly half an hour of assembly and use it for seedlings or tender plants, and one added weights because the 7 kg frame felt light. Other UK reviews say pre-drilled holes do not line up and the dowels are unclear in the instructions, so this is a DIY timber job. A reviewer found the panels too opaque to see the plants and swapped two door panels for clear plastic from picture frames. The bullets describe pre-treated hardwood and polycarbonate, not a galvanised steel base rail.
Pros
Cons
Best for: You want a small timber cold frame on a patio and can align the holes yourself.
Less suitable: You expected a galvanised steel base, a walk-in, or a click-together cover.
Specifications
Common questions
Does this have a galvanised steel base?
The bullets describe pre-treated hardwood and polycarbonate panels, not a galvanised steel base rail. At 7 kg, one buyer added weights because the frame felt light.
What cover is listed?
Semi-transparent polycarbonate. A reviewer found the panels too opaque to see the plants and swapped two door panels for clear plastic.
Can you walk inside?
No. External size is about 69 cm by 49 cm and 120 cm high, with two front doors and four vents.
The Outsunny lean-to is the rigid kit in this set: about 192 cm wide, 127 cm deep and 214 cm at the peak, 17.3 kg, at about £157.69, with an aluminium frame, a galvanised steel base and polycarbonate panels. Amazon.co.uk shows 3.6 from 52 reviews, a small sample next to the polyethylene tents. The bullets tell you to place it against an out-of-wind wall and use the included ground bolts. UK reviewers still describe lost side panels after a day they put at about 45 mph, even behind a high wall, a roof that blew off, and a house torn apart four days after assembly. Assembly notes repeat image-only instructions, a two-person job, missing or mis-labelled parts, and panels that buyers tape or silicone because they call them thin. The sliding door is described as flimsy.
Pros
Cons
Best for: You have a sheltered wall, will bolt the steel base, and can spare two people for a fiddly build.
Less suitable: You want a movable tent, or you need a structure with a large UK review sample.
Specifications
Common questions
Does the listing name a steel base?
Yes. The bullets name a galvanised steel base and ground bolts, and tell you to place the house against an out-of-wind wall. That is a rail and bolts, not a concrete floor in the box.
What cover is listed?
Polycarbonate. Reviewers call the panels thin and describe taping or silicone. The listing does not give a panel thickness you can treat as premium glazing.
Is there a wind-speed rating?
No wind-speed rating is published here. UK reviewers describe panel loss after a day they put at about 45 mph. The star line is 3.6 from 52 reviews.
Nine amazon.co.uk listings, captured on 20 October 2026, are on this page. The number on each card scales the star line to 100, so 4.2 becomes 84. There is no wind-tunnel test and no grow-out. The top pick is the highest of those scores. Best value is a strong listing under £45 when another row already holds the top score. Shared star lines are counted once in the text. Amazon evidence is 45 points, base and cover fit is 35, and shelf price is 20.
Amazon evidence
45%The card score scales the amazon.co.uk star line. A 4.6 from 109 outranks a 4.4 from 971 on that scale. Sample size, and a star line shared by two sizes, is discussed in the text.
Base, cover and access
35%Whether you can stand inside, what the base actually is (steel rail, metal feet and skirt, or timber legs), and whether the cover is polyethylene or polycarbonate.
Shelf price
20%GBP price on amazon.co.uk. Best value is a strong row under £45 when another listing holds the highest star score.
Name the base, then the footprint. A star line is a sample size, not a wind result. A title that says base is not a concrete floor in the box.
A greenhouse with a base, in this amazon.co.uk set, is not a poured concrete floor in the box. The phrase usually means one of three things. A galvanised steel base rail on a polycarbonate kit, as on the Outsunny lean-to. The bottom rectangle of a metal shelf frame, with feet and a skirt you bury, as on the VOUNOT and Outsunny polyethylene walk-ins and the DIVCHI racks. Or timber legs, as on the Bamworld minis. The SG Traders unit is a timber cold frame.
A galvanised rail, metal feet with a bury skirt, and timber legs are the three patterns here. None of the boxes includes a poured slab. If the parts do not match a base the listing promised, section 11 of the Consumer Rights Act 2015 is the rule to know.
Ground nails and a skirt are a soil plan. On slabs, reviewers add bricks, a compost bag, or rocks in a pocket. One narrow VOUNOT tried to lift in wind a buyer put at about 15 mph until the tabs were weighted. The lean-to still lost panels in reviews after it was bolted.
The 73 cm and 143 cm square VOUNOT files share 4.2 from 1,636 and the same review opening. That is one sample. A zip left shut on a warm day is a separate mistake: the RHS cites damage risk above about 27°C without airflow.
Measure the strip before you compare star lines. A walk-in that is 72 or 73 cm deep fits a side path and gives about 191 to 195 cm of head height. The square VOUNOT needs 143 cm each way. A 45 cm patio strip fits the extra-wide DIVCHI at 105 cm long and 160 cm high, not a 127 cm lean-to. The timber cold frame is about 69 by 49 by 120 cm, so you reach in rather than stand in. Both Bamworld pages print 32 by 16 by 44 cm in the dimensions field and 22-inch shelves in the bullets.
Polyethylene is the cloth on the walk-ins and the mini racks. It rolls at a zip, and reviewers tie it down or take it off for a named storm. Polycarbonate is the lean-to and the timber cold frame. The RHS choosing guide puts polycarbonate light transmission a little under glass, roughly 83 percent versus 90 percent. That is a material note, not a thickness. Reviewers on the lean-to call the panels thin. Small houses overheat.
Three typical situations, each with a recommendation from this comparison.
You want the highest star line in this set and a rack you can carry. The Bamworld three-tier is about £22.99, 4.6 from 109 reviews, with an eucalyptus frame in the bullets and a polyethylene cover at 3.85 kg. Pin it down. Winter-proof on the title is not a test result.
You want head height on a path and you can bury a skirt. The Outsunny walk-in is about 141 cm by 72 cm and 191 cm high, about £37.99, with 4.4 from 971 reviews. Four guy ropes, four ground nails and a 10 cm skirt are in the bullets. Door ties are a wear point.
You have paving and a strip about 45 cm deep, and you will weight the pockets before a windy week. The DIVCHI extra-wide four-tier is 105 cm by 45 cm by 160 cm, about £33.29, with 4.5 from 325 reviews. Seat the bottom poles fully before you load the shelves.
Nine listings are on this page, and none was wind-tested. The Bamworld three-tier greenhouse, about £22.99, is the top pick: 4.6 from 109 amazon.co.uk reviews, the highest star line here, on a small timber rack you still have to pin down. The DIVCHI extra-wide four-tier, about £33.29, is the best value: 4.5 from 325 reviews, under £45, at 105 cm by 45 cm by 160 cm. The two VOUNOT walk-ins share one 4.2-from-1,636 star line. The lean-to is the only galvanised steel base named in the bullets, at about £157.69 and 3.6 from 52 reviews. A base in the title is not a concrete floor.
Bamworld 3-tier greenhouse
Highest scaled amazon.co.uk star line in the set, 4.6 from 109, at about £22.99.
DIVCHI extra-wide 4-tier
Strong sub-£45 row once the top score is taken: 4.5 from 325 at about £33.29.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources and amazon.co.uk listings, last checked on 20 October 2026.
This article contains affiliate links. If you buy through these links, we may earn a commission at no extra cost to you. The cards use amazon.co.uk listing data and public UK sources. They are not a laboratory test.
