Chicken coops for 20 chickens
Twenty standard hens need 80 square feet of coop floor. Nothing we measured that is sold as a coop reaches it, and this page explains what to do instead.
We have not handled these coops, and we do not pretend to have. Here is what we did instead. Links to Amazon earn us a commission at no extra cost to you - disclosure.
| # | Coop | Best for | Honest count | Price |
|---|---|---|---|---|
| 1 |  HERBAN Large Metal Walk-In CoopTop pick128.4 sq ft, all-around hardware cloth, and no bird-count claim to correct. The most enclosure per dollar here. | A genuine walk-in enclosure | 32no claim made | Check price#ad |
| 2 |  Amopatio Metal Walk-In Run with Perch65.3 sq ft with a roosting perch fitted and a security lock. No bird count claimed, correctly. | A walk-in run with roosting already solved | 16no claim made | Check price#ad |
| 3 |  Pawpuler 135.7" Extra Large Coop with Run59.5 sq ft, which is fourteen hens rather than the fifteen claimed - the closest near-miss on this site. | A flock in the low teens | 14box says 15 | Check price#ad |
| 4 |  PawHut 147" Extra Large Wooden Hen House51.6 sq ft against a claim of eight to ten hens. It is the only coop on this site with real headroom over its own marketing. | The rare coop that beats its own claim | 12box says 10 | Check price#ad |
| 5 |  VEVOR Metal Walk-In Run, Spire Roof43 sq ft under a spire roof - the pitched cover is the reason to pick it over a flat-topped run. | Shedding snow and rain off a run | 10no claim made | Check price#ad |
This page is going to talk you out of something, so it is worth being direct about it up front. Twenty hens need 80 square feet of enclosed coop floor. The largest coop in our research pass has 51.6 square feet of published footprint, and that figure includes its attached run.
There is no flat-pack coop on this list that houses twenty birds. Anything advertised as doing so is either measuring the run as coop, or measuring nothing at all.
What twenty hens need
| Requirement | Figure | Where it comes from |
|---|---|---|
| Coop floor | 80 sq ft | 4 sq ft per bird |
| Run floor | 160 sq ft | Roughly double the coop figure |
| Roost bar | 160 in | 8 in of bar per standard hen |
| Nest boxes | 5 | One per four hens |
Eighty square feet is a 8ft by 10ft building. That is a shed, not a coop, and treating it as a shed problem rather than a coop problem is what makes the whole thing tractable.
The route that actually works
- Use a shed or outbuilding as the henhouse. Eighty square feet of floor, standing height, a door you can walk through, and walls you can cut proper ventilation into near the roofline.
- Attach a large walk-in run, secured with half-inch hardware cloth rather than the chicken wire that comes with most kits. See hardware cloth against chicken wire.
- Fit roosts at 8 inches of bar per bird - 160 inches total, which is a little over 13 feet, usually as two or three parallel bars.
- Fit five nest boxes, wall-mounted so they do not eat floor area.
- Ventilate at the roofline, well above the birds. At twenty birds the moisture load is substantial and it is the thing that will cause you problems, not the cold.
The largest enclosures we measured
| Coop | Published size | Floor area | Maker says | Arithmetic says |
|---|---|---|---|---|
| HERBAN Large Metal Walk-In Coop | 157.2"L x 117.6"W x 76.8"H | 128.4 sq ft | no claim | 32 hens |
| Amopatio Metal Walk-In Run with Perch | 79"L x 119"W x 79"H | 65.3 sq ft | no claim | 16 hens |
| Pawpuler 135.7" Extra Large Coop with Run | 135.7"L x 63.11"W x 62.5"H | 59.5 sq ft | 15 hens | 14 hens |
| PawHut 147" Extra Large Wooden Hen House | 146.9"L x 50.6"W x 73.6"H | 51.6 sq ft | 10 hens | 12 hens |
| VEVOR Metal Walk-In Run, Spire Roof | 78.72"L x 78.72"W x 78.72"H | 43 sq ft | no claim | 10 hens |
Floor area is the maker’s published footprint. Where a unit includes an attached run that figure spans the run too, which makes it a generous reading - the enclosed roosting floor is smaller still. How we work these out.
The metal walk-ins at the top of this table are runs, not coops - none of them contains an insulated henhouse, and birds cannot roost in a bare run overnight safely in most climates. What they are good for is the second half of the setup: a large, secure, hardware-cloth enclosure attached to a shed.
Top pick · A genuine walk-in enclosure
HERBAN Large Metal Walk-In Coop
128.4 sq ft, all-around hardware cloth, and no bird-count claim to correct. The most enclosure per dollar here.
What the numbers say
157.2in x 117.6in = 128.4 sq ft of whole-unit footprint, which includes the attached run and is therefore generous. At 4 sq ft per standard hen that is 32 birds. The maker publishes no bird count of its own to compare against.
Figures from HERBAN published specifications (Amazon listing) · 157.2"L x 117.6"W x 76.8"H · Galvanized steel
128.4 sq ft is the largest ground area on this site by a wide margin - more than twice the next biggest.
HERBAN publishes no bird count, which is the correct choice for a run: capacity depends on the henhouse you put inside it, not on the enclosure.
All-around hardware cloth rather than chicken wire is the specification that matters. Chicken wire keeps chickens in; hardware cloth keeps raccoons out, and they are not the same job.
Good
- Hardware cloth all round, not chicken wire
- 76.8in height is a true walk-in
- No inflated bird claim - correctly sold as an enclosure
Not so good
- It is a run, not a coop - you still need a henhouse
- 13ft x 10ft needs serious yard space
- Assembly is a substantial job
Skip this if: you expected a coop. There is no insulated, enclosed house in it, and birds cannot roost in a run overnight safely in most climates.
Pick 2 · A walk-in run with roosting already solved
Amopatio Metal Walk-In Run with Perch
65.3 sq ft with a roosting perch fitted and a security lock. No bird count claimed, correctly.
What the numbers say
79in x 119in = 65.3 sq ft of whole-unit footprint, which includes the attached run and is therefore generous. At 4 sq ft per standard hen that is 16 birds. The maker publishes no bird count of its own to compare against.
Figures from Amopatio published specifications (Amazon listing) · 79"L x 119"W x 79"H · Alloy steel
65.3 sq ft of ground with 79 inches of headroom - comfortably walk-in for most people.
Amopatio claims no bird count. As with the HERBAN, that is right for an enclosure and it means there is nothing here to correct.
The split door is more useful than it sounds: it lets you get in with both hands full without a bird getting past your ankles.
Good
- Roosting perch included
- Split door genuinely helps daily access
- Security lock fitted as standard
Not so good
- A run, not a coop
- Alloy steel needs the coating kept intact to resist rust
- Large footprint for a suburban yard
Skip this if: you need overnight predator security on its own. A run is a daytime enclosure; birds still need a lockable house inside it after dark.
Pick 3 · A flock in the low teens
Pawpuler 135.7" Extra Large Coop with Run
59.5 sq ft, which is fourteen hens rather than the fifteen claimed - the closest near-miss on this site.
What the numbers say
135.7in x 63.11in = 59.5 sq ft of whole-unit footprint, which includes the attached run and is therefore generous. At 4 sq ft per standard hen that is 14 birds, against a claim of 15.
Figures from Pawpuler published specifications (Amazon listing) · 135.7"L x 63.11"W x 62.5"H · Wood, PVC and asphalt
59.5 sq ft supports fourteen standard hens. The listing claims ten to fifteen, so the top of its range is one bird optimistic and the rest of it is sound.
A one-bird overstatement is a rounding difference, not a misrepresentation. Most of this category is out by three to seven.
The 63in depth is the second-best on this site and it is what carries the floor area. Long, narrow coops of the same length would land nearer 35 sq ft.
Good
- Only one bird short of its own top claim
- 63in depth gives a wide, usable floor
- Asphalt roof over a PVC-protected frame holds up outdoors
Not so good
- Fifteen is optimistic; fourteen is the honest ceiling
- 11ft of yard needed
- Heavy build - plan the position before assembly
Skip this if: you actually need fifteen birds housed. Buy for fourteen or step up, because the difference shows up as pecking in February, not in the first week.
Pick 4 · The rare coop that beats its own claim
PawHut 147" Extra Large Wooden Hen House
51.6 sq ft against a claim of eight to ten hens. It is the only coop on this site with real headroom over its own marketing.
What the numbers say
146.9in x 50.6in = 51.6 sq ft of whole-unit footprint, which includes the attached run and is therefore generous. At 4 sq ft per standard hen that is 12 birds, against a claim of 10.
Figures from PawHut published specifications (Amazon listing) · 146.9"L x 50.6"W x 73.6"H · Fir and plastic
51.6 sq ft of whole-unit footprint supports twelve standard hens at 4 sq ft each. PawHut claims eight to ten. It is the only coop in this research pass that under-claims.
That matters more than it sounds. Every other maker here is asking you to trust a number that its own dimensions contradict; this one leaves you room.
At 73.6in tall it is genuinely walk-in at the run end, which changes daily keeping more than any feature on the spec sheet.
Good
- Beats its own claim - 12 hens of floor against a claim of 10
- Walk-in height at the run end makes cleaning tolerable
- Large enough to be the last coop you buy for a while
Not so good
- 12ft of yard is a real commitment
- Fir and plastic, so expect maintenance
- Assembly is a long afternoon with two people
Skip this if: your yard cannot give up a 12ft run of ground, or if you are keeping three or four hens - you would be heating and cleaning space nobody uses.
Pick 5 · Shedding snow and rain off a run
VEVOR Metal Walk-In Run, Spire Roof
43 sq ft under a spire roof - the pitched cover is the reason to pick it over a flat-topped run.
What the numbers say
78.72in x 78.72in = 43 sq ft of whole-unit footprint, which includes the attached run and is therefore generous. At 4 sq ft per standard hen that is 10 birds. The maker publishes no bird count of its own to compare against.
Figures from VEVOR published specifications (Amazon listing) · 78.72"L x 78.72"W x 78.72"H · High-carbon steel
43 sq ft in a perfect square, which is the most efficient shape for a given perimeter of frame.
The spire roof is the differentiator. Flat-covered runs pool water and collapse under wet snow; a pitched cover sheds both.
No bird count is claimed, which is correct for an enclosure.
Good
- Pitched roof sheds snow and standing water
- Square footprint is frame-efficient
- Security lock included
Not so good
- A run, not a coop
- Cover material will degrade before the frame does
- 6.5ft square is smaller than it sounds once a henhouse is inside
Skip this if: you get heavy snow loads. A spire helps, but no fabric-covered run is a substitute for a rigid roof where snow sits.
- Coops for 12 chickens - the largest size class with real off-the-shelf options
- Walk-in coops and runs - the enclosure half of the setup
- Ventilation - which matters more at this flock size than at any other
- Permits and zoning - twenty birds crosses local limits in many places
Questions people actually ask
+How big does a coop need to be for 20 chickens?
+Is there an off-the-shelf coop that holds 20 chickens?
+Can I use a shed as a chicken coop for 20 birds?
+How much run space do 20 chickens need?
+How many nesting boxes for 20 chickens?
+Do I need a permit for 20 chickens?
Sources
Read next
Chicken coops, sized by the tape measure
The main hub: flock-size roundups from four hens to twenty, each with the capacity arithmetic shown.
Chicken coops for 12 chickens
Twelve hens need 48 sq ft. Only two coops we measured reach it, and both are walk-ins.
Walk-in chicken coops that are actually walk-in
Walk-in coops and runs ranked on measured area, with a clear split between enclosures that include a henhouse and those that do not.
Ventilation, not insulation
Why sealing a coop causes frostbite, where vents belong, and how to tell whether yours has enough.
Hardware cloth against chicken wire
Why hexagonal chicken wire fails, what gauge and aperture to buy instead, and how many feet a typical coop actually needs.
Permits, zoning and the questions to ask first
What to ask your city, county and HOA before buying a coop, and why nobody online can tell you the answer for your address.