Three or four ducks, and the run does the heavy lifting
The house is 16 square feet of floor. At 3 ducks that is 5.3 square feet each. At 4 it is 4. There are no roosts to take space, because ducks sleep on the floor, so every inch of that 16 is somewhere to lie down.
The run is the bigger number: 48 square feet, a 4 by 12 foot screened pen off the end wall. That is 12 to 16 square feet a duck. A duck run needs the room, because ducks work ground and carry water out with them, and a small run turns to mud fast.
If you already know you want five or more ducks, stop here and look at the 6x8 duck house. This one has no way to grow. The house is 48 by 72 inches, and the nest boxes, the drip zone and the pop door are laid out for four birds.
What the duck parts cost against a chicken coop the same size
| Design | Floor | Run | Birds | Studs | Materials |
|---|---|---|---|---|---|
| 4x6 chicken coop | 16 sq ft | 24 sq ft | 3–4 hens | 36” | $1,900–$2,450 |
| 4x6 duck house (this one) | 16 sq ft | 48 sq ft | 3–4 ducks | 48” | $2,150–$2,800 |
| 6x8 duck house | 37 sq ft | 96 sq ft | 6–8 ducks | 60” | $3,000–$3,850 |
Same floor, same number of birds, $250-$350 more than the 4x6 chicken coop. Not all of that is duck-specific. The duck house also doubles the run, from a 4 by 6 foot pen to 4 by 12, and raises the studs from 36 inches to 48. The rest is what makes it a duck house: a one-piece vinyl or EPDM floor liner, a slatted drip platform over a gravel pit, floor-level nest boxes with solid tops and curtains, and a ramp surface. That comes to 35 material line items against the chicken coop’s 28.
Figures come from each design’s own bill of materials at 2026 prices, with no waste allowance. The cost breakdown explains what sits inside totals like these.
The egg routine decides whether this design works
Most duck houses fail at the eggs, not the carpentry. This plan leans on the published nesting research harder than on anything else, and it changes how you run the house day to day.
Two boxes, on the floor, for four ducks. Each is a 16-inch cube, not the 12 by 14 inches most duck plans repeat. That smaller figure traces to one Ontario pamphlet from 1964. The size ducks chose in a controlled trial is 40 centimetres square, which is what this is.
Solid tops and a curtain. Three closed sides, a solid lid and a rubber or canvas curtain over each 10-inch entry. In the published work, ducks laid at twice the chance rate in boxes built this way, and used an open-topped box only half as often as chance. An open box is worse than none, because it takes floor space the birds would otherwise lie on.
Leave an egg in. Leaving the previous day’s egg, or a dummy, put 97.6% of eggs in that box in the trial. It is the biggest single effect in the duck nesting literature and it costs nothing.
Keep them in until about 9 a.m. In the one published timing study, 97% of eggs were laid by 7 a.m. Extension services put it at 95-98% by 9. Let them out at first light in June and you will be hunting eggs in the run.
Even so, expect roughly 20% of eggs on the floor, more in the first weeks of lay. A plan that promises otherwise is not being straight with you. The eggs come out through a hatch in the back wall at floor level, so you collect from outside and never cross the wet floor to do it.
The bedding bill is a weekly job
An open drinker puts roughly 400 ml per duck per day into the bedding on top of what the bird drinks. For four ducks that is about 11 litres a week landing on 16 square feet, on top of droppings that are over 90% water.
That is why the floor is sealed with a one-piece liner turned 8 inches up every wall, and why a 24-inch-square slatted platform over a gravel pit sits under the drinker. The slats stop at a quarter of the floor on purpose. Fully slatted floors cause skin irritation and slipping in ducks, and litter covers 76% of this deck.
The routine that follows: take caked litter out daily by the door and around the drinker, stir the rest, and strip the whole floor every 7 days. That is the single biggest lifestyle difference between keeping ducks and keeping hens. The cleaning guide covers tools and disposal.
The ramp lands in the run
The pop door is 20 inches wide, not the 12 a chicken coop gets, because ducks move as a group and crowd a narrow opening. It has a 4-inch threshold to hold bedding in and nothing higher.
The doorway sits well above the run floor once the joists, deck and threshold are stacked on the 8-inch floor clearance. On a level site the plan works the drop out at about 15-1/4 inches, which takes a ramp roughly 62-7/8 inches long at 14 degrees. It sits inside the run and takes up about 9 square feet of it. That is the awkward part of this footprint. The plan hangs the run door in the far bay so you are not squeezing past the ramp with a bucket, but on a 4-foot-wide run the ramp is still in your way.
If you can set the house on a pad so the doorway is a step-over, you get that space back and remove the most dangerous surface on the build. Wet ramps freeze, and a duck cannot grip.
Reach-in, with a big door
Stud height is 48 inches, so this is a reach-in house. The front wall carries a 30 by 46 inch access panel that swings out, which is large enough to reach every corner of a 4 by 6 floor on your knees. Weekly strip-outs happen through it.
If you would rather stand to clean, the 6x8 is a tall reach-in at 60 inches, and it costs $850-$1,050 more. For three or four ducks, the big panel is the cheaper answer. The flooring guide covers liner options if you want to compare materials.
What this design deliberately does not do
It has no pond, no plumbing and no floor drain. Water is handled with a liner, a drip platform and a routine.
It is not insulated. The 3.4 square foot vent strip under the high eave works out to about 93 square inches of free area per duck at four birds, and it stays open in every season.
And it is not a house for hens. Floor nests, no roosts and a wet zone are right for ducks and wrong for chickens. Keep both if you like, but give each their own house.