Hello everyone! I've done lots of digging in this forum but I have seen very conflicting information on the subject so I thought I would ask. I have read everything from 3 to 25 SqFt per duck for the duck house. I understand the variances for when they have access to fields of green grass and ponds versus a small area, but that's a HUGE difference. My husband and I are taking a trip to get the supplies for our duck house this weekend so I am a little short for time on coming up with a size. Thankfully I do have a design already. The ducklings have not hatched yet and will be in the brooder (in our home) until of age, especially as we have had (still having) a crazy winter. We just want to give ourselves plenty of time for the build and according to my husband my crazy paint scheme. As far as wide open spaces go they will have plenty of space (we have 40 acres) for their "run" I just want the option to add more ducks and use the same house in the future without having to add/rebuild every year or two. Starting out with 10 or 11 WH, this of course being optimistic that they will all be very healthy and see laying age and years after.