Well, My loft is 8X16. Brian and Jodi have pigeons too. Theres all kinds of ways to build them But My concern is how you're gonna make the birds stay on the ground until the dogs shew them up and away. Once you open the basket (or box or whatever) the birds will take to flight. My loft is set up for racing but I dont race them any more.Brian IS racing his birds, and Jodi keeps pigeons more like i do but her loft isnt designed for racers.(As far as I know, jodi :) ) Mine and dads first loft we built together was just a little bigger than a closet....You could walk in, turn around, look at the birds and walk out. There were also nest boxes for about 8 pairs of birds. Now, I have a loft with enough nest boxes for 44 pairs of birds( this doesnt mean I have that many breeding pairs using the nest boxes though...Sometimes they just raise youngsters right on the perches or on the floor and ignore the nest boxes for that matter. Just remember, the more space the birds have, the more poop you have to pick up..The more poop left on the floor, the more chances of disease.( I lost about 25 to 30 birds recently, and I think that was due to too much poo for too long of a time). Also, the bigger the loft the more you have to chase the birds to catch them.
I'll post a pic of my loft, inside and out, if I can remember tomorrow!..Just dont pay any attention to the poo on the floor. At least its only an inch deep!