The phrase "pub house" refers to a place that combines a pub and a house. It typically means a cozy establishment where people can gather to socialize, drink, and have a good time, like a small-scale pub or tavern. Full definition
As far as pub houses go I see the shift moving toward smaller epub houses which are combining with traditional pubs, this to me seems to be the best niche. (publishingtalk.eu)
While my store is relatively new, I only carry indie authors and authors that have used small pub houses. (thebookdesigner.com)
It's a beautiful book, inside and out, and there's absolutely no way to tell that it's not from a big pub house (other than the pub name). (elizabethspanncraig.com)