Lady Plumtree refers to her husband variously as "Leopold," "Ambrose," and "Leopold Ambrose" due to two different versions of the script.
The real maid and butler discuss cleaning the house before it's leased to new tenants while Colonel Buckshot is away on a hunting trip. The butler says, 'Oh, lets enjoy the weekend. We'll do it on Monday.' Later, Lord Plumbtree asks Ollie when is Agnes's day off. Agnes (Stan) answers, 'Tuesday', and Lord Plumbtree says, 'But today's Tuesday.'
Lord Plumtree has a handkerchief in his top pocket which, throughout the film, goes from barely being visible to hanging halfway down his jacket.
When Laurel and Hardy ride the bicycle for two into the train tunnel, they meet a train and come out the other end of the tunnel on two unicycles. The would not have had the materials or the tools to properly configure two working unicycles.
Although the house is owned by Col. Wilburforce Buckshot, the wrought-iron front door is embellished with a large S.
Colonel Buckshot's (James Finlayson's ) mustache changes greatly between his first appearance at the beginning and his return (at about 22 minutes), evidence that this was a prop.
In a few scenes, the back of Stan's neck is clearly not made up.
Going by the story line, it takes place over one or two days. Then again, it seems only a short time, as the police are still waiting outside the house.