"Mickey" is grafting away on the building site when "Minnie" arrives with his lunch box. A series of mishaps get him in trouble with his boss but luckily the hooter goes and he can spend his break with her. Except, well the foreman has designs on her too - and soon the mice are desperate to escape his clutches. I'm not quite sure why it's got this title - there's not really much building going on; indeed quite the reverse as our loved-up pairing engage in some animated slapstick antics with "Pegleg Pete". The animation delivers this quite creatively destructive story quite amiably, imbuing many of the tools with human qualities (and faces) and we've even a kiss at the end. I'm not sure I'll recall it for long, but it's watchable enough for seven minutes.