Although she isn't there every day of the week, Jan spends as much time at the school as possible.

CNN: STORY HIGHLIGHTS

"We watched for a couple of contractions while this happened and I said to Dave, 'We need to get somebody in now because she isn't happy in there', " she explained.

BBC: Imogen Skelcher

When a fence isn't there, she says, "potential buyers instantly start calculating the cost" to build one.

WSJ: Shared Backyards: Advice for Homeowners on Removing Fences to Create Bigger Gardens, More Space