...And if they're doing electrical shenanigans, who knows what else they're doing.
Like gas for instance.
Doing illegal building stuff doesn't seem like a huge deal until something goes catastrophically wrong, like that building on the corner of 2nd avenue and E 7th street in the Village.
BOOM, no more building, as well as three others destroyed, and two people dead because the owners/landlords were doing shady stuff with the gas line.

https://ny.curbed.com/2016/2/11/11029792/deadly-east-village-explosion-leads-to-manslaughter-charges