Take a similar approach and engage with them....again within reason.90% of the time, if not more I bet these people deal with angry, rude, impatient and unreasonable citizens who are mad at them for a citation or just because they exist.

Did not provide you with a citation, 3.

"violations and citations"?

If the police found wrongdoing, they would take action against you for violating a law, including writing you a citation, arresting you for a felony or a misdemeanor, or writing a report listing you as a suspect, in which case a detective most likely would be contacting you.Like others have posted, ensure your own safety first.

A friend of mine bought a house a few months ago and last weekend an inspector knocked on their door on a Saturday and issued a citation for unpermitted work.

The only citation that could be issued would be for a blocked driveway, but DPT does requires the individual reporting the blocked driveway to show proof of access to the building garage which is usually evidenced by opening the garage door.Two parting thoughts for you. 

This is the first time I got a notice from city and it's already a citation.

[citation needed]After graduating in 1984, Cramer's plans to become a prosecutor were dashed when he was denied employment with the Office of the United States Attorney for the Southern District of New York, headed at the time by Rudy Giuliani, because his law school grades were deemed not good enough.[3]Cramer was admitted to the New York State Bar in 1985 and his current status with the NY Bar is "delinquent".[6][edit] InvestorCramer obtained employment in 1984 as a stock broker in Goldman Sachs' Sales & Trading department.

It is how you leverage that platform, how you apply your SEO, and how credible you are.Ultimately it is not backlinks, not citations not anything other than CTR, Bounce rate and time on page.

Or report the tenants to the proper department.If there are consequences when they are reported, then after numerous warnings & citations they may move.