The above is a complaint about work being done after hours. The DOB inspector was not able to access the apartment twice, and left behind a LS-4.
An LS-4 "LS-4 posted" means: "DOB couldn't get access, so mailed the owner a letter asking him/her to schedule an inspection." http://www.city-data.com/forum/new-york-city/624564-what-happens-when-inspectors-dob-cant.html#ixzz33izEYbA8
If there's no more info on the DOB site: "If there's nothing at all but an LS-4, there's a chance that there was no followup, the complaint just fell into some black hole (or was "adminstratively" closed, which is pretty much the same thing), and it's still in violation." http://www.city-data.com/forum/new-york-city/624564-what-happens-when-inspectors-dob-cant.html#ixzz33izdYEDy
Or quite simply: "nothing happens. if the inspector cant gain access, then he/she can't issue a violation, because nothing was inspected. the inspector needs to have access to determine if anything is wrong." http://www.city-data.com/forum/new-york-city/624564-what-happens-when-inspectors-dob-cant.html#ixzz33izq1t9Q
As you can read, the case was not resolved but "closed."
Below is a complaint about partitions being put up, but no work permit posted. Same thing happened. The inspector couldn't gain access. Case closed.
Another complaint about no work permits posted. The inspector can't get in. Case closed.
And here's a complaint about no safety net during brick pointing work. The complaint was received 12/19/2012, but inspected only three weeks later, not being considered a Priority A matter, which gets quicker attention. By time the inspector got there, there was no brick pointing work being done. Case: Resolved.