Dangerous settling and cracking?!
Our 3 story brick building is showing cracks, inside and out and in concrete basement floor, and other evidence of movement, such as doors dragging and deadbolt locks out of alignment. Our neighbor is excavating to build on the empty lot next door. We insisted on crack monitors and when we received the first report from the readings, two of the monitors were replaced because readings are said to be "inaccurate" due to "excessive deflection during curing of epoxy". These two monitors showed about a 1mm vertical shift before they were removed. (I've attached a photo of one crack)
Of course we are very worried that the building structure is compromised. But also that the neighbor is trying to cover up any damage by removing the monitors. They also conducted a "preconstruction" survey about a year after they started work, showing the cracks and pronouncing them as "preexisting". We have photos showing the progression of the damage and a diary of the work being done on each date.
I welcome any thought but have two specific questions:
One, how much settlement is normal. A 1mm shift doesn't seem too much, but we don't know. It is a soft earth location (landfill).
Two, If anyone knows of an affordable structural engineer, or lawyer, website or other source of professional advice, we would be very grateful!
Thanks in advance for your help!