And, they generally bring forth action when a neighbor files a complaint and the fines/remedies can be painful. 

and I think there are several remedies to resolve this - and the developer and the city's business/permitting services both have liability here. 

I rebuilt it in 2005-2006 and did a total rehab and massive mold remediation.

If so, you might also be able to assert they are responsible for remediation.

That ours is 3/4 inch out suggested settling since the warranty passed and/or a serious enough issue to remedy. - Drainage patterns and erosion around the foundation were consistent with the settling we saw, suggesting the slab foundation had been continuously undermined throughout the 23-year life of the house. - We plan on holding the property as a long-term rental, and the amortized cost of the repairs is marginal.

Also client is not responding to phone calls/emails.In the mean time, what else can I do to remedy the situation?

Unjust enrichment is an equitable remedy.

So we often have to remediate this and touch paint.

The foundation is so bad the house has shifted and I’m going to be spending nearly 40-50k to get this remediated.

The overall experience was ok, I think the Morris group realized that partnering with new construction groups is a cleaner approach rather than selling dilapidated properties and trusting rehab teams to remediate the property in earnest.