Construction claims or defective material claims are usually very well suited for class action treatment.  It is common that builders use substantially similar process for constructing multiple homes within a development.  Frequently, a developer, builder, subcontractor or other legal entity may construct thousands of homes with the same or substantially similar defect.  The owner of the real estate development company or the general contractor will use the same subcontractor to install the sheetrock, plumbing, electric, concrete and in fact the entire frame might be built by a subcontractor.  Frequently, the construction of the home varies than what is required in the plans and/or the local ordinances.

The following are common construction defects:  leaking roofs; failing roofs; inoperable windows; leaking windows; cracking windows; cracking concrete; unlevel concrete; failing walls; cracking walls; bowing walls; defective sheet-rock; defective plumbing; defective electrical equipment and quite frequently all of the aforementioned might be installed in violation of local codes or ordinances.  This could potentially be due to the negligence of the local housing inspectors for which there is no remedy.  In New Jersey, inspectors are exempt from lawsuits for improper or negligent inspection.
There are many examples of construction defects, class actions which are currently filed and/or been settled.

There has been an extensive issue with regard to the installation and defects of Sheetrock manufactured in China.  Other type of construction defects can be design deficiencies, material deficiencies and construction deficiencies or subsurface or geotechnical problems.  Some companies have been named in class actions.