The ruling mentions "There is little caselaw interpreting this statutory definition." in regard to that question. It mentions one case where building 8 residen

The ruling mentions "There is little caselaw interpreting this statutory definition." in regard to that question. It mentions one case where building 8 residential units was a "housing development project" It then goes into the fact that the law in question refers to a "housing development project" in one of 3 ways, 2 of which definitely don't apply, leaving behind the phrase "Residential units only", which they then point "units" is plural, not singular. So perhaps.. 2 residential units would have been a housing development project.