As previous mentioned, don't take 1st no for a final answer from City Council
Building and Code Enforcement is touted by the local admin here
http://www.townofwarwick.org/departments/building.shtml
Have their own codes and wording included in correspondence to the Town Departments. Suggest you start with the Supervisor's office here http://www.townofwarwick.org/departments/depts.shtml
And follow up within a few weeks, keeping a positive demeanor and cooperative attitude while also subtlety indicate you will not easily go away until the issues are addressed and corrective action taken.
Building & Planning Depts. would also be suggested areas to contact and document personnel who should be involved in code enforcement. Don't forget to verify NY State codes too - again - as
the Warwick website claims to comply and enforce those state codes.
The loose siding and exposed building tarpaper certainly may provide a safety hazard in high winds, etc. that is one angle to be used, besides the aesthetics and resale values in your neighborhood.
http://ecode360.com/11144245#11144245
"Fire Prevention and Building Code Administration" may offer you more opportunities
http://ecode360.com/11144583
Are your neighbors related to anyone on the local council, building, planning, etc.?
This may turn into a Civil Court matter where you have to appear face-to-face against your neighbors. Is it worth that? Will it potentially escalate into a more serious adverse relationship right outside your bedroom windows (for example)?
Don't loose your cool. Play it smart, be patient. Document each and every person you speak to; Name, Title, Contact info, Date, Time, Discussion.