I am a Residential Home Designer... is there a LEED certificate that applies to this?

Residential buildings are certified following the USGBC LEED for Homes rating system USGBC.org-LEED-Rating Systems-Homes). Building are USGBC-LEED certified by the Green Building Certification Institute (GBCI.org) and Building Professionals are accredited after passing either of two level exams (LEED GA and AP with specialty). Visit GBCI's website and look under Professional Exams. Home builders and residential design professionals usually seek the highest level of accreditation through LEED for HOMES specialty exam. In addition during the home certification process the construction is policed (inspected) by an accredited LEED-H "green rater". This is a technician that conducts performance tests to ensure the thermal fitness of the envelope of the building. Is a challenging process but a rewarding one as well.

Hope this answers your question.