Shropshire COunty Council have begun the process of producing a new Local Plan with a call for sites for consideration for various types of development. They are also producing the guidelines against which development will be set. This includes 2 briefing documents:

Design of New Dwellings Supplementary Planning Document Consultation | Get Involved - Shropshire Council Consultation Portal

Design of Residential Extensions and Alterations Supplementary Planning Document Consultation | Get Involved - Shropshire Council Consultation Portal