Adjacent townhomes can share transitions or visually continuous roof sections even when ownership responsibilities differ. The physical repair boundary and the authorized scope both need to be understood. A convenient stopping point may not produce a workable detail.
What to do next
Ask the responsible property representatives to clarify scope and authority. Have the roofer explain how work meets retained neighboring sections. Keep legal responsibility questions with appropriate advisers while documenting the technical transition proposed for the project.
Related Perkins guidance
Contact Perkins Roofing to discuss your roof and the appropriate next step.