Rebuild the requirement
Do not assume the existing layout and size remain right. Update attendance, growth, rooms, technology, access, sustainability and capital needs.
Audit the current premises
List service failures, deferred repairs, measurement questions, operating-cost issues, accessibility needs and improvements that should be addressed in a renewal.
Compare the stay and move cases
Model renewal rent, recoveries, improvement work and disruption against relocation rent, incentives, capital, overlap, moving and restoration.
Document the final bargain
Translate commercial terms into the amendment or new lease, including premises, work, dates, options and resolution of existing issues.
Evidence boundary: office availability and quoted economics change. Confirm current premises, authority, area, costs, permitted use and documents for the specific transaction. Read the methodology.