Assess the space
Note roosting ledges and open elevations across the building, not only one apartment.
Choose the right materials
Ask about mesh span, exposure and durability for exterior-facing coverage.
Plan the installation
Coordinate facade access and fixing permission with the building management.
Keep it in good condition
Include periodic edge inspections in the building's upkeep plan.
Questions for your site visit
Request a marked-up plan showing coverage, fixings and future maintenance access.