Written permission obtained from the site owner or custodian

For ASI-protected sites, Form-7 permission letter required from the relevant ASI circle office

Temple / mosque / church religious authority or priest (archaka) informed and consent obtained

Local ASI circle office informed (if centrally protected monument)

INTACH state chapter notified if INTACH-listed heritage

Municipal or district authority permission obtained if public road closure required

Written confirmation of scope and deliverables issued to client or owner

Site recce walk-through completed (in person or via recent satellite imagery)

Access constraints identified — locked areas, narrow passages, high elements requiring scaffolding or aerial equipment

Safety hazards noted — unstable fabric, deep excavations, restricted chemical or biological zones

Ground Control Point (GCP) placement locations identified and accessible

Camera(s) charged and sensor cleaned

Memory cards formatted and capacity verified for full-day capture

Drone batteries charged — minimum 3 full sets for a full-day shoot

Total station or GNSS receiver calibrated and batteries charged

Measurement equipment packed — tape, laser distance meter, spirit level

Laptop with processing software installed and licence verified

Team roles assigned — lead surveyor, camera operator, safety watch, GCP team

Site safety briefing completed — emergency exits, first aid location, emergency contact numbers