Construction Digital Twins for Existing Buildings
Build a useful record of a building that has changed since the original drawings, without waiting for a perfect model.
Before planning work on an existing building, a construction team has to account for renovations, temporary repairs and missing handover records. A single drawing rarely captures all of those changes.
Begin with a defined use case
Decide whether the team needs to plan a renovation, locate services, document defects or prepare maintenance handover. Capture the rooms and systems relevant to that decision first. Mark missing information rather than filling gaps with assumptions.
Bring old and new evidence together
Connect available plans, site photos, equipment IDs, surveys and technician notes to a consistent location structure. Give each record a date and source. If a condition is safety-critical or concealed, confirm it on site with the right specialist before relying on it.
Keep the record alive through handover
Update the twin as work reveals new conditions, and make the final record available to the operator. A phone-created visual twin can be a practical starting point for smaller buildings where a detailed BIM model does not exist. GuideMeAR’s construction approach focuses on the site knowledge people need later.