Explainer
MBIS and major works
A works notice can be the most expensive line item nobody mentions.
Updated 14 Jul 2026 · Part of Guides
Direct answer
A mandatory building inspection (MBIS) or major works notice can mean near-term cost and disruption. Tudi surfaces these flags so you can price them into the deal.
What MBIS covers
Mandatory building inspections target older buildings and can trigger repairs. The notice itself tells you what is planned — and what it may cost.
How works change the budget
Major works can add a special levy on top of the purchase price. A flat that looks like a deal on Guide can still be expensive once the works land.
What to ask the agent
Ask for the latest inspection report, the works timeline, and the estimated per-flat share before you make an offer.
Find the works flags
Search an estate and check the risk list
Educational — not legal advice.