Concrete Analysis | Understanding the risks of unauthorised building works before buying or renting property in Hong Kong
- As additions or alterations may affect the safety of a property and may render the title defective, agents should inform their clients of any such orders registered against the property and the risks involved

According to the Buildings Ordinance, additions or alterations to buildings made without the prior approval of the Building Authority may constitute unauthorised building works (UBW) and it may issue an order requiring the property owner to demolish/alter the UBW within a specified period.
In most cases, the building order will be registered at the Land Registry against the property. Undischarged building orders are encumbrances on the property.
In view of the fact that UBW may affect the safety of a property and may render the title defective, property agents should inform their clients of any such orders registered against the property and the risks involved. They should also advise their clients to seek legal and professional advice before proceeding with the transaction of such property.
I would like to share a case regarding building orders so as to remind both property agents and consumers the importance of acknowledging the undischarged building orders registered in the Land Register.
In the case, the estate agent did not inform her purchaser client that the property had four undischarged building orders registered in the Land Register even though she knew about it during the viewing of the property by the client. Before signing the provisional agreement of sale and purchase (PASP), the client read the land search record and found the four undischarged building orders.
He asked the agent about them and in response, the agent told him that those orders were about general building maintenance. However, one of the orders was actually about the property being classified as a “Dangerous Building”. Moreover, the agent neither informed the client about the risk of purchasing this property with these building orders nor advised him to seek legal advice before signing the PASP. Later, the purchaser found out the truth from his lawyer and then lodged a complaint with the Estate Agents Authority (EAA).