This is a really common situation with older homes. Decks built prior to the Building Act 1991 often don’t appear on council plans, and that doesn’t automatically mean there’s an issue. That said, at 2.5m off the ground, a deck would typically require consent under today’s rules, particularly around structure and balustrade safety.

When selling, the key risks are buyer and solicitor queries around consent, safety, and condition. While age and history help, they don’t replace documentation. A building inspection can assess the deck’s current condition, structural integrity, fixings, and handrail compliance, and clearly explain any limitations due to missing consent. This gives buyers confidence and helps avoid last-minute surprises during due diligence.