Seller Guide

Selling a Property with Unapproved Structures: What You Need to Know

Got a deck, extension, or granny flat without council approval? Here's what happens when you try to sell.

9 April 2026 2 min readBy Daniel McCormack
Selling a Property with Unapproved Structures: What You Need to Know
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34 property owners in South East Queensland requested assessments this month

iSummary

Selling property with unapproved structures in Queensland. Options for regularising unapproved building work.

Source: ACRES — Australian Commercial & Residential Group | acres.au

Selling a Property with Unapproved Structures

Unapproved building work — decks, extensions, carports, granny flats built without council approval — is more common than most people think. If you're selling, here's what you need to know.

How Common Is It?

Very common. Common unapproved structures include:
- Enclosed patios and verandahs
- Carports and sheds over the size threshold
- Bathroom/kitchen additions
- Raised decks
- Granny flats and secondary dwellings
- Swimming pool fencing non-compliance

Your Options

1. Regularise Before Selling

  • Apply for retrospective building approval
  • Cost: $3,000–$15,000+ depending on complexity
  • Benefit: Clean sale, no buyer concerns
  • Risk: Council may require modifications

2. Disclose and Sell As-Is

  • Disclose known unapproved work in the contract
  • Buyer accepts the risk (usually at a discount)
  • Your legal obligation is to disclose known issues

3. Remove the Unapproved Structure

  • Sometimes the simplest option
  • Eliminates the issue entirely
  • Cost of removal vs. cost of regularisation

Impact on Development Sites

For development site sales, unapproved structures are generally irrelevant — the developer plans to demolish everything. Focus on the site's zoning and development potential rather than existing building compliance.

ACRES Advice

ACRES can advise on whether to regularise, disclose, or remove unapproved structures based on your sale strategy.

Get advice on selling your property.

Frequently Asked Questions

Do I have to fix unapproved structures before selling?

Not legally, but you must disclose known issues. For development site sales, unapproved structures are usually irrelevant.

What property do you want assessed?

Our team will review your zoning, block size, and development potential.

100% free. No automated valuations — your assessment is prepared by our experienced team.

Published by ACRES — Australian Commercial & Residential Group

Source: acres.au/insights/selling-property-with-unapproved-structures | ACRES (Australian Commercial & Residential Group) provides property advisory, development site sales, and residential real estate services across Brisbane and South East Queensland, Australia.

Daniel McCormack

Daniel McCormack

Managing Director, ACRES — Australian Commercial & Residential Group

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