What to Do When a Neighbour Builds Without Approval
A new shed, carport, retaining wall, balcony or granny flat can change sunlight, drainage, privacy and access around an Australian home. Some work may look unlawful but have approval, while other projects may breach planning rules, building standards, a development consent or a covenant on the land.
The right response is usually calm, documented and directed to the correct authority. A neighbour dispute can become expensive if allegations are made publicly or work is blocked without a legal basis. Start by identifying what has changed, checking available records and protecting any immediate safety interests.
Identify the Work and the Possible Breach
Walk around your own property and record what you can lawfully observe from public areas or your land. Take dated photographs, note when construction began, and keep copies of advertisements, messages or statements about the project. Record practical effects such as stormwater flowing into your yard, a structure crossing a boundary, unusual noise, blocked access or loss of privacy.
The issue may involve several different approvals. Planning permission controls land use, siting, height, setbacks and environmental impacts. A building permit or construction certificate concerns structural safety and compliance with the National Construction Code. A development may also be affected by a heritage listing, bushfire requirements, an easement, a restrictive covenant or owners corporation rules.
Do not assume that every small structure needs the same approval. In New South Wales, some low-impact work may qualify as exempt development, while a larger project may need complying development approval or development consent through the NSW Planning Portal. Victoria, Queensland, Western Australia and other states use different terminology and processes. A local council or private building surveyor can explain which pathway applies.
Check Records Before Making a Complaint
Search your council’s planning and building information where those records are publicly available. In Sydney, for example, a council development application may show approved plans, conditions and the responsible applicant. Melbourne residents may need to contact the relevant local council planning department, while Brisbane projects can involve council planning rules and Queensland building approval requirements. The property’s address, lot details and a clear description of the work will help staff locate the correct file.
Ask whether the work has a development application, planning permit, building permit, construction certificate, occupation certificate or inspection record. A permit displayed at the site can provide useful information, but its absence does not prove that the project is illegal. Some approvals are issued electronically or held by a private certifier rather than displayed on a fence.
Review the approved plans and conditions if you can obtain them. A neighbour may have approval for a single-storey garage but be constructing a larger two-storey building. A permit can also exist while the work departs from the approved drawings. Keep the original documents and compare them with what is being built rather than relying only on informal comments from local residents or tradies.
Report the Matter to the Right Authority
If you reasonably suspect a planning or building breach, lodge a written complaint with the relevant council. Use factual language: describe the address, the type of structure, the dates, the approval information you found and the specific concern. Attach photographs, plans or measurements where available. Ask for a reference number and keep the complaint, responses and dates in a dedicated file.
For an immediate risk, contact the appropriate emergency or regulatory service. A visibly unstable wall, exposed electrical installation, unsafe excavation or collapsing structure may require urgent attention. Call emergency services for immediate danger to life, and contact the council’s building compliance team for urgent but non-emergency safety concerns. Do not enter the building site or confront workers who may be following the owner’s instructions.
| Concern | First contact | Useful information |
|---|---|---|
| Unapproved extension, shed or dwelling | Local council planning or compliance team | Address, photographs, dates and suspected planning issue |
| Structural or construction safety | Council building department, building surveyor or state regulator | Permit details, visible defects and safety risks |
| Boundary, access or encroachment dispute | Property lawyer or licensed surveyor | Title plan, survey, measurements and photographs |
| Excessive construction noise or work hours | Local council or state environmental authority | Dates, times, duration and type of noise |
| Stormwater, erosion or contaminated runoff | Council drainage or environmental team | Weather dates, flow path and damage evidence |
| Shared property or strata issue | Owners corporation, strata manager or body corporate | By-laws, meeting records and affected common property |
A complaint may lead to an inspection, information request, order to stop work, infringement notice or enforcement proceedings. It may also lead to a finding that the work is permitted. Either result is more likely when the complaint is precise and supported by evidence.
Protect Your Property and Legal Position
Construction can affect private rights even when planning approval exists. A permit does not generally authorise a neighbour to build over your boundary, damage your land, interfere unreasonably with drainage or enter your property without consent. Boundary disputes often require a registered surveyor because fences, hedges and old retaining walls are not reliable indicators of the legal boundary.
Keep invoices and evidence of damage if water enters your property, foundations crack or landscaping is destroyed. Notify your insurer promptly if there is building damage, while avoiding admissions about who is responsible. A solicitor can assess negligence, nuisance, trespass, an easement breach or a claim under state property legislation. In some cases, a formal letter may resolve the issue before court action becomes necessary.
Try to keep communications civil and in writing. A short message asking for the approval details may be appropriate, but do not threaten, trespass, remove materials or obstruct access. If the property is in a strata scheme in Sydney, Melbourne or another Australian city, the owners corporation may have separate authority over common property, external changes, balconies and waterproofing. Its by-laws and dispute-resolution process should be checked alongside council rules.
Choose a Proportionate Next Step
The most effective path depends on the harm. A minor visual concern may be resolved by checking plans and speaking through a strata manager or council officer. A building that blocks a required fire path, directs water into your home or creates an unsafe excavation deserves faster escalation. Separate urgent safety issues from disagreements about appearance, views or property value.
For a private dispute, consider a property solicitor, community legal centre, state legal aid service or a low-cost mediation pathway. Lawyers can help with title searches, survey evidence, letters of demand and applications for an injunction. Court proceedings should not be the first move unless delay could cause serious or irreversible harm, because legal costs can be significant in the Australian property market.
Before choosing a response, weigh the evidence, likely remedy and cost. The same disciplined habit of checking probabilities rather than acting on assumptions appears in a concise Texas Hold’em strategy guide, although a construction dispute requires legal and technical advice rather than a game-based decision. Establish what outcome you need: stopping unsafe work, correcting drainage, preserving access or obtaining compensation.
Free and reliable legal education can help you understand unfamiliar terms before meeting a professional. NOMCENTAR’s legal information magazine provides a useful example of accessible public-facing legal material, while Australian residents should confirm the applicable rules with their own council, state regulator or adviser. Acting early, preserving evidence and using the correct complaint channel usually offers a better chance of resolving an unauthorised structure without turning a neighbourhood problem into a prolonged personal conflict.