Updated October 2026
CM Law’s Ultimate List: Top 50 FAQs on Buying a Residential Investment Property #41. Legal Compliance
When purchasing a residential investment property, legal compliance is crucial for protecting your investment and managing it effectively. Zoning, building approvals, safety requirements and tenancy laws can all affect whether you can use the property as intended. Failing to investigate these matters can lead to rectification costs, disputes, fines and lost rental income.
In NSW, compliance starts before exchange and continues throughout ownership. A property advertised as an investment is not necessarily approved for every proposed use. Check the documents, inspect the building and budget for the obligations that come with becoming a landlord.
1. Check zoning, title and permitted uses
Start with a current section 10.7 planning certificate. It identifies relevant planning controls and matters such as flood, bushfire and contamination constraints. Ask your lawyer to review the title, easements and restrictions as well. A planning certificate does not establish that every existing structure has been approved.
Do not rely on the zoning label alone. The NSW Low and Mid-Rise Housing Policy has changed development opportunities on eligible residential land, including some R2 land. State policies, local controls and site exclusions must be considered together.
If your rental forecast depends on a granny flat, converted garage, subdivision or additional dwelling, obtain specific planning advice before committing. An agent’s description or a neighbour’s approval does not establish what is lawful on your property.
2. Verify building approvals and safety standards
Compare the physical property with approved plans. Request the development consent or complying development certificate, relevant construction documentation and occupation certificate where required. Investigate extensions, enclosed balconies and rooms converted from non-residential uses. A building inspection helps assess condition; it does not replace checking the approval history.
The National Construction Code requirements applying in NSW depend on the work and applicable approval arrangements. As at 20 October 2026, NSW uses NCC 2022 Amendment 2, with NCC 2025 adoption scheduled for 1 May 2027. An older dwelling is not automatically required to be rebuilt to every provision of the newest code. Existing safety duties, repair obligations and any upgrade orders still matter.
A building information certificate is not development consent or an occupation certificate. Do not assume it retrospectively approves unauthorised work. Ask your lawyer and building consultant what a missing approval means for your intended use, future alterations and exposure to enforcement.
3. Understand when BASIX applies
BASIX sets water, energy and thermal-performance requirements for relevant residential development. It applies to new dwellings, alterations and additions costing $50,000 or more, and swimming pools with a capacity of 40,000 litres or more. Required commitments form part of the approval process and need to be implemented.
Buying or leasing an existing home does not, by itself, require a new BASIX certificate. For planned renovations, check the requirements with your designer or certifier before finalising the scope and budget.
4. Provide a safe, habitable rental property
The NSW minimum rental standards cover structural soundness, lighting, ventilation, utilities, plumbing, water and private bathroom facilities. These standards must be maintained during the tenancy. A property may still be unfit to live in because of other serious problems, even if it satisfies those seven requirements.
Follow the smoke alarm requirements, including annual checks and generally repairing or replacing a faulty alarm within two business days after becoming aware of the problem. Particular arrangements apply where the owners corporation maintains alarms. Keep service records and confirm who is responsible.
Where there is a pool, check pool safety and certificate requirements before leasing. The requirement to give tenants a compliance certificate or qualifying occupation certificate has an exception for strata or community schemes with more than two lots; pool safety obligations still apply.
5. Get the tenancy documents and bond right
Use the current standard residential tenancy agreement, complete the condition report and provide the Tenant Information Statement. Disclose prescribed material facts and supply strata by-laws where applicable. The Landlord Information Statement explains these requirements.
A rental bond is generally capped at four weeks’ rent. Offer Rental Bonds Online before accepting it. If the landlord receives the bond directly, it must be lodged within 10 working days. An agent’s deadline is 10 working days after the end of the month in which the bond was paid. These are different deadlines, so identify who actually received the money.
6. Apply the current rental-law changes
The NSW rental reform timeline records several changes relevant to investors:
- Since 19 May 2025, landlords need a valid legal ground to end a tenancy, including at the end of a fixed term. Check notice, supporting-document and re-letting restrictions.
- Rent increases are limited to once every 12 months, subject to the applicable agreement and notice requirements. Offer approved electronic bank transfer and, from 2 March 2026, Centrepay without passing on payment fees. Centrepay registration is required when a tenant chooses it.
- Domestic violence reforms commenced on 21 September 2026, strengthening protections concerning termination, damage liability, security and privacy. Update management procedures accordingly.
- From 2 October 2026, tenants requesting pet consent within seven days after entering the agreement can keep the pet while the request is considered. A landlord generally has 21 days to respond; otherwise, consent is deemed given without conditions.
7. Check strata and short-term accommodation rules
For an apartment, obtain a strata records inspection. Review by-laws, insurance, defects, meeting minutes, funds and proposed special levies. A low quarterly levy does not establish that necessary repairs are adequately funded.
Under fire-safety maintenance changes commencing 13 February 2026, relevant essential fire-safety measures in apartment buildings must be maintained to AS 1851–2012 where it covers the activity. Check maintenance records and outstanding rectification work.
If you intend to offer holiday accommodation, investigate the separate short-term rental accommodation framework, including registration, planning restrictions, fire standards and relevant by-laws. Permission for an ordinary residential tenancy does not answer every short-term letting question.
A real case: unauthorised building work in Bowral
In Wingecarribee Shire Council v Golman (2025), the NSW Land and Environment Court dealt with unauthorised development at a Bowral property. The proceedings involved Golman and the corporate owner, Lake House Bowral Pty Ltd. Works included a dwelling extension, conversion of stables into residential accommodation and substantial earthworks.
Following guilty pleas, the Court imposed fines totalling $210,000 on Golman and $150,000 on the company, together with costs and publication orders. The decision shows why owners must check the scope of their approvals before commencing work. Ownership does not permit unrestricted building activity, and carrying out work beyond an approval can have serious financial consequences.
What verified enforcement figures show
On 18 May 2026, the NSW Government reported that the Rental Taskforce had identified 7,712 rental compliance matters and issued almost 600 fines worth nearly $421,650. These figures demonstrate enforcement activity; they do not establish the proportion of landlords breaking the law or a typical investor’s financial risk.
Practical steps before buying and leasing
Resolve missing approvals, outstanding orders and unexplained alterations before exchange wherever possible. Obtain written advice on significant issues, price necessary work and allow for time when the property may not be available to rent. An attractive purchase price can quickly lose its appeal if the intended rental use cannot lawfully proceed.
If the property is already tenanted, request the lease, condition report, rent ledger and bond details. Ask about outstanding repair requests and notices. Check whether your plans depend on obtaining vacant possession, and have your lawyer examine whether the contract and existing tenancy support that timetable.
After settlement, keep a compliance file containing approvals, inspection reports, safety records, lease documents, bond confirmations and repair correspondence. Agree with your property manager who monitors each deadline and follows up unresolved matters. Review the file when renovating, changing the use or starting a new tenancy.
CM Lawyers’ conveyancing team can review the contract and property documents, identify legal concerns and explain where specialist planning or building advice is needed before you commit.
Key resources
- NSW Planning — Low and Mid-Rise Housing Policy and section 10.7 planning certificates: permitted uses and site constraints.
- Building Commission NSW — National Construction Code and certifier guidance: applicable standards and limits of certificates.
- NSW Planning Portal — About BASIX: residential sustainability requirements and thresholds.
- NSW Fair Trading — Minimum rental standards, smoke alarms and swimming pools: safety and habitability.
- NSW Fair Trading — Landlord Information Statement and rental-law changes: documents, bonds and current reforms.
- NSW Government — Buying a strata property and fire-safety maintenance reforms: records, shared obligations and building safety.
- NSW Government — Short-term rental accommodation: the separate framework for holiday letting.
- Wingecarribee Shire Council v Golman (2025): official judgment on unauthorised development and penalties.
- NSW Government — Rental Taskforce results, 18 May 2026: the source of the enforcement figures.
