The Illawarra coastline has a significant stock of caravan parks and residential parks, from long-established family holiday parks at Kiama, Gerringong, and Shellharbour, to the permanent residential communities that have developed in coastal parks under NSW’s Residential (Land Lease) Communities Act 2013. In these settings, mould is a persistent and often under-managed problem. The combination of small cabins or caravans (often with minimal insulation and limited ventilation), high coastal humidity, proximity to the ocean, and, in permanent communities, the continuous occupancy of often older residents who may be vulnerable to respiratory illness creates a situation that needs proactive management. This guide covers both the management obligations of park operators and the rights of park residents.
Quick Answer (BLUF)
Caravan park operators have maintenance obligations under NSW’s Residential (Land Lease) Communities Act 2013 for permanent residents, and under consumer law for holiday guests. Mould in an accommodation unit that affects habitability must be remediated. For cabins and caravans on coastal Illawarra sites, the combination of compact spaces and salt air humidity makes annual preventive treatment a cost-effective alternative to repeated reactive remediation.
Why Illawarra Coastal Parks Are High-Risk for Mould
The Compact, Poorly-Ventilated Structure Problem
Caravans and park cabins are, by nature, small and compact. A typical Illawarra park cabin of 25-40m² has a bathroom, kitchen, and sleeping area within a few metres of each other. The volume of moist air generated by showering, cooking, and occupant respiration is large relative to the building volume, and the exhaust ventilation in most cabins is minimal, a small bathroom fan, if present, and often no mechanical kitchen extraction.
When these compact structures are on a coastal site where outdoor humidity is already 75-85% on summer days, the indoor humidity without active management can reach 90%+. In such conditions, mould will grow on any organic surface it can colonise, ceiling boards, wall cladding, curtain fabric, carpet, and the joints around plumbing fixtures.
Salt Air and Coastal Exposure
Kiama, Gerringong, Shellharbour, and the Wollongong beachfront parks are all in direct salt air environments. Salt particles in the air:
- Settle on all surfaces, increasing surface hygroscopicity (moisture absorption)
- Corrode metal fixings and reduce the integrity of seals and flashings over time
- Contribute to the nutrient load available to mould on external and semi-external surfaces
Parks closer to the Kiama headland and Shellharbour harbour mouth are particularly exposed.
Seasonal Vacancy and Humidity Buildup
Holiday cabins that are unoccupied for extended periods, midweek in shoulder seasons, winter closure periods, accumulate humidity inside the closed structure. Without ventilation, humidity builds to levels that grow mould rapidly once temperatures allow. A cabin closed for two weeks in May (autumn, cooling temperatures, high coastal humidity) may open in June with significant mould on ceilings and internal walls.
Ageing Infrastructure
Many Illawarra park cabins were built in the 1970s, 1990s, with materials and construction methods of that era, fibrous cement cladding, single-skin walls, minimal insulation, and basic plumbing. These structures are more mould-prone than modern construction and often require significant investment to upgrade to a mould-resistant standard.
Operator Obligations
For Holiday Guests
Under the Australian Consumer Law, holiday accommodation providers must deliver accommodation that is fit for purpose, this includes being free from conditions that affect habitability, including significant mould. A guest who arrives at a park cabin and finds mould on the walls or ceiling is entitled to a remedy: a clean alternative cabin, a reduced rate, or a refund. Online review platforms have made poor mould management a significant business risk for park operators, a single scathing review citing mould can cost bookings equivalent to many times the cost of proper treatment.
For Permanent Residents
Permanent residents in residential parks (those on land lease arrangements under the Residential (Land Lease) Communities Act 2013) have rights similar to tenants under the Residential Tenancies Act 2010. The park operator must maintain community infrastructure and the site (land) in a reasonable condition. The obligation for the structure (caravan or cabin) depends on ownership, in many residential parks, the resident owns their own van or cabin, and maintenance is their responsibility. However, where the park operator owns the cabin and leases it to the resident, mould is a maintenance obligation.
For disputes, the Residential (Land Lease) Communities Act provides access to NSW Fair Trading mediation and the NSW Civil and Administrative Tribunal (NCAT).
Preventive Management for Park Operators
A proactive mould management program for an Illawarra coastal park is significantly less expensive than reactive remediation of multiple cabins during the busy season:
Annual inspection protocol: Before each peak season (typically October, November), inspect all cabins for mould, ceiling boards, bathroom areas, behind furniture, inside wardrobes. This is a 20-30 minute per cabin task that identifies problems before guests arrive.
Pre-season fogging treatment: For cabins with known mould pressure or those that have been closed for extended winter periods, antimicrobial fogging treatment before the season opens reduces spore counts on all surfaces and provides weeks to months of residual protection. For a park with 20-30 cabins, a bulk fogging schedule can be arranged cost-effectively.
Ventilation upgrades: Installing timer-run exhaust fans in bathrooms, and adding passive ventilation (roof vents, louvre panels) in compact cabins makes a significant difference to ongoing humidity management. This is a one-time capital cost with ongoing mould management benefit.
Departure ventilation standard operating procedure: Brief housekeeping staff to leave windows slightly ajar, leave bathroom exhaust fans running on timer for 30 minutes after cleaning, and to open internal doors between cabin areas to promote cross-ventilation.
FAQs
My cabin at a Kiama park smells musty every time I arrive. Is this normal?
No, a persistent musty smell is mould, and it is not inevitable in a well-maintained coastal cabin. Raise it with the park operator in writing and request an inspection and treatment. If unresolved, lodge a complaint with NSW Fair Trading (for a commercial holiday operator) or NCAT (for a residential park operator).
How much does it cost to treat mould in a typical park cabin?
A single cabin fogging and surface treatment for a standard park cabin typically costs $200 to $400. For a park operator managing this across a portfolio of cabins, a bulk treatment program can be arranged at significantly lower per-cabin cost. Contact us to discuss a park program.
Can I treat mould in my own caravan myself?
Yes, for minor surface mould on hard surfaces. Use a quaternary ammonium spray, allow dwell time, and wipe clean. For mould inside walls, in roof hatches, or under the van, professional treatment is warranted, caravan construction makes DIY access to these areas difficult and the compact space means airborne spore concentrations during any disturbance will be very high.