Sustainability Policy
State Buildings is home to some of Perth’s most celebrated dining, hospitality and cultural experiences – and a shared commitment to sustainability runs through all of it. This page outlines the environmental and community practices that shape the precinct as a whole, alongside those specific to COMO The Treasury, the luxury hotel at its heart. From the restaurants and bars to the floors above, we believe that doing things well and doing things responsibly are one and the same.
State Buildings
In the Restaurants
Across State Buildings, more than 90 per cent of what arrives at the table is sourced from Western Australia or Australia. Good food starts with knowing where it comes from.
Wildflower also partners with Tucker Bush to incorporate tangy, crunchy and sweet herbs and plants from the West Australian bush into their seasonal menu. From lemon myrtle to saltbush, these native plants have been used by local Aboriginal people for many thousands of years. The Tucker Bush range aims to introduce a truly local flavour into suburban cooking, working with communities who have unique stories to share. All of the plants in the Tucker Bush range play a vital role in our ecosystem, with some species under threat.
Across our venues, sourcing remains strongly local, with all proteins and fresh produce sourced from Western Australia or elsewhere in Australia wherever possible. At Post Osteria & Bar, only a small selection of specialty ingredients is imported from Italy, including prosciutto, pasta flour and cheeses, to preserve the authenticity of the Italian dining experience.
At Long Chim, select ingredients, such as curry pastes, are sourced directly from Thailand when required to maintain the authenticity and integrity of traditional Thai flavours.
Petition invites guests with a menu that celebrates fresh, seasonal and locally sourced ingredients.
Seafood
For scallops, we partner with Endeavour Foods(opens in new tab), the leading Rottnest Scallops supplier, who deliver fresh scallops on the day of catch from just 19 kilometres off the coast of Perth. Rottnest Island scallops are only harvested during their peak season, traditionally from September to November. Sustainability of fishing is Endeavour Foods’ paramount concern, and so they work in partnership with the Department of Fisheries to survey the scallop population several times per season, and have fitted their nets with escape panels that allow non-target species to swim out.
Mushrooms
For mushrooms, our sustainable partners are the Mushroom Guys(opens in new tab), who aim to grow produce in conditions as close to the natural environment as possible. Gourmet mushrooms grow naturally on hardwoods, and so the Mushroom Guys blend sustainably-sourced West Australian hardwood sawdust into every one of their mushroom blocks. This hardwood sawdust is a waste stream of the West Australian timber industry; by using locally sourced waste materials, the Mushroom Guys divert almost 30 tonnes of sawdust waste annually. As the farm is located within the Perth metro area, there is also very little energy expenditure associated with transport and deliveries.
Coffee and Tea
Our coffee roaster, Good Seeds Coffee Roastery(opens in new tab), is based in Perth and sources ethical in-season coffee from farms and producers that share our dedication to authenticity, transparency and quality. For tea, we partner with local retailer Teassential, located within the historic State Buildings.
Back of House
From eco-conscious products to innovative waste management, our team work hard behind the scenes to ensure that our cleaning and recycling efforts meet the highest of sustainable standards.
Cleaning Products
We use cleaning products that are biodegradable and gentle on the environment, and have replaced single-use chemical cleaning products with reusable Fibre technology textiles wherever possible.
Recycling
For our guests’ convenience, we practise single-stream recycling, with materials being sorted by our team before being sent for recycling. On average, we recycle 15,000 kilograms of waste every month.
Compostable Waste
Our cardboard baler was installed in January 2024 and compacts large amounts of cardboard into manageable bales, saving valuable storage space. Reducing the volume of cardboard waste means fewer collections, cutting down on transportation and disposal expenses: we have cut cardboard collection to twice a week instead of daily.
Our bin compactor was also introduced in January 2024. This allows us to compact non-recyclable waste, reducing the number of waste collections and cutting our on-site bins from 20 to 12. Compacting waste keeps it contained, reducing overflow, odours and potential hazards in waste storage areas.
Green waste bins were implemented in 2026 for food scraps, including coffee grounds, to support improved waste segregation and increase the diversion of organic waste from landfill. This initiative helps reduce general waste volumes while encouraging more sustainable waste management practices.
Containers for Change
We have partnered with Containers for Change(opens in new tab) to divert containers through the Western Australia recycling scheme, with proceeds donated to Lifeline(opens in new tab) in 2025 and Zero2Hero(opens in new tab) in 2026. Our current goal is to divert 1,500 containers per week. From 1 July 2026, this target will increase as wine bottles become included in the recycling program.
Empowering the Local Communities
We work with partners to sponsor local charity events, enabling local organisations to grow and to raise vital funds. We also organise yearly volunteering activities for our employees, supporting Western Australia’s conservation.
In-Kind Donations
We partner with local charities such as MSWA(opens in new tab), Lifeline(opens in new tab), Breast Cancer Care(opens in new tab) and Telethon(opens in new tab), offering in-kind donations and support of their community efforts.
Our worn linen is donated to the Rotary Club of Hillarys(opens in new tab). Sheets, towels, bathmats, and pillowcases are distributed to communities in need, helping improve hygiene standards in low-income regions and under-resourced hospitals. Through this initiative, approximately 155 kg of textile waste is diverted from landfill each year.
State Buildings has always been a place where culture converges. We are proud to extend that spirit through our support of the arts, including partnerships with the Australian Chamber Orchestra and the West Australian Symphony Orchestra, nurturing the creative life of Perth alongside our culinary and hospitality offering.
Volunteering
We have partnered with local planting groups to support senior volunteers in planting over 400 sedges along the Swan River. This annual team initiative contributes to ongoing conservation efforts across Western Australia, helping to improve local biodiversity.
We are also proud to support the HBF Run for a Reason in 2026. In addition, we continue to work closely with MSWA(opens in new tab), supporting the delivery of services, facilities and funding for people living with neurological conditions across Western Australia.
We proudly volunteer in Keep Australia Beautiful(opens in new tab)’s annual clean-ups, helping ensure a cleaner, greener environment for all.
COMO The Treasury
Arrival
Your sustainable journey with COMO The Treasury begins even before you arrive, as we have thoughtfully designed every touchpoint to minimise environmental impact. This commitment to sustainability continues throughout your stay, from your room and surroundings, to our eco-conscious dining offerings.
Local Sourcing – Floral Decorations
Inspired by the seasonal shift, our flower installations feature over 1,000 individual stems, meticulously composed into a textural mountain of compact floral elements. Most stems are endemic to the region, and all have been locally sourced. We partner with local florist Fox and Rabbit(opens in new tab), who specialise in native arrangements.
Energy Efficiency – Electric Vehicle Charging Station
Australians are embracing the shift to electric cars. We offer six 11kW charging destination stations as part of our valet parking service to support the change to electric vehicles.
In the Rooms
Our guests are part of our sustainability journey, whether that is through reusing towels and linens to conserve water, or making use of our all-natural COMO Shambhala products.
Energy Efficient
All COMO The Treasury guest rooms are fitted with motion sensors that control the lighting and air conditioning systems, ensuring optimum conservation of our precious resources. We have installed acoustic panels on all room windows which keep the room cool in summer and warm in winter, reducing the need for the air conditioning.
Rooms are also serviced twice a day and bed linens changed every other day. We invite guests to hang any towels to reuse, and appreciate your collaboration in minimising our environmental footprint.
Water Efficient
The hotel is also equipped with high-efficiency water heaters, kitchen equipment, refrigeration systems and air conditioners, as well as low-flow energy-efficient toilets, faucets and showerheads.
Reducing Single-Use Plastic
To reduce our plastic waste, COMO The Treasury has an onsite filtration and bottling system, which produces high-quality, low-impact still water. We do not utilise plastic straws in the hotel, whilst all takeaway packaging is biodegradable, with only wooden utensils offered. We provide locally grown and in-season fruits in each room, with in-room beverages decanted and served in reusable glass jars and bottles.
The COMO Shambhala(opens in new tab) products and amenities used across our hotel rooms are crafted from high-grade essential oils and all-natural products. They are free from parabens, sodium laurel sulphate, petrochemicals and synthetics, making them environmentally-friendly and sustainable.
2026 Green Team Updates
We are pleased to share an update on our Green Team initiatives so far in 2026.
In February, we celebrated International Women’s Day with cupcakes for our team. In March, Harmony Week was marked with a Cathedral Square Picnic and Play for children. ANZAC Day was acknowledged with children’s books placed in rooms for families and dawn service information provided to guests.
In April, we hosted an awareness talk as part of our COMO Grant 2026 commitment to Zero2Hero, whose mission is to support suicide prevention efforts across Western Australia.
Through our Containers for Change partnership, we have recycled 30,361 containers to date in 2026 — with further updates to come as wine bottle recycling is introduced to the program.
We are also supporting the Perth Homeless Support Group(opens in new tab) Winter Appeal, with a donation drive for sleeping bags and jackets currently underway.
Please find more information about our Sustainability Policy here(opens in new tab).
