Sustainability has taken the design world by storm. But what exactly does it mean? Is it just a buzzword? And how can you make your interior designs sustainable?Sustainability isn’t just about a token gesture or ticking boxes. It’s a whole philosophy of design. The goal is to use materials and resources without damaging the planet, and creating designs which will be useful and beautiful for years to come. Here are just a few ways that people are making their homes and offices more sustainable:Natural and recycled materials The most popular home decoration materials in 2019 are all natural materials. We’re talking classic stone, wooden cabinets and furniture, and organic materials like wickerwork or bamboo.Recycled materials are becoming more popular, too. From repurposed industrial concrete to innovative new materials made from recycled plastics, expect to see more recycled materials in upscale home and office designs.Investment pieces For a long time, fashion and design were disposable. People bought things fast, then got bored and threw them out. But modern consumers are choosing investment pieces: furniture that’s made from natural materials, by real craftsmen. Furniture that becomes a family heirloom.Working with the natural environment The most sustainable designs are ones which fit seamlessly into the environment around them. Architects and designers are starting to get really creative in this area. We can replace wasteful electric bulbs with natural lighting, go off-grid with solar panels, and insulate homes and offices with green garden roofs.Living plants Not everyone has the luxury of starting fresh, with a new building and design. But there are some easy ways to make sustainability part of your home or office décor. The biggest trend in 2019 so far has been houseplants – from cute, easy-to-care-for succulents to windowboxes full of summer blooms.