Haumiru is a Japanese online community and matching platform focused on housing, construction, and renovation. It brings homeowners, industry professionals, and businesses together through discussion, information sharing, and work opportunities. Visitors can ask experts questions about topics such as new homes, renovations, and exterior projects, with professionals invited to respond. The site also supports job and project listings, allowing users to post requests for tradespeople or offer services, with opportunities organized by occupation and region.

Haumiru features recommended contractor profiles, including service areas, customer ratings, and reviews, helping users explore local providers. Members can share feedback and indicate which businesses they would consider hiring. Other sections include real estate listings, blogs, short posts, polls, and Haumiru Media, creating additional ways to exchange ideas and discover housing-related information. The platform offers free registration and allows users to participate anonymously in some activities. Overall, Haumiru serves as a practical meeting place for people seeking advice, connecting with building professionals, finding work, or sharing experiences related to homes and property.