House 403 is a women-owned plant cafe in Lexington, Massachusetts, serving locally-roasted coffee and light bites in a welcoming atmosphere filled with greenery. Our community space is home to a variety of events and local happenings- including yoga workshops, hands-on houseplant info sessions, art lessons, sound baths, breathwork classes and more.

Our retail shop features a variety of curated plants, botanical items, books and gifts. We also offer houseplant consultation, repotting and design services.

Whether you are looking to add more greenery to your living space, shopping for the perfect gift, meeting up with friends, working remotely or attending a special event - House 403 is the perfect place to pause, breathe, and connect.