East Anglia’s Children’s Hospices supports families throughout their experience of caring for children with life-threatening or life-limiting illnesses. This design for a new single storey hospice building on a 4-acre woodland site in Ipswich provides them with an oasis just a few miles from the town centre. The design of such a highly serviced building on protected woodland posed several environmental challenges which have been met by a collaborative approach. The building has been designed for low environmental impact and is complimented by a 15 year Wildlife Management Plan. Extensive green roofs have been planted with native drought resistant species to contribute to reviving the ecology of the woodland which was damaged by the 1989 storms. The new hospice settles into the woodland, supporting and complimenting it. Each part of the building forms a separate finger into the landscape, threading between mature trees which are retained. As the adopted name for the hospice suggests, in the ‘Treehouse’ one can always have a view of trees. Public areas to the front of the site shield the private, contemplative and quiet parts of the building from view, and a series of vibrant activity spaces form the major circulation, reflecting the vitality and life-affirming approach of the staff. A detailed tree survey, general ecological appraisal, reptile and amphibian survey, and a bat survey were prepared by fellow consultants as part of the planning application. In order to support the maintenance of the site ecology the building is designed for a low environmental impact, for example through the use of permeable landscaping and extensive green roofs. The building is designed to BREEAM Good standards. At present the site is completely inaccessible to the public, but once occupied by EACH the woodland will be preserved by the implementation of a 15 year Wildlife Management Plan and members of the public will be able to become involved with this management.