Preston and Chester-based architect firm Cassidy & Ashton said the final phase of its masterplanning work for the hospice in Lancaster is completed.
Work included a design of the new build Oak Centre, used by day patients, as well as ward refurbishments.
The 2,900 sq ft Oak Centre was officially opened in 2007 by HRH the Duke of Gloucester.
Cassidy & Ashton planned a ward refurbishment in 2008 and designed the Sefton Ward remodelling in 2009. The Westmorland wing and lodge building were also refurbished last year.
The project was fully funded by a refurbishment grant from the Government's Department of Health.
Team Northern Construction, based in Sandside in Cumbria, was awarded a £710,000 contract to carry out the refurbishment work on behalf of St John's Hospice.
The project team also included Preston-based Thornber & Walker as quantity surveyor
Dan Brown, an architect at Cassidy & Ashton, said: "It is very pleasing to be able to see people now using the remodelled areas and benefiting from the improvements.
"The work has been carried out in phases to allow for minimum disruption to the hospice's patients and we hope that they will enjoy the results."