RIBA Chartered Practice

Stanley Street Contemporary Modern Extension Winchester Hampshire

Paul Cashin Architects 'PCA' is a creative RIBA (Royal Institute of British Architects) Chartered Architecture practice based in Winchester, Hampshire. PCA takes a design-led approach to the practise of contemporary architecture, believing that well thought and considered design is essential to the creation of successful architectural space.

The practice undertakes contemporary architectural design projects across residential, commercial and civic sectors of the construction industry. Currently having a number of live projects across Winchester, Hampshire and the South Coast including one-off new build houses, extensions and commercial business projects.

As a small practice, our strength lies in our inclusive and personal approach, working directly with clients, consultants, and contractors, encouraging the cross over between architecture and other areas of art and design.

We are in a consistent state of process, working through a range of media including physical and computer models, hand and computer drawings, sketching and conceptual diagrams, discussions and presentations.

Paul Cashin Architects was founded in 2012 by Paul Cashin. Paul studied Architecture at the Universities of Portsmouth and Vienna, graduating in 2011 with an RIBA Presidents Medal nomination. He has worked for numerous practices, including Design Engine Architects working on contemporary university, school, housing and one-off house projects between 2008 and 2012. Paul has also taught at the University of Portsmouth and was a member of the Project Office for the school. Paul started PCA in 2012 which has set up offices in Winchester in 2016.

Paul is an RIBA Chartered Architect registered with the ARB.

STANLEY STREET, Southsea, Portsmouth, Hampshire

Extension & Renovation

Scheme: Extension   /   Client: Private   /   Type: Residential   /   Location: Southsea, Portsmouth, Hampshire


Stanley Street is an existing listed Edwardian mews building in Southsea, Portsmouth, Hampshire.  The owners of this property wish to replace the rear north facing portion of the existing house with an in keeping extension but with modern contemporary interiors.  The conservation policy of the street imposes strict rules on developing each of the period buildings, so our architectural design is focused on the use, function and atmosphere of the contemporary internal spaces and how these can relate to and benefit the existing property.

White painted brickwork is used for the external walls as well as a backdrop to the kitchen and dining rooms.  All spaces feature bespoke joinery items such as the kitchen island unit, dining room storage wall, and bedroom dressing area.

A large glazed roof light panel brings light in above the kitchen spaces.


For more examples of our contemporary architecture designs please view our selected projects here, or if you would like to discuss a project please view our contact page here.