RIBA Chartered Practice

Paul Cashin Architects | Contemporary Chartered Architects in Winchester, Hampshire / Services

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.

OUR WORK |   A Full Design Service, From First Ideas to Finished Buildings

PCA are an RIBA (Royal Institute of British Architects) and ARB (Architects Registration Board) registered Chartered Architecture Practice that operate according to stages outlined in the RIBA Plan of Work 2013:


  • Stage 0 - Strategic Definition

  • Stage 1 - Preparation & Brief

  • Stage 2 - Concept Design

  • Stage 3 - Developed Design

  • Stage 4 - Technical Design

  • Stage 5 - Construction

  • Stage 6 - Handover & Close Out

  • Stage 7 - In Use

STAGE 0 & 1 |   Research and Preparation

We like to start by meeting the client and discussing their present position. From our initial conversations about the site and landscape, or the local context and existing built character of a place, we can begin to understand where the project is. We also discuss the clients scope, requirements, and desires for the project, forming a client brief.

We are able to survey the existing buildings and research the conditions that are present on the site. We then create ‘existing drawings’, an accurate record of drawings and photographs from which to base our first ideas.

Research  Surveying a site

Research Surveying a site

STAGE 2 |   Concept Design

We move into sketch ideas and concept development after we have completed our Research and Preparation stage.

We start to think about the architecture as atmosphere, materials and light. We also consider technology, sustainability, and practicality important to the design process. Our aim is to thread together multiple strands of requirements and desires, the combination of which creates the concept for the project.

We will present our concepts often with a storyboard of ideas, and ultimately arrive at a narrative for the project. We will research materials and form, spatial arrangements and functionality, striving towards a proposal ready to be drawn up for the next stage of the project.

Concept  Sketches and models

Concept Sketches and models

STAGE 3 |   Developed Design

We are now ready to present our proposals for planning.

We may have already consulted with the local authority during the previous stages of concept development. However once we are certain of our design proposals we begin the formal process of achieving permission to develop, should it be required. We will confirm materiality, massing and form, and present our work to review panels and council meetings should it be required.

The project will start to become real from this stage onwards, as our designs move from ideas of concept to something which can be constructed. We will also begin to work with other industry professionals such as Engineer’s and Cost Consultants, some of whom may be involved in earlier stages of the process.

STAGE 4 |   Technical Design

We will now prepare the detail drawings and specifications that will be used to price the tender and construct the building. We will also arrange, meet with, and collate information from specialist suppliers and manufacturers. We aim to co-ordinate all of the necessary information required whilst reviewing the proposals with all involved, ensuring that the clients needs are met at this crucial stage.

We can then invite and appraise tenders from potential Contractors and Builders, and arrange the building contract on your behalf.

Technical Design  Detail drawings ready for tender

Technical Design Detail drawings ready for tender

STAGE 5 - 7 |   Construction and Close Out

Throughout the construction phase we are able to administer your contract with the Contractor or Builder, carry out regular inspections, and deal with queries. We can also instruct any additional work required, monitor progress on site, keep track of cost, value the works, and certify payments as they become due to the builder.

When the project is ready to handover we will inspect and value the works and issue a certificate. We may also like to photograph the project at our own expense.

Construction  Projects underway

Construction Projects underway


PCA can provide the following services to clients:

  • Architectural design; from first concepts, through detail design, to realisation and completion

  • Topographical surveying and existing drawing packages

  • Brief forming and feasibility studies

  • Planning applications

  • Statutory consultation and advice with procurement methods

  • Production information and tender documentation

  • Site inspections and Party Wall consultation


We hope you find this guide useful. Should you wish to book a consultation, please contact us:

E: paul@paulcashinarchitects.co.uk     T: 01962 807 077     M: 07837 786 320

A: Paul Cashin Architects, Suite 11 Talbot House, Staple Gardens, Winchester, Hampshire SO23 8SR


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.