Members of the Cohanim Architecture team in a historic interior
Cohanim ArchitectureCohanim Architecture
Cohanim Architecture · RIBA Chartered

Practice

What Drives Us

A RIBA Chartered Practice based in London and South Oxfordshire, our studio is made up of ARB-registered and RIBA Chartered architects and designers alongside Part I and Part II professionals, with a track record in delivering complex projects across the UK and internationally in the residential, civic, government, corporate, ecclesiastical, infrastructure and hospitality sectors. This includes leading multidisciplinary teams, varied planning approvals, development-led strategic sites, Grade I, II* and II listed buildings and Green / Grey Belt sites.

At the heart of the practice is an unwavering dedication to exceptional service, through a relentless work ethic, open-minded strategic thinking and intelligent design - keeping our clients' goals in mind at every stage. We view good design as an iterative process which is grounded in context and investment value: a considered balance of creativity, technical expertise and strategic foresight. We stay in lockstep with our clients and our knowledge extends far beyond architecture and touches on multiple sectors – this means we can spot opportunities other firms often do not see - and find routes through to delivery with this approach.

“Great architecture is shaped through both vision and problem-solving. Our clients are a fundamental part of every project, and forming a dialogue between the right stakeholders at the right moments forms a key component to delivering the very best results. We excel in finding creative solutions to constrained sites.”
Joshua Harrison, Managing Director
Joshua Harrison
Managing Director
RIBA Chartered Practice
20020793
Team
10 studio based staff & 25+ on multidisciplinary schemes
Heritage
Grade I, II* and II listed
Delivery
RIBA stages 0–7
Oldest site
c.1400 AD
Projects
300+

Practice structure

The practice is led by Managing Director Joshua Harrison. Design is co-led from the senior team - Michael who forms the core of the day-to-day running of the architectural jobs alongside the director and Anderson, educated at the University of Texas at Austin, the Architectural Association and MIT, who focuses on conceptual execution and reviews across all stages. Projects generally run through the key RIBA stages 0–6 but often just for the first or latter stages depending on the brief. We are supported by Part 2 & Part I architectural assistants, a BIM assistant and boast a formidable network of relationships with engineers, surveyors and RTPI planning consultants.

Joshua Harrison, Managing Director
Joshua Harrison
Managing Director
Joshua read architecture at London South Bank University and leads the studio with a tenacious drive to deliver results for our clients. This is underpinned by a relentless work ethic, ensuring the practice remains focused on a common goal from the outset through to delivery. His approach is grounded in a sharp eye for detail, ensuring that every project is architecturally refined while being rigorously reviewed at each stage.

Importantly, Joshua brings together architectural thinking, strategic planning and commercial viability to unlock our clients' sites. This approach has resulted in significant economic value being added to sites where others looked in a different direction, or simply failed at the last hurdle.
Michael, Senior Architect
Michael
Senior Architect · ARB RIBA
Michael is an experienced Architect with particular strengths in space configuration, residential conversions and the resolution of complex design challenges. Alongside the Director, he manages many of the studio's major projects and is equally adept at detailed RIBA Stage 4 construction work as he is at RIBA 1-3.

Michael has worked closely with Joshua for over five years. They are highly familiar with one another's working methods and understand how to play to their respective strengths to develop strong, well-resolved solutions together.
His previous experience also includes working with other established architectural practices across the country, bringing a broad base of technical and design experience to the studio.
Anderson, Senior Architect
Anderson
Senior Architect · AIA NCARB FRSS

Anderson's portfolio includes leading the £30M conversion of a Grade II* listed ecclesiastical building into a 5-star hotel in central London. Alongside his architectural work, he has taught at the University of Oxford’s Ruskin School, the Royal College of Art, Central Saint Martins, and the Architectural Association, where he now teaches observational hand drawing. At the practice, Anderson co-leads conceptual direction alongside the director and monitors key schemes. As of Q2 2026 he splits his time between the United States and the United Kingdom.

Veronica, Architect
Veronica
Architect · ARB RIBA
Veronica achieved her Bachelor's degree in Architecture from Politecnico di Milano and her Master's from UCL Bartlett. She has worked on large residential developments, commercial projects, and listed buildings through her 10 years of industry experience. She has a particular interest in the technical aspects of architecture, focusing on understanding how buildings function and reviewing work. Her passion lies in mentoring. In her spare time, she enjoys reading, swimming, and running.
Anna, Architect
Anna
Architect
Anna holds a Bachelor's degree in Architecture and a Master's in Landscape Design, bringing a keen eye for composition and spatial harmony to every project. She is attracted to the visualisation stage, creating high-quality renders and animations that help refine concepts and communicate design intent throughout both conceptual and technical development.
Santiago, RIBA Part 1 Architectural Assistant
Santiago
RIBA Part 1 Architectural Assistant
Santiago completed his BA (Hons) Architecture degree at Nottingham Trent University and received nominations for several awards. He was offered a year out placement with the team in response to his proactive approach to work and his high-quality portfolio.

Since joining he has become adept at producing technical details, working across a suite of software to bring together several disciplines and is confident meeting and liaising with consultants and clients alike.
Clara, BIM Assistant
Clara
BIM Assistant

Clara joined us in Henley-on-Thames from Paris where she is studying BIM, architecture and working with a firm producing BIM compliant solutions in the medical environment - generally large hospital infrastructure. Notwithstanding her relatively brief industry experience, she has brought BIM convention capabilities and discipline, an eye for detail and a fantastic work ethic to the firm and the schemes she is assisting with.

Daniel, Work Experience
Daniel
Work Experience

Daniel is working with us for a year out prior to continuing his architecture studies at the University of Kent. He has worked with the studio intermittently over the past 2 years and is with us full time for 2026 - a placement we offered to him due to his exceptional work ethic and curiosity. We are training him to use Revit and the respective BIM software and teaching him about various aspects of the profession including how we design buildings and the methodologies we use.

Portrait to come
Hannah
Personal Assistant

Hannah assists the Director with day-to-day administration and helps coordinate the consultants who support the practice, such as our accountants, suppliers and the many other organisations essential to the proper running of a company.

Cohanim Architecture's Henley-on-Thames office
Open positions
Senior Architect & BIM POSITIONS
We are hiring. In particular we are looking to bolster our BIM fluent team and a senior architect with at least 5-years post-qual experience.
Send a portfolio and a covering note with "Open role - job application" in the subject line.

Selected experience

We have an impressive track record in achieving planning permission in scenarios others often struggle in: Green Belt, Conservation Areas and listed properties. However, our experience is far more comprehensive and extends to complex multidisciplinary work involving multi-sector work, clients and construction technology.

We use the latest software and incorporate BIM throughout a project's lifecycle including interdisciplinary modelling. We demonstrate this on projects located across the UK including in the heart of prime London.

£30m
The GDV based on a 5% yield disposal on our mixed-use scheme in Buckinghamshire which we took on as a backland Green Belt plot, that was constrained by flood risk, TPO's, historic covenants - achieved through delivery of a tenanted site comprising two Grade A tenants, 25 year leases and annualised rent roll for our client of over £1.2m.
1763
First consented extension to a Grade I listed church since the 18th century.
PCL
Our experience covers the entirety of the United Kingdom and our regular 'patch' covers much of central West London including residential and commercial sites across much of prime central London.
International
We have been chosen to work on sites in Jeddah, Saudi Arabia, Zimbabwe, Africa and with many other international clients. We have the ability to deliver large bilingual projects and have done so.
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Henley-on-Thames
Old Brewery House, 86 New Street
Henley-on-Thames RG9 2BT
London
207 Regent Street, 3rd Floor
London W1B 3HH