About us

Who we are

Our Story

We are a specialised architectural practice with expertise in high-performance sustainable design of residential, commercial, masterplanning and high-end interior design, focusing on project design that are responsible and cost-effective. Our core strength is integrating innovative design with technical proficiency in areas like passive house principles and net-zero energy buildings, ensuring long-term value and a minimal ecological footprint. We have a proven track record in delivering energy-efficient, resilient and beautiful buildings through a collaborative approach that prioritises client needs and community impact.

Bespoke Design

as a practice we create unique and customised designs that cater specifically to the individual requirements, preferences, and lifestyles of the client and meets their expectations and needs ın creatıng spaces

Carefully Planned

all our objects are planned, created or structured with close attention to detail, precision, and purpose to imply care and intention that goes into the design process to ensure quality, functionality, or beauty

Smartly Executed

our design demonstrates intelligence, efficiency, and creativity in both concept and execution stages with every element serves a clear purpose with no wasted space or unnecessary complexity of forms 

Our Team

We are proud of the creative, sociable and welcoming community that makes HASSA such a great place to work. Although our team remit is usually design, we have also collaborated successfully with other architects to deliver a project, a position that demands exceptional design skills, a focus on detailing and the ability to add value to a scheme without compromising its inherent architectural language, principles or identity.

John Balmer

CEO & Founder

Marry Scott

Planning Manager

Jennette Jones

Senior Interior

Joseph Smith

Project Manager

COCO Interior Award

1st runner up 2010
Winner 2012
2nd runner up 2015
Winner 2017

Architect Award

1st runner up 2010
Winner 2012
2nd runner up 2015
Winner 2017

HOME Interior Design

1st runner up 2010
Winner 2012
2nd runner up 2015
Winner 2017

Incorp Award

1st runner up 2010
Winner 2012
2nd runner up 2015
Winner 2017

we execute function and form with innovative use of materials and space

Why Choose Us?

On Time Service

To achieve project brief, the practice understanding and experience has ensured our continuous association with wide range of clients with various requirements and objectives.

residential clients

we are quite please to apppoint HASSA acting as our architect

Peter Sullivan
home owner

for our home development we worked wıth hassa and the outcome is no short of what we expected

james catford
home owner

A Team Of Professionals

With a team of highly skilled dedicated, experienced and talented architects and designers operating from our offices in the heart of London and Istanbul, we collaborate to produce vibrant and inventive architecture in response to our client’s unique requirements.

Long Experiences In This Field

Over the past two decades, the reputation of the practice has grown extensively, with the development of a vast portfolio of elite international clients, for whom they have been increasingly recommissioned to undertake residential and cultural developments, high end interior design projects and bespoke furniture installations required to meet a variety of specific needs and requirements.