What We Do

As a multi-award-winning architectural practice, healycornelius design has built a reputation for designing highly detailed, functional buildings in a variety of styles with emphasis on energy efficiency. Through imaginative use of materials, maximising light and space, healycornelius design creates buildings and spaces which enrich the clients’ experience while staying within budgetary constraints.

Building from the design knowledge of over 50 years of collective training and experience between participants of the practice, healycornelius design has developed a design ethos in which our clients’ needs are at the centre of the creative design process. 

CIAT Chartered Practice

We are a Chartered Practice with the Chartered Institute of Architectural Technologists (CIAT), which is the lead qualifying body for Architectural Technology, that sets the standards for professional conduct for those practising in the discipline.

As Chartered Members of a professional body, this gives our clients greater peace of mind that we have the necessary qualifications with expertise to provide our services. In addition, as part of the professional Code of Conduct, we carry professional indemnity insurance cover for all the projects we undertake.

RIBA Plan of Work

At healycornelius, we follow the RIBA Plan of Work 2020 which organises the process of briefing, designing, delivering, maintaining, operating and using a building into eight stages. It is a framework for all disciplines on construction projects.

First initiated in 1963, it has been the definitive model for bringing greater clarity to the different stages of a project. It has evolved over the years to reflect changing trends in project approaches and has become an industry-wide tool.


  • Conceptual Sketch Designs
  • Architectural Design
  • Feasibility Studies
  • Dimensional and Building Surveys
  • Pre-Purchase Residential Surveys
  • Planning Applications
  • Listed Building Consent Applications
  • Premises License Applications
  • Building Regulations Applications (incl. Fire Safety)
  • Party Wall Awards
  • Design and Assigned Certifier
    (as Registered Building Surveyors)
  • Full Tender and Construction Drawings
  • Schedule of Works and Full Specifications
  • Health & Safety (CDM / PSDP)
  • Building Contract Administration
  • Construction Phase Programming
  • Procurement and Purchasing
  • Mortgage Lender Documentation
We appointed healycornelius design ltd. to undertake numerous projects and it was the best decision we have ever made. They're very professional, concise and, most of all, understand our needs and trustworthy. Projects undertaken range from consultation, design, development and execution of planning applications and building regulations applications as well as appeals.

NoDa Designs Ltd.
London W1H

We were introduced to healycornelius design ltd. by our freeholder when in initial discussing creating a cinema space in the basement of our premises. At our initial meeting, we discussed various aspects relating to the proposed layout, construction challenges and permissions with Niall which resulted in a significant change to our proposals and, in turn, a significant improvement to the design and capacity of our premises. healycornelius worked with us to secure all necessary approvals and licenses for the performance of film and sale of alcohol. Architectural and Technical Designs were provided by healycornelius without which we would not have been able to deliver the very successful premises that we offer our patrons to-day.

Close-Up Film Centre
London E1

We were recommended Niall (Healy) by a friend who had worked with him directly. He and his team helped us with a two storey extension and loft conversion to our Victorian house in London. A real strength of this practice is an ability to cover all aspects of the project and get into any detail necessary with the building contractor, such as the construction methods to be used. This gave us a lot of confidence that things were being down correctly and helped achieve quick solutions when the inevitable questions and issues came up during the project.

Private Client
Brent, London NW10

We at Saporiti Italia are an Italian interior design and furnishing manufacturing firm. We hired healycornelius design ltd. to coordinate some major restructural works in a series of prestigious apartments at the Montevetro Building in Battersea, London. They worked in perfect tuning with our Italian Designers and coordinated the works on-site very efficiently.

Saporiti Italia
Battersea, London SW11

Accreditations & Awards