Giovanni (John) Diodati

Architect, Principal, Director
OAQ, OAA, AAA, AANB, FRAIC, FAPT, CAHP

Giovanni (John) Diodati is a Director and Principle Associate at EVOQ. Acknowledged as a leader in North American heritage conservation, he has honed his expertise in materials conservation and traditional building practices over the last three decades. John designs durable and cost-effective solutions, which he tailors to the specific nature of the material and the history of the building. He also uses his personal archive of detailing and performance data to inform his contemporary projects, often crafting modern architectural responses with traditional materials. He is an effective communicator, skilled at achieving consensus with multiple stakeholders and perspectives and he usually leads a team of specialized consultants.  His portfolio of award-winning projects includes some of Canada's most important historic buildings, including the West Block, Parliament Hill Ottawa, the Mappin Wing of the Governor-General’s residence in Ottawa, and the Harbour Commissioners’ Building, Montreal.

John’s analytical abilities are supplemented by his intense curiosity and scholarship. He has designed and implemented numerous monitoring and maintenance programs that have advanced understanding in the twinned fields of Heritage Conservation and Sustainability. By promoting research and knowledge sharing, he bridges the gap between theory and practice. John has served as Vice-president of the International Association for Preservation Technology (APT), Chairman of the Continuing Education committees of the Ordre des architectes du Québec (OAQ) and the Royal Architectural Institute of Canada (RAIC), and chairman of the technical committee of the Institut de la maçonnerie du Québec. He is also a frequent speaker to his peers, student groups and the general public.

John is a graduate of the McGill University School of Architecture.

Award | Distinction
Presented by
Date

Award of Excellence

Canadian Association of Heritage Professionals (CAHP)

2024

National Urban Design Award, Urban Design Category

Royal Architectural Institute of Canada

2024

Heritage Planning and Architecture in Built Heritage Award

Heritage Toronto

2024

Quebec Library and Archival Centers Architecture Prize

Fédération des milieux documentaires

2023

Award of Merit, Conservation – Architecture

Canadian Association of Heritage Professionals (CAHP)

2021

Award of Merit, Small & Lovely

Canadian Association of Heritage Professionals (CAHP)

2021

Award of Merit, Architectural Category

Canadian Institute of Steel Construction

2019

Award for Federal Buildings Heritage Conservation Excellence

Real Property Institute of Canada

2019

Award of Excellence, Conservation: Architecture

Canadian Association of Heritage Professionals (CAHP)

2019

Certificate of Merit for Innovation in Architecture

Royal Architectural Institute of Canada

2019

North American Copper in Architecture Award for Outstanding Use of Architectural Copper in Building Design and Construction

Copper Development Association Inc.

2018

Award of Merit, Conservation: Landscape Category

Canadian Association of Heritage Professionals (CAHP)

2018

BAC Craft Award for Best Restoration / Rehabilitation / Maintenance Project

International Union of Bricklayers and Allied Craftworkers (BAC)

2017

Award of Excellence, Conservation: Architecture

Canadian Association of Heritage Professionals (CAHP)

2017

North American Copper Award in Architecture for Outstanding Use of Architectural Copper in Building Design and Construction

Copper Development Association Inc.

2017

Award of Excellence, Conservation: Small & Lovely

Canadian Association of Heritage Professionals (CAHP)

2016

Award of Merit, Conservation (Restoration)

Canadian Association of Heritage Professionals (CAHP)

2013

North American Copper in Architecture Award – Rideau Hall Front Entrance Handrail

Copper Development Association Inc.

2013

Ecclesiastical Insurance Cornerstone Award for Building Heritage (Adaptive Use)

Heritage Canada Foundation

2013

Ecclesiastical Insurance Cornerstone Award for Building Heritage (Adaptive Use)

 Heritage Canada Foundation

2013

Award for Conservation on a Heritage Building or Complex

Canadian Association of Heritage Professionals (CAHP)

2012

Award of Excellence for the Preservation of a Heritage Building

Canadian Association of Heritage Professionals (CAHP)

2012

Certificate of Excellence celebrating design as a motor of economic growth through an integrated approach (architecture, landscape architecture, interior design, graphic design) in the development of the project.

Mission Design

2011

Preservation of a Heritage Building Award of Merit

Canadian Association of Heritage Professionals (CAHP)

2011

Award of Excellence for the Preservation of a Heritage Building

Canadian Association of Heritage Professionals (CAHP)

2011

Preservation of a Heritage Building Award

Canadian Association of Heritage Professionals (CAHP)

2010

Award of Excellence for the Preservation of A Heritage Building or Complex for the Auditorium restoration.

Canadian Association of Heritage Professionals (CAHP)

2010

Award of Excellence, Ottawa Architectural Conservation Awards

City of Ottawa

2008

Award of Excellence for the Preservation of a Heritage Building

Canadian Association of Heritage Professionals (CAHP)

2004

Wawanesa Award for Heritage Enhancement for restoration and renovation, Montreal Architectural Conservation Operation

 City of Montreal

2002

Minister’s Award

Public Works and Government Services Canada

1997