Skip to content

Canada's Business and Tech Newsroom

  • Professional Subscription
  • Partnerships & Advertising
  • Licensing & Syndication
Log In Subscribe
Welcome,
  • My Account
  • Log Out
  • Business
  • Tech
  • National
  • The Big Read
  • Briefings
  • Commentary
Search
Log In Subscribe
Welcome,
  • My Account
  • Log Out
Exclusive

Mattamy Homes developing proposal for Sidewalk-led Quayside land

Mattamy Homes, the leading real-estate developer, is quietly shopping around a development proposal for the 12 acres of Toronto’s waterfront known as the Quayside, with a meeting planned with the Ontario government this week, The Logic has learned.

This is Mattamy’s second proposal for the waterfront. The company was part of a consortium—which included OMERS and Manulife Financial—that responded to a Request for Proposals (RFP) for Waterfront Toronto’s Quayside development that Sidewalk Labs won.

Respondents were given only six weeks to complete the complex RFP, which Ontario’s auditor general said gave Sidewalk Labs an edge because it “received more information” than the other bidders. The new Mattamy Homes proposal outlines what the Quayside RFP could have looked like if the other bidders were given more time, according to a source familiar with the project. The source also claimed that Mattamy isn’t trying to overturn the Sidewalk Toronto plan.

Exclusive

Mattamy Homes developing proposal for Sidewalk-led Quayside land

By Amanda Roth
Toronto's eastern waterfront.
Feb 5, 2019
A A
A Small A Medium A Large
Share

Gift

Share

Mattamy Homes, the leading real-estate developer, is quietly shopping around a development proposal for the 12 acres of Toronto’s waterfront known as the Quayside, with a meeting planned with the Ontario government this week, The Logic has learned.

This is Mattamy’s second proposal for the waterfront. The company was part of a consortium—which included OMERS and Manulife Financial—that responded to a Request for Proposals (RFP) for Waterfront Toronto’s Quayside development that Sidewalk Labs won.

Respondents were given only six weeks to complete the complex RFP, which Ontario’s auditor general said gave Sidewalk Labs an edge because it “received more information” than the other bidders. The new Mattamy Homes proposal outlines what the Quayside RFP could have looked like if the other bidders were given more time, according to a source familiar with the project. The source also claimed that Mattamy isn’t trying to overturn the Sidewalk Toronto plan.

Talking Point

Sources told The Logic that the proposal isn’t meant to replace the existing project, but it could offer an alternative to politicians managing the controversial development.

Mattamy would not confirm the new proposal, saying in a statement, “Specifically on the Quayside project we learned a lot through the process and have continued to advance our thinking and explore new ideas to acquire a deeper understanding of how to provide the best urban living experience possible. This thinking is going to significantly contribute to new developments in the future.”

A meeting is expected to be held this week between Mattamy Homes and the provincial government, sources said. Both the province and the city of Toronto denied knowledge of the proposal.

Sources said the proposal is made up of two parts: a real-estate presentation for the 12 acres of the waterfront building off lessons from the Alphabet-led Sidewalk project, and a technology proposal that brings together Canadian smart-city technology partners, including Miovision, ThoughtWire and Sightline Innovations.

Miovision, ThoughtWire and Sightline Innovations did not immediately reply to requests for comment.

Mattamy Homes is one of North America’s largest residential builders, and has spent much of its 40-year history building suburban developments. It recently moved into urban construction, with the December 2014 acquisition of Monarch Corporation, which focuses on high-rises. Mattamy is building a 53-storey condo tower on the lakefront in Etobicoke.

Multiple sources told The Logic that Peter Gilgan, Mattamy founder and CEO, was upset after a Bloomberg News report last fall where Sidewalk Labs said it had talked with Mattamy Homes about collaborating on tall timber for the Quayside project. Gilgan told people close to him there was no formal discussion.

Gilgan is a major Toronto philanthropist. In March 2012, Gilgan donated $40 million for a Sick Kids research centre; in March 2012, he donated $30 million to St. Michael’s Hospital for a new patient-care tower in September 2014.

A spokesperson for Waterfront Toronto said that the agency was unaware of any current proposal from Mattamy Homes.

“Sidewalk Labs was chosen by Waterfront Toronto after a rigorous, 159-day RFP process that closed in October 2017, over 15 months ago,” said the spokesperson. “On no occasion did any RFP proponent request an extension to the timeline.”

Waterfront Toronto launched its call for an innovation and development partner on the Quayside in March 2017. In October, Sidewalk Labs was announced as the chosen partner. Ontario’s auditor general then tabled a money-for-value audit on Waterfront Toronto on Dec. 5, 2018, and concluded that though Waterfront Toronto provided information to all bidders ahead of the RFP, Sidewalk Labs had “received more information” than the other parties.

On Dec. 6, 2018, the province fired all three provincial representatives on the agency’s board of directors. Ontario Infrastructure Minister Monte McNaughton said in a statement at the time that the report “made it clear that oversight needs strengthening.” Those three board members have yet to be replaced. Once they are, they will be responsible for approving the Master Innovation and Development Plan, which Sidewalk Labs is expected to complete for Waterfront Toronto and Alphabet’s boards’ approval in the spring.

Correction: A previous version of this story included reference to the company Thinkwire.

#Sidewalk Labs #Waterfront Toronto

Sponsored Content

The real-world economic offshoots of sovereign AI

By Deborah Aarts
Illustration of a plane flying above a mailbox

Increasing healthcare access across Canada

By Deborah Aarts

What it takes to lead a frontier firm

By Deborah Aarts
Paid promotional content

Loading...

Thanks for sharing!

You have shared 5 articles this month and reached the maximum amount of shares available.

Close
This account has reached its share limit.

If you would like to purchase a sharing license please contact The Logic support at [email protected].

Close
Want to share this article?

Upgrade to all-access now

Close
Gift the full article!

You have gifted 0 article(s) this month and have 5 remaining.

Copy link and gift
Copy Link
Email to a friend
Send Email
Gift on Social Media

Recipients will be able to read the full text of the article after submitting their email address. They will not have access to other articles or subscriber benefits.

Toronto's eastern waterfront.

Most Popular This Week

An image of a man wearing a white collared shirt. He is standing against a brown background with the word HOOPP written on it. He is slightly smiling and looking directly at the camera.
Exclusive

What the Maple 8’s first chief AI officer is up to

By Murad Hemmadi
A shot of Mark Carney standing in a dark suit in front of a large, red excavator on a construction site. Carney is looking behind him, off-camera.
News

Canada needs an investment ‘hub’ as Carney steps up push for foreign money, says federal agency

By David Reevely
Construction workers walk across a deck as a crane lifts a large bundle of steel rebar into place at a construction site.
The Big Read

Inside Bell’s all-Canadian plan to power the country’s AI future

By Murad Hemmadi
Melbourne city center skyline with views towards the Evan Walker pedestrian bridge flanked by Eureka Tower and far left Crown Casino on Melbourne Southbank.
News

Australia’s pension giant has $10B ready to invest in Canada. It wants something from Ottawa first

By Catherine McIntyre

In-depth, agenda-setting reporting

Great journalism delivered straight to your inbox.

Commentary

Carmichael: Canada’s culture of risk aversion has created an economic doom loop

By Kevin Carmichael

Briefing

TC Energy says North American natural gas demand is growing much faster than previously expected

By Meghan Potkins   |   Jul 30, 2026

Mississauga imposes data centre pause, as Toronto councillors scrutinize local projects

By Murad Hemmadi   |   Jul 30, 2026

A third of Canadian workers are using generative AI, but not for everything

By Murad Hemmadi   |   Jul 30, 2026

Best business newsletter in Canada

Get up to speed in minutes with insights and analysis on the most important stories of the day, every weekday.

Exclusive events

See the bigger picture with reporters and industry experts in subscriber-exclusive events.

Membership in The Logic Council

Membership provides access to our popular Slack channel, participation in subscriber surveys and invitations to exclusive events with our journalists and special guests.

Recent Popular Stories

The Big Read

Inside Bell’s all-Canadian plan to power the country’s AI future

By Murad Hemmadi   |   Jul 22, 2026
Construction workers walk across a deck as a crane lifts a large bundle of steel rebar into place at a construction site.
News

Canada needs an investment ‘hub’ as Carney steps up push for foreign money, says federal agency

By David Reevely   |   Jul 23, 2026
A shot of Mark Carney standing in a dark suit in front of a large, red excavator on a construction site. Carney is looking behind him, off-camera.
Exclusive

What the Maple 8’s first chief AI officer is up to

By Murad Hemmadi   |   Jul 28, 2026
An image of a man wearing a white collared shirt. He is standing against a brown background with the word HOOPP written on it. He is slightly smiling and looking directly at the camera.
News

Canada’s cyberspy agency exempts itself from Buy Canadian rules

By David Reevely   |   Jul 27, 2026
A shot of the sign outside Communications Security Establishment headquarters in Ottawa.
News

AI is helping bring Indigenous languages back from the brink

By Jonathan Feakins   |   Jul 24, 2026
A photo illustration featuring an archival photo taken in 1914 of a young Kwakiutl woman. Around her are shadowy images of totems and carved figures from her community on B.C.'s central coast. Super-imposed on the photos are words in Kwak'wala, the language of the Kwakiutl.
Commentary

Carmichael: The hard work of breaking down internal trade barriers is starting to pay off

By Kevin Carmichael   |   Jul 25, 2026

Canada's most influential executives and policymakers are reading The Logic

  • CPP Investments
  • Sun Life Financial
  • C100
  • Amazon
  • Telus
  • Mastercard
  • bdc
  • Shopify
  • Rogers
  • RBC
  • General Motors
  • MaRS
  • Government of Canada
  • Uber
  • Loblaw Companies Limited
logic-logo

Canada's Business and Tech Newsroom

100% human-crafted journalism

Newsroom

  • News Tips
  • AI Policy
  • Editorial Disclosures
  • Story Pitches

Company

  • About Us
  • Terms of Service
  • Privacy Statement
  • Corporate Information

Contact

  • Contact Us
  • Advertise
  • FAQs
  • Work at The Logic

© 2026 The Logic Inc. All Rights Reserved.

Trusted by leaders

Error

Account creation failed.

Please email us at [email protected].

Create Account

[wppb-register form_name=”cozmo-registration-form-for-modal”]

I do have an account
Login
or

[wppb-login]

I don’t have an account