I’ve included 3 choices for internet. I’ve used Sentex for 23 years, they are great.
https://www.bell.ca/Bell_Internet/Products/Fibre-to-the-home
https://www.rogers.com/consumer/internet
https://ssl.sentex.ca

Your natural gas and water is with Kitchener Utilities. Here’s the link to sign up
https://www.kitchenerutilities.ca/en/myaccount/Open-a-New-Account.asp

Electricity will be with Enova
https://enovapower.com/my-account/i-would-like-to-start-stop-move-my-account/

Property taxes are with the City of Kitchener
https://www.kitchener.ca/en/city-services/tax-payment-options.aspx

How to change address for Ontario Government documents
https://www.ontario.ca/page/change-my-address-ontario-services
https://www.ontario.ca/page/change-address-drivers-licence-vehicle-permit-and-health-card

How to change address for Federal Government
https://www.canada.ca/en/government/change-address.html

Mail forwarding service
https://www.canadapost.ca/cpc/en/personal/receiving/manage-mail/mail-forwarding.page

You’ll need to contact your insurance company before you move and get home insurance. I use these guys:
https://www.cooperators.ca/local/jeff-lyle-insurance

You’ll need a mover. I highly recommend these guys. AMJ Campbell. My brokerage uses them all the time.
https://amjcampbell.com/en/locations/cambridge/cambridge-movers

You’ll need to contact your insurance company before you move and get home insurance.

Let the bank, credit card company, other services you use, doctor, dentist, schools, employer know of your new address.

You’ll need to give 60 days notice if you are on a month to month tenancy.