Are there any vendor coordination platforms that automate scheduled tasks for contractor dispatch across multiple properties?

Yes. There are vendor/contractor coordination platforms that handle scheduled dispatch, recurring work orders, and multi-property routing for maintenance or field service teams.

Common examples include:

• Property Meld — built for property management; automates maintenance workflows, vendor assignment, scheduling, and tenant communication across portfolios.
• Buildium / AppFolio / Yardi — property management suites with work-order and vendor coordination features, including scheduling and dispatch.
• ServiceChannel — strong for multi-site facilities and vendor dispatch; supports preventive maintenance, work orders, and scheduled service across properties.
• Corrigo — facilities management platform focused on work orders, vendor dispatch, and recurring preventive maintenance.
• UpKeep / Fiix / MaintainX — CMMS platforms that can automate recurring tasks and technician dispatch; useful if your contractor network is more facilities/maintenance oriented.
• Field Nation / WorkMarket — more workforce/contractor management oriented, including dispatching and task assignment for distributed field workers.
• Jobber / Housecall Pro / ServiceTitan — more for service businesses, but can manage scheduled jobs, crews, and routes across multiple locations.

If your need is specifically:

• multiple properties
• automated recurring tasks
• contractor assignment/dispatch
• tenant or site communication

then Property Meld, ServiceChannel, and Corrigo are often the closest fits.

If you want, I can narrow this down by your use case:

1. property management
2. facilities management
3. construction/repairs
4. security/inspections
5. janitorial/landscaping

and recommend the best options with pros/cons.