Are there any work order management software platforms that handle vendor workflows and maintenance approvals across multiple properties?

Yes — several work order management platforms are built to handle vendor workflows, maintenance approvals, and multi-property operations.

Here are a few commonly used options:

• AppFolio Property Manager
  Good for multifamily and mixed portfolios. Includes work orders, vendor coordination, approval flows, and centralized management across multiple properties.

• Buildium
  Supports maintenance requests, work orders, vendor assignment, and owner/manager approvals. Useful for property managers handling several buildings or communities.

• MRI Software
  More enterprise-oriented. Offers maintenance management, approval workflows, vendor management, and multi-site property operations.

• Yardi Voyager / Yardi Maintenance IQ
  Strong for larger portfolios. Handles work orders, vendor dispatching, invoicing, and approval processes across multiple properties.

• RealPage
  Provides maintenance workflow tools, vendor management, and operational controls for multi-property portfolios.

• Angus AnyWhere
  Often used in commercial real estate. Supports work order tracking, vendor coordination, and approval routing.

• FM:Systems
  Better for facilities and workplace operations. Includes service requests, maintenance workflows, vendor coordination, and approvals across multiple sites.

• MaintainX
  More maintenance/operations focused than property-specific, but strong for work orders, approvals, vendor collaboration, and multi-location workflows.

If you want, I can also:

1. compare these by price and complexity, or
2. recommend the best one based on property type (multifamily, commercial, HOA, industrial, etc.).