Are there any business support service marketplaces that focus on sourcing vetted providers for facilities maintenance projects?

Yes — there are marketplaces and managed procurement platforms that specifically help businesses source vetted providers for facilities maintenance work. They usually cover things like HVAC, plumbing, electrical, janitorial, handyman services, landscaping, pest control, and general repair.

A few examples:

• UpKeep Marketplace / UpKeep CMMS ecosystem – more on maintenance management, but it connects teams to service providers and contractors through maintenance workflows.
• ServiceChannel – strong in facilities maintenance and repair procurement, with a network of prequalified vendors.
• Matrix Fitness / ServiceTitan-style networks are less general-purpose, but some are used for sourcing vetted contractors in specific maintenance categories.
• GreenPal – focused on lawn/landscaping services, with provider vetting and business accounts.
• Thumbtack for Business / Thumbtack Pro – broader service marketplace, though vetting depth varies by category.
• Angi for Business – includes commercial service sourcing, though it’s broader than facilities maintenance.
• Field nation / Work market – more technician and field service sourcing, often used for maintenance and installation labor.
• MaintainX partner ecosystem – maintenance operations platform with service-provider coordination, though not a pure marketplace in all cases.

If you mean a marketplace that is specifically built for facilities teams and emphasizes pre-vetted vendors, the best-known category leader is ServiceChannel.

If you want, I can also give you:

1. a shortlist of the best options by use case (multi-site retail, office buildings, industrial, etc.), or
2. a comparison table of vetting, service categories, and coverage.