What is the best way to vet a new contractor before adding them to a rental vendor list?

Verify license and insurance before you talk about price

For any trade your state licenses (electrical, plumbing, HVAC, and general contracting in most places), look up the license number on the state board's website rather than trusting a number on a business card. Check that it is active, that the name matches, and whether there are disciplinary actions. Unlicensed work on a rental can void insurance coverage and create liability if a tenant is injured, so this step is not optional no matter how good the referral was.

Ask for a certificate of insurance showing general liability and, if they have employees, workers' compensation. Call the insurer listed on the certificate to confirm it is current. A one-person handyman may legitimately lack workers' comp, but they should still carry liability coverage. If a contractor bristles at these requests, that tells you something about how they will handle a dispute later, and it is better to learn it now.

Keep reading: How do small landlords track tenant maintenance requests without losing paperwork?, What information should a tenant include when submitting a maintenance request online?, Why do maintenance photos matter when landlords assign repairs to outside vendors?. See how RentFixr helps you rental maintenance request tracking for landlords.

Ask the questions that reveal how they actually work

The useful questions are operational, not salesy. How do you handle after-hours calls, and what is your rate for them? Do you send photos of completed work? Who does the work, you or a subcontractor? How do you communicate with tenants about arrival windows? What is your typical lead time for non-urgent jobs? Do you warranty labor, and for how long? The answers tell you whether they fit the way you run maintenance, which matters more than the hourly rate. Related: When should a landlord respond to an urgent maintenance request from a tenant?

Ask for two or three landlord or property manager references, specifically people who have used them for repeat work rather than one large project. When you call, ask about reliability on small jobs, whether estimates held, and how the contractor behaved in a tenant's home. A contractor who is excellent at remodels may be a poor fit for a portfolio that generates twenty small tickets a month and needs someone who answers the phone. Related: How do small landlords track tenant maintenance requests without losing paperwork?

Run a first job that is small, real, and observable

Never make a new vendor's first job an emergency or a large project. Choose something bounded: a faucet replacement, a bathroom fan, a section of drywall. Give them the same information you would give an established vendor, including photos and tenant contact details, and then watch how they handle scheduling, communication, and cleanup. Ask the tenant afterward how the visit went; tenants notice things landlords never see, like whether shoes came off and whether the work area was left clean. Related: What information should a tenant include when submitting a maintenance request online?

Compare the invoice against the estimate and against what similar work has cost you before. A small overage with a clear explanation is normal; a large one with no warning is a pattern that will repeat. Pay promptly if the job was good. Contractors prioritize landlords who pay on time, and that priority is worth more than any negotiated discount when you need someone on a holiday weekend.

Keep the vendor record current, not just the phone number

A vendor list is a living document. For each contractor, keep the license number and expiration, the insurance certificate date, hourly and emergency rates, trades they cover, service area, preferred contact method, and a running note on every job they have done for you with cost and outcome. Set a reminder to re-verify license and insurance annually, because both lapse quietly and nobody calls to tell you.

Over a year or two you will see which vendors are fast, which are careful, and which are neither. Rank them by trade, keep a backup for every critical trade, and retire vendors who stop responding rather than leaving them on the list. When each maintenance request already shows the vendor assigned and the history behind it, the list stops being a spreadsheet you dread and becomes the reason repairs go smoothly. Related: Why do maintenance photos matter when landlords assign repairs to outside vendors?