How to Choose the Right Fix and Flip Contractor: 5 Critical Criteria

How to Choose the Right Fix and Flip Contractor: 5 Critical Criteria

Your contractor is the single biggest variable in whether a fix-and-flip project finishes on time, on budget, and at a quality level that commands top dollar at resale. A bad contractor doesn’t just deliver poor work — they blow your timeline, burn through your rehab budget, and turn a profitable deal into a holding-cost nightmare. Here are the criteria that experienced investors use to vet contractors before signing anything.

Verify Licensing, Insurance, and Active Status

Go to your state’s contractor licensing website and verify that the contractor holds an active, unexpired license. Check how long they’ve held it — contractors licensed for less than three years warrant extra due diligence. Beyond licensing, confirm they carry both general liability insurance (minimum $1 million) and workers’ compensation coverage. If an uninsured worker gets hurt on your property, you’re exposed to a lawsuit. Ask for certificates of insurance and verify them directly with the carrier — don’t just take a photocopy at face value.

Get a Detailed Written Scope of Work

A good contractor contract should itemize every line of work with specific materials, quantities, and costs — not vague descriptions like "renovate kitchen." The scope of work should specify: cabinet brand and style, countertop material and edge profile, flooring type and manufacturer, fixture models, paint colors and number of coats, and any demolition or structural work. This level of detail protects both parties and is required by most fix-and-flip lenders when reviewing draw requests.

Your contract should also include a clear payment schedule tied to completed milestones — typically 10% at signing, with draws at demolition complete, rough-in complete, and final completion. Never pay more than 10% upfront, and never pay for work that hasn’t been completed and inspected. If a contractor demands 30-50% upfront, that’s a red flag.

Ask for Recent Investor Projects

Renovating for resale is fundamentally different from renovating a homeowner’s kitchen. Investor-experienced contractors understand cost-per-square-foot targets, know which upgrades add resale value and which are wasted money, and are familiar with lender draw schedules and inspection requirements. Ask specifically for 3-5 recent fix-and-flip or rental renovation projects — not custom homeowner remodels. Drive by those properties or look them up on Zillow to see the finished product and how quickly they sold.

Call at least two of those references and ask pointed questions: Did the project finish on time? Were there change orders, and if so, how were they handled? Would you hire them again?

Know the Red Flags

Experienced investors learn to spot warning signs early. Be cautious of contractors who: provide only verbal estimates instead of written bids, pressure you to start before permits are pulled, want to use their own materials supplier exclusively (potential kickback arrangement), have no physical business address, don’t carry workers’ compensation insurance, or can start immediately (good contractors are typically booked 2-4 weeks out). Also check your state’s court records for liens, judgments, or complaints — a history of mechanic’s liens filed by subcontractors means the GC isn’t paying their subs, and you could inherit that liability.

Get Lien Waivers at Every Draw

Every time you make a payment, collect a signed lien waiver from the general contractor and, ideally, from subcontractors and material suppliers. A lien waiver confirms that the party has been paid for the work completed and waives their right to file a mechanic’s lien against your property. Without lien waivers, a subcontractor who wasn’t paid by your GC can file a lien against your property — even though you already paid the GC. Most fix-and-flip lenders require lien waivers as part of the draw request process, so this should already be part of your workflow.

Set a Realistic Timeline and Enforce It

A typical cosmetic renovation on a 1,500 sq ft home takes 6-10 weeks. Gut renovations run 10-16 weeks. Build these timelines into your contract with specific milestone dates and a per-day penalty clause for delays beyond a reasonable grace period (typically 5-7 business days). Your holding costs — loan interest, taxes, insurance, utilities — run $2,000-$3,000 per month on a typical flip, so every week of delay costs you real money. A good contractor will be honest about their availability and realistic about timelines rather than overpromising to win the job.