How to find, vet, hire, and manage the contractors who will make or break your flip.
Your contractor team is the engine of your flipping business. A great general contractor or a reliable crew of specialty trades can turn a rough property into a market-ready home in 8 to 12 weeks. A bad contractor can blow your budget, destroy your timeline, and produce work so poor that it fails inspection or turns off buyers. Finding and managing contractors is a skill — and like every skill, it can be learned systematically.
The best contractors rarely advertise. They are busy, they get work through referrals, and they do not need to market themselves. Your job is to tap into the networks where these contractors are already known.
1. Referrals from other investors. This is the single best source. Attend local real estate investor meetups, REIA (Real Estate Investors Association) meetings, and networking events. Ask experienced flippers who they use and who they avoid. A contractor who has successfully completed multiple flips for other investors is a proven commodity.
2. Local building supply houses. Visit the lumber yards, tile showrooms, and plumbing supply houses that serve contractors (not big-box stores). The staff at these businesses know every contractor in town and can tell you who is reliable, who pays their bills, and who does quality work. Ask for three or four names.
3. Job sites. When you see a property being renovated in your target neighborhood, stop and introduce yourself. Talk to the crew. If the work looks good and the job site is organized, ask for the contractor's contact information. A well-managed job site is one of the best indicators of a quality contractor.
4. Online platforms. HomeAdvisor, Angi (formerly Angie's List), Thumbtack, and Houzz can help you find contractors, but use these as a starting point, not as your vetting process. Online reviews can be manipulated, and many of the best contractors do not maintain profiles on these platforms.
5. Subcontractor referrals. If you already have a good electrician or plumber, ask them which general contractors they enjoy working with. Trades people know who runs organized, professional job sites and who runs chaotic ones.
Finding names is easy. Vetting is where the real work happens. Every contractor you consider hiring should pass all of the following checks.
License verification. Verify the contractor's license through your state's licensing board website. Confirm the license is active, the classification covers the work you need, and there are no disciplinary actions on record. In states that do not require state-level licensing, check for required city or county registrations.
Insurance certificates. Request a Certificate of Insurance (COI) directly from the contractor's insurance agent — not from the contractor. You need to verify:
If a contractor is not insured and a worker is injured on your property, you could be held liable. This is a non-negotiable requirement.
References. Ask for at least three references from projects completed in the last 12 months. Call every reference and ask:
Portfolio review. Ask to see photos of completed projects — ideally before-and-after images of flips similar to yours. If possible, visit a current job site to see the contractor's work in progress. Pay attention to the details: clean cuts, straight lines, consistent grout lines, properly aligned cabinets, and neat caulking.
Better Business Bureau and court records. Check the BBB for complaints and your county court records for lawsuits. One complaint in 10 years is not a red flag. Multiple complaints or lawsuits about the same issues (incomplete work, poor quality, refusal to fix defects) are a disqualifier.
Getting bids right is critical. A poorly structured bid process leads to inaccurate pricing, scope misunderstandings, and conflict during the project.
Step 1: Prepare a written scope of work. Before requesting any bids, create a detailed, room-by-room scope of work that specifies every task, material, and finish. This document is the foundation of the bid process.
Step 2: Get three bids. Three is the minimum. Provide each contractor with the identical written scope and walk the property with them individually. Answer their questions honestly and document any assumptions they make.
Step 3: Compare bids systematically. Do not just compare the bottom-line number. Compare:
Red flags in bids:
Never start a project without a signed contract. A proper contractor agreement should include the following elements.
Scope of work. The complete, detailed SOW should be attached to or incorporated into the contract. This is the definitive description of what work will be performed.
Contract price. The total price for all work described in the SOW, broken down by category or phase.
Payment schedule. Payments tied to completed milestones — never to calendar dates. A recommended structure:
Never pay more than 10 percent upfront. A contractor who demands 25 or 50 percent before starting work is either undercapitalized or unreliable — both are problems.
Timeline. Specific start date, milestone dates, and completion date. Include a daily penalty clause for completion beyond the agreed date — typically $100 to $250 per day. This gives the contractor financial incentive to stay on schedule.
Change order process. Any change to the scope must be documented in a written change order that specifies the work, cost impact, and timeline impact. Both parties must sign before the changed work begins. Verbal change orders should be explicitly prohibited in the contract.
Warranty. A minimum one-year warranty on workmanship. The contractor should agree to return and fix any defective work at no charge within the warranty period.
Dispute resolution. Specify how disputes will be resolved — mediation, arbitration, or litigation. Mediation is typically the fastest and least expensive option.
Termination clause. Either party should be able to terminate the contract with written notice. Specify how completed work will be paid for and how the project will be transitioned if the relationship ends.
Hiring the right contractor is only half the equation. Managing the relationship effectively is what keeps your project on track.
Communicate consistently. Establish a communication rhythm — a daily text or photo update and a weekly in-person site meeting. Set expectations for response times. Most contractors prefer text messages for quick questions and phone calls for complex discussions.
Be decisive. Contractors need answers quickly. When they ask you to choose between two tile options or approve a plumbing approach, respond within hours, not days. Your indecision costs them time and money, which costs you time and money.
Inspect before you pay. Before releasing any milestone payment, visit the site and verify that the work has been completed as specified in the SOW. Take photos. If work does not meet the agreed standard, withhold payment until corrections are made.
Address problems immediately. If you notice work that does not match the SOW, a schedule slip, or quality concerns, address them the same day. Small problems that go unmentioned become large problems that are expensive to fix.
Pay on time. When a milestone is completed and inspected, pay immediately. Contractors who are paid promptly prioritize your project. Contractors who have to chase payments deprioritize your project in favor of clients who pay on time.
Despite your best efforts, disputes can arise. Here is how to handle them without destroying the project or the relationship.
The real competitive advantage in house flipping is a reliable contractor team that you use on every project. Long-term relationships benefit both parties.
Benefits for you: Accurate bids (they know your standards), faster project starts (they reserve time for your projects), priority scheduling (you are a repeat customer), and fewer surprises (they know what you expect).
Benefits for the contractor: Steady work pipeline, predictable revenue, efficient project management (they know your process), and a client who pays on time.
To build long-term partnerships:
Use this checklist when meeting a contractor for the first time. Cover every item before requesting a bid.
Your contractor team is the most important asset in your flipping business — more important than your financing, your deal-finding ability, or your market knowledge. A great contractor team turns good deals into great profits. A bad one turns great deals into losses.
Invest the time to find, vet, and build relationships with quality contractors. The effort you put in upfront will pay dividends on every project that follows.