Working for House Flippers and Investors
Why this matters
A real estate investor can be the best customer a shop has, sending a house a month for years, or the one who leaves you holding three unpaid invoices on a property that just sold out from under your lien. The difference is rarely the person's character. It is whether you understood how their money works before you started, and whether your terms were written for a customer whose cash arrives on a lender's or a buyer's schedule rather than their own. Homeowner terms applied to an investor are how a profitable month turns into a collections problem.
The mental model: their clock is holding cost
A homeowner measures a repair in comfort and price. An investor measures it in days. Every day the property is not sold or rented carries holding cost: loan interest, often at short-term rates well above a mortgage, plus taxes, insurance and utilities. To a flipper, a repair that is cheaper but takes a week longer can cost more than it saves.
The other number they live by is after-repair value (ARV), what the house should sell or appraise for once finished. A common investor rule of thumb is to pay no more than about 70 percent of ARV minus the repair budget. That ratio is why the repair budget is fixed before you are called: it was set when they bought the house, and every overrun comes out of their margin directly.
Hold those two facts and most investor behavior becomes predictable. They want it fast, they want it at the number already in their spreadsheet, and they are paying you out of money that may not be theirs yet.
Not all investors are the same customer
| Type | What they want | Typical risk to you |
|---|---|---|
| Flipper, experienced | Speed, a clean inspection for the next buyer, repeatability | Low if terms are clear; they know how draws work |
| Flipper, first or second house | Lowest price, often surprised by costs | High: budget was never realistic, scope churns |
| Buy-and-hold landlord | Durable, low-maintenance fixes; tenant-ready | Moderate; better long-term payer, slower decisions |
| Wholesaler | Usually no work at all; wants a repair estimate to market the deal | Your estimate is used to sell a house you will never work on |
| Fund or large operator | Volume, standard scopes, process | Slow payment cycles, net-30 or longer, paperwork |
The wholesaler row deserves a line of its own. A wholesaler puts a house under contract and sells that contract to an end buyer. They often ask for a "quick estimate" to show buyers. Charge for it or decline it; free estimates for wholesalers are free marketing for someone else's deal. See related: Liability When a Buyer Relies on Your Estimate.
The four pressures, and what each one does to your job
Speed. Investors schedule trades back to back. If you slip a day, the drywall crew slips, then the painter, and the flipper's holding cost runs. Expect to be held to a start date harder than a homeowner would hold you. Do not commit to one you cannot meet.
Budget. The number exists before you arrive. The useful question is not "what's your budget" but "what did you budget for this line," which tells you whether the gap is a misunderstanding of scope or a number that was never realistic.
Scope churn. Investors change scope constantly: they walk the house with a partner, see a comparable listing, or hear from an agent that buyers want a different finish. Every change is legitimate. Every change undocumented is a dispute later, because the final invoice will not match the original quote and memory will favor the person paying.
Payment risk. This is the one that hurts. Many investors fund renovation through a hard-money loan, a short-term loan secured by the property, which releases renovation money in draws. The lender sends an inspector to confirm a stage of work is complete, then releases that stage's funds to the investor. If your work is not in a draw stage, or the draw inspection fails on another trade's work, your payment waits. Others pay "at closing," which means at resale, which means your pay depends on someone else buying the house.
Contract terms that protect you
Write investor terms as a separate template. Six provisions do most of the work:
- Deposit before materials. A deposit covering materials on order is standard and reasonable. A new investor who will not pay one is telling you how the final invoice will go.
- Progress payments tied to your milestones, not their sale. "Due within 7 days of rough-in passing inspection" is enforceable and predictable. "Due at closing" ties your cash to a buyer, a lender and a title company you have no contract with.
- Written change orders, priced before the change is done. Even a text message with the scope and the price, answered "approved," beats a verbal yes. The rule is simple: no price in writing, no work.
- A stated payment window and late terms, in whatever form your state allows. Some states cap interest or restrict late fees; check yours.
- Your lien rights, preserved. A mechanic's lien lets an unpaid contractor put a claim on the property itself. Most states require steps to preserve it: some require a preliminary notice early in the job (California is one), some do not, and filing deadlines after your last work run from roughly a couple of months to several months depending on the state. On a flip this matters double, because the investor intends to sell, and a sale closes over a recorded lien only if the lien is paid or bonded off. Learn your state's notice and filing deadlines, or ask your attorney once and write them into your process.
- Who you are contracting with. Investors usually buy through an LLC. Your contract should name the LLC as the customer and, for a new investor, ask for the individual's personal guarantee. An LLC that owned one house and sold it may have nothing left when you come to collect.
Lien and guarantee terms are where a short consultation with a construction attorney in your state pays for itself many times over. Walk in with your current homeowner contract and ask what to change for an LLC customer.
Reading a draw schedule before you agree to wait for one
If an investor says you will be paid from the draw, ask to see the draw schedule. It lists stages and what each releases. Check three things: which stage your work falls in, what else must be complete for that stage to pass, and how many days the lender typically takes to release after inspection. A plumber whose rough-in is paid only when "rough mechanicals, framing and insulation" all pass is waiting on two other trades. That is acceptable only if you priced and scheduled for it.
A worked comparison: two investors, the same job
Two investors each asked a plumbing shop to replace a drain line, a water heater and fixtures in a three-bedroom flip. The labor was the same 26 hours on both.
Investor A, five flips with this shop, LLC with a two-year history. She sent a written scope, accepted a deposit equal to the materials cost, and agreed to payment within 7 days of each inspection. Midway she added a second bathroom vanity by text; the shop priced it at 3 more hours plus the fixture, she replied "approved," and it went on the final invoice. Final paid on day 4 after the last inspection.
Investor B, first flip, LLC formed the month before. He asked to skip the deposit "since I'm paying from the draw," wanted payment at closing, and added the second vanity verbally on site. The shop held to its template: deposit for materials, progress payments on its own milestones, a personal guarantee, and a written change order. He signed all but the guarantee. The shop declined the job.
Two months later another trade told the shop that B's flip had gone over budget, the draw had stalled on failed framing, and three subcontractors were filing liens.
What decided it was not the job. Both scopes were identical. What differed was the payment structure: A's terms put the shop's cash on its own work, B's put it behind every other trade and a resale. The guarantee refusal was the signal that B expected the LLC to be the only thing a creditor could reach.
What would have changed the answer. Had B paid the deposit and accepted milestone payments but still refused the guarantee, the exposure would have shrunk to labor between milestones, often a reasonable risk on a first job if your state's lien law is strong and you have preserved it. In a state with short lien-filing windows or a preliminary-notice requirement you missed, that same exposure has no backstop, so the guarantee matters more there.
When investors are good, steady work
The experienced investor is one of the few customers who sends repeat volume without marketing, values a shop that shows up on day one, and refers you to other investors. They also teach you standard scopes: once you have done ten of their bathrooms, quoting the eleventh takes minutes.
The signs you have a good one: written scopes, a deposit without argument, payments that arrive inside the window, change orders answered in writing, and a willingness to hear "that will not pass inspection" without asking you to make it pass anyway. When an investor asks for the cheapest fix and you have to decide where the line is, that is a separate decision. See related: The Flipper Wants the Cheapest Fix That Passes.
The sign you do not: they argue about the deposit, everything is verbal, and the payment date keeps moving to "when it sells." Price the risk or walk.
References
- Your state's mechanic's lien statute, for preliminary notice requirements and filing deadlines (California Civil Code section 8000 and following, as one state's example)
- Your state's rules on contract interest and late fees for consumer and commercial contracts
- Lender draw schedules and inspection procedures, as provided by the investor's lender
- See related: The Flipper Wants the Cheapest Fix That Passes
- See related: Liability When a Buyer Relies on Your Estimate