House flipping looks simple from the outside: buy a house, fix it up, sell it for more. The reality in a high-cost market like San Diego is a tighter, more disciplined game than the TV version suggests. This briefing walks through what a flip actually is, how the money works, and, using a realistic higher-end San Diego deal, exactly where the profit comes from and where deals go wrong.
What a flip actually is
Buy below value. Renovate to raise value. Resell for profit, fast.
You earn the spread between your all-in cost and the after-repair value (ARV), not on the market going up. The whole game is buying right, then controlling cost and time. It comes down to three levers:
- Buy right. Acquire below the post-renovation value. The profit is made the day you buy.
- Add value. A focused renovation lifts the home to its ARV. Scope and budget discipline matter most.
- Sell fast. Every month of holding costs money. Speed to resale protects the margin.
The five phases of a flip
- Find & analyze. Source below market. Estimate ARV from comps, then work back to a maximum offer.
- Finance & acquire. Hard-money loan, close fast (1–2 weeks). Most San Diego flippers finance rather than pay cash.
- Renovate. Manage the contractor to a fixed scope and budget. Keep a contingency reserve.
- List & market. Stage, photograph, and list at ARV. San Diego homes sell in roughly 3–4 weeks.
- Sell & settle. Pay off the loan, commissions, and closing. What remains is your profit.
Typical full cycle: 4 to 8 months.
How the money works
Leverage. A hard-money lender funds roughly 75–80% of purchase plus up to 100% of renovation, at about 9–14% interest in 2026 plus 2–3 points. You bring the down payment, closing, and carrying costs in cash. That is your capital at risk.
Carrying costs. Every month you hold the property you pay interest, property taxes, insurance, and utilities. Time is a direct cost, so speed protects profit.
The two screens. The classic 70% Rule says pay no more than 70% of ARV minus renovation. High-cost San Diego often stretches to 78–82%, accepting thinner margins for access to deals.
A real example: a higher-end San Diego flip
Buy $1.30M · Renovate $215K · Resell $1.875M · 6-month hold, hard-money financed.
| Line item | Amount |
|---|---|
| Sale price (ARV) | $1,875,000 |
| Purchase price | $1,300,000 |
| Acquisition closing (~1%) | $13,000 |
| Renovation + 10% contingency | $236,500 |
| Financing: points + interest | $90,988 |
| Holding: taxes, insurance, utilities, staging | $18,770 |
| Selling: commission + closing | $112,500 |
| Total project costs | $1,771,758 |
| Net profit | $103,242 |
Read it this way. A sale of $1.875M against roughly $1.77M all-in cost means profit lives in a narrow band, so the purchase price and the ARV estimate have to be right. Financing and selling costs together (~$200K) are as large as the renovation itself.
What the investor actually makes
| $103K net profit on a single 6-month project | 27% cash-on-cash return on ~$383K invested | 5.5% net margin of the sale price, which is thin |
Annualized, that's roughly 54% if capital recycles on schedule. The honest read: real money per deal, but a thin margin. Discipline on price and timeline is what turns the spread into profit.
Where deals go wrong
- Overpaying. The single biggest killer. A 5% miss on purchase price or ARV can wipe out most of the profit.
- Renovation overruns. San Diego labor runs above national averages and permits can take months. Pad both budget and timeline.
- Holding too long. Each extra month adds ~$11K in interest plus carrying costs. Three months can erase a third of the profit.
- Market softening. 2026 margins are the tightest since the last downturn. A flat resale market compresses an already-thin spread.
The bottom line
Flipping still works in San Diego, but the easy money is gone. Success comes from three things: buy below value, run a tight renovation, sell fast. Get those right and the numbers work even in a tighter 2026 market.
Here's the deal screen for the example above (ARV $1.875M, reno $215K):
| Screen | Figure |
|---|---|
| 70% Rule max offer | $1,097,500 |
| SD-adjusted (80%) max offer | $1,285,000 |
| Our purchase as % of ARV | 69% |
The next step is the underwriting. We plug any real property into the same model and see instantly whether it pencils, before you commit a dollar. If you're weighing a flip in San Diego, let's run your numbers together or call Richard Ricasata directly at (619) 318-3400.