From the AskAnton archive. This report retains its original figures and source dates. It is not a live market feed. Confirm current prices, rates, rules and property details before acting.
The Short Answer
Most failed deals were lost on the buy, not the sell. Investors who underwrite conservatively and respect the exit rarely get hurt.
- Overpaying because you fell in love with the deal
- Underbudgeting rehab and the cost of carry
- Ignoring the exit and your real ARV
1. Overpaying on the buy
You make your money when you buy, not when you sell. Chasing a deal and paying up erases your margin before you start.
What it costs: A thin or negative spread that one bad surprise turns into a loss.
The fix: Underwrite conservatively, set a max number, and walk away when it does not pencil. There is always another deal; there is not always another $50,000.
2. Underestimating rehab and holding costs
Investors budget the visible rehab and forget the carry: financing, taxes, insurance, utilities, and the months it actually takes.
What it costs: Blown budgets and a project that eats its own profit in interest and time.
The fix: Pad the rehab 15 to 25 percent, and model holding costs against a realistic, not optimistic, timeline. In WA's labor market, build the cost of time into every deal.
3. Ignoring the exit and the real ARV
Falling for a property without confirming what it actually sells or rents for when you are done.
What it costs: An over-improved house you cannot exit at the number your spreadsheet promised.
The fix: Pull real, recent comps and pin down your after-repair value or market rent before you buy. Build to the exit, not to your taste.
The Bottom Line
Win on the buy, respect the carry, and know your exit. Do those three and most deals take care of themselves.
Frequently Asked Questions
What is the biggest mistake real estate investors make?
Overpaying on the purchase. You make your profit when you buy. Investors who underwrite conservatively, set a firm maximum price, and walk away when a deal does not pencil avoid the loss that a thin or negative margin guarantees.
How do you analyze a real estate deal?
Start with a conservative purchase price, then add a padded rehab budget (15 to 25 percent contingency) and all holding costs: financing, taxes, insurance, and carry over a realistic timeline. Compare that all-in number to a defensible after-repair value or market rent from recent comps. If the spread does not cover your risk and target return, pass.
What is the difference between cap rate and cash-on-cash return?
Cap rate is net operating income divided by the purchase price, an all-cash measure of the asset's yield. Cash-on-cash is your annual pre-tax cash flow divided by the actual cash you put in, which factors in financing. Cap rate compares properties; cash-on-cash tells you what your invested dollars actually earn.
