STM-03
South Mountain · Phoenix, AZ 85041 · Single-family
- Asking
- $336,000
- Est. rent / mo
- $1,990
- Est. cap rate
- 4.17%
- Est. cash-on-cash
- -6.05%
- Est. DSCR
- 0.72
- Rent / price
- 0.592%
- $ / sq ft
- $248
- Est. cash flow / mo
- -$465
At the baseline set: 25% down, 6.75%, 30-year amortisation. Estimates.





Representative stock photography of Phoenix-metro residential product. These are not photographs of this asset — there is no such asset. This panel publishes a code and a submarket and nothing finer, because a plausible house number on a real street is a real house, and putting an invented price under a photograph of one is the thing this whole demonstration exists to avoid.
The read
Fronts an arterial. That is a rent question and an exit-liquidity question at once, and they point opposite ways: it lets fine, it resells narrow. Screen it on yield.
- Arterial frontage
- Block wall to street
- Detached shed
- No HOA
Facts
| Property type | Single-family |
|---|---|
| Units | 1 |
| Bedrooms / bathrooms | 3 / 2 |
| Living area | 1,355 sq ft |
| Lot | 7,841 sq ft |
| Year built | 1979 (47 yrs) |
| Stories | 1 |
| Parking | 1-car garage |
| Panel code | STM-03 |
| Location | South Mountain, Phoenix 85041 |
| Property tax / yr | $1,950 |
|---|---|
| Insurance / yr | $1,620 |
| HOA / mo | None |
| Other fixed / yr | $360 |
| Total est. operating / yr | $8,419 |
| HVAC installed | 2012 |
| Roof installed | 2011 |
| Water provider | City of Phoenix |
| FEMA flood zone | Zone X |
Underwrite it
Every figure below recomputes as you move an input. Nothing is rounded until it is printed, and operating expenses never include debt service — that separation is what makes the cap rate a property of the building and the cash-on-cash a property of your deal. All outputs are estimates.
Monthly cash flow
−$465
after debt service, before tax
Cap rate
4.17%
NOI ÷ purchase price
Cash-on-cash
-6.05%
cash flow ÷ cash invested
DSCR
0.72
NOI ÷ annual debt service
Where the gross rent goes
- Vacancy$1,433
- Operating$8,419
- Debt service$19,614
- Cash flow$0
| Gross scheduled income | $23,880 |
|---|---|
| Less vacancy & credit loss | −$1,433 |
| Effective gross income | $22,447 |
| Less fixed operating | −$3,930 |
| Less variable operating | −$4,489 |
| Net operating income | $14,028 |
| Less annual debt service | −$19,614 |
| Pre-tax cash flow | -$5,586 |
| Loan amount | $252,000 |
| Monthly principal & interest | $1,634 |
| Cash invested | $92,400 |
| Operating expense ratio | 37.5% |
| Break-even occupancy | 117.4% |
| Gross rent multiplier | 14.1 |
| Rent-to-price ratio | 0.592% |
Estimated figures produced by a model from the assumptions on the left. Not an offer, an appraisal, a loan quote or investment advice. Taxes, insurance and operating expenses are estimates; verify each before you commit capital.
What it would have to cost
The asking price against three solved thresholds
Rent and every operating line held exactly as stated; only the purchase price moves. Each mark is the price that solves one condition. Nothing here is a price history: this asset has none, and inventing one would be the easiest dishonest thing on the page.
| Condition | Price | vs ask | What it means |
|---|---|---|---|
| Current asking price | $336,000 | — | The number on the panel. Everything below is measured against it. |
| DSCR 1.00 | $240,500 | −28.4% | net operating income exactly covers the mortgage; cash flow is zero |
| Submarket median cap (4.13%) | $339,500 | +1.0% | the price at which this asset yields what its submarket already yields |
| Leverage turns (5.84%) | $240,500 | −28.4% | above this cap rate the loan adds to the return instead of subtracting from it |
Asking price carried on the submarket index
The current asking price projected backwards on the South Mountain median-price index. Arithmetic on two synthetic series — not an appraisal, not a price history and not a record of any transaction.
| Month | Index-adjusted ask |
|---|---|
| Oct 2024 | $323K |
| Nov 2024 | $327K |
| Dec 2024 | $330K |
| Jan 2025 | $332K |
| Feb 2025 | $331K |
| Mar 2025 | $328K |
| Apr 2025 | $324K |
| May 2025 | $318K |
| Jun 2025 | $315K |
| Jul 2025 | $315K |
| Aug 2025 | $316K |
| Sep 2025 | $320K |
| Oct 2025 | $324K |
| Nov 2025 | $327K |
| Dec 2025 | $328K |
| Jan 2026 | $328K |
| Feb 2026 | $326K |
| Mar 2026 | $325K |
| Apr 2026 | $325K |
| May 2026 | $328K |
| Jun 2026 | $332K |
| Jul 2026 | $335K |
| Aug 2026 | $336K |
| Sep 2026 | $336K |
Comparables
Rent is compared per unit, which is the only fair basis across a house and a fourplex. The subject sits 0.5% above the median of its five closest comparables.
| Asset | Submarket | Proximity | Ask | Sq ft | $ / sq ft |
|---|---|---|---|---|---|
| STM-03 Subject | South Mountain | — | $336,000 | 1,355 | $248 |
| STM-02 | South Mountain | Same submarket | $429,000 | 1,610 | $266 |
| STM-01 | South Mountain | Same submarket | $384,000 | 1,745 | $220 |
| ALH-01 | Alhambra | Same city | $372,000 | 1,512 | $246 |
| ALH-02 | Alhambra | Same city | $328,000 | 1,348 | $243 |
Sensitivity
What a five-percent move in price or fifty basis points on the rate does to the return. Computed at the baseline assumption set, not at whatever you have set the calculator to — it is a fixed reference.
Sensitivity — cash-on-cash by price and rate
Every other assumption held at the baseline set. A fixed reference, not tied to the calculator above. Estimates.
| Price \ Rate | 5.75% | 6.25% | 6.75% | 7.25% | 7.75% |
|---|---|---|---|---|---|
| $309,000−8% | -2.6% | -3.6% | -4.7% | -5.8% | -6.9% |
| $322,500−4% | -3.3% | -4.3% | -5.4% | -6.5% | -7.6% |
| $336,000ask | -3.9% | -5.0% | -6.0% | -7.1% | -8.3% |
| $349,500+4% | -4.5% | -5.6% | -6.6% | -7.7% | -8.9% |
| $363,000+8% | -5.0% | -6.1% | -7.2% | -8.3% | -9.4% |
Cash-on-cash-9.4% → -2.6%
What to check before you commit
HVAC replacement
The condenser dates to 2012 — 14 years old. Phoenix cooling loads shorten service life; a single-system replacement at current pricing is roughly $8,500. Reserve for it or price it into the offer.
Roof
Roof dates to 2011, 15 years old — inside the window most carriers will write without a surcharge.
Flood
FEMA Zone X. Outside the mapped special flood hazard area; a lender will not require separate flood coverage.
Water allocation
Served by City of Phoenix. Long-run Colorado River and Central Arizona Project allocation is a genuine risk to price on the metro’s growth edges over a 10-to-20 year hold. It is a discount-rate question, not a next-quarter question.
No HOA
No association. Nothing constrains rental use at the community level, and there is no fixed monthly charge in the expense line.