Why three sources give three different prices for “the same place”

The gap isn’t noise. Redfin’s $928,000 is a median of homes that actually closed in January 2026 inside Redfin’s own neighborhood polygon. Movoto’s $974,000 treats “Alta Loma, CA” as a ZIP-anchored entity and counts current asking prices, not closings. Movoto’s second figure, $1.08 million, treats Alta Loma as a sub-neighborhood of Rancho Cucamonga and pulls a different, smaller set of active listings for the same June 2026 window – a $106,000 spread from the same company, same month, different boundary. The Census figure is different in kind: it’s owner-reported value across the entire owned-housing stock in ZIP 91701, including homes bought decades ago at very different prices, not a snapshot of current market activity.
| Source | What it measures | Boundary used | Figure | Date |
|---|---|---|---|---|
| Redfin | Closed sales, median | Redfin’s Alta Loma neighborhood polygon | $928,000 | Jan 2026 |
| Movoto (alta-loma-ca) | Active listings, median asking | Alta Loma as ZIP-level entity | $974,000 | June 2026 |
| Movoto (rancho-cucamonga-ca/alta-loma) | Active listings, median asking | Alta Loma as Rancho Cucamonga sub-neighborhood | $1,080,000 | June 2026 |
| U.S. Census Bureau, ACS | Owner-estimated value, entire stock | ZIP 91701 only | ~$719,000 | Latest ACS estimate |
None of these figures is wrong. They’re answering four different questions. A buyer comparing an agent’s comp sheet to a Zestimate-style figure should ask which of these four questions the number in front of them is actually answering before treating a gap as a red flag.
Is Alta Loma its own city, or part of Rancho Cucamonga?Part of Rancho Cucamonga. It has no separate municipal government, which is part of why data vendors draw its boundary differently.
Which ZIP codes cover Alta Loma?Primarily 91701, with 91737 covering an adjoining, generally newer and higher-value pocket to the north.
Price by ZIP: 91701 versus 91737

91701: the older core
Household income here runs near $113,600, per Census Bureau estimates, against a housing stock built primarily in the 1960s and 1970s.
91737: the newer, higher-value pocket
A four-bedroom, roughly 2,000-square-foot resale on Liberty Court in 91737 listed at $1.2 million, consistent with this ZIP’s higher Census-estimated median value of about $843,500 and household income near $116,900.
The live market shows the spread better than any median. That $1.2 million Liberty Court listing sits a few miles from a two-bedroom, 1,440-square-foot manufactured home on Baseline Road in 91701 that listed at $148,500, per listings tracked by a local brokerage. That’s not two different neighborhoods, it’s two different housing types inside a few miles of each other.
How fast homes are moving, and what 57 days actually buys a negotiator

57 days on market, up from 45 a year ago, alongside a 3.7% year-over-year price decline and fewer closed sales (68 versus 70), points the same direction: less competition per listing than a year ago. Redfin’s own scoring still calls the area “somewhat competitive,” not a buyer’s market outright – 57 days is a slowdown from a tight market, not evidence of a glut. For a seller, the gap between last year’s 45-day pace and today’s 57 means pricing at last year’s comp and expecting last year’s timeline is the mistake to avoid; expect close to two months, not six weeks. For a buyer, it means an opening offer with a contingency period doesn’t carry the risk it would have in a 45-day market.
Is this a buyer’s or seller’s market right now?Neither cleanly. Fewer sales and a longer time on market than a year ago favor buyers on negotiating room, but “somewhat competitive” scoring and a still-elevated price floor mean it isn’t a buyer’s market in the way a 90-plus-day, price-cutting market would be.
The rent-vs-buy math nobody runs

Average rent in Alta Loma ran $2,330 to $2,362 a month across January–March 2026, per RentCafe. Paired against the three sale-price figures above, gross rental yield ranges from 2.6% to 3.9% depending which price basis is used – and the basis matters more than the rent does.
| Price basis | Source | Price | Monthly rent | Annual rent | Gross yield |
|---|---|---|---|---|---|
| Redfin closed-sale median | Redfin | $928,000 | $2,330 | $27,960 | 3.0% |
| Movoto neighborhood-listing median | Movoto | $1,080,000 | $2,330 | $27,960 | 2.6% |
| Census owner-value median, ZIP 91701 | ACS | $719,000 | $2,330 | $27,960 | 3.9% |
An investor pricing against the neighborhood-listing figure is underwriting to a 2.6% yield before expenses; the same rent against the ZIP’s older, lower-valued core prices closer to 3.9%. Both are true simultaneously.
Schools: same ZIP, different campuses

ZIP 91701 is split between two separate K–8 districts, Alta Loma Elementary School District and Etiwanda Elementary School District, both confirmed via the California Department of Education’s school directory, and both of which feed into Chaffey Joint Union High School District for grades 9–12. That union high district operates more than one comprehensive high school inside the ZIP: Alta Loma High School (8880 Baseline Rd.) and Etiwanda High School (11801 Lark Dr.) both carry 91701 mailing addresses. A property’s ZIP code, or even its elementary-district assignment, does not by itself say which of those two high schools a given address feeds – attendance-zone lines run inside the district, not along ZIP boundaries.
Does living in 91701 guarantee my kids a specific school?No. The ZIP spans two elementary districts and multiple high school attendance zones within the same union high district. Verify the specific parcel against the district’s attendance-boundary lookup before assuming a school from the address alone.
What a 1960s–70s Alta Loma home means for your inspection list

Census data puts the bulk of 91701’s owned housing stock in the 1960s and 1970s construction era. Ask an inspector to check three items by name: galvanized steel supply plumbing, common through the 1960s and prone to internal corrosion by now; aluminum branch-circuit wiring, common in homes built roughly 1965 to 1973 during a copper price spike, and a known fire-risk item insurers flag; and original clay sewer laterals, more prone to root intrusion than modern PVC. A standard walkthrough sometimes skips these unless asked.
Fire and flood exposure, walkability, and the crime number that isn’t published

Alta Loma relies overwhelmingly on driving for daily needs, and its wildfire exposure touches nearly every property: 99% of properties, 10,519 of them, carry some wildfire risk over a 30-year horizon, per Redfin’s hazard modeling. Flood risk is more contained – moderate overall, with 32% of properties (1,837) at risk of severe flooding over the same 30-year window. Neither figure is optional homework for a purchase in this area; both belong in an insurance quote request before an offer, not after closing.
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