Sierra Vista, AZ Housing Market Forecast — September 2026
Typical home value $263,531 as of August 2026 · Cooling
Blue: typical Sierra Vista home value (Zillow ZHVI, smoothed and seasonally adjusted), last 10 years. Amber dash: forecast path through September 2027; dotted lines mark the 80% confidence range, which widens with the horizon.
Why the model sees it this way
Sialim's model forecasts the typical Sierra Vista home value will hold near flat in September 2026, from $263,531 to about $263,515. The 80% confidence range runs from $263,131 to $263,887.
Prices have been slipping, down an average of 0.16% per month over the past three months, and the market is down 0.2% from a year ago.
The 30-year mortgage rate sits near 6.7% (restrictive for affordability); for-sale inventory is about even with a year ago (+1%); national unemployment is 4.1%. These conditions feed into this metro's forecast, since the macro-augmented model beat the price-only model in backtesting here.
Over the most recent six-month test window, this model's predictions for Sierra Vista were off by 0.5% on average. Smaller is better; anything under 1% is strong for monthly home values.
How this compares with Zillow's forecast
| Horizon | Sialim | Zillow's forecast |
|---|---|---|
| Next month | -0.01% | 0.00% |
| Three months | +0.41% | +0.30% |
| Twelve months | +0.43% | -0.60% |
The two forecasts disagree on Sierra Vista's twelve-month direction. Sialim projects +0.43%; Zillow's published forecast shows -0.60%. Disagreements like this get graded here as actuals arrive. Zillow forecast © Zillow, shown for comparison; horizons are aligned to the nearest published month. Agreement or disagreement between the two models is a useful signal either way.
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Frequently asked questions
What is the Sierra Vista home value forecast for September 2026?
$263,515, a -0.01% change from the latest value of $263,531. The 80% confidence range is $263,131 to $263,887.
Is the Sierra Vista housing market cooling or heating up?
Sialim classifies Sierra Vista as "Cooling". Prices have been slipping and Sialim's model forecasts further softness.
What is the Sierra Vista home price forecast for 2027?
Sialim's model projects $264,656 by September 2027, a +0.43% change from today's $263,531. The 80% range is $257,303 to $273,250; year-ahead forecasts carry much wider uncertainty than next-month calls.
How accurate is this forecast?
Over the most recent six-month test window, this model's Sierra Vista predictions were off by 0.5% on average.
Model details
Forecasts come from Sialim's proprietary forecasting engine, which runs several competing model specifications for every metro, backtests them against what actually happened, and publishes the winner for each horizon. Trained on 223 monthly observations (2008-02-29 to 2026-08-31). This metro's market heat index reads 26, with 0.2% of listings showing a price cut. See the methodology for how forecasts are built, and the ZHVI guide for what the underlying index measures.
Forecasts are model output, not advice. Data: Zillow ZHVI (© Zillow), Freddie Mac via FRED, US Bureau of Labor Statistics via FRED.