Sullivan, WI 53178 housing market
Data through Aug 2026 · Seller's market · leverage 3
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Home Value
$439,258
+5.8% vs. a year ago
Buyer Leverage Score
3
Sep 2026
Months of Supply
0.5 months
Aug 2026
Days on Market
80 days
Sep 2026
Price Cut %
0.0%
Sep 2026
Sale-to-List Ratio
103.1%
Aug 2026
Mtg Payment as % of Income
34%
Aug 2026
Overvalued %
15%
Aug 2026
Expected Disaster Loss
$97
Dec 2025
What this means
- Valuation. Prices are 15% above what local incomes have historically supported (this area's pre-2020 price-to-income ratio).
- Prices. Home values are up 5.8% over the past year (U.S.: +1.2%).
- Supply. Listings are 90% below the 2017-19 norm and falling (−86% vs. a year ago): still a tight market.
- Negotiating. Buyer leverage is low (3/100; U.S.: 54): homes typically sell at or above asking (103.1% of list); 0% of listings had a price cut (U.S.: 26%).
- Affordability. A mortgage on the typical home takes 34% of the median household income (U.S.: 35%); it takes about $112k a year to keep the payment at 30% of gross pay. That includes about $1,244 a year for home insurance (U.S.: $1,790).
- Disaster risk. FEMA expects about $97 a year in natural-disaster damage per $100k of building value (U.S.: $155), mostly from flooding.
- Outlook. Leaning up: likely −4% to +12% over the next 12 months (78% chance of a rise).
Next 12 months
Leaning up
Prices are more likely to rise than fall over the next year. Likely change: −4.3% to +12.0% (80% range; middle estimate +4.9%), chance of a rise 78%, of a 5%+ drop 8%.
HouseVane's model, refit every month on local market signals and national ones, trained only on data known at the time. How accurate it has been.
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Other ZIP codes in Jefferson County, WI
| Area | Home value | 1-year change | Buyer leverage |
|---|---|---|---|
| Fort Atkinson, WI 53538 | $331.8K | +4.4% | 21 |
| Watertown, WI 53094 | $323.9K | +5.3% | 24 |
| Jefferson, WI 53549 | $348.6K | +5.9% | 58 |
| Lake Mills, WI 53551 | $430.8K | +4.0% | 20 |
| Waterloo, WI 53594 | $363K | +5.6% | 28 |
| Johnson Creek, WI 53038 | $420.1K | +5.4% | 12 |
| Ixonia, WI 53036 | $479.4K | +5.6% | 35 |
| Palmyra, WI 53156 | $375.3K | +5.6% | 17 |
| Helenville, WI 53137 | $467.8K | +7.4% | 0 |