Walworth County property record for 509 Alder Ave, Delavan, WI 53115
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.328 acres (14,288 sqft) |
| Owner | Individual Name on File |
| Last Sale | $95,000 (May 2012) |
| Tax Bill | $3,359 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | XAS 00003 |
| Primary APN | XAS 00003 |
|---|
| Lot Area | 14,288 sqft (0.328 acres) |
|---|
| Old Parcel Number | XAS00003 |
|---|---|
| Street Address | 509 ALDER AVE |
| City | DELAVAN |
| State | WI |
| Zip | 53115-1911 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 3 BLK 1 & N 1/2 LOT 4 BLK 1 ALLYNHURST SUBD. CITY OF DELAVAN |
| Legal Subdivision | ALLYNHURST SUB |
| Legal Block | 1 |
| Legal Lot Number | 3 |
| Jurisdiction | WALWORTH WI |
| Township / Civil Division | DELAVAN |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 702 |
509 Alder Ave is owned and occupied by an individual who bought it in May 2012.
Source: Walworth County records, as of February 9, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 509 ALDER AVE, DELAVAN, WI 53115-1911 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 10, 2012 · Amount on File |
| Deed Sale | May 10, 2012 · Amount on File |
| Prior Sale | Dec 27, 2011 · Amount on File |
| Deed Document Number | 837984 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 509 Alder Ave was $3,359 with a homeowner's exemption.
Source: Walworth County assessment roll, as of January 1, 2025
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Walworth County |
| Municipality | Delavan City |
| Unified School District | Delavan-Darien School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $3,359.00 Homeowner's exemption | $230,500 Land $44,500 Building $186,000 | $246,895 Land $47,665 Building $199,230 |
| 2023 | $3,185.00 (+0.63%) Homeowner's exemption | $153,900 (-) Land $39,600 Building $114,300 | |
| 2022 | $3,165.00 Homeowner's exemption | $153,900 Land $39,600 Building $114,300 | $200,073 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 509 Alder Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective March 2, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 509 Alder Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | DELAVAN WATERWORKS serves 9,028 people · EPA ID WI2650113 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2024 |
| Lead | 10 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 281 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: T-Mobile.
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