Waukesha County property record for 139 Lake St, Mukwonago, WI 53149
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · built 1950 |
| Lot Size | 0.16 acres (6,970 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $2,697 (2025) |
| Deeds & Mortgages | Jun 2019 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | MUKV-1974-025 |
| Primary APN | MUKV-1974-025 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| 1st Floor Area | 432 sqft |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Ranch |
| Exterior Material | Aluminum/Vinyl |
| Lot Area | 6,970 sqft (0.16 acres) |
| Garage Type | Attached |
| Parking Spaces | 1 Parking Space |
| Cooling System | None |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 139 LAKE ST |
|---|---|
| City | MUKWONAGO |
| State | WI |
| Zip | 53149-1322 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | E 88 FT LOT 1 BLK 3 THE A H GIBSON PLAT OF MUKWONAGO PT NW1/4 SEC 26 T5N R18E :: ALSO COM CTR SEC N 82 FT 6 IN N86 1/2E 1 FT S 82 FT 6 IN W 1 FT TO BGN DOC# 3203828 |
| Legal Range | 18E |
| Legal Township | 5N |
| Legal Section | 26 |
| Legal Subdivision | THE A H GIBSON PLAT OF MUKWONAGO |
| Legal Block | 3 |
| Legal Lot Number | 1 |
| Jurisdiction | WAUKESHA WI |
| Township / Civil Division | MUKWONAGO |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 203901 |
139 Lake St is owned and occupied by an individual who acquired it in September 2004.
Source: Waukesha County records, as of June 23, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 139 LAKE ST, MUKWONAGO, WI 53149-1322 |
| 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 Transfer Date | Sep 9, 2004 |
| Transfer Doc | 0003203828 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | WAUKESHA WI |
| Property Address | 139 LAKE ST, MUKWONAGO, WI 53149-1322 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0004401722 |
|---|---|
| Date | Jun 12, 2019 |
| Instrument | 4401722 |
| Name | CITIZENS BANK |
|---|---|
| Type | Bank |
| Address | MUKWONAGO, WI 53149 |
| Amount | Amount on Record |
|---|
The 2025 property tax bill for 139 Lake St was $2,697.
Source: Waukesha County assessment roll, as of June 23, 2026
| Type | Name |
|---|---|
| State | Wisconsin |
| County | Waukesha County |
| Municipality | Mukwonago Village |
| Unified School District | Mukwonago School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,697.00 | $236,400 Land $72,500 Building $163,900 | $250,300 |
| 2023 | $2,347.00 Homeowner's exemption | $146,000 Land $32,000 Building $114,000 | $206,700 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 139 Lake St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 19, 2025 · 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 | 6 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.
Wildfire risk around 139 Lake St is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · above 57% of Wisconsin |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | MUKWONAGO WATERWORKS serves 8,190 people · EPA ID WI2680209 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2024 |
| Lead | 3 ppb (2023) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 2 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 218 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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