Washtenaw County property record for 520 Onondaga St, Ann Arbor, MI 48104
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 3,128 sqft · built 1923 |
| Lot Size | 0.2 acres (8,712 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $450,000 (Jul 2003) |
| Tax Bill | $18,988 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 09-09-28-402-005 |
| Primary APN | 09-09-28-402-005 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 3,128 sqft Living Area |
| Basement Area | 828 sqft |
| Unfinished Basement | 828 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1923 |
|---|---|
| Effective Year Built | Effective 1923 |
| Lot Area | 8,712 sqft (0.2 acres) |
| Lot Dimensions | 132 ft deep x 66 ft wide |
| Garage Area | 610 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Street Address | 520 ONONDAGA ST |
|---|---|
| City | ANN ARBOR |
| State | MI |
| Zip | 48104-2607 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1C |
| Legal Description | LOT 12 BLK 2 MAP OF J D BALDWINS EASTERN ADDITION |
| Legal Range | 06E |
| Legal Township | 02S |
| Legal Section | 28 |
| Legal Subdivision | MAP OF J D BALDWINS EASTERN ADD |
| Legal Block | 2 |
| Legal Lot Number | 12 |
| Jurisdiction | WASHTENAW MI |
| Township / Civil Division | ANN ARBOR |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 405300 |
520 Onondaga St is owned and occupied by two individuals who bought it in July 2003.
Source: Washtenaw County records, as of August 17, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 520 ONONDAGA ST, ANN ARBOR, MI 48104-2607 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | Jul 8, 2003 · Amount on File |
| Deed Sale | Jul 8, 2003 · Amount on File |
| Prior Sale | Mar 29, 1996 · Amount on File |
| Deed Document Number | 20035447011 |
| Deed Book / Page | 4280 / 840 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 520 Onondaga St was $18,988 with a homeowner's exemption.
Source: Washtenaw County assessment roll, as of August 17, 2026
| Type | Name |
|---|---|
| State | Michigan |
| Municipality | Ann Arbor City |
| County | Washtenaw County |
| Unified School District | Ann Arbor Public Schools (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $537,800 | $1,075,600 | |
| 2025 | $18,988.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 520 Onondaga St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2015.
Source: FEMA National Flood Hazard Layer, effective May 21, 2026 · 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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (2015) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jun 2015 · other causes |
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 520 Onondaga St is low, with less than 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 99.1% of the US · lower than 98.4% of Michigan |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | ANN ARBOR serves 123,851 people · EPA ID MI0000220 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Oct 2025 |
| Lead | 2 ppb (2021–2023) 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.
Source: FCC Broadband Data Collection, based on 326 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Starlink Satellite | 280 / 30 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Mercury Fiber, T-Mobile, Verizon.
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