New Castle County property record for 1815 Williamson St, Wilmington, DE 19806 · Last verified May 2026
| Property Type | Commercial Office |
|---|---|
| Details | 2,900 sqft · built 1910 |
| Lot Size | 0.04 acres (1,742 sqft) |
| Owner | Individual Name on File |
| Last Sale | $80,000 (Feb 2001) |
| Tax Bill | $1,557 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 26-013.30-188 |
| Primary APN | 26-013.30-188 |
|---|
| Stories | 2 Stories |
|---|---|
| Building Area | 2,900 sqft Gross Area |
| 1st Floor Area | 1,600 sqft |
| Year Built | Built 1910 |
|---|---|
| Effective Year Built | Effective 2001 |
| Exterior Material | Brick |
| Construction Type | Concrete |
| Lot Area | 1,742 sqft (0.04 acres) |
| Lot Dimensions | 70 ft deep x 25 ft wide |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 1815 WILLIAMSON ST |
|---|---|
| City | WILMINGTON |
| State | DE |
| Zip | 19806-2327 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | BEG POINT NLY SIE OF 25 FT WIDE ST AT DIS OF 152 FT ELY OF LINCOLN ST |
| Legal Subdivision | WILMINGTON |
| Legal Block | 60 |
| Legal Lot Number | 18 |
| Jurisdiction | NEW CASTLE DE |
| Township / Civil Division | WILMINGTON |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 1200 |
Source: New Castle County records · APN 26-013.30-188
Assessment roll updated April 13, 2026 · Last verified May 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 1815 WILLIAMSON ST, WILMINGTON, DE 19806-2327 |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Feb 27, 2001 · Amount on Record |
| Deed Sale | Feb 27, 2001 · Amount on Record |
| Prior Sale | Dec 19, 2000 · Amount on Record |
| Deed Document Number | 200113104 |
| Record Updated | Jun 08, 2026 |
Source: New Castle County records · Assessment roll updated April 13, 2026 · Last verified May 2026
| Type | Name |
|---|---|
| State | Delaware |
| County | New Castle County |
| Municipality | Wilmington City |
| Unified School District | Red Clay Consolidated School District (PK - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $1,557.00 (-50.26%) | $460,700 (+300.96%) Land $219,300 Building $241,400 |
| 2023 | $3,130.00 | $114,900 (-) Land $8,700 Building $106,200 |
| 2022 | $114,900 Land $8,700 Building $106,200 |
Source: FEMA National Flood Hazard Layer, New Castle County (10003C), updated January 21, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 100030012001, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearby Flood Policies | 4 in force |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 1,035 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fiber | 980 / 880 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | Fixed Wireless | 100 / 20 |
May also be available at this address: Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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