Delaware County property record for 21 E Knowles Ave, Glenolden, PA 19036
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 1,700 sqft · built 1985 |
| Lot Size | 0.211 acres (9,191 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $141,200 (Apr 1988) |
| Tax Bill | $6,313 (2026) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21-00-01146-01 |
| Primary APN | 21-00-01146-01 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,700 sqft Living Area |
| 1st Floor Area | 1,700 sqft |
| Family Room | Family Room |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | Conventional |
| Exterior Material | Aluminum/Vinyl |
| Construction Type | Stone |
| Lot Area | 9,191 sqft (0.211 acres) |
| Lot Dimensions | 181 ft deep x 52 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Account Number | 2105710001 |
|---|---|
| Street Address | 21 E KNOWLES AVE |
| City | GLENOLDEN |
| State | PA |
| Zip | 19036-1808 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 2 STY HSE 52X181X53X176 |
| Legal Block | 10 |
| Jurisdiction | DELAWARE PA |
| Township / Civil Division | GLENOLDEN |
| Census Block Group | 3 |
| Census Block | 3014 |
| Census Tract | 403501 |
21 E Knowles Ave is owned and occupied by two individuals who bought it in April 1988.
Source: Delaware County records, as of May 28, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 21 E KNOWLES AVE, GLENOLDEN, PA 19036-1808 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 21, 1988 · Amount on File |
| Deed Sale | Apr 21, 1988 · Amount on File |
| Deed Book / Page | 566 / 1082 |
| Record Updated | Sep 20, 2026 |
The 2026 property tax bill for 21 E Knowles Ave was $6,313.
Source: Delaware County assessment roll, as of May 28, 2026
| Type | Name |
|---|---|
| State | Pennsylvania |
| County | Delaware County |
| Municipality | Glenolden Borough |
| Unified School District | Interboro School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $6,313.00 | $167,900 Land $51,470 Building $116,430 | $167,900 Land $51,470 Building $116,430 |
| 2024 | $167,900 Land $51,470 Building $116,430 | ||
| 2023 | $5,890.00 | ||
| 2021 | $167,900 (-) | ||
| 2020 | $167,900 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21 E Knowles Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1999.
Source: FEMA National Flood Hazard Layer, effective September 30, 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 | 5 in force |
| Nearby Flood Claims | 1 (1999) |
| Most Recent Claim | Sep 1999 · Hurricane Floyd Major Disaster Declarations |
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 21 E Knowles 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 | AQUA PA MAIN SYSTEM private · serves 822,600 people · EPA ID PA1460073 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Mar 2025 |
| Lead | Under 1 ppb (2025) action level 15 ppb |
| Water Quality | Treatment failure resolved · Nov 2024 E. coli resolved · Jul 2017 |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 27 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 420 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
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