Property record
521 N 19th St, Philadelphia
School in Philadelphia, Pennsylvania. It covers 8,839 square feet on the ground.
This building
521 N 19th St, Philadelphia. School in Philadelphia, Pennsylvania. Property ID spn29m5ng9te7mb.
Facts
| Fact | Value | Source |
|---|---|---|
| Address | 521 N 19th St, Philadelphia, PA | County and state public records |
| Building type | School | USA Structures and SkyPSI estimator |
| Place name | Carpenter's Union Hall Local 8 | Overture Maps places |
| Place type | carpenter | Overture Maps places |
| Footprint | 8,839 square feet | USA Structures |
| Perimeter | 750.2 feet | USA Structures |
| Height | 50.98 feet | Overture Maps building footprints and Google Open Buildings |
| Stories | 4 stories | Overture Maps building footprints and Google Open Buildings |
| Exterior wall area | 38,248 square feet | SkyPSI estimator |
| Parcel number | 151042900 | County and state public records |
| Land use | SINGLE FAMILY - ROW 3 STY MASONRY | County and state public records |
Cost ranges
Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. What the grades mean.
Exterior soft wash
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash (drone) | $3,500 | $6,000 | $10,500 |
| Facade wash with mold or growth treatment | $5,000 | $9,000 | $15,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Facade wash, conventional access | $6,000 | $11,000 | $18,500 |
Window cleaning
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows only | $1,000 | $2,500 | $4,000 |
| Windows inside and out | $2,000 | $4,000 | $7,500 |
| Service | Low | Most likely | High |
|---|---|---|---|
| Exterior windows, rope access | $8,000 | $16,500 | $29,000 |
| Windows inside and out, rope access | $9,000 | $18,000 | $32,000 |
Best method
- Exterior soft wash: Drone has the lowest cost, most likely $6,000.
- Window cleaning: Drone has the lowest cost, most likely $2,500.
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How we know
Each fact names the source it comes from. A building file carries the source of each field, and SkyPSI shows that source beside the fact.
- County and state public records: Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data.
- USA Structures: Building footprints, heights and occupancy from FEMA's USA Structures.
- Google Open Buildings: Building outlines and heights from Google Open Buildings, reached through the Overture Maps buildings theme.
- Overture Maps building footprints: Building outlines, heights and floor counts from the Overture Maps buildings theme.
- Overture Maps places: Business and place names from the Overture Maps places theme.
- SkyPSI estimator: SkyPSI's own price model, calibrated rates and building-class rules.
Cost ranges come from the SkyPSI estimator, calibrated October 2, 2026. How a SkyEstimate is built.
Ask SkyPSI for a quote on your building.
Request a QuoteSources: County and state public records, USA Structures, Google Open Buildings, Overture Maps building footprints, Overture Maps places, SkyPSI estimator.
An estimate, not a quote. How a SkyEstimate is built.