# 3450 J St, Philadelphia Apartments in Philadelphia, Pennsylvania. It covers 24,545 square feet on the ground. Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 30, 2026. Method propdata-estimator-v6. ## This building 3450 J St, Philadelphia. Apartments in Philadelphia, Pennsylvania. Property ID sp9f8dc3a1bcb3k. ## Facts **Facts about 3450 J St, Philadelphia** | Fact | Value | Source | | --- | --- | --- | | Address | 3450 J St, Philadelphia, PA | [County and state public records](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Building type | Apartments | [USA Structures and SkyPSI estimator](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Footprint | 24,545 square feet | [USA Structures](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Perimeter | 765.55 feet | [USA Structures](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Height | 123.98 feet | [Overture Maps building footprints and Google Open Buildings](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Stories | 12 stories | [Overture Maps building footprints and Google Open Buildings](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Exterior wall area | 94,916 square feet | [SkyPSI estimator](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Parcel number | 881142952 | [County and state public records](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | | Land use | APARTMENTS > 4 UNITS - APTS 5-50 UNITS MASONRY | [County and state public records](https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/#how-we-know) | ## Cost ranges Whole-building ranges from the SkyPSI estimator, calibrated October 2, 2026. Grade C: modelled from the Texas calibration. [What the grades mean](https://skypsi.com/estimates/methodology/confidence-grades/). ### Exterior soft wash **Exterior soft wash by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash (drone) | $8,000 | $14,500 | $24,500 | | Facade wash with mold or growth treatment | $11,500 | $21,500 | $37,000 | **Exterior soft wash from a boom lift and by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $14,500 | $26,500 | $44,000 | ### Window cleaning **Window cleaning by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows only | $3,000 | $6,000 | $10,000 | | Windows inside and out | $5,000 | $10,000 | $17,500 | **Window cleaning by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows, rope access | $19,500 | $39,000 | $68,500 | | Windows inside and out, rope access | $21,500 | $43,000 | $76,500 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Drone has the lowest cost, most likely $14,500. - [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Drone has the lowest cost, most likely $6,000. ## Similar buildings nearby - [3950 D St, Philadelphia](https://skypsi.com/property/pa/philadelphia/spt5m2xrmz1sf7v-3950-d-st-philadelphia/) - [3921 N 5th St, Philadelphia](https://skypsi.com/property/pa/philadelphia/spghd59e352k8w3-3921-n-5th-st-philadelphia/) - [4676 Darrah St, Philadelphia](https://skypsi.com/property/pa/philadelphia/spxnbz3ksmabnpe-4676-darrah-st-philadelphia/) - [1900 N 9th St, Philadelphia](https://skypsi.com/property/pa/philadelphia/sp582b11beysmc4-1900-n-9th-st-philadelphia/) - [810 N Hancock St, Philadelphia](https://skypsi.com/property/pa/philadelphia/spf8q46dqng1k68-810-n-hancock-st-philadelphia/) - [900 N 9th St, Philadelphia](https://skypsi.com/property/pa/philadelphia/sptcsj3syt8yzyy-900-n-9th-st-philadelphia/) - [213 Arch St, Philadelphia](https://skypsi.com/property/pa/philadelphia/spez6n7r8zss7a4-213-arch-st-philadelphia/) - [1300 Fairmount Ave, Philadelphia](https://skypsi.com/property/pa/philadelphia/sp11r4e4jxvg78y-1300-fairmount-ave-philadelphia/) ## 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](https://skypsi.com/estimates/methodology/sources-and-licensing/): Situs addresses, parcel numbers, land use, year built and floor counts from county appraisal districts and state open data. - [USA Structures](https://disasters.geoplatform.gov/USA_Structures/): Building footprints, heights and occupancy from FEMA's USA Structures. - [Google Open Buildings](https://sites.research.google/open-buildings/): Building outlines and heights from Google Open Buildings, reached through the Overture Maps buildings theme. - [Overture Maps building footprints](https://opendatacommons.org/licenses/odbl/1-0/): Building outlines, heights and floor counts from the Overture Maps buildings theme. - [SkyPSI estimator](https://skypsi.com/estimates/methodology/sources-and-licensing/): 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](https://skypsi.com/estimates/methodology/how-a-skyestimate-is-built/). [Request a Quote](https://skypsi.com/request-a-quote) --- Sources: County and state public records, USA Structures, Google Open Buildings, Overture Maps building footprints, SkyPSI estimator. Parcel and address facts from county appraisal districts and state open-data programs (public records). https://skypsi.com/estimates/methodology/sources-and-licensing/ Building footprints: USA Structures, FEMA Response Geospatial Office, Oak Ridge National Laboratory and U.S. Geological Survey (CC BY 4.0). https://disasters.geoplatform.gov/USA_Structures/ Building data from Google Open Buildings, reached through Overture Maps Foundation, overturemaps.org. https://sites.research.google/open-buildings/ Building footprints from Overture Maps Foundation, including OpenStreetMap contributors, Microsoft, Esri Community Maps contributors and USGS, under the Open Database License (ODbL). https://opendatacommons.org/licenses/odbl/1-0/ Page: https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia/ JSON: https://skypsi.com/property/pa/philadelphia/sp9f8dc3a1bcb3k-3450-j-st-philadelphia.json Content license: https://skypsi.com/content-license.txt