# 841 Apollo Street, El Segundo Office in El Segundo, California. It covers 28,393 square feet on the ground. Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 7, 2026. Method propdata-estimator-v6. ## This building 841 Apollo Street, El Segundo. Office in El Segundo, California. Property ID spppcn3jx97eb16. ## Facts **Facts about 841 Apollo Street, El Segundo** | Fact | Value | Source | | --- | --- | --- | | Address | 841 Apollo Street, El Segundo, CA 90245 | [Overture Maps addresses](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#how-we-know) | | Building type | Office | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#how-we-know) | | Footprint | 28,393 square feet | [USA Structures](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#how-we-know) | | Perimeter | 705.79 feet | [USA Structures](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#how-we-know) | | Height | 49.25 feet | [USA Structures](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#how-we-know) | | Stories | 4 stories | [USA Structures](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#how-we-know) | | Exterior wall area | 34,757 square feet | [SkyPSI estimator](https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/#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) | $3,000 | $5,500 | $9,500 | | Facade wash with mold or growth treatment | $4,500 | $8,000 | $14,000 | **Exterior soft wash from a boom lift and by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $5,500 | $10,000 | $16,500 | ### Window cleaning **Window cleaning by drone, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows only | $1,000 | $2,000 | $3,500 | | Windows inside and out | $2,000 | $3,500 | $6,500 | **Window cleaning by rope access, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Exterior windows, rope access | $7,500 | $15,000 | $26,000 | | Windows inside and out, rope access | $8,000 | $16,500 | $29,000 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Drone has the lowest cost, most likely $5,500. - [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Drone has the lowest cost, most likely $2,000. ## Similar buildings nearby - [2120 Park Place, El Segundo](https://skypsi.com/property/ca/los-angeles/spqedzh61y7vhrc-2120-park-place-el-segundo/) - [830 South Nash Street, El Segundo](https://skypsi.com/property/ca/los-angeles/spk5sq8qkncfdyj-830-south-nash-street-el-segundo/) - [2101 Rosecrans Avenue, El Segundo](https://skypsi.com/property/ca/los-angeles/sp6w9aqjkhvdrwn-2101-rosecrans-avenue-el-segundo/) ## 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. - [USA Structures](https://disasters.geoplatform.gov/USA_Structures/): Building footprints, heights and occupancy from FEMA's USA Structures. - [Overture Maps addresses](https://docs.overturemaps.org/attribution/): Street addresses from the Overture Maps addresses 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: USA Structures, Overture Maps addresses, SkyPSI estimator. 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/ Addresses: Overture Maps Foundation, overturemaps.org (addresses theme), including the U.S. Department of Transportation National Address Database (NAD). https://docs.overturemaps.org/attribution/ Page: https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo/ JSON: https://skypsi.com/property/ca/los-angeles/spppcn3jx97eb16-841-apollo-street-el-segundo.json Content license: https://skypsi.com/content-license.txt