# 4449 Twain Ave, San Diego Retail in San Diego, California. It covers 1,494 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 4449 Twain Ave, San Diego. Retail in San Diego, California. Property ID spr5jy5g33dh5e1. ## Facts **Facts about 4449 Twain Ave, San Diego** | Fact | Value | Source | | --- | --- | --- | | Address | 4449 Twain Ave, San Diego, CA 92120 | [Overture Maps addresses](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Building type | Retail | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Place name | Always Clean for You | [Overture Maps places](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Place type | home cleaning | [Overture Maps places](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Footprint | 1,494 square feet | [USA Structures](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Perimeter | 161.25 feet | [USA Structures](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Height | 17.98 feet | [USA Structures](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Stories | 1 story | [USA Structures](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#how-we-know) | | Exterior wall area | 2,899 square feet | [SkyPSI estimator](https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/#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 from a boom lift, whole building** | Service | Low | Most likely | High | | --- | --- | --- | --- | | Facade wash, conventional access | $500 | $1,000 | $1,500 | ## Best method - [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift fits this building, most likely $1,000. ## Similar buildings nearby - [4455 Twain Ave, San Diego](https://skypsi.com/property/ca/san-diego/sp7q1fj5b5sm577-4455-twain-ave-san-diego/) - [4451 Twain Ave, San Diego](https://skypsi.com/property/ca/san-diego/sp3tfdf4h19gj3s-4451-twain-ave-san-diego/) - [6070 Mission Gorge Rd, San Diego](https://skypsi.com/property/ca/san-diego/spaaf461c94gnns-6070-mission-gorge-rd-san-diego/) ## 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. - [Overture Maps places](https://docs.overturemaps.org/attribution/): Business and place names from the Overture Maps places 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, Overture Maps places, 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/ Business names: Overture Maps Foundation, overturemaps.org (places theme, CDLA Permissive 2.0). https://docs.overturemaps.org/attribution/ Page: https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego/ JSON: https://skypsi.com/property/ca/san-diego/spr5jy5g33dh5e1-4449-twain-ave-san-diego.json Content license: https://skypsi.com/content-license.txt