# 121 North 21st Street, Montebello

Apartments in Montebello, California. It covers 1,807 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

121 North 21st Street, Montebello. Apartments in Montebello, California. Property ID sps4ez9kgm8447x.

## Facts

**Facts about 121 North 21st Street, Montebello**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 121 North 21st Street, Montebello, CA 90640 | [Overture Maps addresses](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#how-we-know) |
| Building type | Apartments | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#how-we-know) |
| Footprint | 1,807 square feet | [USA Structures](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#how-we-know) |
| Perimeter | 187.54 feet | [USA Structures](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#how-we-know) |
| Height | 22.08 feet | [USA Structures](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#how-we-know) |
| Stories | 2 stories | [USA Structures](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#how-we-know) |
| Exterior wall area | 4,141 square feet | [SkyPSI estimator](https://skypsi.com/property/ca/los-angeles/sps4ez9kgm8447x-121-north-21st-street-montebello/#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 | $2,000 |

## Best method

- [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift fits this building, most likely $1,000.

## Similar buildings nearby

- [112 North 21st Street, Montebello](https://skypsi.com/property/ca/los-angeles/spq2mmjh1bmpvzp-112-north-21st-street-montebello/)
- [137 North 21st Street, Montebello](https://skypsi.com/property/ca/los-angeles/sp60825jzyxjxdb-137-north-21st-street-montebello/)
- [135 North 21st Street, Montebello](https://skypsi.com/property/ca/los-angeles/sprtnfa20w3kvf1-135-north-21st-street-montebello/)

## 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/

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