# 421 SW 4 St, Miami

School in Miami, Florida. It covers 628 square feet on the ground.

Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 14, 2026. Method propdata-estimator-v6.

## This building

421 SW 4 St, Miami. School in Miami, Florida. Property ID spfrj4sdw7z0t53.

## Facts

**Facts about 421 SW 4 St, Miami**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 421 SW 4 St, Miami, FL 33130 | [USA Structures](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Building type | School | [USA Structures and SkyPSI estimator](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Footprint | 628 square feet | [USA Structures](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Perimeter | 109.29 feet | [USA Structures](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Height | 11.15 feet | [USA Structures](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Stories | 1 story | [USA Structures](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Exterior wall area | 1,219 square feet | [SkyPSI estimator](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Parcel number | 0102020601170 | [County and state public records](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Land use | 008 Multi-family - fewer than 10 units | [County and state public records](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Year built | 1956 | [County and state public records](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#how-we-know) |
| Building area on the parcel record | 2,838 square feet | [County and state public records](https://skypsi.com/property/fl/miami/spfrj4sdw7z0t53-421-sw-4-st-miami/#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 | $500 | $500 |

## Best method

- [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift fits this building, most likely $500.

## Similar buildings nearby

- [431 SW 4 St, Miami](https://skypsi.com/property/fl/miami/speqmwc0mzxx4gg-431-sw-4-st-miami/)
- [431 SW 4 St, Miami](https://skypsi.com/property/fl/miami/sp3pkzj2v356bt5-431-sw-4-st-miami/)
- [408 SW 4 Ave, Miami](https://skypsi.com/property/fl/miami/sp7x76gha555t2k-408-sw-4-ave-miami/)

## 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://comptroller.texas.gov/taxes/property-tax/): 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.
- [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, SkyPSI estimator.

Parcel and address facts from county appraisal districts and state open-data programs (public records). https://comptroller.texas.gov/taxes/property-tax/

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/

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