# 16427 West 135th Street, Lemont

School in Lemont, Illinois. It covers 4,755 square feet on the ground.

Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 9, 2026. Method propdata-estimator-v6.

## This building

16427 West 135th Street, Lemont. School in Lemont, Illinois. Property ID sppaw6dkfdpsfnd.

## Facts

**Facts about 16427 West 135th Street, Lemont**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 16427 West 135th Street, Lemont, IL 60439 | [USA Structures](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Building type | School | [USA Structures and SkyPSI estimator](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Place name | Montessori School of Lemont | [Overture Maps places](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Place type | private school | [Overture Maps places](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Footprint | 4,755 square feet | [USA Structures](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Perimeter | 305.42 feet | [USA Structures](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Height | 14.63 feet | [USA Structures](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Stories | 1 story | [USA Structures](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#how-we-know) |
| Exterior wall area | 4,469 square feet | [SkyPSI estimator](https://skypsi.com/property/il/chicago/sppaw6dkfdpsfnd-16427-west-135th-street-lemont/#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 | $1,500 | $2,000 |

## Best method

- [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift fits this building, most likely $1,500.

## Similar buildings nearby

- [16429 West 135th Street, Lemont](https://skypsi.com/property/il/chicago/spm0673krw2sbp6-16429-west-135th-street-lemont/)
- [16431 West 135th Street, Lemont](https://skypsi.com/property/il/chicago/sp9bcn66zgd8bhf-16431-west-135th-street-lemont/)
- [16431 West 135th Street, Lemont](https://skypsi.com/property/il/chicago/spfw0n028b3vmev-16431-west-135th-street-lemont/)

## 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 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 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/

Business names: Overture Maps Foundation, overturemaps.org (places theme, CDLA Permissive 2.0). https://docs.overturemaps.org/attribution/

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