# 1170 William Street, Hewlett

School in Hewlett, New York. It covers 9,399 square feet on the ground.

Rates calibrated October 2, 2026. Review by December 31, 2026. Updated October 27, 2026. Method propdata-estimator-v6.

## This building

1170 William Street, Hewlett. School in Hewlett, New York. Property ID spqmccj582neg3m.

## Facts

**Facts about 1170 William Street, Hewlett**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 1170 William Street, Hewlett, NY 11557 | [USA Structures](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Building type | School | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Footprint | 9,399 square feet | [USA Structures](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Perimeter | 431.86 feet | [USA Structures](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Height | 45.44 feet | [USA Structures](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Height survey year | 2014 | [USA Structures](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Stories | 3 stories | [USA Structures](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#how-we-know) |
| Exterior wall area | 19,624 square feet | [SkyPSI estimator](https://skypsi.com/property/ny/new-york/spqmccj582neg3m-1170-william-street-hewlett/#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) | $1,500 | $3,000 | $5,500 |
| Facade wash with mold or growth treatment | $2,500 | $4,500 | $8,000 |

**Exterior soft wash from a boom lift and by rope access, whole building**

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Facade wash, conventional access | $3,000 | $6,000 | $9,500 |

### Window cleaning

**Window cleaning by drone, whole building**

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Exterior windows only | $500 | $1,500 | $2,000 |
| Windows inside and out | $1,000 | $2,000 | $4,000 |

**Window cleaning by rope access, whole building**

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Exterior windows, rope access | $4,500 | $8,500 | $15,000 |
| Windows inside and out, rope access | $4,500 | $9,500 | $16,500 |

## Best method

- [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Drone has the lowest cost, most likely $3,000.
- [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Drone has the lowest cost, most likely $1,500.

## Similar buildings nearby

- [434 Haven Place, Hewlett](https://skypsi.com/property/ny/new-york/spenex2gtwae0ej-434-haven-place-hewlett/)
- [1170 William Street, Hewlett](https://skypsi.com/property/ny/new-york/spzrdaq7x0qjpra-1170-william-street-hewlett/)
- [1190 William Street, Hewlett](https://skypsi.com/property/ny/new-york/spzx5amva2a27mb-1190-william-street-hewlett/)
- [411 Serena Road, Hewlett](https://skypsi.com/property/ny/new-york/sp0afkn441bg2g9-411-serena-road-hewlett/)
- [1170 Peninsula Boulevard, Hewlett](https://skypsi.com/property/ny/new-york/sppca3zz0d9fbpx-1170-peninsula-boulevard-hewlett/)
- [1170 Peninsula Boulevard, Hewlett](https://skypsi.com/property/ny/new-york/spvnz17ekm232m5-1170-peninsula-boulevard-hewlett/)
- [367 Franklin Avenue, Hewlett](https://skypsi.com/property/ny/new-york/spk9bpqsm30bt26-367-franklin-avenue-hewlett/)
- [1180 Henrietta Place, Hewlett](https://skypsi.com/property/ny/new-york/spmkxvkkjk4k9f3-1180-henrietta-place-hewlett/)

## 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.
- [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, 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/

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