# 401 Main Street, Islip

Office in Islip, New York. It covers 791 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

401 Main Street, Islip. Office in Islip, New York. Property ID sps1jgkjy765qmx.

## Facts

**Facts about 401 Main Street, Islip**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 401 Main Street, Islip, NY 11751 | [USA Structures](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#how-we-know) |
| Building type | Office | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#how-we-know) |
| Footprint | 791 square feet | [USA Structures](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#how-we-know) |
| Perimeter | 129.95 feet | [USA Structures](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#how-we-know) |
| Stories | 2 stories | [SkyPSI estimator](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#how-we-know) |
| Parcel number | 472889370.-1-66 | [County and state public records](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#how-we-know) |
| Land use | 652 Office building | [County and state public records](https://skypsi.com/property/ny/new-york/sps1jgkjy765qmx-401-main-street-islip/#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

- [401 Main Street, Islip](https://skypsi.com/property/ny/new-york/sp9pvx02pvyxadd-401-main-street-islip/)
- [341 Main Street, Islip](https://skypsi.com/property/ny/new-york/sptt0k8sssw98yy-341-main-street-islip/)
- [375 Main Street, Islip](https://skypsi.com/property/ny/new-york/sppsn6afcbzz3g3-375-main-street-islip/)
- [341 Main Street, Islip](https://skypsi.com/property/ny/new-york/sprctr2nmmjb27h-341-main-street-islip/)
- [401 Main Street, Islip](https://skypsi.com/property/ny/new-york/spmhjkpbs654snb-401-main-street-islip/)
- [309 Main Street, Islip](https://skypsi.com/property/ny/new-york/sp1bh6vwxnsr2st-309-main-street-islip/)
- [417 Main Street, Islip](https://skypsi.com/property/ny/new-york/spp4wv8s4b1cr6d-417-main-street-islip/)
- [417 Main Street, Islip](https://skypsi.com/property/ny/new-york/spsmz6sw87c4wk3-417-main-street-islip/)

## 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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