# 20 Demarest Avenue, West Nyack

Office in West Nyack, New York. It covers 527 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

20 Demarest Avenue, West Nyack. Office in West Nyack, New York. Property ID spkdvz3rwf023pp.

## Facts

**Facts about 20 Demarest Avenue, West Nyack**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 20 Demarest Avenue, West Nyack, NY 10994 | [USA Structures](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#how-we-know) |
| Building type | Office | [USA Structures and SkyPSI estimator](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#how-we-know) |
| Footprint | 527 square feet | [USA Structures](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#how-we-know) |
| Perimeter | 97.35 feet | [USA Structures](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#how-we-know) |
| Stories | 2 stories | [SkyPSI estimator](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#how-we-know) |
| Parcel number | 39208958.20-1-56 | [County and state public records](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#how-we-know) |
| Land use | 483 Converted residence | [County and state public records](https://skypsi.com/property/ny/new-york/spkdvz3rwf023pp-20-demarest-avenue-west-nyack/#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 | $1,000 |

## Best method

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

## Similar buildings nearby

- [2 Centerock Road, West Nyack](https://skypsi.com/property/ny/new-york/spypdw4va9x9emc-2-centerock-road-west-nyack/)
- [114 Main Street, Nyack](https://skypsi.com/property/ny/new-york/sp521kbndppjefs-114-main-street-nyack/)
- [2 Blue Hill Plaza, Pearl River](https://skypsi.com/property/ny/new-york/spk60a26sj6rkzq-2-blue-hill-plaza-pearl-river/)
- [1 Ramland Road, Orangeburg](https://skypsi.com/property/ny/new-york/spzzerk85fj8p26-1-ramland-road-orangeburg/)
- [700 Chestnut Ridge Road, Spring Valley](https://skypsi.com/property/ny/new-york/sp9jqdrgsmc9970-700-chestnut-ridge-road-spring-valley/)
- [17 Melnick Drive, Monsey](https://skypsi.com/property/ny/new-york/spamrd0nx6qwjmx-17-melnick-drive-monsey/)
- [1 Rockwood Road, Tarrytown](https://skypsi.com/property/ny/new-york/spvk4zzxmv8w97r-1-rockwood-road-tarrytown/)
- [303 South Broadway, Tarrytown](https://skypsi.com/property/ny/new-york/spqf2b674s4qg7w-303-south-broadway-tarrytown/)

## 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://skypsi.com/estimates/methodology/sources-and-licensing/): 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://skypsi.com/estimates/methodology/sources-and-licensing/

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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