# 3500 Darrell Road, McHenry

School in McHenry, Illinois. It covers 16,212 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

3500 Darrell Road, McHenry. School in McHenry, Illinois. Property ID spk9dyhmj1y6g16.

## Facts

**Facts about 3500 Darrell Road, McHenry**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 3500 Darrell Road, McHenry, IL 60051 | [USA Structures](https://skypsi.com/property/il/chicago/spk9dyhmj1y6g16-3500-darrell-road-mchenry/#how-we-know) |
| Building type | School | [USA Structures and SkyPSI estimator](https://skypsi.com/property/il/chicago/spk9dyhmj1y6g16-3500-darrell-road-mchenry/#how-we-know) |
| Footprint | 16,212 square feet | [USA Structures](https://skypsi.com/property/il/chicago/spk9dyhmj1y6g16-3500-darrell-road-mchenry/#how-we-know) |
| Perimeter | 608.68 feet | [USA Structures](https://skypsi.com/property/il/chicago/spk9dyhmj1y6g16-3500-darrell-road-mchenry/#how-we-know) |
| Stories | 2 stories | [SkyPSI estimator](https://skypsi.com/property/il/chicago/spk9dyhmj1y6g16-3500-darrell-road-mchenry/#how-we-know) |
| Parcel number | 0921200077 | [County and state public records](https://skypsi.com/property/il/chicago/spk9dyhmj1y6g16-3500-darrell-road-mchenry/#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 | $2,500 | $4,500 | $7,500 |

## Best method

- [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Boom lift fits this building, most likely $4,500.

## Similar buildings nearby

- [3500 Darrell Road, McHenry](https://skypsi.com/property/il/chicago/spkvxmdb2qx8qyw-3500-darrell-road-mchenry/)
- [620 West Bonner Road, Wauconda](https://skypsi.com/property/il/chicago/spgpzxbtr4pfkx8-620-west-bonner-road-wauconda/)
- [501 Kora Lane, Island Lake](https://skypsi.com/property/il/chicago/spdb2715se3vhvk-501-kora-lane-island-lake/)

## 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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