# 4811 North Olcott Avenue, Harwood Heights

Apartments in Harwood Heights, Illinois. It covers 27,618 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

4811 North Olcott Avenue, Harwood Heights. Apartments in Harwood Heights, Illinois. Property ID spj316dvq8pts16.

## Facts

**Facts about 4811 North Olcott Avenue, Harwood Heights**

| Fact | Value | Source |
| --- | --- | --- |
| Address | 4811 North Olcott Avenue, Harwood Heights, IL 60706 | [USA Structures](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#how-we-know) |
| Building type | Apartments | [USA Structures and SkyPSI estimator](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#how-we-know) |
| Footprint | 27,618 square feet | [USA Structures](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#how-we-know) |
| Perimeter | 1,050.37 feet | [USA Structures](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#how-we-know) |
| Height | 61.98 feet | [USA Structures](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#how-we-know) |
| Stories | 6 stories | [USA Structures](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#how-we-know) |
| Exterior wall area | 65,097 square feet | [SkyPSI estimator](https://skypsi.com/property/il/chicago/spj316dvq8pts16-4811-north-olcott-avenue-harwood-heights/#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) | $5,500 | $10,000 | $16,500 |
| Facade wash with mold or growth treatment | $8,000 | $14,500 | $25,500 |

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

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Facade wash, conventional access | $10,000 | $18,000 | $30,000 |

### Window cleaning

**Window cleaning by drone, whole building**

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Exterior windows only | $2,000 | $4,000 | $6,500 |
| Windows inside and out | $3,500 | $6,500 | $12,000 |

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

| Service | Low | Most likely | High |
| --- | --- | --- | --- |
| Exterior windows, rope access | $13,500 | $27,000 | $47,000 |
| Windows inside and out, rope access | $14,500 | $29,500 | $52,000 |

## Best method

- [Exterior soft wash](https://skypsi.com/estimates/exterior-soft-wash/): Drone has the lowest cost, most likely $10,000.
- [Window cleaning](https://skypsi.com/estimates/window-cleaning/): Drone has the lowest cost, most likely $4,000.

## Similar buildings nearby

- [4833 North Olcott Avenue, Harwood Heights](https://skypsi.com/property/il/chicago/sp5k917tf2jb7d3-4833-north-olcott-avenue-harwood-heights/)
- [7504 West Lawrence Avenue, Harwood Heights](https://skypsi.com/property/il/chicago/sp1n85aqjwwgs4j-7504-west-lawrence-avenue-harwood-heights/)
- [7400 West Lawrence Avenue, Harwood Heights](https://skypsi.com/property/il/chicago/sphaf7ahs408q2p-7400-west-lawrence-avenue-harwood-heights/)

## 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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