# SkyEstimate methodology

These pages explain how SkyPSI builds a SkyEstimate: the formula, the rates, the sources and the dates.

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

## Pages

- [How a SkyEstimate is built](https://skypsi.com/estimates/methodology/how-a-skyestimate-is-built/): The formula, from wall area and rate to the regional factor and the minimum job.
- [Rates per square foot by service](https://skypsi.com/estimates/methodology/per-square-foot-bands/): The low, most likely and high rate for each service.
- [How wall area is measured](https://skypsi.com/estimates/methodology/wall-area/): How a building's perimeter and height give its wall area.
- [Calibration dates and review](https://skypsi.com/estimates/methodology/calibration-and-review/): When the rates were calibrated and when they are reviewed next.
- [Access and permit costs](https://skypsi.com/estimates/methodology/add-ons/): The flat prices for access and permit costs.
- [Difficulty levels](https://skypsi.com/estimates/methodology/difficulty/): How hard access or soiling raises window and wash lines.
- [The minimum job value](https://skypsi.com/estimates/methodology/minimum-job-value/): The least a priced job comes to.
- [Water tower pricing](https://skypsi.com/estimates/methodology/water-towers/): Why a water tower prices as one job.
- [How tall a drone reaches](https://skypsi.com/estimates/methodology/drone-reach/): The building heights a drone cleans.
- [Regional price factors](https://skypsi.com/estimates/methodology/regional-price-factors/): How rates scale from state to state.
- [Confidence grades A to D](https://skypsi.com/estimates/methodology/confidence-grades/): What grades A to D say about a figure.
- [Sources and licensing](https://skypsi.com/estimates/methodology/sources-and-licensing/): Where the data comes from and how it is licensed.

## Estimates

- [All SkyEstimate pages](https://skypsi.com/estimates/)

[Request a Quote](https://skypsi.com/request-a-quote)

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Sources: SkyPSI estimator.

Page: https://skypsi.com/estimates/methodology/
JSON: https://skypsi.com/estimates/methodology.json
Content license: https://skypsi.com/content-license.txt