Legal
Valuation Disclaimer
Effective April 1, 2026
Prysm provides automated property valuation estimates for informational purposes only. These estimates are not real estate appraisals and should not be treated as such.
The information produced by this tool does not constitute an appraisal as defined by the Uniform Standards of Professional Appraisal Practice (USPAP), federal regulation, or Arizona state law. No part of this Service should be interpreted as an appraisal, broker price opinion, or formal valuation performed by a licensed professional.
Estimates, Not Appraisals
A licensed real estate appraiser conducts a physical inspection of the property, evaluates its condition, considers improvements, analyzes the local market in detail, and applies professional judgment to arrive at an opinion of value. Prysm does none of these things.
Prysm generates an estimate by applying a statistical model to comparable sales data retrieved from third-party sources. The model cannot assess interior condition, renovations, landscaping, structural issues, neighborhood nuances, view premiums, lot characteristics, or any factor that requires physical inspection or local expertise.
As a result, the estimates produced may differ substantially from a property's actual market value or from the opinion of a licensed appraiser.
Third-Party Data Sources
Comparable sales data is sourced from the Rentcast API, a third-party data provider. We do not independently verify the accuracy, completeness, or currency of this data. Public property records may contain errors in sale prices, property attributes, square footage, lot sizes, or other recorded information.
Data availability and quality may vary by location, property type, and time period. In areas with fewer recent transactions, the model may have fewer comparable sales to work with, which can reduce the reliability of the estimate.
Statistical Model Limitations
The valuation model employs regression analysis, outlier detection, distance weighting, and composite scoring to produce estimates. Like all statistical models, it operates on assumptions and simplifications:
- The model assumes that comparable properties in the surrounding area are reasonable proxies for the subject property's value.
- Square footage adjustments are based on regression estimates, which may not capture nonlinear pricing relationships or property-specific premiums.
- Outlier removal is automated and may inadvertently exclude legitimate sales that appear anomalous statistically but reflect real market conditions.
- Distance weighting assumes that proximity correlates with price similarity, which may not hold in all neighborhoods or market conditions.
- The model does not account for property condition, age, construction quality, finishes, zoning, flood zones, school districts, HOA restrictions, or pending developments.
Rapidly Changing Market Conditions
Real estate markets can shift quickly due to changes in interest rates, economic conditions, seasonal patterns, inventory levels, local development, and other factors. The comparable sales used by the model reflect past transactions and may not accurately represent current or future market conditions.
An estimate produced today may become significantly less accurate as market conditions evolve. Valuations should be considered a snapshot in time, not a lasting assessment of value.
Not a Basis for Real Estate Decisions
Do not use Prysm estimates as the sole basis for any real estate purchase, sale, listing, financing, investment, or legal decision.
The estimates are intended as a starting point for research, not a definitive determination of value. Real estate transactions involve significant financial consequences, and decisions should be informed by multiple sources of information, including professional opinions.
Lenders, insurers, and government agencies will not accept Prysm estimates in place of a licensed appraisal. Tax assessments, loan underwriting, estate valuations, divorce proceedings, and other legal or financial processes require formal appraisals conducted by licensed professionals.
Consult Licensed Professionals
We strongly recommend engaging one or more of the following professionals before making real estate decisions:
Licensed Appraiser
For an independent, USPAP-compliant opinion of property value based on physical inspection and market analysis.
Real Estate Agent
For comparative market analysis informed by local market expertise and current listing activity.
Real Estate Attorney
For legal guidance on transactions, contracts, disputes, or any matter involving property rights.
Financial Advisor
For investment analysis and financial planning related to real estate holdings or purchases.
Arizona-Specific Notice
Prysm currently provides estimates for properties located in Arizona only. Arizona real estate is subject to unique market dynamics, water rights considerations, community property laws, HOA regulations, and other state-specific factors that the model may not fully capture. Users should be aware that Arizona property values can be significantly affected by local conditions that are not reflected in comparable sales data alone.
AI-Generated Content
The narrative analysis that accompanies each valuation is generated by an artificial intelligence model (Anthropic's Claude). While the AI narrative is based on the underlying data and model outputs, it is machine-generated text and may contain interpretive statements, generalizations, or characterizations that should be evaluated critically. The AI narrative does not constitute professional advice or opinion.