Non Disclosure States Explained How to Comp Properties Without Sale Data

Non-disclosure states are jurisdictions where property sale prices are not publicly recorded or are kept confidential, making comparable property analysis more challenging for real estate professionals and buyers. In these states, appraisers and agents must use alternative data sources and methods to determine fair market value when direct sales comparables are unavailable or incomplete. Understanding how to navigate non-disclosure states is essential for anyone involved in real estate transactions, refinancing, or property valuation.

TL;DR

• Non-disclosure states do not require public recording of sale prices; common examples include Alaska, Hawaii, Idaho, Kansas, Mississippi, Missouri, Montana, New Mexico, North Dakota, South Dakota, Texas, Utah, and Wyoming (verify your state's current rules with your local county assessor).

• Appraisers and agents can still comp properties using tax assessment records, MLS data, mortgage records, property tax transfers, assessor estimates, and professional appraisal databases that aggregate sales even when prices are withheld from public records.

• Non-disclosure states often have slower valuation turnarounds, higher appraisal costs, and may require licensed appraisers more frequently because alternative comparables are harder to establish and verify.

What Are Non-Disclosure States?

Non-disclosure states are jurisdictions where the sale price of a property is either not recorded in public property records, is recorded but kept confidential, or is recorded in a format that is difficult for the public to access systematically. This differs from full-disclosure states, where all residential and commercial property sale prices are public record and freely searchable by anyone.

The primary non-disclosure states include Alaska, Hawaii, Idaho, Kansas, Mississippi, Missouri, Montana, New Mexico, North Dakota, South Dakota, Texas, Utah, and Wyoming. However, non-disclosure rules can vary significantly within a state. Some counties may require disclosure while others do not, or disclosure rules may differ by property type or transaction type. Always verify the specific rules with your local county assessor's office or deed recording authority, as laws change and exceptions exist.

Non-disclosure policies stem from various motivations: privacy protection, historical tax avoidance concerns, federal land ownership patterns (especially in western states), or legislative priorities favoring confidentiality over transparency. The practical effect is that real estate professionals and property owners face genuine barriers when trying to establish what comparable properties sold for recently.

Why Non-Disclosure Creates Valuation Challenges

In full-disclosure states, determining a property's fair market value is relatively straightforward. An appraiser or agent searches public MLS data, county records, and online databases for recent sales of similar properties in the same neighborhood. The sale prices are transparent and verified by official recording. In non-disclosure states, that foundational dataset is partially or completely hidden.

This opacity causes several practical problems. First, appraisers cannot rely on official recorded sale prices to establish recent comparable sales, which is the gold standard in the Uniform Standards of Professional Appraisal Practice (USPAP). Second, deals that closed without entering the MLS system leave no trace in public records. Third, investors and house-flippers may deliberately avoid disclosure to keep their business strategies confidential. Fourth, the process of finding and verifying true comparables becomes time-intensive, labor-heavy, and often requires live research, phone calls, and interviews with agents or property owners.

Data Sources and Methods for Non-Disclosure States

Tax Assessment Records

County assessors maintain property valuations for tax purposes. While these assessed values are not the same as sale prices, they are updated periodically and often correlate with market value, especially when properties change hands. Some assessor offices will publish the price paid in transfer documents or deed records, even if the MLS does not. Check your county assessor's website directly; many now offer online property records, transfer history, and even estimated values based on recent sales data they have compiled. This is often the most accessible alternative to MLS data in non-disclosure states.

MLS Data (Partial)

Even in non-disclosure states, the Multiple Listing Service may contain closed sale prices if agents voluntarily enter them or if local MLS rules require disclosure to member agents. The price may not appear in public-facing searches, but it may be visible to licensed real estate professionals with MLS access. If you are working with a licensed agent or appraiser, ask them to pull MLS closed sales in the subject property's area. This is often the fastest and most reliable comparable data available, even in states with legal non-disclosure.

Appraisal Databases

Professional appraisal platforms such as CoStar, CoreLogic, FHFA (Federal Housing Finance Agency) data, and other aggregated databases collect sales information from multiple sources, including mortgage recordings, tax records, and voluntary reporting. These services compile data that individual counties do not make easily public. If you are ordering a formal appraisal, the appraiser will have access to these platforms and can pull comparables that you, as an individual buyer or seller, cannot easily access yourself. This is a significant reason why formal appraisals are more common and more heavily relied upon in non-disclosure states.

Mortgage and Deed Records

Even when sale prices are withheld, the deed or mortgage document filed with the county often contains clues. Mortgage amounts, loan-to-value ratios, or information from the recorded instrument itself can be used to back-calculate or estimate sale price. Additionally, in some non-disclosure states, the mortgage amount is recorded and can be cross-referenced with public lending data. This method is less precise than a stated sale price but is better than nothing.

Property Tax Transfer Declarations

Many non-disclosure states require a transfer tax declaration or similar document to be filed when a property changes hands. These forms often capture the actual sale price for tax purposes, and the information may be available through the county auditor, treasurer, or assessor. In Texas, for example, property transfer declarations are filed and contain sale price information that appraisers and agents regularly access. Verify whether your county maintains such records and whether they are public or restricted to licensed professionals.

Broker Price Opinions and Market Analysis

A licensed real estate agent can prepare a broker price opinion (BPO) or comparative market analysis (CMA) based on their direct knowledge of the market, recent listings, closed deals they know about, and conversations with other agents. In non-disclosure states, this professional judgment and local knowledge become more valuable. A good agent with deep roots in a community often knows prices that are not yet in any database. However, a BPO is less rigorous than an appraisal and may not be accepted by lenders or for formal valuation purposes.

Public Sales Records from Lenders and Foreclosures

Foreclosure sales, auctions, and publicly listed bank-owned (REO) properties typically have disclosed sale prices or opening bids, even in non-disclosure states. While these may not represent typical market sales, they provide data points. Government-backed mortgage programs (FHA, VA, USDA) also tend to generate more recorded transaction data because federal standards require greater transparency.

Best Practices for Comping in Non-Disclosure States

Use Multiple Data Sources

Do not rely on a single source. Layer tax assessor data, MLS records, appraisal databases, and broker research to triangulate a fair value estimate. If five different sources all indicate a value range of $450,000 to $500,000, you can be more confident than if only one source gave that figure.

Work with a Local Licensed Professional

A licensed appraiser or real estate agent in a non-disclosure state has access to tools, databases, and professional networks that the general public does not. They are also accountable to their licensing board if they provide negligent valuations. For any significant property transaction, especially refinancing or appraisal-dependent purchases, hiring a professional is not optional in non-disclosure states; it is the standard practice.

Request a Full Appraisal Early

In non-disclosure states, appraisers are more heavily relied upon. If you are buying with a mortgage, order the appraisal as early as possible in the transaction. Do not wait until the last week. The appraiser will need time to locate and verify comparables, possibly contact agents or owners, and compile a defensible report. Budget extra time and cost.

Document Your Research

If you are making a valuation argument based on comps in a non-disclosure state, document every source. Record which comparables you used, where you found them, when they sold, and how you verified the price. Write down the source URL, record number, or contact information. This creates a paper trail that demonstrates due diligence and makes your analysis defensible if questioned later.

Adjust Comparables Carefully

With fewer direct comparables available, you may need to adjust comparables more heavily for differences in condition, location, size, or time on market. Ensure your adjustments are defensible and document your reasoning. If you are adjusting a comparable up or down by more than 10-15%, be prepared to justify it with market evidence.

Common Misconceptions

Non-disclosure does not mean comping is impossible; it means it is harder and requires more effort. Real estate transactions happen every day in non-disclosure states, and properties are successfully appraised, bought, and sold. The process is slower and more expensive, but not impossible.

It is also incorrect to assume that all non-disclosure states are equally restrictive. Some states allow appraisers and licensed professionals full access to sale data even if the public does not. Others have pockets of disclosure or vary by county. Always research your specific jurisdiction.

Finally, do not assume that an MLS price in a non-disclosure state is untrustworthy. If an agent entered a sale price into the MLS, it is generally accurate, even if it is not publicly searchable. MLS data is used by other agents, banks, and appraisers; misrepresenting prices would damage professional reputation and create legal liability.

Impact on Real Estate Transactions

Non-disclosure states typically have longer appraisal timelines, sometimes 2 to 4 weeks instead of 1 to 2 weeks in disclosure states. Appraisal fees are often higher because the work is more labor-intensive. Lenders may require more conservative loan-to-value ratios or additional verification steps because the comparable data is harder to validate. Cash buyers have an advantage because they do not depend on a lender's appraisal and can negotiate value more freely based on personal research and inspection.

Sellers in non-disclosure states may list properties higher, knowing that buyers cannot easily verify comparable prices. Conversely, buyers may make lower offers for the same reason. The information asymmetry can be exploited by either party if the other is not diligent.

Frequently Asked Questions

Is my state a non-disclosure state?

Check your county assessor's website or call your local deed recording office. Ask them explicitly whether residential property sale prices are public record. Some states are non-disclosure but have exceptions; others have varying rules by county. Do not assume based on your state name alone. Many states that were historically non-disclosure have changed their laws, and the situation may differ for commercial versus residential properties. Verify with your official local source.

Can I get comparable sales information for a mortgage refinance in a non-disclosure state?

Yes, but you will need to work with your lender and appraiser. The appraiser will have professional database access and can locate comparables that public records do not easily reveal. Your lender may also require a full appraisal instead of a desktop or broker price opinion. Allow extra time and budget $400 to $800 or more for the appraisal, depending on property type and location. Request the appraisal early so delays do not hold up your closing.

What is the difference between a non-disclosure state and a state where sale prices are public but hard to find?

Non-disclosure states have a legal or structural reason why prices are not recorded or are not systematized for public access. A state where prices are technically public but scattered across hundreds of county websites is functionally similar to a non-disclosure state for practical purposes, but the legal basis is different. For your purposes as a buyer or appraiser, the practical effect is the same: you cannot easily pull recent comparable sales from one searchable database.

Does a non-disclosure state protect my privacy when I buy or sell a property?

Partially. Your sale price will not appear in a public MLS or county database searchable by the general public. However, the deed will be recorded, transfer tax information may be public, and real estate professionals with MLS or database access will know your price. Non-disclosure is a practical obstacle for mass research, not a guarantee of complete privacy. If you want to keep a transaction private, a cash purchase and closed-table settlement help, but absolute anonymity is difficult in modern real estate.

Sources

• U.S. Census Bureau, QuickFacts, housing, ownership, and local market context.

• U.S. Department of Housing and Urban Development, official guidance on buying, financing, and distressed property.

• GoliathData real-estate records, distressed-property and market data compiled from public records.