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Why Appraisals Come in Low on Long Island

A low appraisal can create challenges in a real estate transaction. Buyers may need additional cash to close, sellers may be asked to reduce the contract price, and lenders may require additional documentation or a review of the appraisal report.

In Long Island's competitive housing market, appraisal accuracy is especially important because property values can vary significantly from one neighborhood to another and even within a single block.

It is important to understand that a low appraisal does not automatically mean the appraiser made a mistake. Appraisers are required to provide an independent opinion of market value, not simply support the contract price. However, when the data presented throughout the report does not support the final conclusion, the appraisal may warrant further review.

Recently, I reviewed an appraisal in which several aspects of the report appeared inconsistent with the market data presented throughout the analysis. The purpose of this article is not to criticize another appraiser but to explain how market trends and market condition adjustments can significantly influence an opinion of value.

Market Trends Must Match the Data

One of the first sections reviewed in any appraisal report is the neighborhood and market trends analysis. This section summarizes the appraiser's interpretation of current market conditions.

In many Long Island communities, inventory remains limited, buyer demand remains strong, and homes continue to sell relatively quickly. In these markets, appraisals commonly reflect:

Increasing property values
A shortage of available inventory
Marketing times under three months

When the market trend conclusions reported in an appraisal do not align with the supporting data presented elsewhere in the report, questions may arise about the analysis's consistency.

For example, if median home prices are rising, inventory remains limited, and homes are selling quickly, these indicators typically point to an appreciating market rather than a stable one.

In many Nassau County and Suffolk County neighborhoods, low inventory and strong buyer demand have continued to push home prices higher. Short marketing times and rising median sale prices are generally consistent with an appreciating market where demand exceeds supply.

When the conclusions in the One-Unit Housing Trends section do not align with the market data presented in the report, it may raise questions about the report's overall consistency and supportability.

When homes are selling quickly, and median prices are rising, that typically indicates a market where demand exceeds supply rather than a balanced or stable one.

On Long Island, especially in many Nassau and Suffolk County neighborhoods, inventory has remained limited, while buyer demand has continued to put upward pressure on values. Short marketing times and rising sale prices are generally indicators of an appreciating market.

Why Market Conditions Adjustments Matter

Market condition adjustments, often called time adjustments, are used to account for changes in market value between the date a comparable property went under contract and the appraisal's effective date.

These adjustments are especially important in rapidly changing markets.

If home values are rising, older comparable sales may require upward adjustments to reflect current market conditions. Conversely, in a declining market, downward adjustments may be necessary.

Because buyers and sellers base their decisions on current market conditions, comparable sales must be analyzed in the context of today's market.

Case Study #1: Increasing Market

In a recent appraisal assignment in Massapequa, market analysis showed a clear upward trend in values.
A review of monthly median sales price data showed the following:
7% appreciation since November 2025

Nearly 10% appreciation since May 2025

Under these market conditions, comparable sales that went under contract several months earlier required market-condition adjustments to reflect current market behavior.

Failing to account for measurable appreciation may result in comparable sales indicating values below current market levels.

Case Study #2: Stable Market

Not every market needs time adjustments.

In a recent appraisal assignment in Hicksville, market analysis showed that values remained relatively stable over the prior year. Monthly median sales prices showed little variation, following a generally flat trend.

Because market conditions remained stable, no adjustments to comparable sales that went under contract in the previous year were warranted.

This illustrates an important principle:

Time adjustments should be supported by market evidence rather than applied automatically.

Whether adjustments are needed depends solely on market data and the most recent comparable sales.

Key Takeaways: An appraisal report should support its conclusions about whether the market is increasing, decreasing, or stable. A monthly graph, quarterly graph, or year-over-year chart provides solid support.

A Low Appraisal Does Not Automatically Mean the Report Is Wrong

One important point often overlooked is that appraisals are opinions of value, not exact sciences.

Two competent appraisers can analyze the same property and reach somewhat different conclusions. Minor variances are common.

However, appraisal conclusions should still remain:

internally consistent,
supported by market evidence,
and logically reconciled with the data presented throughout the report.

When inconsistencies arise among market trends, adjustment analysis, and final reconciliation, they may raise legitimate questions about whether the final opinion of value fully reflects current market behavior.

When Should an Appraisal Be Reviewed?

Situations where an appraisal review may be beneficial include:

The appraisal comes in significantly below the contract price,
Inconsistent market trends are reported,
Comparable sales appear poorly selected,
Time adjustments appear unsupported or omitted,
Or adjustments appear overly generic for the market area.

A professional appraisal review focuses on methodology, supportability, and consistency rather than merely disagreeing with a value conclusion.

Final Thoughts

Appraisals play a critical role in real estate transactions, divorce cases, estate matters, and litigation support. Therefore, it is important that market trends, comparable sales adjustments, and valuation conclusions be supported by credible market evidence.

When reviewing an appraisal, the goal should not be to attack another appraiser personally. Instead, the focus should remain on whether the report’s conclusions are adequately supported by the data presented in the analysis.

In Long Island’s rapidly changing housing market, accurate trend analysis and well-supported adjustments can have a meaningful impact on value conclusions.