Types and Principles of Value: Texas Exam Guide

Before you can value a property, you need the vocabulary of value. This guide covers the difference between value, price, and cost, the four traits that give something value, and the principles appraisers use. Learn these, and the three approaches in the appraisal process make more sense.

Value, price, and cost are not the same

Snippet answer: Value is a property's worth in the market, expressed as an opinion. Price is the amount a buyer actually pays, which is a fact and can differ from value. Cost is what it takes to build or improve a property. A buyer can pay a price above value, and a feature can cost more than the value it adds.

The exam separates three words that people use loosely. Keep them distinct.

• Value. What the property is worth in the market. It is an opinion, backed by data.
• Price. What a buyer actually paid. It is a fact, and it can be higher or lower than value if the buyer overpaid or got a bargain.
• Cost. What it took to build or improve the property, in labor and materials.

The classic exam point is that these three often disagree. A buyer in a bidding war may pay a price above market value. A homeowner may spend a cost on a feature that adds less value than it cost. Price and cost are facts about one deal or one project. Value is the broader market opinion.

The most important type of value is market value: the most probable price a property should bring in a competitive and open market, with a willing buyer and a willing seller, neither under pressure, given reasonable exposure time and payment in cash or its equivalent. That definition, an arm's length deal with no duress, is worth memorizing.

Types of value beyond market value

Snippet answer: Besides market value, a property can have other values for other purposes. Assessed value is set for property taxes. Insurable value is the replacement cost for insurance. Investment value is worth to a specific investor. Use value is worth in a particular use, such as farming. The same property can carry several different values at once.

Market value is the headline number, but a property can hold several values at the same time, each for a different purpose.

The one to watch in Texas is the split between market value and assessed value for taxes, plus use value for farmland, both covered near the end of this guide.

The four characteristics of value: DUST

Snippet answer: For a property to have value, it must have four characteristics, remembered as DUST: demand, utility, scarcity, and transferability. Demand is the desire to own it backed by buying power. Utility is usefulness. Scarcity is limited supply. Transferability is the ability to convey title. Remove any one, and value falls.

Not everything has value. Economists say a thing must have four traits to be valuable, and the memory aid is DUST.

• Demand. People want it, and they have the purchasing power to buy it. Desire alone is not enough.
• Utility. It is useful and can satisfy a need, such as shelter or a place to farm.
• Scarcity. The supply is limited. If something is unlimited, it commands little value.
• Transferability. Ownership can be moved from one person to another with clear title.

All four must be present. Air is useful but not scarce, so it has no market value. Land in a ghost town may be scarce and transferable but have no demand, so its value collapses. The exam likes to remove one trait and ask what happens to value.

The principles of value

Snippet answer: The principles of value are the ideas appraisers use to explain how value behaves. The most tested are substitution, supply and demand, highest and best use, conformity, progression and regression, contribution, anticipation, change, and plottage. Substitution is the foundation, because a buyer will not pay more than the cost of an equal substitute.

Appraisers rely on a set of principles that describe how value behaves. The exam tests them by giving a short scenario and asking for the name.

A few of these carry most of the questions:

• Substitution. This is the foundation of all three approaches to value. A buyer will not pay more for a home than the cost of buying an equally desirable one nearby.
• Progression and regression. A modest house among mansions is pulled up in value by its neighbors, which is progression. A mansion among modest homes is pulled down, which is regression.
• Contribution. A feature adds only what it contributes to the whole property, not what it cost. A pool that cost fifty thousand dollars might add only twenty thousand in value.
• Conformity. Value is highest when a property is similar to the others around it, which is why cohesive neighborhoods hold value.
• Anticipation. Value comes from expected future benefits, so buyers pay today for tomorrow's enjoyment or income.
• Plottage and assemblage. Assemblage is combining adjacent parcels under one owner. Plottage is the extra value that combination can create, when the whole is worth more than the separate parts.

Highest and best use is the anchor of the whole appraisal. It is the use that is legally permitted, physically possible, financially feasible, and the most profitable, and in Texas the legal piece connects to zoning and land use.

Texas twist: market value, assessed value, and ag valuation

Snippet answer: In Texas, a county appraisal district sets an assessed value for property taxes, which is not the same as market value, and the homestead appraisal cap can hold the taxable value below market value. Qualified farm and ranch land gets a special open-space valuation, taxed on its agricultural productivity value rather than market value.

Texas turns the value-versus-value idea into real money, in two ways worth knowing.

First, the value your county appraisal district sets for property taxes is an assessed value, not a market value opinion from an appraiser. For a homestead, the homestead appraisal cap can limit how fast that taxable value rises, so it can lag behind true market value.

Second, Texas gives farm and ranch land a special break. Under the Texas Constitution and the Tax Code, qualified open-space agricultural land is appraised on its productivity value, meaning its capacity to produce agricultural products, rather than its market value. People call it the ag exemption, though it is really a special valuation. It is a clean example of use value differing sharply from market value, and it connects to Texas property taxes.

Common exam traps to remember

Snippet answer: Value questions punish a few confusions: treating price or cost as value, mixing up progression and regression, thinking a feature adds its cost, and forgetting DUST needs all four traits.

• Value, price, and cost differ. Value is market worth, price is paid, cost is to build.
• Progression lifts, regression lowers. A lesser home rises near better ones, a better home falls near lesser ones.
• Contribution is not cost. A feature adds only what it contributes to the whole, which can be less than it cost.
• DUST needs all four. Remove demand, utility, scarcity, or transferability, and value falls.
• Texas ag land is taxed on productivity. Qualified open-space land uses productivity value, not market value.

You can drill these against timed Texas questions in the free practice test, and look up any unfamiliar term in the Texas real estate glossary.

Original practice questions

Use these to check yourself. They are written for practice and are not copied from any real exam.

Question 1. In a bidding war, a buyer pays more than the property is worth in the open market. What is the amount the buyer actually paid called?

• A) Value
• B) Cost
• C) Price
• D) Assessed value

Answer: C. Price is the amount actually paid in a specific deal, and it can rise above market value in a bidding war. Value is the property's worth in the open market. (Original question.)

Question 2. A modest, well-kept home sits in a neighborhood of much larger and more expensive houses. What principle raises the value of the modest home?

• A) Regression
• B) Progression
• C) Contribution
• D) Conformity

Answer: B. Progression is the principle that a lesser property gains value from being surrounded by better ones. Regression is the reverse, where a better property is pulled down by lesser neighbors. (Original question.)

Question 3. A homeowner spends fifty thousand dollars on a swimming pool, but it adds only about twenty thousand dollars to the home's value. Which principle explains this?

• A) Anticipation
• B) Substitution
• C) Contribution
• D) Plottage

Answer: C. Contribution says a feature is worth what it adds to the whole property, not what it cost. The pool contributes only about twenty thousand dollars of value even though it cost more. (Original question.)

Question 4. In Texas, qualified farm and ranch land can be taxed on its ability to produce agricultural products rather than on its market value. What is this special valuation based on?

• A) Insurable value
• B) Productivity value
• C) Investment value
• D) Liquidation value

Answer: B. Texas open-space agricultural land is appraised on productivity value, its capacity to produce agricultural products, under the Texas Constitution and Tax Code. It is a use value that can be far below market value. (Original question.)

Frequently Asked Questions

For quick answers to every common Texas exam question, see the Texas real estate exam FAQ.

What is the difference between value, price, and cost?

Value is a property's worth in the market, expressed as an opinion. Price is the amount a buyer actually pays in a deal, which is a fact and can differ from value. Cost is what it takes to build or improve the property. A buyer can pay a price above value, and a feature can cost more than the value it adds.

What are the four characteristics of value?

The four characteristics are remembered as DUST: demand, utility, scarcity, and transferability. Demand is the desire to own backed by purchasing power, utility is usefulness, scarcity is limited supply, and transferability is the ability to convey clear title. A property must have all four to hold value.

What is the principle of substitution?

Substitution says a buyer will not pay more for a property than the cost of acquiring an equally desirable substitute. It is the foundation of all three approaches to value, because each approach compares the subject to alternatives, whether recent sales, the cost to rebuild, or another income property.

What is the difference between progression and regression?

Progression is when a lesser-valued property gains value because it is surrounded by better, higher-valued properties. Regression is the opposite, when a higher-valued property loses value because it is surrounded by lesser ones. Both come from the influence of neighboring properties on value.

What is the principle of contribution?

Contribution says a feature or improvement is worth only what it adds to the value of the whole property, not what it cost to install. A costly upgrade like a pool or a luxury kitchen may add less value than its price. Appraisers use contribution to judge whether an improvement pays off.

Is Texas farmland taxed at market value?

Not if it qualifies for open-space agricultural valuation. Under the Texas Constitution and Tax Code, qualified farm and ranch land is appraised on its productivity value, its capacity to produce agricultural products, rather than its market value. People call it the ag exemption, though it is technically a special valuation.

Sources and Methodology

This article was reviewed against Texas primary sources and standard appraisal principles on July 21, 2026. The distinction between value, price, and cost, the definition of market value as the most probable price in an open and competitive market with a willing buyer and seller under no duress, the types of value, the four characteristics of value known as DUST, and the principles of value including substitution, supply and demand, highest and best use, conformity, progression, regression, contribution, anticipation, change, and plottage, reflect settled appraisal concepts tested on the national portion of the exam. The Texas rule that qualified open-space agricultural land is appraised on productivity value rather than market value comes from the Texas Constitution Article VIII, Section 1-d-1, and Texas Tax Code Chapter 23, Subchapter D, including Section 23.51. The homestead appraisal cap that can hold a residence homestead's taxable value below market value comes from the Texas Tax Code and is detailed in the linked homestead guide. Statutes and appraisal standards can change, so verify the current Texas Constitution and Texas Tax Code before relying on any point in practice.

Official Source Links

• Texas Constitution Article VIII (Taxation and Revenue)
• Texas Tax Code Section 23.51 (Appraisal of Agricultural Land, Definitions)
• Texas Comptroller: Agricultural and Timber Use Special Appraisal
• TREC: Become a Real Estate Sales Agent

This post is educational content for Texas real estate sales agent candidates. It is not appraisal, tax, or legal advice. Value opinions and special tax valuations depend on the facts and current law, so confirm the current Texas Constitution, Texas Tax Code, and appraisal standards and consult a licensed professional before you rely on any point in a real situation.