Mass appraisal and automated valuation models

Mass Automated valuation models (AVMs) are growing in acceptance. These rely on statistical models such as multiple regression analysis or geographic information systems (GIS). While AVMs can be quite accurate, particularly when used in a very homogeneous area, there is also evidence that AVMs are not accurate in other instances such as when they are used in rural areas, or when the appraised property does not conform well to the neighborhood. AVM's have also gained favor in class action litigation, and have been substantiated in numerous cases, both in Federal and state courts, as the appropriate method for dealing with large-scale real estate litigation problems, such as contaminated neighborhoods and automated valuation models

Types of ownership interest

Implicit in the analysis of the subject property is a determination of the interest in the property being appraised. For most common situations (e.g. -- mortgage finance) the fee simple interest is explicitly assumed since it is the most complete bundle of rights available. However, in many situations, and in many societies which do not follow English Common Law or the Napoleanic Code, some other interest may be more common. While there are many different possible interests in real estate, the three most common are:

• Fee simple value (known in the UK as freehold) - The most complete ownership in real estate, subject in common law countries to the powers reserved to the state (taxation, escheat, eminent domain, and police power)

• Leased fee value - This is simply the fee simple interest encumbered by a lease. If the lease is at market rent, then the leased fee value and the fee simple value are equal. However, if the tenant pays more or less than market, the residual owned by the leased fee holder, plus the market value of the tenancy, may be more or less than the fee simple value.

• Leasehold value - The interest held by a tenant. If the tenant pays market rent, then the leasehold has no market value. However, if the tenant pays less than market, the difference betweent the present value of what is paid and the present value of market rents would be a positive leasehold value. For example, a major chain retailer may be able to negotiate a below-market lease to serve as the anchor tenant for a shopping center. This leasehold value may be transferrable to another anchor tenant, and if so the retail tenant has a positive interest in the real estate.

Highest and best use

Highest and Best Use (HABU) is a term of art in the appraisal process. It is a process to determine the use of the property which produces the highest value for the land, as if vacant. There are four steps to the process. First, the appraiser determines all uses which are legally permissible for the property. Second, of the uses which are legally permissible, which ones are physically possible. Of those, which ones are financially feasible (sometimes referred to as economically supported). Of those uses which are feasible, which one and only use is maximally productive for the site. In a simple context, the appraiser must do this twice, comparing the results—as if the land is vacant and in the as-is-improved state, taking into account the costs of demolishing any existing improvements. The outcome of this process is the highest and best use for the site. An appraisal of market value must explicitly assume that the owner or buyer would employ the property in its highest and best use, and therefore value the site accordingly.

In more complex appraisal assignments (e.g. -- contract disputes, litigation, brownfield or contaminated property valuation), the determination of highest and best use may be much more complex, and may need to take into account the various intermediate or temporary uses of the site, the contamination remediation process, and the timing of various legal issues.

Scope of work

Scope of work

While USPAP has always required appraisers to identify the scope of work needed to produce credible results, it became clear in recent years that appraisers did not fully understand the process for developing this adequately. In formulating the scope of work for a credible appraisal, the concept of a limited versus complete appraisal and the use of the Departure Rule caused confusion to clients, appraisers, and appraisal reviewers. In order to deal with this, USPAP was updated in 2006 with what came to be known as the Scope of Work project. In short, USPAP eliminated the Departure Rule and the concept of a limited appraisal and created a new Scope of Work rule. In this, appraisers were to identify six key parts of the appraisal problem at the beginning of each assignment:

• Client and other intended users
• Intended use of the appraisal and appraisal report
• Definition of value (e.g. -- market, foreclosure, investment)
• Any hypothetical conditions or extraordinary assumptions
• The effective date of the appraisal analysis
• The salient features of the subject property

Based on these factors, the appraiser must identify the scope of work needed, including the methodologies to be used, the extent of investigation, and the applicable approaches to value. The rule provided the explicit requirement that the minimum standards for scope of work were:

• Expectations of the client and other users
• The actions of the appraiser's peers who carry out similar assignments

The Scope of Work is the first step in any appraisal process. Without a strictly defined Scope of Work an appraisal's conclusions may not be viable. By defining the Scope of Work an appraiser can begin to actually develop a value for a given property for the intended user, which is the intended use of the appraisal.

UK valuation methods

In the United Kingdom, valuation methodology has traditionally been classified into five methods:

1. Comparable method. Used for most types of property where there is good evidence of previous sales. This is analogous to the sales comparison approach outlined above.

2. Investment/income method. Used for most commercial (and residential) property that is producing future cash flows through the letting of the property. If the current Estimated Rental Value (ERV) and the passing income are known, as well as the market-determined equivalent yield, then the property value can be determined by means of a simple model. Note that this method is really a comparison method, since the main variables are determined in the market. In standard US practice, however, the closely related capitalising of NOI is confounded with the DCF method under the general classification of the income capitalization approach (see above).

3. Accounts/profits method. Used for trading properties where evidence of rates is slight, such as hotels, restaurants and old-age homes. A three-year average of operating income (derived from the profit and loss or income statement) is capitalised using an appropriate yield. Note that since the variables used are inherent to the property and are not market-derived, therefore unless appropriate adjustments are made, the resulting value will be Value-in-Use or Investment Value, not Market Value.

4. Development/residual method. Used for properties ripe for development or redevelopment or for bare land only.

5. Contractor's/cost method. Used for only those properties not bought and sold on the market. Both the development/residual method and the contractor's/cost method would be grouped in the US under the cost approach

The income capitalization approach

The income capitalization approach (often referred to simply as the "income approach") is used to value commercial and investment properties. Because it is intended to directly reflect or model the expectations and behaviors of typical market participants, this approach is generally considered the most applicable valuation technique for income-producing properties, where sufficient market data exists to supply the necessary inputs and parameters for this approach.

In a commercial income-producing property this approach capitalizes an income stream into a value indication. This can be done using revenue multipliers or capitalization rates applied to the first-year Net Operating Income. The Net Operating Income (NOI) is gross potential income (GPI), less vacancy and collection loss (= Effective Gross Income) less operating expenses (but excluding debt service, income taxes, and/or depreciation charges applied by accountants).

Alternatively, multiple years of net operating income can be valued by a discounted cash flow analysis (DCF) model. The DCF model is widely used to value larger and more expensive income-producing properties, such as large office towers. This technique applies market-supported yields (or discount rates) to future cash flows (such as annual income figures and typically a lump reversion from the eventual sale of the property) to arrive at a present value indication.

Steps in the Sales Comparison Approach

Steps in the Sales Comparison Approach
 1. Research the market to obtain information pertaining to sales, listings, pending sales that are similar to the subject property.
 2. Investigate the market data to determine whether they are factually correct and accurate.
 3. Determine relevant units of comparison (e.g., sales price per square foot), and develop a compararive analysis for each.
 4. Compare the subject and comparable sales according to the elements of comparison and adjust as appropriate. 5. Reconcile the multiple value indications that result from the adjustment of the comparable sales into a single value indication.

Method of Data Collection

Method of Data Collection 
Data are collected on recent sales of properties similar to the subject being valued, called comparables. Sources of comparable data include real estate publications, public records, buyers, seller, real estate brokers and/or agents, appraisers, and others. Important details of each comparable sale are described in the appraisal report. Since comparable sales are not always identical to the subject property, adjustments are sometimes make for date of sale, location, style, bathrooms, square foot, site size, etc. The main idea is to simulate the price that would have been paid if each comparable sale were identical to the subject property.If the adjustment to the comparable is superior to the subject, a downward adjustment is necessary. Likewise, if the adjustment to the comparable is inferior to the subject, an upward adjustment is necessary. From the analysis of the group of adjusted sales prices of the comparable sales, the state licensed real estate appraiser selects an indicator of value that is representative of the subject property.

The Sales Comparison Approach

The Sales Comparison Approach

The sales comparison approach in a real estate appraisal is based primarily on the principle of substitution. This approach assumes a prudent individual will pay no more for a property than it would cost to purchase a comparable substitute property. The approach recognizes that a typical buyer will compare asking prices and seek to purchase the property that meets his or her wants and needs for the lowest cost. In developing the sales comparison approach, the state licensed real estate appraiser attempts to interpret and measure the actions of parties involved in the marketplace, including buyers, sellers, and investors.

The cost approach

The cost approach

The cost approach was formerly called the summation approach. The theory is that the value of a property can be estimated by summing the land value and the depreciated value of any improvements. The value of the improvements is often referred to by the abbreviation RCNLD (reproduction cost new less depreciation or replacement cost new less depreciation). Reproduction refers to reproducing an exact replica. Replacement cost refers to the cost of building a house or other improvement which has the same utility, but using modern design, workmanship and materials. In practice, appraisers use replacement cost and then deduct a factor for any functional disutility associated with the age of the subject property.

In most instances when the cost approach is involved, the overall methodology is a hybrid of the cost and sales comparison approaches. For example, while the replacement cost to construct a building can be determined by adding the labor, material, and other costs, land values and depreciation must be derived from an analysis of comparable data.

The cost approach is considered reliable when used on newer structures, but the method tends to become less reliable for older properties. The cost approach is often the only reliable approach when dealing with special use properties (e.g. -- public assembly, marinas).

Three approaches to value

Three approaches to value

There are three general groups of methodologies for determining value. These are usually referred to as the "three approaches to value"which are generally independent of each other:

• The cost approach
• The sales comparison approach and
• The income approach

However, the recent trend of the business tends to be clinging to the scientific methodology of appraisal which lies on the foundation of quantitative-data , risk and geographical based approaches . Pagourtzi et al. have provided a review on the methods used in the industry by comparison between conventional approaches and advanced ones

The appraiser using three approaches will determine which one or more of these approaches may be applicable, based on the scope of work determination, and from that develop an appraisal analysis. Costs, income, and sales vary widely from one situation to the next, and particular importance is given to the specific characteristics of the subject.

Consideration is also given to the market for the property appraised. Appraisals of properties that are typically purchased by investors (e.g. - skyscrapers) may give greater weight to the income approach, while small retail or office properties, often purchased by owner-users, may give greater weighting to the sales comparison approach. While this may seem simple, it is not always obvious. For example, apartment complexes of a given quality tend to sell at a price per apartment, and as such the sales comparison approach may be more applicable. Single family residences are most commonly valued with greatest weighting to the sales comparison approach, but if a single family dwelling is in a neighborhood where all or most of the dwellings are rental units, then some variant of the income approach may be more useful.

Market value definitions in the USA

In the US, appraisals are performed to a certain standard of value (e.g. -- foreclosure value, fair market value, distressed sale value, investment value). The most commonly used definition of value is Market Value. While USPAP does not define Market Value, it provides general guidance for how Market Value should be defined:

a type of value, stated as an opinion, that presumes the transfer or sale of a property as of a certain date, under specific conditions set forth in the definition of the term identified by the appraiser as applicable in an appraisal.

Thus, the definition of value used in an appraisal or CMA analysis and report is a set of assumptions about the market in which the subject property may transact. It becomes the basis for selecting comparable data for use in the analysis. These assumptions will vary from definition to definition but generally fall into three categories:

Price versus value

Price versus value

It is important to distinguish between Market Value and Price. A price obtained for a specific property under a specific transaction may or may not represent that property's market value: special considerations may have been present, such as a special relationship between the buyer and the seller, or else the transaction may have been part of a larger set of transactions in which the parties had engaged. Another possibility is that a special buyer may have been willing to pay a premium over and above the market value, if his subjective valuation of the property (itsinvestment value for him) was higher than the Market Value. An example of this would be the owner of a neighbouring property who, by combining his own property with the subject property, could thereby obtain economies-of-scale. Such situations often arise in corporate finance, as for example when a merger or acquisition is concluded at a price which is higher than the value represented by the price of the underlying stock. The usual rationale for these valuations would be that the 'sum is greater than its parts', since full ownership of a company entails special privileges for which a potential purchaser would be willing to pay. Such situations arise in real estate/property markets as well. It is the task of the real estate appraiser/property valuer to judge whether a specific price obtained under a specific transaction is indicative of Market Value.

Liquidation value

Liquidation value


  may be analyzed as either a forced liquidation or an orderly liquidation and is a commonly sought standard of value in bankruptcy proceedings. It assumes a seller who is compelled to sell after an exposure period which is less than the market-normal timeframe.

Insurable value

Insurable value
  is the value of real property covered by an insurance policy. Generally it does not include the site value.

Investment value

Investment value


 is the value to one particular investor, and is usually higher than the market value of a property.

Value-in-use

Value-in-use


The net present value (NPV) of a cash flow that an asset generates for a specific owner under a specific use. Value-in-use is the value to one particular user, and is usually below the market value of a property.

Market Value

Market Value

• The price at which an asset would trade in a competitive Walrasian auction setting. Market Value is usually interchangeable with Open Market Value or Fair Value. International Valuation Standards (IVS) define Market Value as:

Market Value is the estimated amount for which a property should exchange on the date of valuation between a willing buyer and a willing seller in an arms-length transaction after proper marketing wherein the parties had each acted knowledgeably, prudently, and without compulsion

Real estate appraisal

Real estate appraisal, property valuation or land valuation is the practice of developing an opinion of the value of real property, usually itsMarket Value. The need for appraisals arises from the heterogeneous nature of property as an investment class: no two properties are identical, and all properties differ from each other in their location - which is one of the most important determinants of their value. So there cannot exist a centralised Walrasian auction setting for the trading of property assets, as there exists for trade in corporate stock. The absence of a market-based pricing mechanism determines the need for an expert appraisal/valuation of real estate/property.

Although some areas require no license or certification at all, a real estate appraisal is generally performed by a licensed or certified appraiser (in many countries known as a Property Valuer or Land Valuer and in British English as a "valuation surveyor"). If the appraiser's opinion is based on Market Value, then it must also be based on the Highest and Best Use of the real property. For mortgage valuations of improved residential property in the US, the appraisal is most often reported on a standardized form, such as the Uniform Residential Appraisal Report.Appraisals of more complex property (e.g. -- income producing, raw land) are usually reported in a narrative appraisal report.

WHAT IS REAL ESTATE?

Real estate is a legal term (in some jurisdictions, such as the USA, United Kingdom, Canada, Australiaand The Bahamas) that encompasses land along with improvements to the land, such asbuildings,fences, wells and other site improvements that are fixed in location -- immovable.Real estate law is the body of regulations and legal codes which pertain to such matters under a particularjurisdiction and include things such as commercial and residential real property transactions. Real estate is often considered synonymous with real property (sometimes called realty), in contrast with personal property (sometimes called chattel or personalty under chattel law or personal property law).

However, in some situations the term "real estate" refers to the land and fixtures together, as distinguished from "real property," referring to ownership of land and appurtenances, including anything of a permanent nature such as structures, trees, minerals, and the interest, benefits, and inherent rights thereof. Real property is typically considered to be Immovable propertyThe terms real estate and real property are used primarily in common law, while civil law jurisdictions refer instead to immovable property.