The various U.S. appraisal groups and international professional appraisal organizations have started collaborating in recent years towards the development of International Valuation Standards. This will facilitate global real estate appraisal standards, a much-needed adjunct to real estate investment portfolios which cross national boundaries. Some appraisal groups are already international organizations and thus, to some extent, already incorporate some level of global standards.
In most instances when the cost approach is involved, the overall methodology is a hybrid of the cost and sales comparison approaches (representing both the suppliers' costs and the prices that customers are seeking). For example, the replacement cost to construct a building can be determined by adding the labor, material, and other costs. On the other hand, land values and depreciation must be derived from an analysis of comparable sales data.

After a lot of phone tag (due to my availability, not John's), he finally got me on the phone. We talked about what I was looking for, and John talked to me about the general process of appraisals for PMI evaluation, and the availability of those reports. He was open and honest and took his time to help me understand, knowing he was turning away a potential customer. In this day and age, it's so hard to find someone with the ethics necessary to turn away a potential customer. And as such, he has definitely earned my respect and future business (as well as my highest recommendations.
Although appraisers and assessors of real estate work in offices, they may spend a large part of their time conducting site visits to assess properties. Time spent away from the office depends on the specialty. For example, residential appraisers tend to spend less time on office work than commercial appraisers, who might spend up to several weeks analyzing information and writing reports on one property. Appraisers who work for banks and mortgage companies generally spend most of their time inside the office, making site visits only when necessary.
The federal government regulates appraisers indirectly because if the Appraisal Subcommittee (ASC) of the Federal Financial Institutions Examination Council (FFIEC) finds that a particular state's appraiser regulation and certification program is inadequate, then under federal regulations all appraisers in that state would no longer be eligible to conduct appraisals for federally chartered banks.[25] The ASC oversees the TAF. Banks make widespread use of mortgage loans and mortgage-backed securities, and would be unable to do so without appraisals.
The seller can offer to carry a second mortgage for the difference.If the buyer really wants the home but cannot come up with the difference in cash, making payments or a lump sum payment at a later date to the seller is an option. After the escrow closes, sellers often retain the right to discount the second mortgage, sell it for less than face value to an investor.
The Federal German Organisation of Appointed and Sworn Experts (Bundesverband Deutscher Sachverständiger und Fachgutachter, abbr. BDSF)[22] is the main professional organization encompassing the majority of licensed appraisers in Germany. In recent years, with the move towards a more global outlook in the valuation profession, the RICS has gained a foothold in Germany, somewhat at the expense of the BDSF. Another German Organisation of Appointed and Sworn Experts is the (Deutsche Sachverständigen Gesellschaft, abbr. DESAG)[23] This organization also includes a large number of licensed appraisers in Germany.
However, the recent trend of the business tends to be toward the use of a scientific methodology of appraisal which relies on the foundation of quantitative-data,[10] risk, and geographical based approaches.[11][12] Pagourtzi et al. have provided a review on the methods used in the industry by comparison between conventional approaches and advanced ones.[13]
Besides the mandatory educational grade, which can vary from Finance to Construction Technology, most, but not all, countries require appraisers to have the license for the practice. Usually, the real estate appraiser has the opportunity to reach 3 levels of certification: Appraisal Trainee, Licensed Appraiser and Certified Appraiser. The second and third levels of license require no less than 2000 experience hours in 12 months and 2500 experience hours in no less than 24 months respectively.[1][2] Appraisers are often known as "property valuers" or "land valuers"; in British English they are "valuation surveyors". 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. In the United States, mortgage valuations of improved residential properties are generally reported on a standardized form like the Uniform Residential Appraisal Report.[3] Appraisals of more commercial properties (e.g., income-producing, raw land) are often reported in narrative format and completed by a Certified General Appraiser.
2. Investment 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 U.S. practice, however, the closely related capitalizing of NOI is confounded with the DCF method under the general classification of the income capitalization approach (see above).
There are also voluntary professional bodies for real estate valuation such as the Royal Institute of Chartered Surveyors ('RICS') and the Property Institute of New Zealand ('PINZ'). Both of these bodies have a wider membership, beyond real estate valuers. PINZ has over 2,500 members in New Zealand and overseas (such as ex-pats in the UK, Asia and Australia). PINZ has a service level agreement with the NZIV, whereby PINZ contracts to perform tasks for the statutory professional body, NZIV. PINZ was formed in 2000 to act as the voice of the property professions. There have been 'political divisions' within the valuation profession in New Zealand, expressed at AGMs and through 'proxy wars' over the last 20 years or so. Many valuers are supportive of amalgamation of the NZIV functions under the multi-disciplinary voluntary body PINZ, whilst many others wish to retain a separate statutory professional body for valuers (the NZIV). There are various reasons in the debate and the governing legislation is under review and amendments or repeal is being considered. At present, the Act remains in force and the NZIV is legally a distinct body with statutory functions, powers and duties.
The role of a real estate appraiser is to provide honest, impartial and objective opinions regarding the market value of the property in the form of an appraisal. This service plays a huge role in assisting those who own, manage, sell, invest, and/or lend money on the security of real estate. Appraisers will gather facts, stats, and any other information regarding said property. From there they will put their analytical skills to test in analyzing this data, exercising sound judgement, and communicating this effectively in their appraisal report.
Unfortunately, recent distressed sales in the surrounding area can lower your home's appraisal value. If you feel that your home's value has been dragged down by the sales prices of nearby foreclosures and short sales, you may be able to convince the appraiser that your home is worth more if it's in significantly better condition than those properties. Sellers should also know that federal guidelines (intended to eliminate the inflated appraisal values that contributed to the 2008 housing crisis) sometimes cause appraisals to come in below fair market value and can make low appraisals difficult to challenge.
If you're refinancing a conventional mortgage, a low appraisal can prevent you from doing so. The home needs to appraise at or above the amount you want to refinance for your loan to be approved. However, if your existing mortgage is an FHA mortgage, you can refinance without an appraisal through the FHA Streamline program – a great option for underwater homeowners.
The notice shows property owners their just, assessed and taxable values for the prior and current years. It also provides a comparison of the prior year taxes for each taxing authority to the current proposed property taxes.  Exemptions and reductions in value due to assessment caps are provided, along with any non-ad valorem assessments.  Current year taxes are based on property values, tax exemptions and the proposed tax rate that has been set by the taxing authorities.  
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