Here are some helpful links:

Economic (Price change) Calculators
* US Dept of Labor, CPI Inflation Calculator
* US Home Price Index Calculator (Provides a general indication of the current value of your property based upon the original purchase price and the subsequent change in the broad MSA market index.)


Appraisal Regulators & Rule Setting Entities
* Appraisal Foundation
* Colorado DORA:  Division of Real Estate
* USPAP (The main governing legal requirements for appraisal practice.)
* FHA
* FNMA, FNMA UAD
* FHLMC
* VA

Colorado MLS
* Metrolist MLS: http://www.recolorado.com
* IRES MLS (Northern Colorado Front Range): http://ires-net.com  http://www.coloproperty.com
* PPAR (Southern Colorado Front Range): http://ppar.com

Colorado Appraiser Groups (in no particular order)
* Appraisal Institute (AI), Colorado Chapter
* Northern Colorado Association of Real Estate Appraisers (NCAREA)
* Colorado Association of Real Estate Appraisers (CAREA)
* American Society of Appraisers
* American Society of Farm Managers and Rural Appraisers
* National Association of Independent Fee Appraisers (NAIFA)
* Royal Institution of Chartered Surveyors

Useful Websites
* BatchGEO (Map multiple properties and show distances between them.)
* Create Bell Curve in MS Excel 2010
* Real Estate & Financial Calculators
* EPA SuperFund Sites

Is a link broken? Please let me know so I can update it.