Mass Appraisal

Your Software Solution for Mass Appraisal Property Valuation

The NCSS software solution contains a variety of statistical tools for managing and modeling your property data for tax assessment purposes.

Each tool is easy-to-use, well-documented, and carefully validated against published results.

With over 30 years on the market, NCSS is used by assessors in sparsely populated jurisdictions, as well as in counties and provinces with hundreds of thousands of properties.

Developed by PhD statisticians working with mass appraisal industry experts, NCSS is your affordable solution for mass appraisal valuation of properties.

  • Appraisal Ratios
  • Comparables – Sales Price
  • Descriptive Statistics
  • Filters & Transformations
  • Hybrid Appraisal Models
  • Multiple Regression
  • Nonlinear Regression
  • Scatter Plots
  • Summary Tables

“The NCSS software is and has always been the best solution for my work as an assessor. I have been exposed to many other analytical and statistical software applications and have found there is no other product on the market that can match the ease of learning, comprehension of function, and the frugality of price the NCSS product offers.”

—Michael Ireland, CAE, Assessor

Mass Appraisal Using NCSS Data Analysis and Graphics Software

The NCSS 11 analysis and graphics solution provides hundreds of tools for analyzing and visualizing your data. We have invested an enormous amount of time with industry experts, as well as relevant texts and articles, to produce a product that will provide the answers you need from your data.

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Intuitive Data Management

NCSS readily imports all major types of data files; or you can copy-and-paste your data, or enter your data directly. NCSS has excellent filtering and transformation features for managing your data.

  • NCSS Data File (*.NCSS)
  • Access Database
    (*.ACCDB; *.MDB)
  • dBase File (*.DBF)
  • Epi Info File (*.REC)
  • Excel File (*.XLSX; *.XLS)
  • Gauss File (*.DAT)
  • JMP File (*.JMP)
  • Matlab File (*.MAT)
  • Minitab File (*.MTW)
  • R File (*.RData)
  • SAS File (*.SD2;*.SAS7BDAT…)
  • SPLUS File (*.DAT)
  • SPSS File (*.SAV; *.POR)
  • Stata File (*.DTA)
  • Statistica File (*.STA)
  • Systat File (*.SYS; *.SYZ)
  • Text File (*.TXT;*.PRN;*.CSV)

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Example Graphs from the NCSS Solution


NCSS/PASS Cited in Recent Publications

International Urogynecology Journal
Clinical and Experimental Pharmacology and Physiology
Atherosclerosis
Annals of Oncology
The American Journal of Clinical Nutrition
International Orthopaedics
Journal of Veterinary Internal Medicine
Journal of Anesthesia
Journal of Cardiology
International Journal of Rheumatic Diseases
Cardiothoracic and Vascular Anesthesia
Journal of Advanced Nursing
Aquatic Botany
Journal of Infection
Journal of Dental Education
Health Economics Reivew
Schizophrenia Research
Environmental and Experimental Botany
Transfusion Medicine
Southeastern Surgical Congress
Pediatric Cardiology
Cardiovascular Therapeutics
Water Resources Research
Journal of Applied Entomology
Ophthalmology
Anesthesiology
Gastrointestinal Endoscopy
Experimental & Clinical Cardiology
American Heart Journal
American Journal of Transplantation
Annals of Internal Medicine
American Journal of Surgery
Journal of Hepatology
American Heart Association
Journal of Cardiovascular Electrophysiology
Bone Marrow Transplantation
International Journal of Gynecology Obstetrics
The Journal of Urology
The American Journal of Medicine
Radiology

“I’ve used NCSS since 1986 and PASS since 1997. The utility, precision, documentation, output and ease-of-use of your products are the best in the business. Thank you!”

Tim Gohmann, Ph.D.

"PASS is a great program. It does so much and is easy to use. It’s much better than the other sample size programs I’ve used—it has helped me greatly in my research."

Ken Lawson, Ph.D., The University of Texas