Conn. Agencies Regs. § 12-62i-3 : — TaxationBased Revaluation Testing Standards and Certification of Revaluations Performed by Towns —62i-3 - Ratio testing standards

(a) Compiling Market Value Data
(1) A file of all real property sales transactions for the sales time period used shall be established. For each such transaction the following information shall be included in the file: parcel identification number, property location, United States Census Bureau census tract number, date of sale, sales price, property assessment as of the date of the sale, property class, and any other salient property characteristics as of the date of the sale. The sales price of the property and its condition as of the date of the sale should be verified, if possible, with the buyer or seller.
(2) If the sale property is not considered a market sale as delineated in subdivision (9) of section 12-62i-1 of the Regulations of Connecticut State Agencies, the file shall contain the reason for such determination.
(3) The file may reflect an adjustment to the property sales price. The reason(s) for the adjustment shall be documented. Reasons for such an adjustment may include, but are not be limited to:
(A) The fact that personal property is included in the transaction;
(B) The existence of a lease that does not represent market rent, as defined in section 12-63b of the Connecticut General Statutes; and
(C) The effects of price changes reflected in the real estate market between the date of sale and the assessment date that is the effective date of a revaluation.
(b) Prior to finalizing a revaluation, the assessor shall conduct the following tests regarding the assessments derived from such revaluation. The assessments resulting from the revaluation shall be deemed sufficient, provided the following criteria are met:
(1) the overall level of assessment for all property classes shall be within plus or minus ten percent of the required seventy percent assessment ratio, as measured by the overall median ratio, and
(2) the level of assessment for each property class with fifteen or more market sales shall be within plus or minus five percent of the median overall level of assessment for each property class, and
(3) the coefficient of dispersion for each property class with fifteen or more market sales shall be equal to or less than fifteen percent for all property, equal to or less than fifteen percent for residential property, equal to or less than twenty percent for commercial property, and equal to or less than twenty percent for vacant land, and
(4) the price related differential for all properties and for each property class for which there are fifteen or more market sales shall be within 0.98 and 1.03, and
(5) the unsold property test result shall be between 0.95 and 1.05.
(c) In the event that the criteria described in subdivision (1), (2), (3), (4) or (5) of subsection (b) of this section are not met, the assessor shall, prior to the implementation of the revaluation, further analyze and refine the data elements or methods used in the revaluation. The assessor shall revalue the parcels of real property for which a deficiency in either the level of assessment or the uniformity of assessments has been identified.

Conn. Agencies Regs. § 12-62i-3

Adopted effective January 30, 2001