Texas Property Value Study - 1999 Preliminary Report

Statewide Coefficients of Dispersion
1989 through 1999 Property Value Studies

The table below compares the statewide coefficients of dispersion from the 1989 to 1999 Property Value Studies. The statewide coefficient of dispersion for an individual property category was calculated using the appraisal ratios of all Property Tax Division sample properties in that category from across the state. The overall statewide coefficient of dispersion was calculated using the appraisal ratios for all sample properties. See page 10 for a detailed explanation of coefficients of dispersion.

Property Category

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

A. Single-family Residential

15.18

13.84

14.11

13.12

12.93

10.74

12.11

11.36

11.06

9.68

9.47

B. Multifamily Residential

13.41

11.73

13.27

10.84

12.66

8.38

10.06

8.43

7.71

7.34

7.98

C. Vacant Lots

22.93

21.57

23.16

22.66

22.01

19.27

18.21

19.86

17.10

15.17

13.74

D. Acreage (market value)

16.95*

16.90*

15.98*

15.50*

16.31*

18.49*

14.92*

14.60*

15.62*

16.09*

15.17

E. Farm & Ranch Improvements

F1. Commercial Real

18.21

16.54

15.58

15.80

14.38

12.59

13.28

11.34

11.01

10.51

11.05

F2. Industrial Real

G. Oil, Gas & Minerals

16.71

11.00

12.94

9.41

11.20

13.01

12.61

18.95

4.85

7.38

20.42

J. Utilities

24.13

20.50

20.38

17.28

14.18

14.35

12.50

12.40

10.76

9.64

3.75

L1. Commercial Personal

20.75

18.09

17.54

16.36

10.83

8.14

11.95

20.73

11.20

9.24

7.62

L2. Industrial Personal

M. Other Personal

14.02

14.59

17.19

O. Residential Inventory

20.95

14.51

13.84

OVERALL

17.64

16.73

16.18

14.58

13.97

12.86

13.17

13.47

11.64

10.86

11.40

*	Beginning in 1989, taxable values for Farm & Ranch Improvements (formerly Category E) were merged into Category D with Acreage(market value). Therefore, Category D for 1989 and subsequent years is not directly comparable to Category D in previous years.
**	Too few sample observations were available to produce meaningful statewide median appraisal ratios or CODs for these properties.