Table Of Percentages For Lots More Or Less Than 25 Feet Wide

Width

Percentage

12.6

.50

13.0

.52

14.0

.56

15.0

.60

15.10 1/2

.635

16.0

.64

16.8

.666666

17.0

.68

17.3 1/4

.690832

18.0

.72

18.9

.75

18.11

.756666

Width

Percentage

19.0

.76

19.9 1/2

.79

20.0

.80

20.11

.836666

21.0

.84

21.0 1/2

.841666

21.6

.86

22.0

.88

22.0 5/8

.882083

22.6

.90

23.9

.92

23.0

.95

Width

Percentage

24.0

.96

24.11

.996666

25.5

1.016666

25.8 1/2

1.028333

25.11

1.036666

26.7 1/2

1.065

27.2

1.086666

28.3

1.13

30.11 1/2

1.238333

33.4

1.333333

37.6

1.5

40.0

1.6

Example - If lot is 100 feet deep, multiply value of standard lot by percentage opposite width.

If more or less than 100 feet deep, multiply result obtained by Davies rule by percentage opposite width.

Divide value of lot 25 feet wide and more or less than 100 feet deep by Davies rule ratio and, if more or less than 25 feet wide, by width percentage in addition, to arrive at value of standard lot.

To ascertain percentage added to inside lot to obtain value of corner lot, divide difference by value of inside lot.

To find percentage of inside lot of corner lot, divide value of inside lot by value of corner lot.

The percentage deducted from corner lot to fix value of inside lot is the result of difference divided by value of corner lot.

Value per square foot of standard lot, 25x100, can be found by multiplying value by four and marking off four figures, and value per front foot by same method and marking off two figures.

When the value per square foot of standard lot is given, its full value is value per square foot divided by four with four figures added.

To extract plottage, divide by one plus added percentage.

To analyze sale, if all standard lots, assuming a key lot to be worth ten per cent and a corner sixty per cent more than an inside lot, multiply the price less plottage by I for an inside lot, 1.1 for a key lot, and 1.6 for a corner, and divide each result by the sum of the units. When the lots are not of standard depth, the units will be the figures given in Davies rule, plus the added percentage for key and corner lots, and, if more or less than 25 feet wide, the product of same and the width percentage.