how to determine property value

2:14

2:08

5:41

3:08

3:10

6:07

4:47

4:00

1:29

7:40

13:06

3:10

16:45

2:14

6:11

3:20

3:59

1:41

1:50

2:58

11:53

1:57

5:15

6:09

5:56

1:37:51

7:35

7:15

1:41:39

3:25

7:07

1:18

20:33

12:47

2:24

2:16

7:47

2:29

7:24

12:52