| 10 Opala Court, Donvale | | Land size: | 3,952 sqm | | Backyard: | south facing | | Slope: | Nearly Level |  |
| | Elevation Data | | Front [A] | Center | Back [B] | | 102.46m | 105.86m | 105.2m |
| The back of the land is 2.74m higher than the front.
Degree of slope is 3 percent.
(Average building cost of $6,000 for every 1 metre of fall) | | | | Left [C] | Center | Right [D] | | 104.82m | 105.86m | 103.91m |
| The left of the land is 0.91m higher than the right.
Degree of slope is 2 percent.
(Average building cost of $9,000 for every 1 metre of sideway fall) |
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