County records, as with the other sources, have been known to be incorrect.
I have had experience with a property where the APN number recorded on title documents actually referred to the property next door, so all of the records were WAY off.
If you're at all interested in the property, arrange to see it.
If your questions are still an issue at that point, ask for clarification from the agent/seller/appraiser.
The sole purpose of contingency periods and buyer investigations under a purchase contract is so that a buyer can satisfy themselves as to all aspects of the property and property condition before becoming financially liable. This includes lot size and square foot measurements of all kinds.
A good agent will help you (and others) work through this.
The records available to real estate agents show the lot size is 14,874 sf. but the same web site shows a map marked 107' x 62' with a rounded corner. The description says 98' lot depth and 60' frontage. The rounded corner probably causes the difference in dimensions. Where the 14,874 sf comes from is unknown.
Mountain View home values at http://julianalee.com/mountain-view/mountain-view-statistics.htm
Mountain View just sold information at http://julianalee.com/mountain-view/mountain-view-home-sales.htm
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