There are two answers, the one that Tim gave below which is 100% accurate. While and agent can give you a BPO (answered in your other question), the market determines the sales price and then it needs to appraise for that value.
We hope this helps,
Mark & Kari Shea
Shea Real Estate
Home Sales Specialists
Home Valuation Specialist
Land Sales, Acquisitions & Consulting
Serving Greater San Diego
La Mesa has four zip codes and currently 94 listings ranging in value from a 2 bedroom, 1 bath with 690 sq. ft asking $199,000 to a 6 bedroom, 9 bath 8743 sq. ft home asking $1,999,500. Average Active asking price is $607,714 for 4 bedroom 3 bath home.
Solds for the last 90 days come in at $175,000 for a 2 bedroom, 1 bath home with 704 sq. ft. to a 6 bedroom, 6 bath 4509 sq. ft home that sold for $999,000.
Average sold price for the last 90 days was $404,249.
If you want to know how much your house or a specific house is worth than shoot me an email with the specifics - rooms, address, etc... and I will give you a comparative market analysis which will show you how much homes of the size and in that area have sold for.
For a quick and dirty statistical analysis. you can use Zillow and type in your property address.
Although it can be useful as a guide, it doesn't take any particulars of your home into account - things like upgrades, views, expansions, etc are not going to be reflected in the numbers Zillow offers. but still, I would start there.
If you are speaking of a particular property, feel free to email or call me with the address and I can send you all the comparable sales that will give you an idea of value. Each property is unique!
McAllister Homes Real Estate