When I was developing a custom store locator for a website I was working on, one of the issues I ran into was the map zooming in way too close when only a single marker or location was found within the radius I had set.
The way I found to prevent the map from zooming in to far is by adding this line of code to the <head> section of the page:
var zoomOverride = map.getZoom();
if(zoomOverride > 15) {
zoomOverride = 15;
}
map.setZoom(zoomOverride);
map.setCenter(bounds.getCenter(), map.getBoundsZoomLevel(bounds));
Here are links to all of the posts in this series on how to create your own store locator map:
Create a spreadsheet of your store locations
Create and populate the MySQL table
Create a PHP file which will be used to connect to the database
Create a PHP file which will output the XML file results of a search
Create the HTML page which contains the store locator map
And here are some hints and tips to help create and customize your store locator map:
Using your own custom markers for the locations in place of Google’s default markers
How to prevent the map from zooming in to close on a single location