This site helps homeowners and potential buyers locate property for exchange.

However there is major difference on this site
There are no properties for sale on this site.
Normally, you use an estate agent to advertise your house for sale
You hope someone sees your advert and buys your house
Blockhunter works the other way around
Buyers use this site to register their searches on a map
Sellers can then register their house to see if buyers are interested
Registered sellers are NOT advertising their property
Your property details remain private. It's up to you if you contact a buyer
The Mapping used the Google Maps API but there some nice functionality on the mapping side .
The Create Block refers to a rectangle that can be resized to become the search area.
This is a good way to empower the user and making the the search more interactive.
One Suggestion is to have a Circle Search and/or a multi-edged polygon.
Multi-edge Polygon
ExampleCircle
MethodHas very good potential though.
MapperzLabels: Google Maps, Interactive Map., Local Search, Property