Friends of Wimbledon Town Centre has recently produced guidance for people wishing to object to planning applications. You can find this planning objection guidance here.
There are currently no planning applications of note but if you wish to search for applications that may have an impact on your area you should visit Merton Council's planning search page at http://planning.merton.gov.uk/Northgate/PlanningExplorerAA/GeneralSearch.aspx.
Unfortunately the planning application search page does not allow for a search by postcode. However you can search for your street by clicking on this link: search street
If you find any application that you wish to comment on, you can send your representation to: firstname.lastname@example.org and the representation should include the following details: